Initial commit: APIcord Discord API Emulator

- Core infrastructure: config, state management, models
- REST API server (aiohttp) with Discord-compatible endpoints
- WebSocket Gateway server (websockets) with Discord Gateway protocol
- State management with guilds, channels, users, messages, interactions
- Pydantic models for Discord objects (User, Guild, Channel, Message, etc.)
- CLI with start, test, reset, export, validate commands
- YAML-based test scenario framework
- Basic test scenario for /server_status command flow
- Unit tests for models and state manager (19 passing)
- GPL-3.0 license

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Virtual environments
+venv/
+.env
+.venv
+
+# Distribution / packaging
+dist/
+build/
+*.egg-info/
+src/*.egg-info/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+logs/
+
+# State files
+apicord_state.json
+
+# Testing
+.coverage
+htmlcov/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+
+# Environment
+.env
+.env.local

LICENSE

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+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
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+     pterodactyl-discord-bot
+     Copyright (C) 2025  k.eaven
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README.md

@@ -0,0 +1,55 @@
+# APIcord
+
+Discord API Emulator for bot testing.
+
+A standalone Python CLI program that emulates the Discord API (REST + WebSocket Gateway), enabling self-contained testing of Discord bots without requiring a real Discord connection.
+
+## Features
+
+- **REST API Server** - Implements Discord REST API endpoints needed for bot operations
+- **WebSocket Gateway** - Emulates Discord's Gateway for real-time events (READY, INTERACTION_CREATE, etc.)
+- **State Management** - In-memory state with guilds, channels, users, messages, and interactions
+- **Test Scenarios** - YAML-based test scenarios for automated bot testing
+- **CLI Interface** - Easy-to-use commands for starting, testing, and managing the emulator
+
+## Installation
+
+```bash
+pip install -e .
+# Or for development
+pip install -e ".[dev]"
+```
+
+## Quick Start
+
+```bash
+# Start emulator with a test scenario
+apicord start --scenario scenarios/basic_test.yaml
+
+# Run automated test against a bot
+apicord test --scenario scenarios/full_test.yaml --bot-path /path/to/bot
+
+# Start with custom configuration
+apicord start --port 8080 --guilds 2 --channels 5
+```
+
+## Project Structure
+
+```
+apicord/
+├── src/apicord/
+│   ├── main.py              # CLI entry point
+│   ├── config.py            # Configuration management
+│   ├── rest/                # REST API server (aiohttp)
+│   ├── gateways/            # WebSocket gateway (websockets)
+│   ├── state/               # State management
+│   ├── models/              # Pydantic models for Discord objects
+│   └── cli/                 # CLI commands
+├── tests/                   # Unit tests
+├── scenarios/               # YAML test scenarios
+└── pyproject.toml
+```
+
+## License
+
+GPL-3.0 - See LICENSE file for details.

pyproject.toml

@@ -0,0 +1,65 @@
+[project]
+name = "apicord"
+version = "0.1.0"
+description = "Discord API Emulator for bot testing"
+readme = "README.md"
+requires-python = ">=3.10"
+license = {text = "GPL-3.0"}
+authors = [
+    {name = "Eaven Kimura", email = "kimura.eaven@gmail.com"}
+]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+]
+dependencies = [
+    "aiohttp>=3.9.0",
+    "websockets>=12.0",
+    "pyyaml>=6.0",
+    "click>=8.1.0",
+    "pydantic>=2.5.0",
+    "pydantic-settings>=2.1.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.4.0",
+    "pytest-asyncio>=0.21.0",
+    "pytest-cov>=4.1.0",
+    "black>=23.0.0",
+    "ruff>=0.1.0",
+    "mypy>=1.5.0",
+]
+
+[project.scripts]
+apicord = "apicord.main:main"
+
+[build-system]
+requires = ["setuptools>=68.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+
+[tool.black]
+line-length = 100
+target-version = ['py310']
+
+[tool.ruff]
+line-length = 100
+target-version = "py310"
+
+[tool.mypy]
+python_version = "3.10"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = true

scenarios/basic_test.yaml

@@ -0,0 +1,82 @@
+# Basic Test Scenario
+# Tests the /server_status command flow: dropdown -> button click
+
+name: "Basic Server Status Test"
+description: "Test /server_status command and button interactions"
+
+# Guild setup
+guilds:
+  - id: "123456789012345678"
+    name: "Test Guild"
+    owner_id: "111111111111111111"
+    channels:
+      - "111111111111111111"
+    roles:
+      - "222222222222222222"
+
+# Channels
+channels:
+  - id: "111111111111111111"
+    guild_id: "123456789012345678"
+    name: "general"
+    type: 0  # GUILD_TEXT
+    position: 0
+
+# Roles
+roles:
+  - id: "222222222222222222"
+    guild_id: "123456789012345678"
+    name: "Game Server User"
+    color: 3447003
+    hoist: true
+    position: 1
+    permissions: "104324161"
+    managed: false
+    mentionable: true
+
+# Users
+users:
+  - id: "333333333333333333"
+    username: "TestUser"
+    discriminator: "1234"
+    bot: false
+    guild_roles:
+      "123456789012345678":
+        - "222222222222222222"
+
+# Bot
+bot:
+  id: "444444444444444444"
+  username: "TestBot"
+  discriminator: "0000"
+  token: "test_token_123"
+
+# Test steps
+steps:
+  - action: "slash_command"
+    command: "server_status"
+    user: "333333333333333333"
+    guild: "123456789012345678"
+    channel: "111111111111111111"
+    expect:
+      type: "interaction_response"
+      data:
+        type: 4  # CHANNEL_MESSAGE_WITH_SOURCE
+        components: true
+
+  - action: "select_menu"
+    custom_id: "server_dropdown"
+    values: ["server_1"]
+    user: "333333333333333333"
+    expect:
+      type: "message_create"
+      channel: "111111111111111111"
+      components: true
+
+  - action: "button_click"
+    custom_id: "start_button"
+    user: "333333333333333333"
+    expect:
+      type: "interaction_response"
+      data:
+        content_contains: "starting"

src/apicord.egg-info/PKG-INFO

@@ -0,0 +1,86 @@
+Metadata-Version: 2.4
+Name: apicord
+Version: 0.1.0
+Summary: Discord API Emulator for bot testing
+Author-email: Eaven Kimura <kimura.eaven@gmail.com>
+License: GPL-3.0
+Classifier: Development Status :: 3 - Alpha
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: GNU General Public License v3 (GPLv3)
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.10
+Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: 3.12
+Requires-Python: >=3.10
+Description-Content-Type: text/markdown
+License-File: LICENSE
+Requires-Dist: aiohttp>=3.9.0
+Requires-Dist: websockets>=12.0
+Requires-Dist: pyyaml>=6.0
+Requires-Dist: click>=8.1.0
+Requires-Dist: pydantic>=2.5.0
+Requires-Dist: pydantic-settings>=2.1.0
+Provides-Extra: dev
+Requires-Dist: pytest>=7.4.0; extra == "dev"
+Requires-Dist: pytest-asyncio>=0.21.0; extra == "dev"
+Requires-Dist: pytest-cov>=4.1.0; extra == "dev"
+Requires-Dist: black>=23.0.0; extra == "dev"
+Requires-Dist: ruff>=0.1.0; extra == "dev"
+Requires-Dist: mypy>=1.5.0; extra == "dev"
+Dynamic: license-file
+
+# APIcord
+
+Discord API Emulator for bot testing.
+
+A standalone Python CLI program that emulates the Discord API (REST + WebSocket Gateway), enabling self-contained testing of Discord bots without requiring a real Discord connection.
+
+## Features
+
+- **REST API Server** - Implements Discord REST API endpoints needed for bot operations
+- **WebSocket Gateway** - Emulates Discord's Gateway for real-time events (READY, INTERACTION_CREATE, etc.)
+- **State Management** - In-memory state with guilds, channels, users, messages, and interactions
+- **Test Scenarios** - YAML-based test scenarios for automated bot testing
+- **CLI Interface** - Easy-to-use commands for starting, testing, and managing the emulator
+
+## Installation
+
+```bash
+pip install -e .
+# Or for development
+pip install -e ".[dev]"
+```
+
+## Quick Start
+
+```bash
+# Start emulator with a test scenario
+apicord start --scenario scenarios/basic_test.yaml
+
+# Run automated test against a bot
+apicord test --scenario scenarios/full_test.yaml --bot-path /path/to/bot
+
+# Start with custom configuration
+apicord start --port 8080 --guilds 2 --channels 5
+```
+
+## Project Structure
+
+```
+apicord/
+├── src/apicord/
+│   ├── main.py              # CLI entry point
+│   ├── config.py            # Configuration management
+│   ├── rest/                # REST API server (aiohttp)
+│   ├── gateways/            # WebSocket gateway (websockets)
+│   ├── state/               # State management
+│   ├── models/              # Pydantic models for Discord objects
+│   └── cli/                 # CLI commands
+├── tests/                   # Unit tests
+├── scenarios/               # YAML test scenarios
+└── pyproject.toml
+```
+
+## License
+
+GPL-3.0 - See LICENSE file for details.

src/apicord.egg-info/SOURCES.txt

@@ -0,0 +1,24 @@
+LICENSE
+README.md
+pyproject.toml
+src/apicord/__init__.py
+src/apicord/config.py
+src/apicord/main.py
+src/apicord.egg-info/PKG-INFO
+src/apicord.egg-info/SOURCES.txt
+src/apicord.egg-info/dependency_links.txt
+src/apicord.egg-info/entry_points.txt
+src/apicord.egg-info/requires.txt
+src/apicord.egg-info/top_level.txt
+src/apicord/cli/__init__.py
+src/apicord/cli/commands.py
+src/apicord/gateways/__init__.py
+src/apicord/gateways/server.py
+src/apicord/models/__init__.py
+src/apicord/models/discord.py
+src/apicord/rest/__init__.py
+src/apicord/rest/server.py
+src/apicord/state/__init__.py
+src/apicord/state/manager.py
+tests/test_models.py
+tests/test_state_manager.py

src/apicord.egg-info/dependency_links.txt

@@ -0,0 +1 @@
+

src/apicord.egg-info/entry_points.txt

@@ -0,0 +1,2 @@
+[console_scripts]
+apicord = apicord.main:main

src/apicord.egg-info/requires.txt

@@ -0,0 +1,14 @@
+aiohttp>=3.9.0
+websockets>=12.0
+pyyaml>=6.0
+click>=8.1.0
+pydantic>=2.5.0
+pydantic-settings>=2.1.0
+
+[dev]
+pytest>=7.4.0
+pytest-asyncio>=0.21.0
+pytest-cov>=4.1.0
+black>=23.0.0
+ruff>=0.1.0
+mypy>=1.5.0

src/apicord.egg-info/top_level.txt

@@ -0,0 +1 @@
+apicord

src/apicord/__init__.py

@@ -0,0 +1,10 @@
+"""
+APIcord - Discord API Emulator for bot testing.
+
+A standalone Python CLI program that emulates the Discord API (REST + WebSocket Gateway),
+enabling self-contained testing of Discord bots without requiring a real Discord connection.
+"""
+
+__version__ = "0.1.0"
+__author__ = "Eaven Kimura"
+__license__ = "GPL-3.0"

src/apicord/cli/__init__.py

@@ -0,0 +1 @@
+"""CLI Commands Package"""

src/apicord/cli/commands.py

@@ -0,0 +1,355 @@
+"""
+CLI Commands for APIcord.
+"""
+
+import asyncio
+import json
+import logging
+import sys
+from pathlib import Path
+from typing import Optional
+
+import click
+import yaml
+
+from apicord.config import get_config
+from apicord.state.manager import StateManager
+from apicord.rest.server import RESTServer
+from apicord.gateways.server import GatewayServer
+
+logger = logging.getLogger("apicord")
+
+
+@click.command()
+@click.option(
+    "--scenario",
+    "-s",
+    type=click.Path(exists=True, path_type=Path),
+    help="Path to scenario YAML file",
+)
+@click.option(
+    "--guilds",
+    "-g",
+    type=int,
+    default=1,
+    help="Number of guilds to create (if no scenario)",
+)
+@click.option(
+    "--channels",
+    "-c",
+    type=int,
+    default=3,
+    help="Number of channels per guild (if no scenario)",
+)
+@click.option(
+    "--users",
+    "-u",
+    type=int,
+    default=5,
+    help="Number of test users (if no scenario)",
+)
+@click.pass_context
+def start(ctx: click.Context, scenario: Optional[Path], guilds: int, channels: int, users: int) -> None:
+    """Start the APIcord emulator server."""
+    config = ctx.obj["config"] if ctx.obj else get_config()
+
+    async def run_server():
+        # Initialize state manager
+        state_manager = StateManager(config)
+
+        # Load scenario if provided
+        if scenario:
+            logger.info(f"Loading scenario from {scenario}")
+            with open(scenario) as f:
+                scenario_data = yaml.safe_load(f)
+            await state_manager.load_scenario(scenario_data)
+        else:
+            logger.info(f"Creating default state: {guilds} guilds, {channels} channels/guild, {users} users")
+            await state_manager.create_default_state(guilds=guilds, channels_per_guild=channels, users=users)
+
+        # Start REST server
+        rest_server = RESTServer(config, state_manager)
+        rest_task = asyncio.create_task(rest_server.start())
+
+        # Start Gateway server
+        gateway_server = GatewayServer(config, state_manager)
+        gateway_task = asyncio.create_task(gateway_server.start())
+
+        logger.info(f"APIcord started!")
+        logger.info(f"  REST API: http://{config.host}:{config.rest_port}")
+        logger.info(f"  Gateway:  ws://{config.host}:{config.gateway_port}")
+        logger.info(f"  Bot Token: {config.bot_token}")
+        logger.info("Press Ctrl+C to stop")
+
+        try:
+            await asyncio.gather(rest_task, gateway_task)
+        except KeyboardInterrupt:
+            logger.info("Shutting down...")
+        finally:
+            await rest_server.stop()
+            await gateway_server.stop()
+            if config.persist_state:
+                await state_manager.save_state()
+                logger.info(f"State saved to {config.state_file}")
+
+    asyncio.run(run_server())
+
+
+@click.command()
+@click.option(
+    "--scenario",
+    "-s",
+    type=click.Path(exists=True, path_type=Path),
+    required=True,
+    help="Path to test scenario YAML file",
+)
+@click.option(
+    "--bot-path",
+    "-b",
+    type=click.Path(exists=True, path_type=Path),
+    required=True,
+    help="Path to bot project directory",
+)
+@click.option(
+    "--timeout",
+    "-t",
+    type=int,
+    default=60,
+    help="Test timeout in seconds",
+)
+@click.pass_context
+def test(ctx: click.Context, scenario: Path, bot_path: Path, timeout: int) -> None:
+    """Run automated test scenario against a bot."""
+    config = ctx.obj["config"] if ctx.obj else get_config()
+
+    async def run_test():
+        logger.info(f"Running test scenario: {scenario}")
+        logger.info(f"Bot path: {bot_path}")
+
+        # Load scenario
+        with open(scenario) as f:
+            scenario_data = yaml.safe_load(f)
+
+        # Initialize state manager with scenario
+        state_manager = StateManager(config)
+        await state_manager.load_scenario(scenario_data)
+
+        # Start emulator servers
+        rest_server = RESTServer(config, state_manager)
+        gateway_server = GatewayServer(config, state_manager)
+
+        rest_task = asyncio.create_task(rest_server.start())
+        gateway_task = asyncio.create_task(gateway_server.start())
+
+        # Give servers time to start
+        await asyncio.sleep(1)
+
+        try:
+            # Run bot in emulator mode
+            logger.info("Starting bot in emulator mode...")
+            bot_process = await asyncio.create_subprocess_exec(
+                sys.executable, "main.py",
+                "--emulator",
+                "--emulator-rest-url", config.get_rest_url(),
+                "--emulator-gateway-url", config.get_gateway_url(),
+                "--emulator-token", config.bot_token,
+                cwd=bot_path,
+                stdout=asyncio.subprocess.PIPE,
+                stderr=asyncio.subprocess.PIPE,
+            )
+
+            # Run scenario steps
+            test_result = await run_scenario_steps(scenario_data, state_manager, timeout)
+
+            # Wait for bot to finish (with timeout)
+            try:
+                await asyncio.wait_for(bot_process.wait(), timeout=5.0)
+            except asyncio.TimeoutError:
+                bot_process.terminate()
+                await bot_process.wait()
+
+            # Print result
+            if test_result.passed:
+                logger.info("✅ TEST PASSED")
+                return 0
+            else:
+                logger.error("❌ TEST FAILED")
+                for failure in test_result.failures:
+                    logger.error(f"  - {failure}")
+                return 1
+
+        finally:
+            await rest_server.stop()
+            await gateway_server.stop()
+
+    result = asyncio.run(run_test())
+    sys.exit(result)
+
+
+async def run_scenario_steps(scenario_data: dict, state_manager: StateManager, timeout: int) -> "TestResult":
+    """Execute scenario steps and validate expectations."""
+    from dataclasses import dataclass, field
+    from typing import List
+
+    @dataclass
+    class TestResult:
+        passed: bool = True
+        failures: List[str] = field(default_factory=list)
+
+    result = TestResult()
+
+    steps = scenario_data.get("steps", [])
+    if not steps:
+        logger.warning("No steps defined in scenario")
+        return result
+
+    logger.info(f"Executing {len(steps)} scenario steps...")
+
+    for i, step in enumerate(steps, 1):
+        action = step.get("action")
+        logger.info(f"Step {i}/{len(steps)}: {action}")
+
+        try:
+            if action == "slash_command":
+                await _execute_slash_command(step, state_manager)
+            elif action == "select_menu":
+                await _execute_select_menu(step, state_manager)
+            elif action == "button_click":
+                await _execute_button_click(step, state_manager)
+            elif action == "wait":
+                await asyncio.sleep(step.get("duration", 1))
+            else:
+                logger.warning(f"Unknown action: {action}")
+
+            # Validate expectations
+            if "expect" in step:
+                await _validate_expectation(step["expect"], state_manager)
+
+        except Exception as e:
+            result.passed = False
+            result.failures.append(f"Step {i} ({action}): {str(e)}")
+            logger.error(f"Step {i} failed: {e}")
+
+    return result
+
+
+async def _execute_slash_command(step: dict, state_manager: StateManager) -> None:
+    """Execute a slash command via the emulator."""
+    # This would send an interaction to the bot
+    # Implementation depends on the test framework
+    pass
+
+
+async def _execute_select_menu(step: dict, state_manager: StateManager) -> None:
+    """Execute a select menu interaction."""
+    pass
+
+
+async def _execute_button_click(step: dict, state_manager: StateManager) -> None:
+    """Execute a button click interaction."""
+    pass
+
+
+async def _validate_expectation(expect: dict, state_manager: StateManager) -> None:
+    """Validate an expectation against current state."""
+    pass
+
+
+@click.command()
+@click.option(
+    "--state-file",
+    "-f",
+    type=click.Path(path_type=Path),
+    default="apicord_state.json",
+    help="State file to reset",
+)
+@click.pass_context
+def reset(ctx: click.Context, state_file: Path) -> None:
+    """Reset emulator state."""
+    config = ctx.obj["config"] if ctx.obj else get_config()
+
+    if state_file.exists():
+        state_file.unlink()
+        logger.info(f"Removed state file: {state_file}")
+    else:
+        logger.info(f"State file does not exist: {state_file}")
+
+    # Also clear any in-memory state if running
+    logger.info("State reset complete")
+
+
+@click.command()
+@click.option(
+    "--state-file",
+    "-f",
+    type=click.Path(exists=True, path_type=Path),
+    default="apicord_state.json",
+    help="State file to export",
+)
+@click.option(
+    "--output",
+    "-o",
+    type=click.Path(path_type=Path),
+    help="Output file (default: stdout)",
+)
+@click.pass_context
+def export(ctx: click.Context, state_file: Path, output: Optional[Path]) -> None:
+    """Export emulator state to JSON."""
+    config = ctx.obj["config"] if ctx.obj else get_config()
+
+    if not state_file.exists():
+        logger.error(f"State file not found: {state_file}")
+        sys.exit(1)
+
+    with open(state_file) as f:
+        state = json.load(f)
+
+    if output:
+        with open(output, "w") as f:
+            json.dump(state, f, indent=2)
+        logger.info(f"State exported to {output}")
+    else:
+        print(json.dumps(state, indent=2))
+
+
+@click.command()
+@click.option(
+    "--scenario",
+    "-s",
+    type=click.Path(exists=True, path_type=Path),
+    required=True,
+    help="Path to scenario YAML file to validate",
+)
+@click.pass_context
+def validate(ctx: click.Context, scenario: Path) -> None:
+    """Validate a scenario YAML file."""
+    logger.info(f"Validating scenario: {scenario}")
+
+    with open(scenario) as f:
+        try:
+            scenario_data = yaml.safe_load(f)
+        except yaml.YAMLError as e:
+            logger.error(f"Invalid YAML: {e}")
+            sys.exit(1)
+
+    # Validate required fields
+    required_fields = ["name", "steps"]
+    for field in required_fields:
+        if field not in scenario_data:
+            logger.error(f"Missing required field: {field}")
+            sys.exit(1)
+
+    # Validate steps
+    steps = scenario_data.get("steps", [])
+    if not steps:
+        logger.warning("Scenario has no steps")
+
+    valid_actions = {"slash_command", "select_menu", "button_click", "wait"}
+    for i, step in enumerate(steps, 1):
+        action = step.get("action")
+        if action not in valid_actions:
+            logger.error(f"Step {i}: Invalid action '{action}'. Valid actions: {valid_actions}")
+            sys.exit(1)
+
+    logger.info(f"✅ Scenario '{scenario_data.get('name', 'unnamed')}' is valid")
+    logger.info(f"  Steps: {len(steps)}")

src/apicord/config.py

@@ -0,0 +1,81 @@
+"""
+Configuration Management Module
+
+Handles loading, validation, and access to emulator configuration.
+Supports both config file and environment variable overrides.
+"""
+
+import os
+from pathlib import Path
+from typing import Optional
+
+from pydantic import Field
+from pydantic_settings import BaseSettings
+
+
+class EmulatorConfig(BaseSettings):
+    """Emulator configuration loaded from environment variables and config file."""
+
+    # Server settings
+    host: str = Field(default="127.0.0.1", description="Host to bind the emulator server")
+    rest_port: int = Field(default=8080, description="Port for REST API server")
+    gateway_port: int = Field(default=8081, description="Port for WebSocket Gateway")
+
+    # Discord API compatibility
+    api_version: int = Field(default=10, description="Discord API version to emulate")
+    gateway_version: int = Field(default=10, description="Gateway version to emulate")
+
+    # Bot settings (for testing)
+    bot_token: str = Field(default="test_token_123", description="Test bot token")
+    bot_id: str = Field(default="444444444444444444", description="Test bot user ID")
+    bot_username: str = Field(default="TestBot", description="Test bot username")
+    bot_discriminator: str = Field(default="0000", description="Test bot discriminator")
+
+    # State settings
+    persist_state: bool = Field(default=False, description="Persist state to disk")
+    state_file: str = Field(default="apicord_state.json", description="State persistence file")
+
+    # Rate limiting (optional)
+    enable_rate_limits: bool = Field(default=False, description="Enable Discord-style rate limits")
+    rate_limit_requests: int = Field(default=50, description="Requests per rate limit window")
+    rate_limit_window: float = Field(default=1.0, description="Rate limit window in seconds")
+
+    # Logging
+    log_level: str = Field(default="INFO", description="Logging level")
+    log_format: str = Field(default="%(asctime)s - %(name)s - %(levelname)s - %(message)s")
+
+    # Scenario
+    default_scenario: Optional[str] = Field(default=None, description="Default scenario to load")
+
+    model_config = {
+        "env_prefix": "APICORD_",
+        "env_file": ".env",
+        "env_file_encoding": "utf-8",
+        "extra": "ignore",
+    }
+
+    def get_rest_url(self) -> str:
+        """Get the REST API base URL."""
+        return f"http://{self.host}:{self.rest_port}"
+
+    def get_gateway_url(self) -> str:
+        """Get the WebSocket Gateway URL."""
+        return f"ws://{self.host}:{self.gateway_port}"
+
+
+# Global config instance
+_config: Optional[EmulatorConfig] = None
+
+
+def get_config() -> EmulatorConfig:
+    """Get the global config instance."""
+    global _config
+    if _config is None:
+        _config = EmulatorConfig()
+    return _config
+
+
+def set_config(config: EmulatorConfig) -> None:
+    """Set the global config instance."""
+    global _config
+    _config = config

src/apicord/gateways/__init__.py

@@ -0,0 +1 @@
+"""WebSocket Gateway Package"""

src/apicord/gateways/server.py

@@ -0,0 +1,285 @@
+"""
+WebSocket Gateway Server Module
+
+Implements the Discord Gateway WebSocket server for real-time events.
+"""
+
+import asyncio
+import json
+import logging
+import random
+import time
+from typing import Any, Dict, Optional, Set
+
+import websockets
+from websockets.server import WebSocketServerProtocol
+
+from apicord.config import EmulatorConfig
+from apicord.state.manager import StateManager
+from apicord.models import (
+    User,
+    Guild,
+    Channel,
+    Role,
+    Interaction,
+    InteractionType,
+    GatewayInfo,
+)
+
+logger = logging.getLogger("apicord.gateway")
+
+
+class GatewayConnection:
+    """Represents a single WebSocket connection to the gateway."""
+
+    def __init__(
+        self,
+        websocket: WebSocketServerProtocol,
+        config: EmulatorConfig,
+        state: StateManager,
+    ) -> None:
+        self.ws = websocket
+        self.config = config
+        self.state = state
+        self.sequence: Optional[int] = None
+        self.session_id: Optional[str] = None
+        self.heartbeat_interval: float = 41250 / 1000  # 41.25 seconds (Discord default)
+        self.heartbeat_task: Optional[asyncio.Task] = None
+        self.identified: bool = False
+        self.user: Optional[User] = None
+        self.guilds: Set[str] = set()
+        self._last_heartbeat_ack: bool = True
+
+    async def handle(self) -> None:
+        """Main connection handler loop."""
+        logger.info(f"New gateway connection from {self.ws.remote_address}")
+
+        try:
+            # Send HELLO
+            await self._send_hello()
+
+            # Process incoming messages
+            async for message in self.ws:
+                try:
+                    data = json.loads(message)
+                    await self._handle_message(data)
+                except json.JSONDecodeError:
+                    logger.warning(f"Invalid JSON from {self.ws.remote_address}")
+                except Exception as e:
+                    logger.error(f"Error handling message: {e}", exc_info=True)
+
+        except websockets.exceptions.ConnectionClosed:
+            logger.info(f"Connection closed: {self.ws.remote_address}")
+        except Exception as e:
+            logger.error(f"Connection error: {e}", exc_info=True)
+        finally:
+            await self._cleanup()
+
+    async def _send_hello(self) -> None:
+        """Send HELLO payload (opcode 10)."""
+        hello = {
+            "op": 10,
+            "d": {
+                "heartbeat_interval": int(self.heartbeat_interval * 1000),
+            }
+        }
+        await self._send(hello)
+        logger.debug("Sent HELLO")
+
+        # Start heartbeat monitoring
+        self.heartbeat_task = asyncio.create_task(self._heartbeat_monitor())
+
+    async def _heartbeat_monitor(self) -> None:
+        """Monitor heartbeats and send heartbeats."""
+        while True:
+            try:
+                await asyncio.sleep(self.heartbeat_interval)
+
+                if not self._last_heartbeat_ack:
+                    logger.warning("Heartbeat ACK not received, closing connection")
+                    await self.ws.close(code=4009, reason="Heartbeat timeout")
+                    break
+
+                self._last_heartbeat_ack = False
+                await self._send({"op": 1, "d": self.sequence})
+
+            except asyncio.CancelledError:
+                break
+            except Exception as e:
+                logger.error(f"Heartbeat error: {e}")
+                break
+
+    async def _handle_message(self, data: Dict[str, Any]) -> None:
+        """Handle incoming gateway message."""
+        op = data.get("op")
+        payload = data.get("d")
+        seq = data.get("s")
+        event_name = data.get("t")
+
+        # Update sequence number
+        if seq is not None:
+            self.sequence = seq
+
+        if op == 1:  # Heartbeat
+            await self._handle_heartbeat()
+        elif op == 2:  # Identify
+            await self._handle_identify(payload)
+        elif op == 3:  # Presence Update
+            await self._handle_presence_update(payload)
+        elif op == 4:  # Voice State Update
+            pass
+        elif op == 6:  # Resume
+            await self._handle_resume(payload)
+        elif op == 11:  # Heartbeat ACK
+            self._last_heartbeat_ack = True
+        else:
+            logger.warning(f"Unknown opcode: {op}")
+
+    async def _handle_heartbeat(self) -> None:
+        """Handle incoming heartbeat (opcode 1)."""
+        self._last_heartbeat_ack = True
+        await self._send({"op": 11})  # Heartbeat ACK
+        logger.debug("Sent heartbeat ACK")
+
+    async def _handle_identify(self, payload: Dict[str, Any]) -> None:
+        """Handle IDENTIFY payload (opcode 2)."""
+        token = payload.get("token")
+        if token != self.config.bot_token:
+            logger.warning("Invalid token in IDENTIFY")
+            await self.ws.close(code=4004, reason="Invalid token")
+            return
+
+        # Mark as identified
+        self.identified = True
+        self.session_id = f"session_{random.randint(100000, 999999)}"
+
+        # Get bot user
+        self.user = self.state.get_bot_user()
+
+        # Send READY event
+        ready_data = {
+            "v": self.config.gateway_version,
+            "user": self.user.model_dump() if self.user else {},
+            "guilds": [
+                {"id": g.id, "unavailable": False} for g in self.state.list_guilds()
+            ],
+            "session_id": self.session_id,
+            "shard": [0, 1],
+            "application": {
+                "id": self.config.bot_id,
+                "flags": 0
+            }
+        }
+
+        await self._send({
+            "op": 0,
+            "t": "READY",
+            "s": self.sequence,
+            "d": ready_data
+        })
+
+        logger.info(f"Bot identified: {self.user.username if self.user else 'Unknown'} ({self.session_id})")
+
+    async def _handle_presence_update(self, payload: Dict[str, Any]) -> None:
+        """Handle presence update."""
+        # Just acknowledge for now
+        pass
+
+    async def _handle_resume(self, payload: Dict[str, Any]) -> None:
+        """Handle RESUME payload (opcode 6)."""
+        token = payload.get("token")
+        session_id = payload.get("session_id")
+        seq = payload.get("seq")
+
+        if token != self.config.bot_token or session_id != self.session_id:
+            logger.warning("Invalid RESUME")
+            await self.ws.close(code=4004, reason="Invalid session")
+            return
+
+        self.identified = True
+        self.sequence = seq
+
+        # Send RESUMED event
+        await self._send({
+            "op": 0,
+            "t": "RESUMED",
+            "s": self.sequence,
+            "d": {}
+        })
+
+        logger.info("Session resumed")
+
+    async def _send(self, payload: Dict[str, Any]) -> None:
+        """Send JSON payload over WebSocket."""
+        await self.ws.send(json.dumps(payload))
+
+    async def send_event(self, event_name: str, data: Dict[str, Any]) -> None:
+        """Send a gateway event (opcode 0)."""
+        if not self.identified:
+            return
+
+        self.sequence = (self.sequence or 0) + 1
+        payload = {
+            "op": 0,
+            "t": event_name,
+            "s": self.sequence,
+            "d": data
+        }
+        await self._send(payload)
+
+    async def _cleanup(self) -> None:
+        """Cleanup on connection close."""
+        if self.heartbeat_task:
+            self.heartbeat_task.cancel()
+            try:
+                await self.heartbeat_task
+            except asyncio.CancelledError:
+                pass
+
+
+class GatewayServer:
+    """Discord Gateway WebSocket server."""
+
+    def __init__(self, config: EmulatorConfig, state: StateManager) -> None:
+        self.config = config
+        self.state = state
+        self.server: Optional[websockets.WebSocketServer] = None
+        self.connections: Set[GatewayConnection] = set()
+
+    async def start(self) -> None:
+        """Start the WebSocket gateway server."""
+        self.server = await websockets.serve(
+            self._handle_connection,
+            self.config.host,
+            self.config.gateway_port,
+            ping_interval=20,
+            ping_timeout=10,
+        )
+        logger.info(f"Gateway server started on ws://{self.config.host}:{self.config.gateway_port}")
+
+    async def _handle_connection(self, websocket: WebSocketServerProtocol) -> None:
+        """Handle new WebSocket connection."""
+        connection = GatewayConnection(websocket, self.config, self.state)
+        self.connections.add(connection)
+
+        try:
+            await connection.handle()
+        finally:
+            self.connections.discard(connection)
+
+    def broadcast_event(self, event_name: str, data: Dict[str, Any]) -> None:
+        """Broadcast an event to all connected clients."""
+        for conn in self.connections:
+            if conn.identified:
+                asyncio.create_task(conn.send_event(event_name, data))
+
+    async def stop(self) -> None:
+        """Stop the gateway server."""
+        # Close all connections
+        for conn in self.connections:
+            await conn.ws.close(code=1001, reason="Server shutting down")
+
+        if self.server:
+            self.server.close()
+            await self.server.wait_closed()
+        logger.info("Gateway server stopped")

src/apicord/main.py

@@ -0,0 +1,133 @@
+"""
+Main Entry Point for APIcord CLI.
+"""
+
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+import click
+
+from apicord.config import EmulatorConfig, get_config, set_config
+from apicord.cli.commands import start, test, reset, export, validate
+
+
+def setup_logging(level: str = "INFO", format_str: str = None) -> None:
+    """Configure application-wide logging."""
+    if format_str is None:
+        format_str = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+
+    logging.basicConfig(
+        level=getattr(logging, level.upper()),
+        format=format_str,
+        handlers=[
+            logging.StreamHandler(sys.stdout),
+        ],
+    )
+
+
+@click.group()
+@click.option(
+    "--config-file",
+    "-c",
+    type=click.Path(exists=True, path_type=Path),
+    help="Path to configuration file (YAML)",
+)
+@click.option(
+    "--log-level",
+    "-l",
+    type=click.Choice(["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]),
+    default="INFO",
+    help="Set logging level",
+)
+@click.option(
+    "--host",
+    default="127.0.0.1",
+    help="Host to bind the emulator server",
+)
+@click.option(
+    "--rest-port",
+    type=int,
+    default=8080,
+    help="Port for REST API server",
+)
+@click.option(
+    "--gateway-port",
+    type=int,
+    default=8081,
+    help="Port for WebSocket Gateway",
+)
+@click.option(
+    "--bot-token",
+    default="test_token_123",
+    help="Test bot token",
+)
+@click.option(
+    "--persist-state/--no-persist-state",
+    default=False,
+    help="Persist state to disk",
+)
+@click.pass_context
+def cli(
+    ctx: click.Context,
+    config_file: Path = None,
+    log_level: str = "INFO",
+    host: str = "127.0.0.1",
+    rest_port: int = 8080,
+    gateway_port: int = 8081,
+    bot_token: str = "test_token_123",
+    persist_state: bool = False,
+) -> None:
+    """APIcord - Discord API Emulator for bot testing.
+
+    A standalone Python CLI program that emulates the Discord API
+    (REST + WebSocket Gateway), enabling self-contained testing of
+    Discord bots without requiring a real Discord connection.
+    """
+    # Setup logging early
+    setup_logging(log_level)
+
+    # Load config from file if provided, otherwise use env vars and CLI args
+    if config_file:
+        import yaml
+        with open(config_file) as f:
+            file_config = yaml.safe_load(f)
+        config = EmulatorConfig(**file_config)
+    else:
+        config = EmulatorConfig(
+            host=host,
+            rest_port=rest_port,
+            gateway_port=gateway_port,
+            bot_token=bot_token,
+            persist_state=persist_state,
+            log_level=log_level,
+        )
+
+    set_config(config)
+
+    # Store config in context for subcommands
+    ctx.ensure_object(dict)
+    ctx.obj["config"] = config
+
+
+# Add subcommands
+cli.add_command(start)
+cli.add_command(test)
+cli.add_command(reset)
+cli.add_command(export)
+cli.add_command(validate)
+
+
+def main() -> int:
+    """Main entry point for the CLI."""
+    try:
+        cli()
+        return 0
+    except Exception as e:
+        logging.getLogger("apicord").critical(f"Fatal error: {e}", exc_info=True)
+        return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())

src/apicord/models/__init__.py

@@ -0,0 +1,51 @@
+"""Pydantic Models for Discord Objects"""
+
+from apicord.models.discord import (
+    User,
+    BotUser,
+    Role,
+    Channel,
+    ChannelType,
+    Guild,
+    Message,
+    MessageType,
+    Interaction,
+    InteractionType,
+    InteractionCallbackType,
+    ComponentType,
+    ButtonStyle,
+    Snowflake,
+    ScenarioData,
+    ScenarioGuild,
+    ScenarioChannel,
+    ScenarioRole,
+    ScenarioUser,
+    ScenarioBot,
+    GatewayInfo,
+    RESTError,
+)
+
+__all__ = [
+    "User",
+    "BotUser",
+    "Role",
+    "Channel",
+    "ChannelType",
+    "Guild",
+    "Message",
+    "MessageType",
+    "Interaction",
+    "InteractionType",
+    "InteractionCallbackType",
+    "ComponentType",
+    "ButtonStyle",
+    "Snowflake",
+    "ScenarioData",
+    "ScenarioGuild",
+    "ScenarioChannel",
+    "ScenarioRole",
+    "ScenarioUser",
+    "ScenarioBot",
+    "GatewayInfo",
+    "RESTError",
+]

src/apicord/models/discord.py

@@ -0,0 +1,338 @@
+"""
+Pydantic Models for Discord Objects
+
+These models represent the core Discord objects used by the emulator.
+Based on Discord API documentation.
+"""
+
+from typing import Any, Dict, List, Optional, Union
+from pydantic import BaseModel, Field
+from enum import IntEnum
+
+
+class ChannelType(IntEnum):
+    GUILD_TEXT = 0
+    DM = 1
+    GUILD_VOICE = 2
+    GROUP_DM = 3
+    GUILD_CATEGORY = 4
+    GUILD_NEWS = 5
+    GUILD_STORE = 6
+    GUILD_NEWS_THREAD = 10
+    GUILD_PUBLIC_THREAD = 11
+    GUILD_PRIVATE_THREAD = 12
+    GUILD_STAGE_VOICE = 13
+    GUILD_DIRECTORY = 14
+    GUILD_FORUM = 15
+
+
+class MessageType(IntEnum):
+    DEFAULT = 0
+    RECIPIENT_ADD = 1
+    RECIPIENT_REMOVE = 2
+    CALL = 3
+    CHANNEL_NAME_CHANGE = 4
+    CHANNEL_ICON_CHANGE = 5
+    CHANNEL_PINNED_MESSAGE = 6
+    USER_JOIN = 7
+    GUILD_BOOST = 8
+    GUILD_BOOST_TIER_1 = 9
+    GUILD_BOOST_TIER_2 = 10
+    GUILD_BOOST_TIER_3 = 11
+    CHANNEL_FOLLOW_ADD = 12
+    GUILD_DISCOVERY_DISQUALIFIED = 14
+    GUILD_DISCOVERY_REQUALIFIED = 15
+    GUILD_DISCOVERY_GRACE_PERIOD_INITIAL_WARNING = 16
+    GUILD_DISCOVERY_GRACE_PERIOD_FINAL_WARNING = 17
+    THREAD_CREATED = 18
+    REPLY = 19
+    CHAT_INPUT_COMMAND = 20
+    THREAD_STARTER_MESSAGE = 21
+    GUILD_INVITE_REMINDER = 22
+    CONTEXT_MENU_COMMAND = 23
+
+
+class InteractionType(IntEnum):
+    PING = 1
+    APPLICATION_COMMAND = 2
+    MESSAGE_COMPONENT = 3
+    APPLICATION_COMMAND_AUTOCOMPLETE = 4
+    MODAL_SUBMIT = 5
+
+
+class InteractionCallbackType(IntEnum):
+    PONG = 1
+    CHANNEL_MESSAGE_WITH_SOURCE = 4
+    DEFERRED_CHANNEL_MESSAGE_WITH_SOURCE = 5
+    DEFERRED_UPDATE_MESSAGE = 6
+    UPDATE_MESSAGE = 7
+    APPLICATION_COMMAND_AUTOCOMPLETE_RESULT = 8
+    MODAL = 9
+
+
+class ComponentType(IntEnum):
+    ACTION_ROW = 1
+    BUTTON = 2
+    SELECT_MENU = 3
+    TEXT_INPUT = 4
+    USER_SELECT = 5
+    ROLE_SELECT = 6
+    MENTIONABLE_SELECT = 7
+
+
+class ButtonStyle(IntEnum):
+    PRIMARY = 1
+    SECONDARY = 2
+    SUCCESS = 3
+    DANGER = 4
+    LINK = 5
+
+
+# Base Models
+
+import json
+import re
+from typing import Any, Dict, List, Optional, Union
+from pydantic import BaseModel, Field
+from pydantic_core import core_schema
+from enum import IntEnum
+
+
+class Snowflake(str):
+    """Discord snowflake ID."""
+    
+    @classmethod
+    def __get_pydantic_core_schema__(cls, source_type, handler):
+        return core_schema.with_info_plain_validator_function(
+            cls.validate,
+            serialization=core_schema.to_string_ser_schema(),
+        )
+
+    @classmethod
+    def validate(cls, v, _info):
+        if isinstance(v, int):
+            return str(v)
+        if isinstance(v, str) and v.isdigit():
+            return v
+        raise ValueError("Snowflake must be a numeric string or integer")
+
+
+class User(BaseModel):
+    """Discord User object."""
+    id: Snowflake
+    username: str
+    discriminator: str
+    bot: bool = False
+    avatar: Optional[str] = None
+    system: bool = False
+    mfa_enabled: bool = False
+    locale: Optional[str] = None
+    verified: bool = False
+    email: Optional[str] = None
+    flags: int = 0
+    premium_type: int = 0
+    public_flags: int = 0
+    # Guild-specific roles (guild_id -> list of role_ids)
+    guild_roles: Dict[str, List[str]] = Field(default_factory=dict)
+
+
+class BotUser(User):
+    """Bot user with additional fields."""
+    bot: bool = True
+    token: Optional[str] = None
+
+
+class Role(BaseModel):
+    """Discord Role object."""
+    id: Snowflake
+    name: str
+    color: int = 0
+    hoist: bool = False
+    position: int = 0
+    permissions: str  # Bitwise permissions as string
+    managed: bool = False
+    mentionable: bool = False
+    tags: Optional[Dict[str, Any]] = None
+    guild_id: Optional[str] = None
+
+
+class Channel(BaseModel):
+    """Discord Channel object."""
+    id: Snowflake
+    type: ChannelType
+    guild_id: Optional[str] = None
+    name: Optional[str] = None
+    topic: Optional[str] = None
+    position: int = 0
+    permission_overwrites: List[Dict[str, Any]] = Field(default_factory=list)
+    nsfw: bool = False
+    parent_id: Optional[str] = None
+    rate_limit_per_user: int = 0
+    # Message tracking
+    message_ids: List[str] = Field(default_factory=list)
+
+
+class Guild(BaseModel):
+    """Discord Guild object."""
+    id: Snowflake
+    name: str
+    icon: Optional[str] = None
+    owner_id: Snowflake
+    roles: List[str] = Field(default_factory=list)  # Role IDs
+    channels: List[str] = Field(default_factory=list)  # Channel IDs
+    icon_hash: Optional[str] = None
+    splash: Optional[str] = None
+    discovery_splash: Optional[str] = None
+    features: List[str] = Field(default_factory=list)
+    verification_level: int = 0
+    default_message_notifications: int = 0
+    explicit_content_filter: int = 0
+    mfa_level: int = 0
+    application_id: Optional[str] = None
+    system_channel_id: Optional[str] = None
+    system_channel_flags: int = 0
+    rules_channel_id: Optional[str] = None
+    max_presences: Optional[int] = None
+    max_members: int = 250000
+    vanity_url_code: Optional[str] = None
+    description: Optional[str] = None
+    banner: Optional[str] = None
+    premium_tier: int = 0
+    premium_subscription_count: int = 0
+    preferred_locale: str = "en-US"
+    public_updates_channel_id: Optional[str] = None
+    max_video_channel_users: int = 25
+    approximate_member_count: int = 0
+    approximate_presence_count: int = 0
+    welcome_screen: Optional[Dict[str, Any]] = None
+    nsfw_level: int = 0
+
+
+class Message(BaseModel):
+    """Discord Message object."""
+    id: Snowflake
+    channel_id: Snowflake
+    author: User
+    content: str
+    timestamp: str  # ISO8601
+    edited_timestamp: Optional[str] = None
+    tts: bool = False
+    mention_everyone: bool = False
+    mentions: List[User] = Field(default_factory=list)
+    mention_roles: List[str] = Field(default_factory=list)
+    mention_channels: List[Dict[str, Any]] = Field(default_factory=list)
+    attachments: List[Dict[str, Any]] = Field(default_factory=list)
+    embeds: List[Dict[str, Any]] = Field(default_factory=list)
+    reactions: List[Dict[str, Any]] = Field(default_factory=list)
+    nonce: Optional[str] = None
+    pinned: bool = False
+    webhook_id: Optional[str] = None
+    type: MessageType = MessageType.DEFAULT
+    activity: Optional[Dict[str, Any]] = None
+    application: Optional[Dict[str, Any]] = None
+    application_id: Optional[str] = None
+    message_reference: Optional[Dict[str, Any]] = None
+    flags: int = 0
+    components: List[Dict[str, Any]] = Field(default_factory=list)
+
+
+class Interaction(BaseModel):
+    """Discord Interaction object."""
+    id: Snowflake
+    type: InteractionType
+    application_id: Snowflake
+    data: Optional[Dict[str, Any]] = None
+    guild_id: Optional[str] = None
+    channel_id: Optional[str] = None
+    channel: Optional[Channel] = None
+    member: Optional[Dict[str, Any]] = None
+    user: Optional[User] = None
+    token: str
+    version: int = 1
+    message: Optional[Message] = None
+    app_permissions: Optional[str] = None
+    locale: str = "en-US"
+    guild_locale: str = "en-US"
+    responded: bool = False
+
+
+class InteractionResponse(BaseModel):
+    """Interaction response payload."""
+    type: InteractionCallbackType
+    data: Optional[Dict[str, Any]] = None
+
+
+# Scenario Models
+
+class ScenarioGuild(BaseModel):
+    id: str
+    name: str
+    icon: Optional[str] = None
+    owner_id: str
+    roles: List[str] = []
+    channels: List[str] = []
+
+
+class ScenarioChannel(BaseModel):
+    id: str
+    guild_id: str
+    name: str
+    type: ChannelType = ChannelType.GUILD_TEXT
+    position: int = 0
+
+
+class ScenarioRole(BaseModel):
+    id: str
+    guild_id: str
+    name: str
+    color: int = 0
+    hoist: bool = False
+    position: int = 0
+    permissions: str = "104324161"
+    managed: bool = False
+    mentionable: bool = False
+
+
+class ScenarioUser(BaseModel):
+    id: str
+    username: str
+    discriminator: str = "0000"
+    bot: bool = False
+    guild_roles: Dict[str, List[str]] = {}
+
+
+class ScenarioBot(BaseModel):
+    id: str
+    username: str
+    discriminator: str = "0000"
+    token: Optional[str] = None
+
+
+class ScenarioData(BaseModel):
+    name: str
+    description: Optional[str] = None
+    guilds: List[ScenarioGuild] = []
+    channels: List[ScenarioChannel] = []
+    roles: List[ScenarioRole] = []
+    users: List[ScenarioUser] = []
+    bot: Optional[ScenarioBot] = None
+    steps: List[Dict[str, Any]] = []
+
+
+# REST API Response Models
+
+class GatewayInfo(BaseModel):
+    url: str
+    shards: int
+    session_start_limit: Dict[str, int] = {
+        "total": 1000,
+        "remaining": 999,
+        "reset_after": 3600000,
+        "max_concurrency": 1
+    }
+
+
+class RESTError(BaseModel):
+    code: int
+    message: str
+    errors: Optional[Dict[str, Any]] = None

src/apicord/rest/__init__.py

@@ -0,0 +1 @@
+"""REST API Server Package"""

src/apicord/rest/server.py

@@ -0,0 +1,427 @@
+"""
+REST API Server Module
+
+Implements the Discord REST API endpoints needed for bot operations.
+"""
+
+import logging
+from typing import Any, Dict, List, Optional
+
+from aiohttp import web
+from aiohttp.web_request import Request
+from aiohttp.web_response import Response
+
+from apicord.config import EmulatorConfig
+from apicord.state.manager import StateManager
+from apicord.models import (
+    GatewayInfo,
+    RESTError,
+    User,
+    Guild,
+    Channel,
+    Role,
+    Message,
+    Interaction,
+    InteractionResponse,
+    InteractionCallbackType,
+    ComponentType,
+    ButtonStyle,
+)
+
+logger = logging.getLogger("apicord.rest")
+
+
+class RESTServer:
+    """Discord REST API server implementation."""
+
+    def __init__(self, config: EmulatorConfig, state_manager: StateManager) -> None:
+        self.config = config
+        self.state = state_manager
+        self.app = web.Application()
+        self.runner: Optional[web.AppRunner] = None
+        self.site: Optional[web.TCPSite] = None
+
+        # Setup routes
+        self._setup_routes()
+
+        # Middleware
+        self.app.middlewares.append(self._auth_middleware)
+        self.app.middlewares.append(self._rate_limit_middleware)
+
+    def _setup_routes(self) -> None:
+        """Setup all REST API routes."""
+        # Gateway
+        self.app.router.add_get("/api/v{version}/gateway", self.gateway)
+        self.app.router.add_get("/api/v{version}/gateway/bot", self.gateway_bot)
+
+        # Auth
+        self.app.router.add_post("/api/v{version}/auth/login", self.auth_login)
+
+        # Users
+        self.app.router.add_get("/api/v{version}/users/@me", self.get_current_user)
+
+        # Guilds
+        self.app.router.add_get("/api/v{version}/guilds", self.list_guilds)
+        self.app.router.add_get("/api/v{version}/guilds/{guild_id}", self.get_guild)
+        self.app.router.add_get("/api/v{version}/guilds/{guild_id}/channels", self.get_guild_channels)
+        self.app.router.add_get("/api/v{version}/guilds/{guild_id}/roles", self.get_guild_roles)
+        self.app.router.add_get("/api/v{version}/guilds/{guild_id}/members", self.list_guild_members)
+
+        # Channels
+        self.app.router.add_get("/api/v{version}/channels/{channel_id}", self.get_channel)
+        self.app.router.add_get("/api/v{version}/channels/{channel_id}/messages", self.get_channel_messages)
+        self.app.router.add_post("/api/v{version}/channels/{channel_id}/messages", self.create_message)
+        self.app.router.add_patch("/api/v{version}/channels/{channel_id}/messages/{message_id}", self.update_message)
+        self.app.router.add_delete("/api/v{version}/channels/{channel_id}/messages/{message_id}", self.delete_message)
+
+        # Interactions
+        self.app.router.add_post(
+            "/api/v{version}/interactions/{interaction_id}/{interaction_token}/callback",
+            self.interaction_callback
+        )
+
+        # Webhooks (for components)
+        self.app.router.add_post("/api/v{version}/webhooks/{webhook_id}/{webhook_token}", self.execute_webhook)
+
+    async def _auth_middleware(self, app: web.Application, handler):
+        """Authentication middleware - validates bot token for protected routes."""
+        async def middleware(request: Request):
+            # Skip auth for gateway and login endpoints
+            if request.path in [f"/api/v{self.config.api_version}/gateway",
+                                f"/api/v{self.config.api_version}/gateway/bot",
+                                f"/api/v{self.config.api_version}/auth/login"]:
+                return await handler(request)
+
+            # Check Authorization header
+            auth_header = request.headers.get("Authorization", "")
+            if not auth_header.startswith("Bot "):
+                return web.json_response(
+                    {"message": "401: Unauthorized", "code": 0},
+                    status=401
+                )
+
+            token = auth_header[4:]  # Remove "Bot " prefix
+            if token != self.config.bot_token:
+                return web.json_response(
+                    {"message": "401: Unauthorized", "code": 0},
+                    status=401
+                )
+
+            return await handler(request)
+        return middleware
+
+    async def _rate_limit_middleware(self, app: web.Application, handler):
+        """Rate limiting middleware (optional)."""
+        if not self.config.enable_rate_limits:
+            return handler
+
+        # Simple in-memory rate limiting
+        from collections import defaultdict
+        import time
+
+        requests = defaultdict(list)
+
+        async def middleware(request: Request):
+            client_ip = request.remote
+            now = time.time()
+
+            # Clean old entries
+            cutoff = now - self.config.rate_limit_window
+            requests[client_ip] = [t for t in requests[client_ip] if t > cutoff]
+
+            if len(requests[client_ip]) >= self.config.rate_limit_requests:
+                retry_after = self.config.rate_limit_window
+                return web.json_response(
+                    {"message": "You are being rate limited.", "retry_after": retry_after, "global": False},
+                    status=429,
+                    headers={"Retry-After": str(int(retry_after))}
+                )
+
+            requests[client_ip].append(now)
+            return await handler(request)
+
+        return middleware
+
+    # --- Gateway Endpoints ---
+
+    async def gateway(self, request: Request) -> Response:
+        """GET /gateway - Returns the WebSocket gateway URL."""
+        info = GatewayInfo(url=self.config.get_gateway_url())
+        return web.json_response(info.model_dump())
+
+    async def gateway_bot(self, request: Request) -> Response:
+        """GET /gateway/bot - Returns the WebSocket gateway URL and bot info."""
+        info = GatewayInfo(url=self.config.get_gateway_url())
+        return web.json_response(info.model_dump())
+
+    # --- Auth Endpoints ---
+
+    async def auth_login(self, request: Request) -> Response:
+        """POST /auth/login - Validates bot token (simplified)."""
+        # In real Discord, this would validate email/password
+        # For emulator, we just return success if token matches
+        try:
+            data = await request.json()
+        except Exception:
+            return web.json_response({"message": "Invalid JSON"}, status=400)
+
+        # Return a fake user for the bot
+        bot_user = self.state.get_bot_user()
+        if bot_user:
+            return web.json_response(bot_user.model_dump(exclude={"token"}))
+
+        return web.json_response(
+            RESTError(code=400, message="Invalid credentials").model_dump(),
+            status=400
+        )
+
+    # --- User Endpoints ---
+
+    async def get_current_user(self, request: Request) -> Response:
+        """GET /users/@me - Returns the bot user."""
+        bot_user = self.state.get_bot_user()
+        if not bot_user:
+            return web.json_response(
+                RESTError(code=404, message="Bot user not found").model_dump(),
+                status=404
+            )
+        return web.json_response(bot_user.model_dump(exclude={"token"}))
+
+    # --- Guild Endpoints ---
+
+    async def list_guilds(self, request: Request) -> Response:
+        """GET /guilds - Returns list of guilds the bot is in."""
+        guilds = self.state.list_guilds()
+        return web.json_response([g.model_dump() for g in guilds])
+
+    async def get_guild(self, request: Request) -> Response:
+        """GET /guilds/{guild_id} - Returns a specific guild."""
+        guild_id = request.match_info["guild_id"]
+        guild = self.state.get_guild(guild_id)
+        if not guild:
+            return web.json_response(
+                RESTError(code=10004, message="Unknown Guild").model_dump(),
+                status=404
+            )
+        return web.json_response(guild.model_dump())
+
+    async def get_guild_channels(self, request: Request) -> Response:
+        """GET /guilds/{guild_id}/channels - Returns channels in a guild."""
+        guild_id = request.match_info["guild_id"]
+        channels = self.state.get_guild_channels(guild_id)
+        return web.json_response([c.model_dump() for c in channels])
+
+    async def get_guild_roles(self, request: Request) -> Response:
+        """GET /guilds/{guild_id}/roles - Returns roles in a guild."""
+        guild_id = request.match_info["guild_id"]
+        roles = self.state.get_guild_roles(guild_id)
+        return web.json_response([r.model_dump() for r in roles])
+
+    async def list_guild_members(self, request: Request) -> Response:
+        """GET /guilds/{guild_id}/members - Returns members of a guild."""
+        guild_id = request.match_info["guild_id"]
+        members = self.state.get_guild_members(guild_id)
+        # Return member objects with roles
+        member_list = []
+        for user in members:
+            member = user.model_dump()
+            member["roles"] = user.guild_roles.get(guild_id, [])
+            member["joined_at"] = "2024-01-01T00:00:00.000000+00:00"
+            member["deaf"] = False
+            member["mute"] = False
+            member["pending"] = False
+            member_list.append(member)
+        return web.json_response(member_list)
+
+    # --- Channel Endpoints ---
+
+    async def get_channel(self, request: Request) -> Response:
+        """GET /channels/{channel_id} - Returns a channel."""
+        channel_id = request.match_info["channel_id"]
+        channel = self.state.get_channel(channel_id)
+        if not channel:
+            return web.json_response(
+                RESTError(code=10003, message="Unknown Channel").model_dump(),
+                status=404
+            )
+        return web.json_response(channel.model_dump())
+
+    async def get_channel_messages(self, request: Request) -> Response:
+        """GET /channels/{channel_id}/messages - Returns messages in a channel."""
+        channel_id = request.match_info["channel_id"]
+        limit = int(request.query.get("limit", 50))
+        before = request.query.get("before")
+        after = request.query.get("after")
+        around = request.query.get("around")
+
+        messages = self.state.get_channel_messages(channel_id, limit=limit)
+        return web.json_response([m.model_dump() for m in messages])
+
+    async def create_message(self, request: Request) -> Response:
+        """POST /channels/{channel_id}/messages - Creates a message (with embeds, components)."""
+        channel_id = request.match_info["channel_id"]
+
+        # Handle multipart/form-data (for files) or JSON
+        content_type = request.content_type or ""
+        if "multipart/form-data" in content_type:
+            data = await request.post()
+            # Parse JSON from form fields
+            payload = {}
+            for key, value in data.items():
+                if key == "payload_json":
+                    import json
+                    payload = json.loads(value)
+                else:
+                    payload[key] = value
+        else:
+            payload = await request.json()
+
+        # Create message object
+        from datetime import datetime
+        message = Message(
+            id=str(int(channel_id) + len(self.state.messages) + 1),
+            channel_id=channel_id,
+            author=self.state.get_bot_user() or User(
+                id=self.config.bot_id,
+                username=self.config.bot_username,
+                discriminator=self.config.bot_discriminator,
+                bot=True
+            ),
+            content=payload.get("content", ""),
+            timestamp=datetime.utcnow().isoformat() + "Z",
+            embeds=payload.get("embeds", []),
+            components=payload.get("components", []),
+            flags=payload.get("flags", 0),
+        )
+
+        self.state.add_message(message)
+        logger.info(f"Created message {message.id} in channel {channel_id}")
+
+        return web.json_response(message.model_dump(), status=200)
+
+    async def update_message(self, request: Request) -> Response:
+        """PATCH /channels/{channel_id}/messages/{message_id} - Updates a message."""
+        channel_id = request.match_info["channel_id"]
+        message_id = request.match_info["message_id"]
+
+        payload = await request.json()
+
+        message = self.state.get_message(message_id)
+        if not message or message.channel_id != channel_id:
+            return web.json_response(
+                RESTError(code=10008, message="Unknown Message").model_dump(),
+                status=404
+            )
+
+        # Update fields
+        if "content" in payload:
+            message.content = payload["content"]
+        if "embeds" in payload:
+            message.embeds = payload["embeds"]
+        if "components" in payload:
+            message.components = payload["components"]
+        if "flags" in payload:
+            message.flags = payload["flags"]
+
+        from datetime import datetime
+        message.edited_timestamp = datetime.utcnow().isoformat() + "Z"
+
+        self.state.update_message(message)
+        logger.info(f"Updated message {message_id} in channel {channel_id}")
+
+        return web.json_response(message.model_dump())
+
+    async def delete_message(self, request: Request) -> Response:
+        """DELETE /channels/{channel_id}/messages/{message_id} - Deletes a message."""
+        channel_id = request.match_info["channel_id"]
+        message_id = request.match_info["message_id"]
+
+        message = self.state.get_message(message_id)
+        if not message or message.channel_id != channel_id:
+            return web.json_response(
+                RESTError(code=10008, message="Unknown Message").model_dump(),
+                status=404
+            )
+
+        self.state.delete_message(message_id)
+        logger.info(f"Deleted message {message_id} from channel {channel_id}")
+
+        return web.Response(status=204)
+
+    # --- Interaction Endpoints ---
+
+    async def interaction_callback(self, request: Request) -> Response:
+        """POST /interactions/{interaction_id}/{interaction_token}/callback - Responds to an interaction."""
+        interaction_id = request.match_info["interaction_id"]
+        interaction_token = request.match_info["interaction_token"]
+
+        payload = await request.json()
+        response_type = payload.get("type", InteractionCallbackType.CHANNEL_MESSAGE_WITH_SOURCE)
+
+        interaction = self.state.get_interaction(interaction_id)
+        if not interaction or interaction.token != interaction_token:
+            return web.json_response(
+                RESTError(code=10062, message="Unknown interaction").model_dump(),
+                status=404
+            )
+
+        # Mark interaction as responded
+        interaction.responded = True
+
+        # Store the response for the test framework
+        interaction.response = InteractionResponse(type=response_type, data=payload.get("data"))
+
+        logger.info(f"Interaction {interaction_id} responded with type {response_type}")
+
+        return web.json_response({})
+
+    # --- Webhook Endpoints (for components) ---
+
+    async def execute_webhook(self, request: Request) -> Response:
+        """POST /webhooks/{webhook_id}/{webhook_token} - Executes a webhook (used for components)."""
+        webhook_id = request.match_info["webhook_id"]
+        webhook_token = request.match_info["webhook_token"]
+
+        payload = await request.json()
+
+        # This is used for responding to component interactions (buttons, selects)
+        # Create a followup message
+        from datetime import datetime
+        message = Message(
+            id=str(int(webhook_id) + len(self.state.messages) + 1),
+            channel_id=payload.get("channel_id", "0"),
+            author=self.state.get_bot_user() or User(
+                id=self.config.bot_id,
+                username=self.config.bot_username,
+                discriminator=self.config.bot_discriminator,
+                bot=True
+            ),
+            content=payload.get("content", ""),
+            timestamp=datetime.utcnow().isoformat() + "Z",
+            embeds=payload.get("embeds", []),
+            components=payload.get("components", []),
+            flags=payload.get("flags", 0),
+        )
+
+        self.state.add_message(message)
+        logger.info(f"Webhook executed, created message {message.id}")
+
+        return web.json_response(message.model_dump())
+
+    # --- Server Lifecycle ---
+
+    async def start(self) -> None:
+        """Start the REST server."""
+        self.runner = web.AppRunner(self.app)
+        await self.runner.setup()
+        self.site = web.TCPSite(self.runner, self.config.host, self.config.rest_port)
+        await self.site.start()
+        logger.info(f"REST server started on http://{self.config.host}:{self.config.rest_port}")
+
+    async def stop(self) -> None:
+        """Stop the REST server."""
+        if self.site:
+            await self.site.stop()
+        if self.runner:
+            await self.runner.cleanup()
+        logger.info("REST server stopped")

src/apicord/state/__init__.py

@@ -0,0 +1 @@
+"""State Management Package"""

src/apicord/state/manager.py

@@ -0,0 +1,355 @@
+"""
+State Management Module
+
+Central state management for the emulator, handling guilds, channels, users, messages, and interactions.
+"""
+
+import json
+import logging
+from pathlib import Path
+from typing import Any, Dict, List, Optional
+
+from apicord.config import EmulatorConfig
+from apicord.models import (
+    Guild,
+    Channel,
+    User,
+    Role,
+    Message,
+    Interaction,
+    BotUser,
+    ScenarioData,
+)
+
+logger = logging.getLogger("apicord")
+
+
+class StateManager:
+    """Manages the emulator's state including guilds, channels, users, and messages."""
+
+    def __init__(self, config: EmulatorConfig) -> None:
+        self.config = config
+        self.guilds: Dict[str, Guild] = {}
+        self.channels: Dict[str, Channel] = {}
+        self.users: Dict[str, User] = {}
+        self.roles: Dict[str, Role] = {}
+        self.messages: Dict[str, Message] = {}
+        self.interactions: Dict[str, Interaction] = {}
+        self.bot_user: Optional[BotUser] = None
+
+        # Initialize bot user
+        self._init_bot_user()
+
+    def _init_bot_user(self) -> None:
+        """Initialize the bot user."""
+        self.bot_user = BotUser(
+            id=self.config.bot_id,
+            username=self.config.bot_username,
+            discriminator=self.config.bot_discriminator,
+            bot=True,
+        )
+        self.users[self.config.bot_id] = self.bot_user
+        logger.debug(f"Initialized bot user: {self.bot_user.username}#{self.bot_user.discriminator} ({self.bot_user.id})")
+
+    async def create_default_state(
+        self,
+        guilds: int = 1,
+        channels_per_guild: int = 3,
+        users: int = 5,
+    ) -> None:
+        """Create a default test state with guilds, channels, and users."""
+        logger.info(f"Creating default state: {guilds} guilds, {channels_per_guild} channels/guild, {users} users")
+
+        # Create guilds
+        for i in range(guilds):
+            guild_id = str(100000000000000000 + i * 1000)
+            guild = Guild(
+                id=guild_id,
+                name=f"Test Guild {i + 1}",
+                icon=None,
+                owner_id="111111111111111111",
+                roles=[],
+            )
+            self.guilds[guild_id] = guild
+
+            # Create default role @everyone
+            everyone_role = Role(
+                id=f"{guild_id}0",
+                name="@everyone",
+                color=0,
+                hoist=False,
+                position=0,
+                permissions="104324161",  # Basic permissions
+                managed=False,
+                mentionable=False,
+            )
+            self.roles[everyone_role.id] = everyone_role
+            guild.roles.append(everyone_role.id)
+
+            # Create "Game Server User" role
+            gsu_role = Role(
+                id=f"{guild_id}1",
+                name="Game Server User",
+                color=3447003,  # Blue
+                hoist=True,
+                position=1,
+                permissions="104324161",
+                managed=False,
+                mentionable=True,
+            )
+            self.roles[gsu_role.id] = gsu_role
+            guild.roles.append(gsu_role.id)
+
+            # Create channels
+            channel_types = [
+                ("general", 0),  # GUILD_TEXT
+                ("bot-commands", 0),
+                ("voice-chat", 2),  # GUILD_VOICE
+            ]
+            for j in range(min(channels_per_guild, len(channel_types))):
+                channel_name, channel_type = channel_types[j]
+                channel_id = f"{guild_id}{j + 10}"
+                channel = Channel(
+                    id=channel_id,
+                    guild_id=guild_id,
+                    name=channel_name,
+                    type=channel_type,
+                    position=j,
+                )
+                self.channels[channel_id] = channel
+                guild.channels.append(channel_id)
+
+        # Create test users
+        for i in range(users):
+            user_id = str(200000000000000000 + i * 1000)
+            user = User(
+                id=user_id,
+                username=f"TestUser{i + 1}",
+                discriminator=f"{1000 + i}",
+                bot=False,
+            )
+            self.users[user_id] = user
+
+            # Add first user to first guild with Game Server User role
+            if i == 0 and guilds > 0:
+                first_guild_id = list(self.guilds.keys())[0]
+                gsu_role_id = f"{first_guild_id}1"
+                if gsu_role_id in self.roles:
+                    # Add role to user in that guild
+                    if first_guild_id not in user.guild_roles:
+                        user.guild_roles[first_guild_id] = []
+                    user.guild_roles[first_guild_id].append(gsu_role_id)
+
+        logger.info(f"Created {len(self.guilds)} guilds, {len(self.channels)} channels, {len(self.users)} users")
+
+    async def load_scenario(self, scenario_data: dict) -> None:
+        """Load state from a scenario definition."""
+        logger.info("Loading scenario state")
+
+        # Parse scenario using Pydantic model
+        scenario = ScenarioData(**scenario_data)
+
+        # Clear existing state
+        self.guilds.clear()
+        self.channels.clear()
+        self.users.clear()
+        self.roles.clear()
+        self.messages.clear()
+        self.interactions.clear()
+
+        # Re-initialize bot user
+        self._init_bot_user()
+
+        # Load guilds
+        for guild_data in scenario.guilds:
+            guild = Guild(**guild_data.model_dump())
+            self.guilds[guild.id] = guild
+
+        # Load channels
+        for channel_data in scenario.channels:
+            channel = Channel(**channel_data.model_dump())
+            self.channels[channel.id] = channel
+            # Add to guild's channel list
+            if channel.guild_id in self.guilds:
+                self.guilds[channel.guild_id].channels.append(channel.id)
+
+        # Load roles
+        for role_data in scenario.roles:
+            role = Role(**role_data.model_dump())
+            self.roles[role.id] = role
+            if role.guild_id in self.guilds:
+                self.guilds[role.guild_id].roles.append(role.id)
+
+        # Load users
+        for user_data in scenario.users:
+            user = User(**user_data.model_dump())
+            self.users[user.id] = user
+
+        # Load bot if specified
+        if scenario.bot:
+            self.bot_user = BotUser(**scenario.bot.model_dump())
+            self.users[self.bot_user.id] = self.bot_user
+            # Update config token if provided
+            if scenario.bot.token:
+                self.config.bot_token = scenario.bot.token
+
+        logger.info(f"Loaded scenario: {len(self.guilds)} guilds, {len(self.channels)} channels, {len(self.users)} users")
+
+    async def save_state(self) -> None:
+        """Save current state to disk."""
+        if not self.config.persist_state:
+            return
+
+        state = {
+            "guilds": {k: v.model_dump() for k, v in self.guilds.items()},
+            "channels": {k: v.model_dump() for k, v in self.channels.items()},
+            "users": {k: v.model_dump() for k, v in self.users.items()},
+            "roles": {k: v.model_dump() for k, v in self.roles.items()},
+            "messages": {k: v.model_dump() for k, v in self.messages.items()},
+            "interactions": {k: v.model_dump() for k, v in self.interactions.items()},
+            "bot_user": self.bot_user.model_dump() if self.bot_user else None,
+        }
+
+        try:
+            with open(self.config.state_file, "w") as f:
+                json.dump(state, f, indent=2)
+            logger.debug(f"State saved to {self.config.state_file}")
+        except Exception as e:
+            logger.error(f"Failed to save state: {e}")
+
+    async def load_state(self) -> bool:
+        """Load state from disk. Returns True if successful."""
+        if not self.config.persist_state:
+            return False
+
+        state_file = Path(self.config.state_file)
+        if not state_file.exists():
+            return False
+
+        try:
+            with open(state_file) as f:
+                state = json.load(f)
+
+            self.guilds = {k: Guild(**v) for k, v in state.get("guilds", {}).items()}
+            self.channels = {k: Channel(**v) for k, v in state.get("channels", {}).items()}
+            self.users = {k: User(**v) for k, v in state.get("users", {}).items()}
+            self.roles = {k: Role(**v) for k, v in state.get("roles", {}).items()}
+            self.messages = {k: Message(**v) for k, v in state.get("messages", {}).items()}
+            self.interactions = {k: Interaction(**v) for k, v in state.get("interactions", {}).items()}
+
+            if state.get("bot_user"):
+                self.bot_user = BotUser(**state["bot_user"])
+                self.users[self.bot_user.id] = self.bot_user
+
+            logger.info(f"Loaded state from {state_file}")
+            return True
+        except Exception as e:
+            logger.error(f"Failed to load state: {e}")
+            return False
+
+    # --- Getters ---
+
+    def get_guild(self, guild_id: str) -> Optional[Guild]:
+        return self.guilds.get(guild_id)
+
+    def get_channel(self, channel_id: str) -> Optional[Channel]:
+        return self.channels.get(channel_id)
+
+    def get_user(self, user_id: str) -> Optional[User]:
+        return self.users.get(user_id)
+
+    def get_role(self, role_id: str) -> Optional[Role]:
+        return self.roles.get(role_id)
+
+    def get_message(self, message_id: str) -> Optional[Message]:
+        return self.messages.get(message_id)
+
+    def get_interaction(self, interaction_id: str) -> Optional[Interaction]:
+        return self.interactions.get(interaction_id)
+
+    def get_bot_user(self) -> Optional[BotUser]:
+        return self.bot_user
+
+    # --- Guild operations ---
+
+    def list_guilds(self) -> List[Guild]:
+        return list(self.guilds.values())
+
+    def get_guild_channels(self, guild_id: str) -> List[Channel]:
+        guild = self.guilds.get(guild_id)
+        if not guild:
+            return []
+        return [self.channels[cid] for cid in guild.channels if cid in self.channels]
+
+    def get_guild_roles(self, guild_id: str) -> List[Role]:
+        guild = self.guilds.get(guild_id)
+        if not guild:
+            return []
+        return [self.roles[rid] for rid in guild.roles if rid in self.roles]
+
+    def get_guild_members(self, guild_id: str) -> List[User]:
+        """Get users who have roles in this guild."""
+        members = []
+        for user in self.users.values():
+            if guild_id in user.guild_roles:
+                members.append(user)
+        return members
+
+    # --- Channel operations ---
+
+    def get_channel_messages(self, channel_id: str, limit: int = 50) -> List[Message]:
+        channel = self.channels.get(channel_id)
+        if not channel:
+            return []
+        msg_ids = channel.message_ids[-limit:]
+        return [self.messages[mid] for mid in msg_ids if mid in self.messages]
+
+    # --- Message operations ---
+
+    def add_message(self, message: Message) -> None:
+        self.messages[message.id] = message
+        # Add to channel's message list
+        if message.channel_id in self.channels:
+            channel = self.channels[message.channel_id]
+            channel.message_ids.append(message.id)
+
+    def update_message(self, message: Message) -> bool:
+        if message.id in self.messages:
+            self.messages[message.id] = message
+            return True
+        return False
+
+    def delete_message(self, message_id: str) -> bool:
+        if message_id in self.messages:
+            message = self.messages[message_id]
+            # Remove from channel
+            if message.channel_id in self.channels:
+                channel = self.channels[message.channel_id]
+                if message_id in channel.message_ids:
+                    channel.message_ids.remove(message_id)
+            del self.messages[message_id]
+            return True
+        return False
+
+    # --- Interaction operations ---
+
+    def add_interaction(self, interaction: Interaction) -> None:
+        self.interactions[interaction.id] = interaction
+
+    def get_pending_interactions(self, user_id: str) -> List[Interaction]:
+        return [
+            i for i in self.interactions.values()
+            if i.user_id == user_id and not i.responded
+        ]
+
+    # --- Utility ---
+
+    def get_state_summary(self) -> dict:
+        return {
+            "guilds": len(self.guilds),
+            "channels": len(self.channels),
+            "users": len(self.users),
+            "roles": len(self.roles),
+            "messages": len(self.messages),
+            "interactions": len(self.interactions),
+        }

tests/test_models.py

@@ -0,0 +1,144 @@
+"""Tests for Pydantic Models"""
+
+import pytest
+from apicord.models.discord import (
+    User,
+    BotUser,
+    Role,
+    Channel,
+    ChannelType,
+    Guild,
+    Message,
+    Interaction,
+    InteractionType,
+    Snowflake,
+)
+
+
+class TestSnowflake:
+    def test_snowflake_from_string(self):
+        sf = Snowflake("123456789012345678")
+        assert sf == "123456789012345678"
+
+    def test_snowflake_from_int(self):
+        sf = Snowflake(123456789012345678)
+        assert sf == "123456789012345678"
+
+    def test_snowflake_invalid(self):
+        with pytest.raises(ValueError):
+            Snowflake.validate("invalid", None)
+
+
+class TestUser:
+    def test_user_creation(self):
+        user = User(
+            id="123456789012345678",
+            username="TestUser",
+            discriminator="1234",
+            bot=False,
+        )
+        assert user.id == "123456789012345678"
+        assert user.username == "TestUser"
+        assert user.discriminator == "1234"
+        assert user.bot is False
+
+    def test_user_with_guild_roles(self):
+        user = User(
+            id="123456789012345678",
+            username="TestUser",
+            discriminator="1234",
+            guild_roles={"111111111111111111": ["222222222222222222"]},
+        )
+        assert "111111111111111111" in user.guild_roles
+        assert "222222222222222222" in user.guild_roles["111111111111111111"]
+
+
+class TestBotUser:
+    def test_bot_user_creation(self):
+        bot = BotUser(
+            id="444444444444444444",
+            username="TestBot",
+            discriminator="0000",
+            token="test_token_123",
+        )
+        assert bot.id == "444444444444444444"
+        assert bot.bot is True
+        assert bot.token == "test_token_123"
+
+
+class TestRole:
+    def test_role_creation(self):
+        role = Role(
+            id="222222222222222222",
+            name="Game Server User",
+            color=3447003,
+            permissions="104324161",
+        )
+        assert role.name == "Game Server User"
+        assert role.color == 3447003
+
+
+class TestChannel:
+    def test_text_channel(self):
+        channel = Channel(
+            id="111111111111111111",
+            type=ChannelType.GUILD_TEXT,
+            guild_id="123456789012345678",
+            name="general",
+        )
+        assert channel.type == ChannelType.GUILD_TEXT
+        assert channel.guild_id == "123456789012345678"
+        assert channel.name == "general"
+
+    def test_voice_channel(self):
+        channel = Channel(
+            id="111111111111111112",
+            type=ChannelType.GUILD_VOICE,
+            guild_id="123456789012345678",
+            name="voice-chat",
+        )
+        assert channel.type == ChannelType.GUILD_VOICE
+
+
+class TestGuild:
+    def test_guild_creation(self):
+        guild = Guild(
+            id="123456789012345678",
+            name="Test Guild",
+            owner_id="111111111111111111",
+        )
+        assert guild.name == "Test Guild"
+        assert guild.owner_id == "111111111111111111"
+        assert guild.roles == []
+        assert guild.channels == []
+
+
+class TestMessage:
+    def test_message_creation(self):
+        user = User(
+            id="123456789012345678",
+            username="TestUser",
+            discriminator="1234",
+        )
+        message = Message(
+            id="999999999999999999",
+            channel_id="111111111111111111",
+            author=user,
+            content="Hello, world!",
+            timestamp="2024-01-01T00:00:00.000000+00:00",
+        )
+        assert message.content == "Hello, world!"
+        assert message.author.username == "TestUser"
+
+
+class TestInteraction:
+    def test_interaction_creation(self):
+        interaction = Interaction(
+            id="888888888888888888",
+            type=InteractionType.APPLICATION_COMMAND,
+            application_id="444444444444444444",
+            token="interaction_token_123",
+        )
+        assert interaction.type == InteractionType.APPLICATION_COMMAND
+        assert interaction.token == "interaction_token_123"
+        assert interaction.responded is False

tests/test_state_manager.py

@@ -0,0 +1,83 @@
+"""Tests for State Manager"""
+
+import pytest
+from apicord.config import EmulatorConfig
+from apicord.state.manager import StateManager
+from apicord.models.discord import User, Role, Channel, ChannelType, Guild
+
+
+class TestStateManager:
+    @pytest.fixture
+    def config(self):
+        return EmulatorConfig(
+            bot_token="test_token_123",
+            bot_id="444444444444444444",
+            persist_state=False,
+        )
+
+    @pytest.fixture
+    async def state_manager(self, config):
+        manager = StateManager(config)
+        await manager.create_default_state(guilds=1, channels_per_guild=2, users=3)
+        return manager
+
+    @pytest.mark.asyncio
+    async def test_create_default_state(self, state_manager):
+        assert len(state_manager.guilds) == 1
+        assert len(state_manager.channels) == 2
+        assert len(state_manager.users) == 4  # 3 test users + bot
+
+    @pytest.mark.asyncio
+    async def test_bot_user_created(self, state_manager):
+        bot = state_manager.get_bot_user()
+        assert bot is not None
+        assert bot.id == "444444444444444444"
+        assert bot.username == "TestBot"
+        assert bot.bot is True
+
+    @pytest.mark.asyncio
+    async def test_get_guild(self, state_manager):
+        guild = state_manager.get_guild(list(state_manager.guilds.keys())[0])
+        assert guild is not None
+        assert isinstance(guild, Guild)
+
+    @pytest.mark.asyncio
+    async def test_get_channel(self, state_manager):
+        channel = state_manager.get_channel(list(state_manager.channels.keys())[0])
+        assert channel is not None
+        assert isinstance(channel, Channel)
+
+    @pytest.mark.asyncio
+    async def test_get_user(self, state_manager):
+        user = state_manager.get_user(list(state_manager.users.keys())[0])
+        assert user is not None
+        assert isinstance(user, User)
+
+    @pytest.mark.asyncio
+    async def test_add_message(self, state_manager):
+        from apicord.models.discord import Message
+        from datetime import datetime
+
+        channel_id = list(state_manager.channels.keys())[0]
+        message = Message(
+            id="999999999999999999",
+            channel_id=channel_id,
+            author=state_manager.get_bot_user(),
+            content="Test message",
+            timestamp=datetime.utcnow().isoformat() + "Z",
+        )
+        state_manager.add_message(message)
+
+        retrieved = state_manager.get_message(message.id)
+        assert retrieved is not None
+        assert retrieved.content == "Test message"
+
+    @pytest.mark.asyncio
+    async def test_state_summary(self, state_manager):
+        summary = state_manager.get_state_summary()
+        assert "guilds" in summary
+        assert "channels" in summary
+        assert "users" in summary
+        assert summary["guilds"] == 1
+        assert summary["channels"] == 2
+        assert summary["users"] == 4  # 3 + bot