Update "Architecture"
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# Architecture
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## Overview
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Pterodisbot is a modular, asynchronous Discord bot built with Python 3.8+ using the `discord.py` library. It follows a clean architecture pattern with clear separation of concerns across multiple modules.
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## System Architecture
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```
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┌─────────────────────────────────────────────────────────────────┐
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│ Discord Client │
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│ ┌─────────────┐ ┌─────────────┐ ┌─────────────────────────┐ │
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│ │ Slash Cmds │ │ Buttons │ │ Dropdown Menus │ │
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│ └──────┬──────┘ └──────┬──────┘ └───────────┬─────────────┘ │
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└─────────┼────────────────┼──────────────────────┼────────────────┘
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│ │ │
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▼ ▼ ▼
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┌─────────────────────────────────────────────────────────────────┐
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│ PterodactylBot (commands.Bot) │
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│ ┌───────────────────────────────────────────────────────────┐ │
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│ │ Background Task: update_status (10s interval) │ │
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│ │ • Smart update detection (state changes, CPU, uptime) │ │
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│ │ • Rate limit protection │ │
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│ └───────────────────────────────────────────────────────────┘ │
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└─────────────────────────────┬───────────────────────────────────┘
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│
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┌─────────────────────┼─────────────────────┐
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▼ ▼ ▼
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┌───────────────┐ ┌───────────────┐ ┌───────────────┐
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│ EmbedManager │ │ PanelAPI │ │MetricsManager │
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│ │ │ │ │ │
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│ • Create │ │ • Client API │ │ • Data points │
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│ • Update │ │ • App API │ │ • Graphs │
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│ • Track │ │ • Auth │ │ • Trends │
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│ • Persist │ │ • Rate limit │ │ │
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└───────┬───────┘ └───────┬───────┘ └───────┬───────┘
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│ │ │
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▼ ▼ ▼
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┌───────────────┐ ┌───────────────┐ ┌───────────────┐
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│ JSON Storage │ │Pterodactyl/Pelican│ │ Matplotlib │
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│(embed_locs) │ │ Panel API │ │ (PNG graphs) │
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└───────────────┘ └───────────────┘ └───────────────┘
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```
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## Module Structure
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| Module | Responsibility | Key Classes |
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|--------|---------------|-------------|
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| `main.py` | Entry point, logging setup | `main()` |
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| `config.py` | Configuration loading/validation | `Config`, `load_config()` |
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| `bot.py` | Core bot, commands, background tasks | `PterodactylBot`, `setup_commands()` |
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| `api.py` | Pterodactyl/Pelican Panel API client | `PanelAPI` |
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| `embeds.py` | Embed creation, tracking, persistence | `EmbedManager` |
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| `views.py` | Discord UI components (buttons, dropdowns) | `ServerStatusView`, `ServerDropdown` |
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| `metrics.py` | Metrics collection & graph generation | `ServerMetricsManager`, `ServerMetricsGraphs` |
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| `models.py` | Pydantic data models | `ServerData`, `ServerResources`, etc. |
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| `exceptions.py` | Custom exception hierarchy | `APIError`, `ConfigValidationError`, etc. |
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| `logging_config.py` | Logging configuration | `setup_logging()` |
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| `generate_config.py` | Config generation from env vars | `generate_config_from_env()` |
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## Data Flow
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### 1. Bot Startup
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```
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main() → load_config() → PterodactylBot() → setup_commands() → bot.start()
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↓
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setup_hook() → api.initialize()
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↓
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embed_manager.load_locations()
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↓
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update_status.start()
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```
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### 2. Status Update Cycle (Every 10s)
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```
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update_status() → api.get_servers() → For each tracked embed:
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→ api.get_server_resources()
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→ metrics_manager.add_server_data() (if running)
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→ Smart update detection:
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• Power state changed? → UPDATE
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• CPU change >50%? → UPDATE
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• First time seeing server? → UPDATE
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• Running >10min? → UPDATE (uptime accuracy)
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→ embed_manager.update_single_embed()
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→ metrics_manager.generate_combined_graph()
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→ Discord message.edit()
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```
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### 3. User Interaction Flow
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```
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/server_status command
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→ api.get_servers()
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→ Create stats embed + dropdown
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→ User selects server
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→ api.get_server_resources()
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→ Delete old embed (if exists)
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→ embed_manager.create_server_embed()
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→ Send new embed with ServerStatusView
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→ embed_manager.track_embed()
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Button press (Start/Stop/Restart/Show Address)
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→ ServerStatusView.interaction_check() (guild + role)
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→ api.send_power_action() or api.get_server_default_allocation()
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→ Ephemeral response to user
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```
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## Concurrency Model
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- **Async/await** throughout for non-blocking I/O
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- **asyncio.Lock** in `PanelAPI._request()` for rate limit protection
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- **asyncio.Lock** in `PterodactylBot.update_status` for update cycle serialization
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- **deque(maxlen=6)** for automatic metrics rotation (1 min history)
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- **Background task** with `@tasks.loop(seconds=10)` for periodic updates
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## Persistence
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- **Embed locations**: JSON file (`embed/embed_locations.json`)
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- **Metrics**: In-memory only (last 6 data points = 1 minute)
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- **Configuration**: INI file (`config.ini`) or environment variables
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- **Logs**: Rotating files (5MB, 3 backups) in `logs/`
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## Security Architecture
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```
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┌────────────────────────────────────────────────────────────┐
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│ Access Control Layers │
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├────────────────────────────────────────────────────────────┤
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│ 1. Guild Restriction (config.allowed_guild_id) │
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│ └─ Checked in: on_interaction, check_allowed_guild, │
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│ ServerStatusView.interaction_check │
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├────────────────────────────────────────────────────────────┤
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│ 2. Role-Based Access ("Game Server User" role) │
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│ └─ Checked in: ServerStatusView.interaction_check │
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├────────────────────────────────────────────────────────────┤
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│ 3. Admin Permissions (Discord Administrator) │
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│ └─ Required for: /refresh_embeds, /purge_embeds │
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└────────────────────────────────────────────────────────────┘
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```
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## API Integration
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### Dual API Key System
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- **Client API Key** (`ptlc_` / `pacc_`): Server operations (power, resources)
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- **Application API Key** (`ptla_` / `papp_`): Admin operations (list servers, details)
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### Supported Panels
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- **Pterodactyl Panel** (standard)
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- **Pelican Panel** (fork, uses `pacc_`/`papp_` prefixes)
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- Auto-detected via `Config.is_pelican_panel` property
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## Error Handling Strategy
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1. **Validation at startup** - Config validation fails fast
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2. **Graceful degradation** - Failed embed updates don't crash the bot
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3. **Structured exceptions** - Custom exception types for different failure modes
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4. **Comprehensive logging** - DEBUG for operations, ERROR for failures
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5. **Automatic cleanup** - Missing embeds removed from tracking
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## Deployment Architectures
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### Traditional
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```
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Python 3.8+ → pip install -r requirements.txt → python main.py
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```
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### Docker
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```
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Dockerfile → docker build → docker run -v config:/app
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```
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### Kubernetes
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```
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Deployment + Secret + PVC → kubectl apply
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```
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## Related Pages
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- [Features](/Features) - Detailed feature breakdown
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- [Installation](/Installation) - Deployment guides
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- [Configuration](/Configuration) - Config options
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- [Usage](/Usage) - Commands and workflows
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- [Contributing](/Contributing) - Development guidelines
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