# Configuration Guide

Complete reference for configuring RedditBot.

---

## Table of Contents

1. [Configuration Overview](#configuration-overview)
2. [Configuration Files](#configuration-files)
3. [Environment Variables](#environment-variables)
4. [config.yaml Reference](#configyaml-reference)
5. [Runtime Configuration](#runtime-configuration)
6. [Configuration Validation](#configuration-validation)
7. [Troubleshooting](#troubleshooting)

---

## Configuration Overview

RedditBot uses a layered configuration approach:

```
┌──────────────────────────────────────────────────────────────┐
│                    Priority Order (High → Low)                │
├──────────────────────────────────────────────────────────────┤
│ 1. Environment Variables                                     │
│    (OPENROUTER_API_KEY, REDDIT_USERNAME, etc.)               │
│                                                              │
│ 2. config.yaml                                               │
│    (Primary configuration file)                              │
│                                                              │
│ 3. Defaults                                                  │
│    (Hardcoded defaults in code)                              │
└──────────────────────────────────────────────────────────────┘
```

Configuration is loaded at startup by `loadConfig()` in `src/config/index.ts`, which:

1. Reads `config.yaml` from the project root
2. Merges environment variable overrides
3. Validates the entire configuration tree using Zod
4. Returns a strongly-typed `Config` object

---

## Configuration Files

### config.yaml

The primary configuration file, located at the project root:

```
RedditBot/
├── config.yaml          # ← Main configuration
├── package.json
├── tsconfig.json
└── src/
```

### Data Directory

Runtime data is stored in `data/` (created automatically):

```
data/
├── reddit-bot.db        # SQLite database
├── browser/             # Browser session data (cookies, storage)
├── media/               # Downloaded media files
│   ├── index.json       # Media index (SHA-1 → filename)
│   ├── abc123.jpg       # Media file 1
│   └── def456.png       # Media file 2
└── chats/               # Cached conversation JSON files
    ├── chat_abc123.json
    └── chat_def456.json
```

---

## Environment Variables

Environment variables override corresponding values in `config.yaml`.

| Variable | Required | Type | Description | Example |
|---|---|---|---|---|
| `OPENROUTER_API_KEY` | Yes | string | OpenRouter API key for AI services | `sk-or-v1-abc123...` |
| `REDDIT_USERNAME` | Yes | string | Reddit username for authentication | `MyBotUser` |
| `REDDIT_PASSWORD` | Yes | string | Reddit password for authentication | `secret123` |
| `BROWSER_HEADLESS` | No | boolean | Run browser in headless mode | `true` or `false` |

### Setting Environment Variables

**Option 1: `.env` file** (recommended for development)

Create a `.env` file in the project root:

```env
OPENROUTER_API_KEY=sk-or-v1-abc123...
REDDIT_USERNAME=MyBotUser
REDDIT_PASSWORD=secret123
BROWSER_HEADLESS=true
```

> **Note**: Add `.env` to `.gitignore` - never commit credentials.

**Option 2: Shell export**

```bash
export OPENROUTER_API_KEY=sk-or-v1-abc123...
export REDDIT_USERNAME=MyBotUser
export REDDIT_PASSWORD=secret123
```

**Option 3: Docker**

Pass via `docker-compose.yml` or Docker CLI:

```yaml
environment:
  - OPENROUTER_API_KEY=sk-or-v1-abc123...
  - REDDIT_USERNAME=MyBotUser
  - REDDIT_PASSWORD=secret123
```

---

## config.yaml Reference

Complete reference for every configuration option.

### Reddit Settings

```yaml
reddit:
  # Subreddits to monitor for new posts
  subreddits:
    - gonewild
    - ratemyboobs
    - HomemadeNsfw
    - realgirls
    - plussize_gonewild
    # ... add or remove subreddits

  # Minutes between polling cycles
  pollInterval: 15

  # Target gender for image analysis filtering
  # Options: "F" (female), "M" (male)
  targetGender: "F"

  # Keywords used to detect sellers/spam profiles
  # Posts from users matching these keywords are skipped
  sellerKeywords:
    - seller
    - onlyfans
    - link in bio
    - check my profile
    - promo
    - discount
    - affiliate
```

### OpenRouter AI Settings

```yaml
openrouter:
  # OpenRouter API key (can also be set via OPENROUTER_API_KEY env var)
  apiKey: "sk-or-v1-abc123..."

  # Primary AI model for image analysis
  # Models must be available on OpenRouter
  model: "meta-llama/llama-3.2-90b-vision-preview"

  # Fallback models tried if the primary model refuses or fails
  fallbackModels:
    - "google/gemini-2.0-flash-001"
    - "meta-llama/llama-3.2-11b-vision-instruct"

  # Quick detection model (cheaper/faster, used for gender pre-filter)
  quickModel: "google/gemini-2.0-flash-lite-001"

  # System prompt for image analysis
  # The AI will describe the image and detect gender
  systemPrompt: |
    Analyze this image and provide:
    1. Gender detected (F or M)
    2. Detailed description of the image content
    3. Notable features (hair color, clothing, setting, etc.)
    
    Return as JSON: {"gender": "F", "description": "...", "features": [...]}

  # System prompt for message generation
  # Used when crafting DMs to post authors
  messagePrompt: |
    Generate a natural, friendly DM for this Reddit post.
    
    Image analysis: {description}
    Post title: {title}
    Strategy: {strategy}
    
    Guidelines:
    - Be complimentary but not creepy
    - Reference something specific from the image
    - Keep it under 2 sentences
    - Sound like a genuine person, not a bot
    - Do NOT ask for anything in return
```

### Rate Limiting

```yaml
rateLimit:
  # Minimum delay between messages (milliseconds)
  # Higher values reduce detection risk
  minDelayMs: 30000

  # Maximum messages per hour
  # Bot will pause when this limit is reached
  maxMessagesPerHour: 20

  # Random jitter added to delay (milliseconds)
  # Adds unpredictability to timing
  jitterMs: 15000
```

**Timing example with defaults:**
```
Minimum delay: 30,000ms (30 seconds)
Jitter: 0 to 15,000ms (0-15 seconds)
Effective delay: 30-45 seconds between messages
Max messages: 20 per hour
```

### Browser Settings

```yaml
browser:
  # Run browser in headless mode (no UI)
  # Set to false for debugging
  headless: true

  # Directory for persistent browser data
  # Cookies and session storage are saved here
  userDataDir: "./data/browser"
```

**Browser session persistence:**

```
data/browser/
├── Default/
│   ├── Cookies           # Reddit session cookies
│   ├── Local Storage     # Local storage data
│   └── Preferences       # Browser preferences
├── Login Data            # Saved login info
└── Preferences           # Browser state
```

> **Important**: Keep this directory intact. Deleting it requires re-login.

### Database Settings

```yaml
database:
  # Path to SQLite database file
  path: "./data/reddit-bot.db"
```

The database is auto-created on first run. Migrations run automatically on startup.

### Media Sync Settings

```yaml
mediaSync:
  # Enable periodic media synchronization
  enabled: true

  # Interval between sync cycles (minutes)
  intervalMinutes: 30
```

**Sync behavior:**
- **Incremental sync** (automatic): Downloads media from top 10 conversations
- **Full sync** (manual via dashboard): Downloads media from all conversations

### Auto-Reply Settings

```yaml
autoReply:
  # Enable automatic chat replies
  enabled: true

  # Auto-send replies (true) or mark as pending for approval (false)
  autoSend: false

  # Minutes between checking for new messages
  checkInterval: 10
```

**Reply modes:**

| autoSend | Behavior |
|---|---|
| `true` | Bot sends AI-generated replies automatically |
| `false` | Bot suggests replies, user approves via dashboard |

### Strategy Variants (A/B Testing)

```yaml
strategyVariants:
  # Variant 1: Compliment-based
  - name: "compliment"
    prompt: |
      Write a friendly compliment about the person's appearance.
      Be genuine and specific. Keep it short and natural.
    enabled: true

  # Variant 2: Question-based
  - name: "question"
    prompt: |
      Write a friendly message that includes a question.
      Engage them in conversation naturally.
    enabled: true

  # Variant 3: Casual observation
  - name: "observation"
    prompt: |
      Write a casual observation about the photo or setting.
      Sound like you're commenting to a friend.
    enabled: true
```

### Web Dashboard Settings

```yaml
web:
  # Port for the web dashboard
  port: 3000
```

### Global Settings

```yaml
# Global dry run mode
# When true, all actions are logged but not actually performed
dryRun: false

# Number of successful message examples to include in prompts
fewShotExamples: 3

# Minimum responses needed before trusting strategy stats
minStrategySamples: 10

# Exploration rate for A/B testing (0.0 to 1.0)
# 0.15 = 15% of messages use random variants (exploration)
explorationRate: 0.15
```

---

## Runtime Configuration

The following settings can be modified via the web dashboard without restarting the bot:

| Setting | Endpoint | Type | Description |
|---|---|---|---|
| `rateLimit.minDelayMs` | `PUT /api/config` | number | Message delay |
| `rateLimit.maxMessagesPerHour` | `PUT /api/config` | number | Hourly cap |
| `rateLimit.jitterMs` | `PUT /api/config` | number | Jitter range |
| `reddit.pollInterval` | `PUT /api/config` | number | Poll frequency |
| `dryRun` | `PUT /api/config` | boolean | Dry run mode |

### Updating Runtime Config

Via dashboard:
1. Open the settings modal
2. Modify desired values
3. Click "Save"

Via API:
```bash
curl -X PUT http://localhost:3000/api/config \
  -H "Content-Type: application/json" \
  -d '{
    "rateLimit": {
      "minDelayMs": 45000,
      "maxMessagesPerHour": 15,
      "jitterMs": 20000
    },
    "dryRun": true
  }'
```

> **Note**: Runtime changes are in-memory only. They are lost when the bot restarts. To make changes persistent, update `config.yaml`.

---

## Configuration Validation

All configuration is validated using Zod at startup. Invalid configuration will cause the bot to exit with a descriptive error.

### Validation Rules

| Field | Validation |
|---|---|
| `reddit.subreddits` | Must be non-empty array of strings |
| `reddit.pollInterval` | Must be positive integer |
| `reddit.targetGender` | Must be "F" or "M" |
| `openrouter.apiKey` | Must be non-empty string |
| `openrouter.model` | Must be non-empty string |
| `openrouter.fallbackModels` | Must be non-empty array |
| `rateLimit.minDelayMs` | Must be positive integer |
| `rateLimit.maxMessagesPerHour` | Must be positive integer |
| `rateLimit.jitterMs` | Must be non-negative integer |
| `browser.headless` | Must be boolean |
| `browser.userDataDir` | Must be non-empty string |
| `database.path` | Must be non-empty string |
| `mediaSync.enabled` | Must be boolean |
| `mediaSync.intervalMinutes` | Must be positive integer (if enabled) |
| `autoReply.enabled` | Must be boolean |
| `autoReply.autoSend` | Must be boolean |
| `autoReply.checkInterval` | Must be positive integer (if enabled) |
| `strategyVariants` | Must be array with name + prompt |
| `web.port` | Must be integer 1-65535 |
| `dryRun` | Must be boolean |

### Common Validation Errors

**Error**: `Invalid config: openrouter.apiKey must be a string`
**Fix**: Set `OPENROUTER_API_KEY` environment variable or add `apiKey` to `config.yaml`

**Error**: `Invalid config: reddit.subreddits must be a non-empty array`
**Fix**: Add at least one subreddit to `reddit.subreddits` in `config.yaml`

**Error**: `Invalid config: browser.userDataDir must be a string`
**Fix**: Ensure `browser.userDataDir` is set in `config.yaml`

---

## Troubleshooting

### Configuration Not Loading

**Symptom**: Bot fails to start with validation errors.

**Steps**:
1. Verify `config.yaml` is in the project root
2. Check YAML syntax (use a YAML linter)
3. Verify environment variables are set correctly
4. Check bot logs for specific validation errors

### Credentials Not Working

**Symptom**: Browser login fails.

**Steps**:
1. Verify `REDDIT_USERNAME` and `REDDIT_PASSWORD` are correct
2. Check that the account is not locked or requires 2FA
3. Try manual login via `npm run login`
4. Ensure `BROWSER_HEADLESS=false` for debugging login issues

### AI Not Working

**Symptom**: Image analysis fails or returns errors.

**Steps**:
1. Verify `OPENROUTER_API_KEY` is valid
2. Check API key has sufficient balance
3. Verify `openrouter.model` is available on OpenRouter
4. Check fallback models are set correctly
5. Review logs for specific AI errors

### Browser Session Expired

**Symptom**: Bot stops with "Browser session expired" error.

**Steps**:
1. Delete `data/browser/` directory
2. Run `npm run login` to re-authenticate
3. Restart the bot

### Port Already in Use

**Symptom**: Dashboard fails to start with "Port already in use".

**Steps**:
1. Change `web.port` in `config.yaml`
2. Or kill the process using the port: `lsof -i :3000`