Files
Pastel/README.md
Claude 88377e258a Use CheapShark's native 0-10 scale for MIN_DEAL_RATING
The previous 0-100 scale with a * 10 conversion was confusing —
CheapShark returns deal ratings as floats (e.g. 9.8, 7.5) so the
config should match. Default is now 8.0 instead of 80.

https://claude.ai/code/session_01LPpSZFfyh6vdV5HGFWjoQX
2026-02-28 02:21:24 +00:00

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# Pastel
A Matrix bot that posts gaming deals and free game alerts to a specified Matrix room.
Deals are sourced from PC/digital storefronts only (Steam, GOG, Humble Store, GreenManGaming, Epic Games Store) — universally accessible regardless of region.
## Data Sources
- **CheapShark** — polled every 2 hours for top deals across Steam, GOG, Humble Store, and GreenManGaming
- **Epic Games Store** — polled daily for free game promotions
- **IsThereAnyDeal** (optional) — flags deals that are at an all-time historical low price
## Quick Start
1. Copy `.env.example` to `.env` and fill in your Matrix credentials and room ID
2. Run with Docker:
```bash
docker build -t pastel .
docker run --env-file .env -v pastel-data:/data pastel
```
Or run directly with Python 3.12+:
```bash
pip install -r requirements.txt
python -m gaming_deals_bot
```
## Obtaining a Matrix Bot Access Token
1. **Create a bot account** on your homeserver (e.g. via Element: register a new account like `@dealsbot:example.com`).
2. **Log in and get the access token** using `curl`:
```bash
curl -XPOST "https://matrix.example.com/_matrix/client/v3/login" \
-H "Content-Type: application/json" \
-d '{
"type": "m.login.password",
"identifier": { "type": "m.id.user", "user": "dealsbot" },
"password": "YOUR_PASSWORD"
}'
```
The response will contain an `access_token` field — copy that value into your `.env` as `MATRIX_BOT_ACCESS_TOKEN`.
3. **Invite the bot** to your deals room, then have the bot **accept the invite** (the bot does this automatically on startup).
> **Tip:** After extracting the token you can change the bot account's password without invalidating the token. Store the token securely — anyone with it can act as the bot.
## Configuration
All configuration is via environment variables (see `.env.example`):
| Variable | Required | Default | Description |
|---|---|---|---|
| `MATRIX_HOMESERVER_URL` | Yes | — | Matrix homeserver URL |
| `MATRIX_BOT_USER_ID` | Yes | — | Bot's Matrix user ID |
| `MATRIX_BOT_ACCESS_TOKEN` | Yes | — | Bot's access token |
| `MATRIX_DEALS_ROOM_ID` | Yes | — | Room ID to post deals in |
| `ITAD_API_KEY` | No | — | IsThereAnyDeal API key for historical low detection |
| `MIN_DEAL_RATING` | No | 8.0 | Minimum CheapShark deal rating (0-10) |
| `MIN_DISCOUNT_PERCENT` | No | 50 | Minimum discount percentage |
| `MAX_PRICE_USD` | No | 20 | Maximum sale price in USD |
| `DATABASE_PATH` | No | deals.db | Path to SQLite database file |
## Preflight Check
Run `--check` to validate your configuration and test connectivity to all services before starting the bot:
```bash
python -m gaming_deals_bot --check
```
This verifies:
- **Matrix** — authentication token is valid and bot has joined the target room
- **CheapShark** — API is reachable
- **Epic Games Store** — API is reachable
- **Frankfurter** — exchange rate API is reachable
- **IsThereAnyDeal** — API key is valid (skipped if not configured)
The command exits with code 0 on success and 1 on failure, so it works in CI and Docker health-checks.
## Behavior
- **First run**: fetches current deals and records them in the database without posting (avoids spamming the room with existing deals)
- **Deduplication**: deals are tracked by game ID + timestamp; duplicates are never reposted
- **Pruning**: deals older than 30 days are pruned from the database so they can be reposted if they return
- **One message per deal**: each deal is posted individually so messages are independently linkable and dismissible
- **Multi-currency pricing**: deal prices are shown in USD, CAD, EUR, and GBP using live exchange rates from the [Frankfurter API](https://api.frankfurter.dev) (ECB data, no API key required). Rates are cached and refreshed twice daily.