# Pokemon Stock Monitor - Chrome Extension

A Chrome extension that monitors PokemonCenter for stock changes and sends Discord notifications.

## Why a Chrome Extension?

PokemonCenter uses Imperva bot protection that blocks automated browsers (Playwright, Selenium). This extension runs **inside your real Chrome browser**, making it undetectable - to the website, it looks exactly like you browsing manually.

## Installation

1. **Add Icons** (optional but recommended):
   - Create or download three PNG icons: `icon16.png`, `icon48.png`, `icon128.png`
   - Place them in this folder
   - You can use any Pokemon-themed icons or simple colored squares

2. **Load the Extension**:
   - Open Chrome and go to `chrome://extensions`
   - Enable "Developer mode" (toggle in top right)
   - Click "Load unpacked"
   - Select this `chrome-extension` folder
   - The extension icon should appear in your toolbar

3. **Configure**:
   - Click the extension icon
   - Paste your Discord webhook URL
   - Add URLs to monitor (default is PokemonCenter TCG)
   - Set check interval (1-60 minutes)
   - Click "Save Settings"

## How It Works

1. **Background Service Worker**: Runs continuously in Chrome
2. **Periodic Checks**: Uses Chrome's alarm API to check at your interval
3. **Product Parsing**: Fetches pages and parses product data from HTML
4. **Change Detection**: Compares against known products to detect:
   - New product listings
   - Restocks (was out of stock, now in stock)
5. **Discord Notifications**: Sends rich embeds with product info and direct links

## Features

- **Keyword Filtering**: Only track products matching specific keywords
- **New Product Alerts**: Get notified when new items appear
- **Restock Alerts**: Get notified when out-of-stock items return
- **Browser Notifications**: Local notifications in addition to Discord
- **Persistent Storage**: Remembers products across browser restarts

## Tips

- **Keep Chrome Running**: The extension only works while Chrome is open
- **First Run**: After installing, click "Check Now" to do an initial scan
- **Clear History**: Use this if you want to re-detect all products as "new"
- **Multiple URLs**: Add one URL per line in the URLs field

## Troubleshooting

**No notifications sending:**
- Check that your Discord webhook URL is correct
- Make sure "Monitor Enabled" is toggled on
- Check Chrome's console for errors (right-click extension → Inspect popup)

**Extension not loading:**
- Make sure manifest.json is valid JSON
- Check for any icon files referenced but missing

**Products not detected:**
- PokemonCenter may have changed their HTML structure
- Check the browser console for parsing errors