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INTEGRATION_TEST.md

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Integration Test for LNPixels

This script tests the integration between the new lnpixels-app and the API backend.

Steps to test:

  1. Start the API server:

    cd api && npm run dev

  2. In another terminal, start the lnpixels-app:

    cd lnpixels-app && npm run dev

  3. Open the lnpixels-app in your browser (usually http://localhost:3002)

  4. Test the integration:

    • Draw some pixels on the canvas
    • Try both paint and text modes
    • Click the save button to test the new bulk pixels endpoint
    • Verify that the pricing is calculated correctly

What was implemented:

  1. New API Endpoint: POST /api/invoices/pixels

    • Accepts a specific set of pixels instead of a rectangle
    • Validates pixel coordinates, colors, and letters
    • Calculates pricing using the backend pricing logic
    • Supports up to 1000 pixels per request

  2. Updated Frontend:

    • Modified API client to use the new endpoint
    • Updated save modal to send pixels to the new endpoint
    • Fixed WebSocket connections to use correct events
    • Aligned pricing logic with backend

  3. Pricing Updates:

    • Black pixels (#000000) now cost 1 sat (like basic pixels)
    • Colored pixels cost 10 sats
    • Letter pixels cost 100 sats
    • Overwrite rule: 2x last sold price or base price, whichever is higher

  4. CORS Configuration:

    • Added support for the new lnpixels-app port (3002)
    • Updated both HTTP and WebSocket CORS settings

Testing the new endpoint manually:

curl -X POST http://localhost:3000/api/invoices/pixels \
  -H "Content-Type: application/json" \
  -d '{
    "pixels": [
      {"x": 0, "y": 0, "color": "#ff0000", "letter": "A"},
      {"x": 5, "y": 10, "color": "#00ff00"},
      {"x": 15, "y": 20, "color": "#000000"}
    ]
  }'

Expected response: Invoice with amount of 111 sats (100 + 10 + 1)