.github/workflows/ci.yml

# ci.yml — Run on every push and PR to main
#
# Why CI for a learning project?
#   Without CI, broken code only gets caught when you run it locally.
#   CI catches problems before they reach main — import errors, syntax
#   errors, obvious config mistakes — in under 2 minutes.
#
# Jobs:
#   lint-backend  — Python syntax check + import validation
#   lint-frontend — Node/npm install + Vite build (catches broken JSX)
#
# Deployment (Render + Vercel) is handled by their own GitHub integrations:
#   - Render: connect repo in dashboard → auto-deploys on push to main
#   - Vercel: connect repo in dashboard → auto-deploys on push to main
#   Both have free GitHub integrations that are simpler than Actions deploy steps.

name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  lint-backend:
    name: Backend — lint & import check
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: pip

      - name: Install dependencies
        run: pip install -r requirements.txt

      - name: Check syntax (py_compile)
        run: |
          python -m py_compile backend/config.py
          python -m py_compile backend/models/schemas.py
          python -m py_compile backend/services/generation.py
          python -m py_compile backend/services/ingestion_service.py
          python -m py_compile backend/main.py
          python -m py_compile backend/services/repo_map_service.py
          python -m py_compile backend/services/agent.py
          python -m py_compile backend/services/diagram_service.py
          python -m py_compile ingestion/repo_fetcher.py
          python -m py_compile ingestion/file_filter.py
          python -m py_compile ingestion/code_chunker.py
          python -m py_compile ingestion/embedder.py
          python -m py_compile ingestion/qdrant_store.py
          python -m py_compile retrieval/retrieval.py

      - name: Validate imports (no runtime errors on import)
        env:
          # Provide dummy env vars so config.py doesn't raise on missing keys
          QDRANT_URL: https://dummy.qdrant.io
          QDRANT_API_KEY: dummy
          GROQ_API_KEY: dummy
        run: |
          python -c "from backend.config import settings; print('config OK')"
          python -c "from backend.models.schemas import QueryRequest; print('schemas OK')"
          python -c "from backend.services.generation import classify_query; print('generation OK')"
          python -c "from ingestion.file_filter import should_index; print('file_filter OK')"
          python -c "from ingestion.code_chunker import chunk_file; print('code_chunker OK')"

  lint-frontend:
    name: Frontend — install & build
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up Node
        uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: npm
          cache-dependency-path: ui/package-lock.json

      - name: Install dependencies
        working-directory: ui
        run: npm ci

      - name: Build (catches broken JSX and missing imports)
        working-directory: ui
        env:
          VITE_API_URL: https://dummy.onrender.com
        run: npm run build