name: Dev Nightly Build

on:
  # Nightly at 4:00 AM UTC — only if dev branch has new commits
  schedule:
    - cron: '0 4 * * *'
  # Also build on every push to dev for immediate feedback
  push:
    branches:
      - dev
  # Manual trigger for testing
  workflow_dispatch:

jobs:
  nightly:
    runs-on: ubuntu-latest
    # Skip scheduled runs if dev branch has no new commits in the last 24h
    # (pushes and manual triggers always run)
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout dev branch
        uses: actions/checkout@v6
        with:
          ref: dev

      - name: Check for recent commits (scheduled only)
        if: github.event_name == 'schedule'
        id: recent
        run: |
          LAST_COMMIT=$(git log -1 --format=%ct)
          NOW=$(date +%s)
          DIFF=$(( NOW - LAST_COMMIT ))
          if [ "$DIFF" -gt 86400 ]; then
            echo "No commits in the last 24h, skipping build"
            echo "skip=true" >> "$GITHUB_OUTPUT"
          else
            echo "skip=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Set up Python
        if: steps.recent.outputs.skip != 'true'
        uses: actions/setup-python@v6
        with:
          python-version: "3.11"
          cache: pip
          cache-dependency-path: requirements-dev.txt

      - name: Install dependencies and run tests
        if: steps.recent.outputs.skip != 'true'
        env:
          PYTHONPATH: ${{ github.workspace }}
        run: |
          python -m pip install --upgrade pip
          python -m pip install -r requirements-dev.txt
          python -m compileall api core database services scripts web_server.py wsgi.py beatport_unified_scraper.py
          python -m pytest

      - name: Generate version tag
        if: steps.recent.outputs.skip != 'true'
        id: version
        run: |
          # Read base version from web_server.py
          BASE=$(python -c "
          import re
          with open('web_server.py') as f:
              m = re.search(r'_SOULSYNC_BASE_VERSION\s*=\s*\"(.+?)\"', f.read())
              print(m.group(1) if m else 'dev')
          ")
          SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)
          DATE=$(date -u +%Y%m%d)
          TAG="${BASE}-dev.${DATE}.${SHORT_SHA}"
          echo "tag=$TAG" >> "$GITHUB_OUTPUT"
          echo "Image tag: $TAG"

      - name: Set up QEMU
        if: steps.recent.outputs.skip != 'true'
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        if: steps.recent.outputs.skip != 'true'
        uses: docker/setup-buildx-action@v4

      - name: Log in to GHCR
        if: steps.recent.outputs.skip != 'true'
        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push to GHCR
        if: steps.recent.outputs.skip != 'true'
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          pull: true
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            COMMIT_SHA=${{ github.sha }}
          tags: |
            ghcr.io/${{ github.repository_owner }}/soulsync:dev
            ghcr.io/${{ github.repository_owner }}/soulsync:${{ steps.version.outputs.tag }}