name: Build Development Image

on:
  push:
    branches:
      - main
      - develop
      - 'feature/**'
  pull_request:
    branches:
      - main
      - develop

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-dev:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      pull-requests: write
      
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      
      - name: Extract branch name
        id: branch
        run: |
          BRANCH=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}
          BRANCH_SAFE=$(echo "$BRANCH" | sed 's/[^a-zA-Z0-9._-]/-/g')
          echo "BRANCH=$BRANCH_SAFE" >> $GITHUB_OUTPUT
          echo "Building branch: $BRANCH_SAFE"
      
      - name: Keep placeholders for dev builds
        run: |
          echo "Development build - keeping analytics placeholders"
          echo "Users must provide their own keys via environment variables"
          
          # Verify placeholders are still present (not accidentally replaced)
          if ! grep -q "%%POSTHOG_API_KEY_PLACEHOLDER%%" app/config/analytics_defaults.py; then
            echo "⚠️  WARNING: Placeholders already replaced in source!"
          else
            echo "✅ Placeholders intact for dev build"
          fi
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      
      - name: Log in to Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Determine version
        id: version
        run: |
          BUILD_NUMBER=${{ github.run_number }}
          COMMIT_SHA=${GITHUB_SHA::8}
          BRANCH=${{ steps.branch.outputs.BRANCH }}
          VERSION="dev-${BRANCH}-${BUILD_NUMBER}-${COMMIT_SHA}"
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "📦 Building version: $VERSION"
      
      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=sha,prefix=${{ steps.branch.outputs.BRANCH }}-
          labels: |
            org.opencontainers.image.version=${{ steps.version.outputs.version }}
      
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            VERSION=${{ steps.version.outputs.version }}
            APP_VERSION=${{ steps.version.outputs.version }}
      
      - name: Comment on PR
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v7
        with:
          script: |
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: '✅ Development build completed successfully!\n\n**Note:** This is a development build without embedded analytics keys. Provide your own via environment variables if needed.'
            })