name: Release

on:
  push:
    tags:
      - 'v*'

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set image metadata
        id: meta
        run: |
          TAG="${{ gitea.ref_name }}"
          VERSION="${TAG#v}"
          REGISTRY="${{ gitea.server_url }}"
          # Strip https:// for registry address
          REGISTRY="${REGISTRY#https://}"
          REGISTRY="${REGISTRY#http://}"
          IMAGE="${REGISTRY}/${{ gitea.repository }}"
          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
          echo "image=${IMAGE}" >> "$GITHUB_OUTPUT"
          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"

      - name: Login to Gitea Container Registry
        run: |
          echo "${{ secrets.DEPLOY_TOKEN }}" | docker login "${{ gitea.server_url }}" -u "${{ gitea.repository_owner }}" --password-stdin

      - name: Build and push Docker image
        run: |
          IMAGE="${{ steps.meta.outputs.image }}"
          VERSION="${{ steps.meta.outputs.version }}"
          docker build \
            -t "${IMAGE}:${VERSION}" \
            -t "${IMAGE}:latest" \
            .
          docker push "${IMAGE}:${VERSION}"
          docker push "${IMAGE}:latest"

  release:
    runs-on: ubuntu-latest
    needs: docker
    steps:
      - name: Fetch RELEASE_NOTES.md only
        uses: actions/checkout@v4
        with:
          sparse-checkout: RELEASE_NOTES.md
          sparse-checkout-cone-mode: false

      - name: Create Gitea release
        env:
          DEPLOY_TOKEN: ${{ secrets.DEPLOY_TOKEN }}
        run: |
          TAG="${{ gitea.ref_name }}"
          VERSION="${TAG#v}"
          BASE_URL="${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}"

          # Detect pre-release (alpha/beta/rc)
          IS_PRE="false"
          if echo "$TAG" | grep -qE '(alpha|beta|rc)'; then
            IS_PRE="true"
          fi

          # Read release notes if present
          if [ -f RELEASE_NOTES.md ]; then
            export RELEASE_NOTES=$(cat RELEASE_NOTES.md)
            echo "Found RELEASE_NOTES.md"
          else
            export RELEASE_NOTES=""
            echo "No RELEASE_NOTES.md found — release will have no body"
          fi

          BODY_JSON=$(python3 -c "
          import json, os
          notes = os.environ.get('RELEASE_NOTES', '')
          print(json.dumps(notes.strip()))
          ")

          # Create release via Gitea API
          RELEASE=$(curl -s -X POST "$BASE_URL/releases" \
            -H "Authorization: token $DEPLOY_TOKEN" \
            -H "Content-Type: application/json" \
            -d "{
              \"tag_name\": \"$TAG\",
              \"name\": \"$VERSION\",
              \"body\": $BODY_JSON,
              \"draft\": false,
              \"prerelease\": $IS_PRE
            }")

          # Fallback: if release already exists for this tag, reuse it
          RELEASE_ID=$(echo "$RELEASE" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])" 2>/dev/null)
          if [ -z "$RELEASE_ID" ]; then
            echo "::warning::Release already exists for tag $TAG — reusing existing release"
            RELEASE=$(curl -s "$BASE_URL/releases/tags/$TAG" \
              -H "Authorization: token $DEPLOY_TOKEN")
            RELEASE_ID=$(echo "$RELEASE" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
          fi
          echo "Created release $RELEASE_ID for $TAG"