name: Release
on:
  workflow_dispatch:
    inputs:
      bump:
        description: 'Version bump type'
        required: true
        default: patch
        type: choice
        options: [patch, minor, major]

jobs:
  build-test:
    runs-on: docker
    container:
      image: gitea.jeanlucmakiola.de/makiolaj/docker-node-and-go:064281efa4401d6f440edd18dc467929b89d7f71
    env:
      GOTOOLCHAIN: local
    steps:
      - name: Checkout code
        uses: actions/checkout@v6
      - name: Check formatting
        run: |
          unformatted=$(gofmt -l .)
          if [ -n "$unformatted" ]; then
            echo "Unformatted files:"
            echo "$unformatted"
            exit 1
          fi

      - name: Run go vet
        run: go vet ./...

      - name: Run tests with coverage
        run: |
          go test -v -coverprofile=coverage.out -coverpkg=./... ./...
          go tool cover -func=coverage.out | tee coverage.txt
          cov=$(go tool cover -func=coverage.out | grep total: | awk '{print substr($3, 1, length($3)-1)}')
          cov=${cov%.*}
          if [ "$cov" -lt 80 ]; then
            echo "::warning::Test coverage is below 80% ($cov%)"
          fi
      - name: Build binary
        run: go build ./...

  release:
    runs-on: dind
    needs: build-test
    env:
      DOCKER_HOST: tcp://dind:2375
    steps:
      - name: Install dependencies
        run: apk add --no-cache git curl jq

      - name: Checkout with full history
        run: |
          GITEA_HOST="${{ gitea.server_url }}"
          GITEA_HOST="${GITEA_HOST#https://}"
          GITEA_HOST="${GITEA_HOST#http://}"
          git clone "https://oauth2:${{ secrets.GITEA_TOKEN }}@${GITEA_HOST}/${{ gitea.repository }}.git" .
          git fetch --tags

      - name: Compute new version
        run: |
          LATEST=$(git tag --sort=-version:refname | { grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' || true; } | head -1)
          LATEST=${LATEST:-v0.0.0}
          VERSION="${LATEST#v}"
          MAJOR=$(echo "$VERSION" | cut -d. -f1)
          MINOR=$(echo "$VERSION" | cut -d. -f2)
          PATCH=$(echo "$VERSION" | cut -d. -f3)
          case "${{ gitea.event.inputs.bump }}" in
            major) MAJOR=$((MAJOR + 1)); MINOR=0; PATCH=0 ;;
            minor) MINOR=$((MINOR + 1)); PATCH=0 ;;
            patch) PATCH=$((PATCH + 1)) ;;
          esac
          NEW_VERSION="v${MAJOR}.${MINOR}.${PATCH}"
          echo "NEW_VERSION=${NEW_VERSION}" >> "${GITHUB_ENV:-$GITEA_ENV}"
          echo "Bumping ${LATEST} → ${NEW_VERSION}"

      - name: Create and push tag
        run: |
          git config user.name "ci-bot"
          git config user.email "ci@noreply.local"
          git tag "$NEW_VERSION"
          GITEA_HOST="${{ gitea.server_url }}"
          GITEA_HOST="${GITEA_HOST#https://}"
          GITEA_HOST="${GITEA_HOST#http://}"
          git push "https://oauth2:${{ secrets.GITEA_TOKEN }}@${GITEA_HOST}/${{ gitea.repository }}.git" "$NEW_VERSION"

      - name: Log in to Gitea registry
        run: |
          REGISTRY="${{ gitea.server_url }}"
          REGISTRY="${REGISTRY#https://}"
          REGISTRY="${REGISTRY#http://}"
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login "$REGISTRY" -u "${{ gitea.actor }}" --password-stdin

      - name: Build and push Docker image
        run: |
          REGISTRY="${{ gitea.server_url }}"
          REGISTRY="${REGISTRY#https://}"
          REGISTRY="${REGISTRY#http://}"
          IMAGE="$REGISTRY/$(echo '${{ gitea.repository }}' | tr '[:upper:]' '[:lower:]')"
          docker build -t "$IMAGE:$NEW_VERSION" -t "$IMAGE:latest" .
          docker push "$IMAGE:$NEW_VERSION"
          docker push "$IMAGE:latest"

      - name: Create Gitea release
        run: |
          REGISTRY="${{ gitea.server_url }}"
          REGISTRY="${REGISTRY#https://}"
          REGISTRY="${REGISTRY#http://}"
          IMAGE="$REGISTRY/$(echo '${{ gitea.repository }}' | tr '[:upper:]' '[:lower:]')"

          PREV_TAG=$(git tag --sort=-version:refname | { grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' || true; } | sed -n '2p')
          if [ -n "$PREV_TAG" ]; then
            CHANGELOG=$(git log --pretty=format:"- %s" "${PREV_TAG}..HEAD")
          else
            CHANGELOG=$(git log --pretty=format:"- %s")
          fi

          BODY=$(printf '## Docker Image\n```\ndocker pull %s:%s\n```\n\n## Changelog\n%s' "$IMAGE" "$NEW_VERSION" "$CHANGELOG")

          jq -n --arg tag "$NEW_VERSION" --arg name "$NEW_VERSION" --arg body "$BODY" \
            '{tag_name: $tag, name: $name, body: $body}' > /tmp/release.json

          curl -s -X POST \
            -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
            -H "Content-Type: application/json" \
            "${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/releases" \
            -d @/tmp/release.json