name: Release

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Version tag (e.g. v0.1, v1.0.0)"
        required: true
        type: string

env:
  REGISTRY: ghcr.io

jobs:
  release:
    name: Build, Push & Release
    runs-on: ubuntu-latest
    permissions:
      contents: write
      packages: write
      attestations: write
      id-token: write
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set image name
        run: echo "IMAGE_NAME=ghcr.io/${GITHUB_REPOSITORY_OWNER,,}/tanken" >> "$GITHUB_ENV"

      - name: Validate version format
        run: |
          if [[ ! "${{ inputs.version }}" =~ ^v[0-9]+\.[0-9]+(\.[0-9]+)?$ ]]; then
            echo "::error::Version must match vX.Y or vX.Y.Z (e.g. v0.1, v1.0.0)"
            exit 1
          fi

      - name: Check tag doesn't already exist
        run: |
          if git rev-parse "${{ inputs.version }}" >/dev/null 2>&1; then
            echo "::error::Tag ${{ inputs.version }} already exists"
            exit 1
          fi

      - name: Generate changelog
        id: changelog
        run: |
          PREVIOUS_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
          if [ -z "$PREVIOUS_TAG" ]; then
            ALL_COMMITS=$(git log --pretty=format:"%s (%h)" --no-merges)
            COMPARE_TEXT="Initial release"
          else
            ALL_COMMITS=$(git log "${PREVIOUS_TAG}..HEAD" --pretty=format:"%s (%h)" --no-merges)
            COMPARE_TEXT="**Full changelog**: [\`${PREVIOUS_TAG}...${{ inputs.version }}\`](https://github.com/${{ github.repository }}/compare/${PREVIOUS_TAG}...${{ inputs.version }})"
          fi

          FEATURES=""
          FIXES=""
          CHORES=""
          OTHER=""

          while IFS= read -r line; do
            [ -z "$line" ] && continue
            # Strip prefix for the display text
            clean=$(echo "$line" | sed -E 's/^(feat|fix|chore)(\(.+\))?:\s*//')
            if echo "$line" | grep -qE '^feat(\(.+\))?:'; then
              FEATURES="${FEATURES}- ${clean}"$'\n'
            elif echo "$line" | grep -qE '^fix(\(.+\))?:'; then
              FIXES="${FIXES}- ${clean}"$'\n'
            elif echo "$line" | grep -qE '^chore(\(.+\))?:'; then
              CHORES="${CHORES}- ${clean}"$'\n'
            else
              OTHER="${OTHER}- ${line}"$'\n'
            fi
          done <<< "$ALL_COMMITS"

          {
            echo "body<<CHANGELOG_EOF"
            echo "## What's Changed"
            echo ""
            if [ -n "$FEATURES" ]; then
              echo "### 🚀 Features"
              echo ""
              echo "$FEATURES"
            fi
            if [ -n "$FIXES" ]; then
              echo "### 🐛 Bug Fixes"
              echo ""
              echo "$FIXES"
            fi
            if [ -n "$CHORES" ]; then
              echo "### 🧹 Chores"
              echo ""
              echo "$CHORES"
            fi
            if [ -n "$OTHER" ]; then
              echo "### 📝 Other"
              echo ""
              echo "$OTHER"
            fi
            echo "---"
            echo ""
            echo "### Docker Image"
            echo ""
            echo "\`\`\`bash"
            echo "docker pull ${{ env.IMAGE_NAME }}:${{ inputs.version }}"
            echo "\`\`\`"
            echo ""
            echo "$COMPARE_TEXT"
            echo "CHANGELOG_EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Create and push tag
        run: |
          git tag "${{ inputs.version }}"
          git push origin "${{ inputs.version }}"

      - uses: docker/setup-buildx-action@v3

      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          push: true
          tags: |
            ${{ env.IMAGE_NAME }}:${{ inputs.version }}
            ${{ env.IMAGE_NAME }}:latest
          no-cache: true

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ inputs.version }}
          name: ${{ inputs.version }}
          body: ${{ steps.changelog.outputs.body }}
          generate_release_notes: false