name: Release

on:
  push:
    tags:
      - 'v*.*.*'  # Match semantic version tags (v0.2.3, v1.0.0, etc.)
  workflow_dispatch:
    inputs:
      tag:
        description: 'Git tag to release (e.g., v0.2.3)'
        required: true
        type: string

# Ensure only one release runs at a time
concurrency:
  group: release
  cancel-in-progress: false

jobs:
  # ============================================================================
  # JOB 1: Validate release preconditions
  # ============================================================================
  validate:
    name: Validate Release
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.version.outputs.version }}
      tag: ${{ steps.version.outputs.tag }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Full history for branch checks

      - name: Extract version from tag
        id: version
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            TAG="${{ github.event.inputs.tag }}"
          else
            TAG=${GITHUB_REF#refs/tags/}
          fi
          VERSION=${TAG#v}  # Remove 'v' prefix

          echo "tag=$TAG" >> $GITHUB_OUTPUT
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Release version: $VERSION"

      - name: Verify tag format
        run: |
          TAG="${{ steps.version.outputs.tag }}"
          if ! [[ "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "ERROR: Tag must follow semantic versioning (v0.2.3, v1.0.0, etc.)"
            echo "Got: $TAG"
            exit 1
          fi
          echo "✓ Tag format is valid"

      - name: Verify release is from main branch
        run: |
          # Get the branch that contains this tag
          BRANCH=$(git branch -r --contains ${{ steps.version.outputs.tag }} | grep 'origin/main' || echo "")
          if [ -z "$BRANCH" ]; then
            echo "ERROR: Tag ${{ steps.version.outputs.tag }} is not on main branch"
            echo "Releases must be created from main branch only"
            exit 1
          fi
          echo "✓ Tag is on main branch"

      - name: Verify pyproject.toml version matches tag
        run: |
          PYPROJECT_VERSION=$(grep '^version = ' pyproject.toml | cut -d'"' -f2)
          TAG_VERSION="${{ steps.version.outputs.version }}"

          if [ "$PYPROJECT_VERSION" != "$TAG_VERSION" ]; then
            echo "ERROR: Version mismatch!"
            echo "  pyproject.toml: $PYPROJECT_VERSION"
            echo "  Git tag:        $TAG_VERSION"
            echo ""
            echo "Please update pyproject.toml to match the tag version"
            exit 1
          fi
          echo "✓ pyproject.toml version matches tag ($PYPROJECT_VERSION)"

      - name: Verify CHANGELOG.md has version entry
        run: |
          VERSION="${{ steps.version.outputs.version }}"

          if ! grep -q "## \[$VERSION\]" CHANGELOG.md; then
            echo "ERROR: CHANGELOG.md missing entry for version $VERSION"
            echo ""
            echo "Please add a changelog entry:"
            echo "  ## [$VERSION] - $(date +%Y-%m-%d)"
            exit 1
          fi
          echo "✓ CHANGELOG.md has entry for $VERSION"

      - name: Verify CHANGELOG entry is not empty
        run: |
          VERSION="${{ steps.version.outputs.version }}"

          # Extract section between this version and next version/unreleased
          CHANGELOG_SECTION=$(sed -n "/## \[$VERSION\]/,/## \[/p" CHANGELOG.md | head -n -1)

          # Remove header line and whitespace
          CONTENT=$(echo "$CHANGELOG_SECTION" | tail -n +2 | grep -v '^[[:space:]]*$' || echo "")

          if [ -z "$CONTENT" ]; then
            echo "ERROR: CHANGELOG.md entry for $VERSION is empty"
            echo "Please add release notes describing the changes"
            exit 1
          fi
          echo "✓ CHANGELOG.md entry is not empty"

      - name: Validation summary
        run: |
          echo "## ✅ Release Validation Passed" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Version**: ${{ steps.version.outputs.version }}" >> $GITHUB_STEP_SUMMARY
          echo "**Tag**: ${{ steps.version.outputs.tag }}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "All preconditions met. Proceeding with release..." >> $GITHUB_STEP_SUMMARY

  # ============================================================================
  # JOB 2: Run full test suite
  # ============================================================================
  test:
    name: Run Tests
    needs: validate
    runs-on: ubuntu-latest

    strategy:
      matrix:
        python-version: ["3.8", "3.9", "3.10", "3.11"]

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libglib2.0-dev libdbus-1-dev libcairo2-dev libgirepository1.0-dev

      - name: Install Python dependencies
        run: |
          python -m pip install --upgrade pip
          pip install pytest pytest-asyncio pytest-cov pytest-timeout
          pip install rns bleak bluezero dbus-python

      - name: Create package structure
        run: |
          
          touch src/ble_reticulum/__init__.py

      - name: Run tests
        run: |
          python -m pytest tests/ -v -m "not hardware" \
            --ignore=tests/test_v2_2_identity_handshake.py \
            --ignore=tests/test_v2_2_mac_sorting.py \
            --ignore=tests/test_v2_2_race_conditions.py \
            --cov=src/ble_reticulum \
            --cov-report=term-missing \
            --tb=short

  # ============================================================================
  # JOB 3: Build release artifacts
  # ============================================================================
  build:
    name: Build Release Artifacts
    runs-on: ubuntu-latest
    needs: [validate, test]

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      # Extract release notes from CHANGELOG.md
      - name: Extract release notes
        id: release_notes
        run: |
          VERSION="${{ needs.validate.outputs.version }}"

          # Extract section between this version and next version
          sed -n "/## \[$VERSION\]/,/## \[/p" CHANGELOG.md | head -n -1 | tail -n +2 > RELEASE_NOTES.md

          # Add installation instructions
          cat >> RELEASE_NOTES.md << 'EOF'

          ---

          ## Installation

          ### Quick Install (Recommended)

          ```bash
          git clone https://github.com/torlando-tech/ble-reticulum.git
          cd ble-reticulum
          git checkout ${{ needs.validate.outputs.tag }}
          chmod +x install.sh
          ./install.sh
          ```

          ### Direct Download

          ```bash
          # Download installer
          wget https://github.com/torlando-tech/ble-reticulum/releases/download/${{ needs.validate.outputs.tag }}/install.sh
          chmod +x install.sh

          # Download source
          wget https://github.com/torlando-tech/ble-reticulum/releases/download/${{ needs.validate.outputs.tag }}/ble-reticulum-${{ needs.validate.outputs.version }}-source.tar.gz
          tar xzf ble-reticulum-${{ needs.validate.outputs.version }}-source.tar.gz
          cd ble-reticulum-${{ needs.validate.outputs.version }}

          # Run installer
          ./install.sh
          ```

          See [README.md](https://github.com/torlando-tech/ble-reticulum/blob/main/README.md) for full installation instructions.

          ## Upgrading

          If upgrading from a previous version:

          1. Pull latest code: `git pull origin main`
          2. Checkout this release: `git checkout ${{ needs.validate.outputs.tag }}`
          3. Re-run installer: `./install.sh`
          4. Restart rnsd: `sudo systemctl restart rnsd` (or `pkill rnsd && rnsd &`)

          ## Verification

          After installation, verify the interface is working:

          ```bash
          rnsd --verbose  # Should show BLE interface starting
          rnstatus        # Should list BLE interface
          ```

          ## Pre-built Wheels

          Pi Zero W users with Python 3.13 will automatically receive pre-built wheels (saves ~20 minutes compilation time). See the [armv6l-wheels-v1](https://github.com/torlando-tech/ble-reticulum/releases/tag/armv6l-wheels-v1) release for details.
          EOF

          echo "✓ Release notes prepared"

      # Create checksums for all files we'll upload
      - name: Generate release artifacts
        run: |
          VERSION="${{ needs.validate.outputs.version }}"
          mkdir -p release-artifacts

          # Copy install script
          cp install.sh release-artifacts/install.sh

          # Copy example config
          cp examples/config_example.toml release-artifacts/config_example.toml

          # Create source archive
          git archive --format=tar.gz --prefix=ble-reticulum-$VERSION/ HEAD > release-artifacts/ble-reticulum-$VERSION-source.tar.gz

          # Create checksums
          cd release-artifacts
          sha256sum * > SHA256SUMS.txt
          cd ..

          echo "✓ Release artifacts created"

      - name: Display checksums
        run: |
          echo "## Release Artifacts" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY
          cat release-artifacts/SHA256SUMS.txt >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY

      # Upload artifacts for release job
      - name: Upload artifacts
        uses: actions/upload-artifact@v4
        with:
          name: release-artifacts
          path: release-artifacts/
          retention-days: 5

      - name: Upload release notes
        uses: actions/upload-artifact@v4
        with:
          name: release-notes
          path: RELEASE_NOTES.md
          retention-days: 5

  # ============================================================================
  # JOB 4: Create GitHub Release
  # ============================================================================
  release:
    name: Create GitHub Release
    runs-on: ubuntu-latest
    needs: [validate, build]
    permissions:
      contents: write  # Required to create releases

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Download artifacts
        uses: actions/download-artifact@v4
        with:
          name: release-artifacts
          path: release-artifacts/

      - name: Download release notes
        uses: actions/download-artifact@v4
        with:
          name: release-notes

      - name: Create GitHub Release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh release create "${{ needs.validate.outputs.tag }}" \
            release-artifacts/* \
            --title "BLE-Reticulum ${{ needs.validate.outputs.tag }}" \
            --notes-file RELEASE_NOTES.md

      - name: Release summary
        run: |
          echo "## 🎉 Release Created!" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Version**: ${{ needs.validate.outputs.tag }}" >> $GITHUB_STEP_SUMMARY
          echo "**Commit**: ${{ github.sha }}" >> $GITHUB_STEP_SUMMARY
          echo "**URL**: https://github.com/${{ github.repository }}/releases/tag/${{ needs.validate.outputs.tag }}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### Release Assets" >> $GITHUB_STEP_SUMMARY
          echo "- ✅ install.sh" >> $GITHUB_STEP_SUMMARY
          echo "- ✅ config_example.toml" >> $GITHUB_STEP_SUMMARY
          echo "- ✅ ble-reticulum-${{ needs.validate.outputs.version }}-source.tar.gz" >> $GITHUB_STEP_SUMMARY
          echo "- ✅ SHA256SUMS.txt" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "📦 [View Release](https://github.com/${{ github.repository }}/releases/tag/${{ needs.validate.outputs.tag }})" >> $GITHUB_STEP_SUMMARY