name: Release

on:
  push:
    tags:
      - 'v*.*.*'
  workflow_dispatch:
    inputs:
      version:
        description: 'Version to release (e.g., v1.2.3)'
        required: true
        type: string
      prerelease:
        description: 'Mark as pre-release'
        required: false
        default: false
        type: boolean

env:
  NODE_VERSION: '20.x'

jobs:
  validate-version:
    name: Validate Version
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.version.outputs.version }}
      is_prerelease: ${{ steps.version.outputs.is_prerelease }}

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 0

    - name: Extract version
      id: version
      run: |
        if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
          VERSION="${{ github.event.inputs.version }}"
          IS_PRERELEASE="${{ github.event.inputs.prerelease }}"
        else
          VERSION="${GITHUB_REF#refs/tags/}"
          # Check if version contains pre-release identifiers
          if [[ "$VERSION" =~ -[a-zA-Z] ]]; then
            IS_PRERELEASE=true
          else
            IS_PRERELEASE=false
          fi
        fi

        echo "version=$VERSION" >> $GITHUB_OUTPUT
        echo "is_prerelease=$IS_PRERELEASE" >> $GITHUB_OUTPUT
        echo "Release version: $VERSION (prerelease: $IS_PRERELEASE)"

    - name: Validate semantic version
      run: |
        VERSION="${{ steps.version.outputs.version }}"
        if [[ ! "$VERSION" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.-]+)?(\+[a-zA-Z0-9.-]+)?$ ]]; then
          echo "Invalid semantic version: $VERSION"
          exit 1
        fi

  build-and-test:
    name: Build and Test
    runs-on: ubuntu-latest
    needs: validate-version

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

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Run linting
      run: npm run lint

    - name: Run tests
      run: npm test

    - name: Run multi-scheme validation
      run: npm run test:multi-schemes

    - name: Build project
      run: npm run build

    - name: Build demo
      run: npm run build:demo

    - name: Generate documentation
      run: npm run docs

    - name: Validate build artifacts
      run: |
        test -d dist || (echo "Build failed - dist directory not found" && exit 1)
        test -d dist/demo || (echo "Demo build failed - dist/demo directory not found" && exit 1)
        test -d docs || (echo "Documentation generation failed" && exit 1)

    - name: Upload build artifacts
      uses: actions/upload-artifact@v4
      with:
        name: release-artifacts
        path: |
          dist/
          docs/
          CHANGELOG.md
          README.md
          MULTI_SCHEME_GUIDE.md
        retention-days: 30

  create-release:
    name: Create Release
    runs-on: ubuntu-latest
    needs: [validate-version, build-and-test]
    permissions:
      contents: write
      pull-requests: read

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 0

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

    - name: Generate release notes
      id: release_notes
      run: |
        VERSION="${{ needs.validate-version.outputs.version }}"

        # Extract changelog for this version
        if [ -f CHANGELOG.md ]; then
          # Get the changelog section for this version
          CHANGELOG_SECTION=$(sed -n "/^## \[${VERSION#v}\]/,/^## \[/p" CHANGELOG.md | head -n -1)
          if [ -n "$CHANGELOG_SECTION" ]; then
            echo "Found changelog section for version ${VERSION#v}"
            echo "$CHANGELOG_SECTION" > release_notes.md
          else
            echo "No changelog section found for version ${VERSION#v}, generating default notes"
            echo "## Changes in ${VERSION}" > release_notes.md
            echo "" >> release_notes.md
            echo "This release includes various improvements and updates to the Owen Animation System." >> release_notes.md
          fi
        else
          echo "## Changes in ${VERSION}" > release_notes.md
          echo "" >> release_notes.md
          echo "This release includes various improvements and updates to the Owen Animation System." >> release_notes.md
        fi

        # Add commit summary since last tag
        echo "" >> release_notes.md
        echo "### Commits since last release:" >> release_notes.md
        git log --oneline $(git describe --tags --abbrev=0 2>/dev/null || echo "HEAD~10")..HEAD >> release_notes.md || true

    - name: Create GitHub Release
      uses: softprops/action-gh-release@v1
      with:
        tag_name: ${{ needs.validate-version.outputs.version }}
        name: Owen Animation System ${{ needs.validate-version.outputs.version }}
        body_path: release_notes.md
        draft: false
        prerelease: ${{ needs.validate-version.outputs.is_prerelease == 'true' }}
        files: |
          artifacts/dist/**
          artifacts/docs/**
          artifacts/CHANGELOG.md
          artifacts/README.md
          artifacts/MULTI_SCHEME_GUIDE.md
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  publish-npm:
    name: Publish to NPM
    runs-on: ubuntu-latest
    needs: [validate-version, create-release]
    if: needs.validate-version.outputs.is_prerelease == 'false'
    environment: npm-publish

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

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'
        registry-url: 'https://registry.npmjs.org'

    - name: Install dependencies
      run: npm ci

    - name: Build project
      run: npm run build

    - name: Update package version
      run: |
        VERSION="${{ needs.validate-version.outputs.version }}"
        npm version ${VERSION#v} --no-git-tag-version

    - name: Publish to NPM
      run: npm publish --access public
      env:
        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

  deploy-demo:
    name: Deploy Demo
    runs-on: ubuntu-latest
    needs: [validate-version, create-release]

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

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Build demo
      run: npm run build:demo

    - name: Deploy demo to GitHub Pages
      uses: peaceiris/actions-gh-pages@v4
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: ./dist/demo
        destination_dir: releases/${{ needs.validate-version.outputs.version }}

    - name: Update latest demo link
      if: needs.validate-version.outputs.is_prerelease == 'false'
      uses: peaceiris/actions-gh-pages@v4
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: ./dist/demo
        destination_dir: latest