name: Nightly Release v3-alpha

on:
  schedule:
    - cron: '0 2 * * *'  # 2 AM UTC daily
  workflow_dispatch:
    inputs:
      force_release:
        description: 'Force release even if no changes detected'
        required: false
        default: false
        type: boolean
      dry_run:
        description: 'Run in dry-run mode (no actual release)'
        required: false
        default: true
        type: boolean

jobs:
  nightly-release:
    runs-on: ubuntu-latest
    
    permissions:
      contents: write
      pull-requests: read
      actions: write
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        ref: v3-alpha
        fetch-depth: 0
        token: ${{ secrets.WAILS_REPO_TOKEN || github.token }}
    
    - name: Setup Go
      uses: actions/setup-go@v4
      with:
        go-version: '1.24'
        cache: true
        cache-dependency-path: 'v3/go.sum'
    
    - name: Install Task
      uses: arduino/setup-task@v2
      with:
        version: 3.x
        repo-token: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Setup Git
      run: |
        git config --global user.name "github-actions[bot]"
        git config --global user.email "github-actions[bot]@users.noreply.github.com"
        
        # Configure git to use the token for authentication
        git config --global url."https://x-access-token:${{ secrets.WAILS_REPO_TOKEN || github.token }}@github.com/".insteadOf "https://github.com/"
    
    - name: Check for existing release tag
      id: check_tag
      run: |
        if git describe --tags --exact-match HEAD 2>/dev/null; then
          echo "has_tag=true" >> $GITHUB_OUTPUT
          echo "tag=$(git describe --tags --exact-match HEAD)" >> $GITHUB_OUTPUT
        else
          echo "has_tag=false" >> $GITHUB_OUTPUT
          echo "tag=" >> $GITHUB_OUTPUT
        fi
    
    - name: Check for unreleased changelog content
      id: changelog_check
      run: |
        echo "🔍 Checking UNRELEASED_CHANGELOG.md for content..."
        
        # Run the release script in check mode to see if there's content
        cd v3/tasks/release
        
        # Use the release script itself to check for content
        if go run release.go --check-only 2>/dev/null; then
          echo "has_unreleased_content=true" >> $GITHUB_OUTPUT
          echo "✅ Found unreleased changelog content"
        else
          echo "has_unreleased_content=false" >> $GITHUB_OUTPUT
          echo "ℹ️  No unreleased changelog content found"
        fi

    - name: Quick change detection and early exit
      id: quick_check
      run: |
        echo "🔍 Quick check for changes to determine if we should continue..."
        
        # First check if we have unreleased changelog content
        if [ "${{ steps.changelog_check.outputs.has_unreleased_content }}" == "true" ]; then
          echo "✅ Found unreleased changelog content, proceeding with release"
          echo "has_changes=true" >> $GITHUB_OUTPUT
          echo "should_continue=true" >> $GITHUB_OUTPUT
          echo "reason=Found unreleased changelog content" >> $GITHUB_OUTPUT
          exit 0
        fi
        
        # If no unreleased changelog content, check for git changes as fallback
        echo "No unreleased changelog content found, checking for git changes..."
        
        # Check if current commit has a release tag
        if git describe --tags --exact-match HEAD 2>/dev/null; then
          CURRENT_TAG=$(git describe --tags --exact-match HEAD)
          echo "Current commit has release tag: $CURRENT_TAG"
          
          # For tagged commits, check if there are changes since the tag
          COMMIT_COUNT=$(git rev-list ${CURRENT_TAG}..HEAD --count)
          if [ "$COMMIT_COUNT" -eq 0 ]; then
            echo "has_changes=false" >> $GITHUB_OUTPUT
            echo "should_continue=false" >> $GITHUB_OUTPUT
            echo "reason=No changes since existing tag $CURRENT_TAG and no unreleased changelog content" >> $GITHUB_OUTPUT
          else
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "should_continue=true" >> $GITHUB_OUTPUT
          fi
        else
          # No current tag, check against latest release
          LATEST_TAG=$(git tag --list "v3.0.0-alpha.*" | sort -V | tail -1)
          if [ -z "$LATEST_TAG" ]; then
            echo "No previous release found, proceeding with release"
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "should_continue=true" >> $GITHUB_OUTPUT
          else
            COMMIT_COUNT=$(git rev-list ${LATEST_TAG}..HEAD --count)
            if [ "$COMMIT_COUNT" -gt 0 ]; then
              echo "Found $COMMIT_COUNT commits since $LATEST_TAG"
              echo "has_changes=true" >> $GITHUB_OUTPUT
              echo "should_continue=true" >> $GITHUB_OUTPUT
            else
              echo "has_changes=false" >> $GITHUB_OUTPUT
              echo "should_continue=false" >> $GITHUB_OUTPUT
              echo "reason=No changes since latest release $LATEST_TAG and no unreleased changelog content" >> $GITHUB_OUTPUT
            fi
          fi
        fi
    
    - name: Early exit - No changes detected
      if: |
        steps.quick_check.outputs.should_continue == 'false' && 
        github.event.inputs.force_release != 'true'
      run: |
        echo "🛑 EARLY EXIT: ${{ steps.quick_check.outputs.reason }}"
        echo ""
        echo "ℹ️  No changes detected since last release and force_release is not enabled."
        echo "   Workflow will exit early to save resources."
        echo ""
        echo "   To force a release anyway, run this workflow with 'force_release=true'"
        echo ""
        echo "## 🛑 Early Exit Summary" >> $GITHUB_STEP_SUMMARY
        echo "**Reason:** ${{ steps.quick_check.outputs.reason }}" >> $GITHUB_STEP_SUMMARY
        echo "**Action:** Workflow exited early to save resources" >> $GITHUB_STEP_SUMMARY
        echo "**Force Release:** Set 'force_release=true' to override this behavior" >> $GITHUB_STEP_SUMMARY
        exit 0
    
    - name: Continue with release process
      if: |
        steps.quick_check.outputs.should_continue == 'true' || 
        github.event.inputs.force_release == 'true'
      run: |
        echo "✅ Proceeding with release process..."
        if [ "${{ github.event.inputs.force_release }}" == "true" ]; then
          echo "🔨 FORCE RELEASE: Overriding change detection"
        fi
    
    - name: Run release script
      id: release
      if: |
        steps.quick_check.outputs.should_continue == 'true' || 
        github.event.inputs.force_release == 'true'
      env:
        WAILS_REPO_TOKEN: ${{ secrets.WAILS_REPO_TOKEN || github.token }}
        GITHUB_TOKEN: ${{ secrets.WAILS_REPO_TOKEN || github.token }}
      run: |
        cd v3/tasks/release
        ARGS=()
        if [ "${{ github.event.inputs.dry_run }}" == "true" ]; then
          ARGS+=(--dry-run)
        fi
        go run release.go "${ARGS[@]}"

    - name: Summary
      if: always()
      run: |
        if [ "${{ github.event.inputs.dry_run }}" == "true" ]; then
          echo "## 🧪 DRY RUN Release Summary" >> $GITHUB_STEP_SUMMARY
        else
          echo "## 🚀 Nightly Release Summary" >> $GITHUB_STEP_SUMMARY
        fi
        echo "================================" >> $GITHUB_STEP_SUMMARY

        if [ -n "${{ steps.release.outputs.release_version }}" ]; then
          echo "- **Version:** ${{ steps.release.outputs.release_version }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Tag:** ${{ steps.release.outputs.release_tag }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Status:** ${{ steps.release.outcome == 'success' && '✅ Success' || '⚠️ Failed' }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Mode:** ${{ steps.release.outputs.release_dry_run == 'true' && '🧪 Dry Run' || '🚀 Live release' }}" >> $GITHUB_STEP_SUMMARY
          if [ -n "${{ steps.release.outputs.release_url }}" ]; then
            echo "- **Release URL:** ${{ steps.release.outputs.release_url }}" >> $GITHUB_STEP_SUMMARY
          fi
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### Changelog" >> $GITHUB_STEP_SUMMARY
          if [ "${{ steps.changelog_check.outputs.has_unreleased_content }}" == "true" ]; then
            echo "✅ Unreleased changelog processed and reset." >> $GITHUB_STEP_SUMMARY
          else
            echo "ℹ️ No unreleased changelog content detected." >> $GITHUB_STEP_SUMMARY
          fi
        else
          echo "- Release script did not run (skipped or failed before execution)." >> $GITHUB_STEP_SUMMARY
        fi