name: Module Init, HTML and Lighthouse Check

permissions:
  contents: read
  id-token: write
  pull-requests: write
  checks: write
  statuses: write

on:
    push:
        branches: [ main ]
    pull_request:
        branches: [ main ]

jobs:
    test-module-init:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v4

            - name: Setup Hugo
              uses: peaceiris/actions-hugo@v3
              with:
                hugo-version: ${{ vars.HUGO_VERSION || 'latest' }}
                extended: true

            - name: Create test site
              run: |
                  hugo new site test-site
                  cd test-site
                    
            - name: Initialize Hugo module
              working-directory: ./test-site
              run: |
                    hugo mod init github.com/zetxek/test-site
                    hugo mod get -u github.com/zetxek/adritian-free-hugo-theme

            - name: Configure module ref
              if: github.ref != 'refs/heads/main'
              working-directory: ./test-site
              run: |
                # Use the branch that initiated the PR
                branch_name=${GITHUB_HEAD_REF}
                echo "Using branch: ${branch_name}"
                hugo mod get -u github.com/zetxek/adritian-free-hugo-theme@${branch_name}

            - name: Configure Hugo module in hugo.toml
              working-directory: ./test-site
              run: |
                echo '[module]
                [[module.imports]]
                path = "github.com/zetxek/adritian-free-hugo-theme"' > hugo.toml
            
            - name: Validate Hugo module configuration
              working-directory: ./test-site
              run: |
                hugo mod verify
                hugo mod graph
                
            - name: Upload test site
              uses: actions/upload-artifact@v4
              with:
                name: test-site
                path: test-site
                retention-days: 1

    build-site:
        needs: test-module-init
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v4
            
            - name: Setup Hugo
              uses: peaceiris/actions-hugo@v3
              with:
                hugo-version: 'latest'
                extended: true
                
            - name: Download test site
              uses: actions/download-artifact@v4
              with:
                name: test-site
                path: test-site

            - name: Pack dependencies
              working-directory: ./test-site
              run: |
                    hugo mod npm pack

            - name: (debug) Cat package.json
              working-directory: ./test-site
              run: |
                    cat package.json

            - name: Npm install (bootstrap)
              working-directory: ./test-site
              run: |
                    npm install

            - name: (debug) ls node_modules
              working-directory: ./test-site
              run: |
                    ls node_modules

            - name: Run helper script (copy config and content)
              working-directory: ./test-site
              run: |
                    ./node_modules/@zetxek/adritian-theme-helper/dist/scripts/download-content.js

            - name: Run build
              working-directory: ./test-site
              run: hugo

            - name: Upload built site
              uses: actions/upload-artifact@v4
              with:
                name: built-site
                path: test-site/public
                retention-days: 1

    validate-html:
        needs: build-site
        runs-on: ubuntu-latest
        steps:
            - name: Download built site
              uses: actions/download-artifact@v4
              with:
                name: built-site
                path: ./public

            - name: Print index.html
              working-directory: ./public
              run: |
                    cat index.html

            # Validate HTML syntax with https://github.com/marketplace/actions/html5-validator
            - name: Validate HTML syntax
              uses: Cyb3r-Jak3/html5validator-action@v7.2.0
              with:
                root: ./public
                skip_git_check: true

    lighthouse-check:
        needs: build-site
        runs-on: ubuntu-latest
        permissions:
          contents: write
          pull-requests: write
        steps:
            - name: Checkout repository
              uses: actions/checkout@v4
              
            - name: Download built site
              uses: actions/download-artifact@v4
              with:
                name: built-site
                path: ./public
                
            - name: Create output directory
              run: mkdir -p ${{ github.workspace }}/tmp/artifacts
                
            - name: Start local server
              run: |
                npx http-server ./public -p 8080 &
                SERVER_PID=$!
                echo "Started http-server with PID: $SERVER_PID"
                
                # Wait for server to be ready (max 30 seconds)
                for i in {1..30}; do
                  if curl -s http://localhost:8080 > /dev/null 2>&1; then
                    echo "✅ Server is ready and responding"
                    break
                  fi
                  echo "Waiting for server to start... ($i/30)"
                  sleep 1
                done
                
                # Verify server is actually responding
                if ! curl -s http://localhost:8080 > /dev/null 2>&1; then
                  echo "❌ Server failed to start properly"
                  exit 1
                fi
                
                echo "Server is ready, proceeding with Lighthouse check"
                
            - name: Lighthouse Check
              id: lighthouse
              uses: foo-software/lighthouse-check-action@v12.0.1
              with:
                device: 'all'
                gitHubAccessToken: ${{ secrets.GITHUB_TOKEN }}
                prCommentEnabled: false
                urls: 'http://localhost:8080'
                outputDirectory: ${{ github.workspace }}/tmp/artifacts
                
            - name: Extract and save Lighthouse scores
              id: extract-scores
              run: |
                # Extract scores from Lighthouse reports
                mkdir -p .github
                
                results_file="${{ github.workspace }}/tmp/artifacts/results.json"
                
                if [ ! -f "$results_file" ]; then
                  echo "❌ Error: results.json not found"
                  echo '{"timestamp":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'","commit":"${{ github.sha }}","scores":{}}' > current-scores.json
                  exit 0
                fi
                
                echo "✅ Found results.json, extracting scores..."
                
                echo "{" > current-scores.json
                echo '  "timestamp": "'$(date -u +%Y-%m-%dT%H:%M:%SZ)'",' >> current-scores.json
                echo '  "commit": "${{ github.sha }}",' >> current-scores.json
                echo '  "scores": {' >> current-scores.json
                
                # The results.json from lighthouse-check-action contains an array of results
                # Scores are already 0-100, not 0-1
                num_results=$(jq 'length' "$results_file")
                
                first_device=true
                
                # Loop through results and organize by emulatedFormFactor
                for i in $(seq 0 $((num_results - 1))); do
                  form_factor=$(jq -r ".[$i].emulatedFormFactor // \"unknown\"" "$results_file")
                  
                  perf=$(jq -r ".[$i].scores.performance // 0" "$results_file")
                  a11y=$(jq -r ".[$i].scores.accessibility // 0" "$results_file")
                  bp=$(jq -r ".[$i].scores.bestPractices // 0" "$results_file")
                  seo=$(jq -r ".[$i].scores.seo // 0" "$results_file")
                  
                  echo "  📱 $form_factor: Performance=$perf, Accessibility=$a11y, Best Practices=$bp, SEO=$seo"
                  
                  if [ "$form_factor" = "mobile" ] || [ "$form_factor" = "desktop" ]; then
                    if [ "$first_device" = false ]; then
                      echo "," >> current-scores.json
                    fi
                    first_device=false
                    
                    echo "    \"$form_factor\": {" >> current-scores.json
                    echo "      \"performance\": $perf," >> current-scores.json
                    echo "      \"accessibility\": $a11y," >> current-scores.json
                    echo "      \"best-practices\": $bp," >> current-scores.json
                    echo "      \"seo\": $seo" >> current-scores.json
                    echo -n "    }" >> current-scores.json
                  fi
                done
                
                echo "" >> current-scores.json
                echo "  }" >> current-scores.json
                echo "}" >> current-scores.json
                
                echo "✅ Scores extracted successfully"
                
            - name: Load baseline scores from lighthouse-data branch
              id: load-baseline
              if: github.event_name == 'pull_request'
              run: |
                # Try to fetch baseline scores from lighthouse-data branch
                if git show origin/lighthouse-data:.github/lighthouse-scores.json > baseline-scores.json 2>/dev/null; then
                  echo "baseline_exists=true" >> $GITHUB_OUTPUT
                  baseline_commit=$(jq -r '.commit // ""' baseline-scores.json)
                  echo "✅ Baseline scores loaded from lighthouse-data branch (commit: ${baseline_commit:0:7})"
                else
                  echo "baseline_exists=false" >> $GITHUB_OUTPUT
                  echo "ℹ️ No baseline found - this will be the first baseline after merge"
                  # Create empty baseline
                  echo '{"commit":"","scores":{}}' > baseline-scores.json
                fi
                
            - name: Format Lighthouse results with comparison
              id: format-results
              run: |
                # Function to get score emoji
                get_emoji() {
                  score=$1
                  # Handle empty or invalid scores
                  if [ -z "$score" ] || [ "$score" = "0" ] || [ "$score" = "null" ]; then
                    echo "⚪"
                    return
                  fi
                  if (( $(echo "$score >= 90" | bc -l) )); then
                    echo "🟢"
                  elif (( $(echo "$score >= 50" | bc -l) )); then
                    echo "🟠"
                  else
                    echo "🔴"
                  fi
                }
                
                # Function to get delta indicator
                get_delta() {
                  current=$1
                  baseline=$2
                  if [ "$baseline" = "null" ] || [ -z "$baseline" ] || [ "$baseline" = "0" ]; then
                    echo ""
                    return
                  fi
                  delta=$((current - baseline))
                  if [ $delta -gt 0 ]; then
                    echo "(↑ +$delta)"
                  elif [ $delta -lt 0 ]; then
                    echo "(↓ $delta)"
                  else
                    echo "(→)"
                  fi
                }
                
                # Build URLs
                commit_sha="${{ github.sha }}"
                commit_url="https://github.com/${{ github.repository }}/commit/$commit_sha"
                artifacts_url="https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
                
                echo "## 🔦 Lighthouse Performance Report" > comment.md
                echo "" >> comment.md
                echo "**Test Results for commit:** [\`${commit_sha:0:7}\`]($commit_url)" >> comment.md
                echo "" >> comment.md
                
                # Check if we have baseline scores
                has_baseline=false
                if [ -f "baseline-scores.json" ]; then
                  baseline_commit=$(jq -r '.commit // ""' baseline-scores.json)
                  if [ -n "$baseline_commit" ] && [ "$baseline_commit" != "null" ]; then
                    has_baseline=true
                    baseline_commit_url="https://github.com/${{ github.repository }}/commit/$baseline_commit"
                    echo "_Comparing against baseline from lighthouse-data branch (commit: [\`${baseline_commit:0:7}\`]($baseline_commit_url))_" >> comment.md
                    echo "" >> comment.md
                  fi
                fi
                
                # Check if current scores exist
                if [ ! -f "current-scores.json" ]; then
                  echo "❌ **Error:** No Lighthouse scores were generated." >> comment.md
                  echo "" >> comment.md
                  echo "Check the workflow logs for more details." >> comment.md
                  exit 0
                fi
                
                # Parse and format the results
                found_scores=false
                for device in "mobile" "desktop"; do
                  current_perf=$(jq -r ".scores.$device.performance // 0" current-scores.json)
                  current_a11y=$(jq -r ".scores.$device.accessibility // 0" current-scores.json)
                  current_bp=$(jq -r ".scores.$device[\"best-practices\"] // 0" current-scores.json)
                  current_seo=$(jq -r ".scores.$device.seo // 0" current-scores.json)
                  
                  # Check if we have any real scores (not just 0)
                  if [ "$current_perf" != "0" ] || [ "$current_a11y" != "0" ] || [ "$current_bp" != "0" ] || [ "$current_seo" != "0" ]; then
                    found_scores=true
                    echo "### ${device^} Results" >> comment.md
                    echo "" >> comment.md
                    
                    if [ "$has_baseline" = true ]; then
                      echo "| Category | Score | Change |" >> comment.md
                      echo "|----------|-------|--------|" >> comment.md
                      
                      baseline_perf=$(jq -r ".scores.$device.performance // 0" baseline-scores.json)
                      baseline_a11y=$(jq -r ".scores.$device.accessibility // 0" baseline-scores.json)
                      baseline_bp=$(jq -r ".scores.$device[\"best-practices\"] // 0" baseline-scores.json)
                      baseline_seo=$(jq -r ".scores.$device.seo // 0" baseline-scores.json)
                      
                      echo "| Performance | $(get_emoji $current_perf) $current_perf | $(get_delta $current_perf $baseline_perf) |" >> comment.md
                      echo "| Accessibility | $(get_emoji $current_a11y) $current_a11y | $(get_delta $current_a11y $baseline_a11y) |" >> comment.md
                      echo "| Best Practices | $(get_emoji $current_bp) $current_bp | $(get_delta $current_bp $baseline_bp) |" >> comment.md
                      echo "| SEO | $(get_emoji $current_seo) $current_seo | $(get_delta $current_seo $baseline_seo) |" >> comment.md
                    else
                      echo "| Category | Score |" >> comment.md
                      echo "|----------|-------|" >> comment.md
                      
                      echo "| Performance | $(get_emoji $current_perf) $current_perf |" >> comment.md
                      echo "| Accessibility | $(get_emoji $current_a11y) $current_a11y |" >> comment.md
                      echo "| Best Practices | $(get_emoji $current_bp) $current_bp |" >> comment.md
                      echo "| SEO | $(get_emoji $current_seo) $current_seo |" >> comment.md
                    fi
                    echo "" >> comment.md
                  fi
                done
                
                if [ "$found_scores" = false ]; then
                  echo "⚠️ **Warning:** No Lighthouse scores were found in the reports." >> comment.md
                  echo "" >> comment.md
                  echo "This may be because:" >> comment.md
                  echo "- The Lighthouse action did not generate reports" >> comment.md
                  echo "- The report files have an unexpected format" >> comment.md
                  echo "" >> comment.md
                fi
                
                echo "📊 **[View full detailed reports in workflow artifacts]($artifacts_url)**" >> comment.md
                echo "" >> comment.md
                echo "_Report generated at $(date)_" >> comment.md
                
            - name: Update PR comment
              uses: marocchino/sticky-pull-request-comment@v2
              if: github.event_name == 'pull_request'
              with:
                header: lighthouse-report
                path: comment.md
                
            - name: Upload Lighthouse report
              uses: actions/upload-artifact@v4
              with:
                name: lighthouse-report              
                path: ${{ github.workspace }}/tmp/artifacts
                
            - name: Save baseline scores to lighthouse-data branch
              if: github.ref == 'refs/heads/main' && github.event_name == 'push'
              run: |
                # Copy scores to temp location before branch switching
                # (git clean will remove it from the working directory)
                TEMP_SCORES="/tmp/lighthouse-scores-${{ github.sha }}.json"
                cp "${{ github.workspace }}/current-scores.json" "$TEMP_SCORES"
                
                # Configure git
                git config user.name "github-actions[bot]"
                git config user.email "github-actions[bot]@users.noreply.github.com"
                
                # Try to fetch and checkout the lighthouse-data branch
                if git fetch origin lighthouse-data 2>/dev/null && git checkout lighthouse-data 2>/dev/null; then
                  echo "✅ Checked out existing lighthouse-data branch"
                else
                  echo "Creating new lighthouse-data orphan branch"
                  git checkout --orphan lighthouse-data
                  git rm -rf . 2>/dev/null || true
                  git clean -fd 2>/dev/null || true
                fi
                
                # Copy the lighthouse scores file from temp location
                mkdir -p .github
                cp "$TEMP_SCORES" .github/lighthouse-scores.json
                
                # Commit and push if there are changes
                git add .github/lighthouse-scores.json
                if git diff --staged --quiet 2>/dev/null; then
                  echo "No changes to lighthouse scores"
                else
                  git commit -m "chore: update lighthouse baseline scores [skip ci]"
                  git push origin lighthouse-data
                  echo "✅ Lighthouse baseline scores updated in lighthouse-data branch"
                fi
                
                # Clean up temp file
                rm -f "$TEMP_SCORES"