name: Continuous Integration

# CI pipeline for the Skelly Godot project
#
# Code quality checks (formatting, linting, testing) run as independent jobs
# in parallel. Uses tools/run_development.py for consistency with local development.
#
# Features:
# - Independent job execution (no dependencies between format/lint/test)
# - Automatic code formatting with commit back to branch
# - Error reporting and PR comments
# - Manual execution with selective step skipping

on:
  # Trigger on push to any branch - only when relevant files change
  push:
    branches: ['*']
    paths:
      - '**/*.gd'                    # Any GDScript file
      - '.gdlintrc'                  # Linting configuration
      - '.gdformatrc'                # Formatting configuration
      - 'tools/run_development.py'   # Development workflow script
      - '.gitea/workflows/ci.yml'    # This workflow file

  # Trigger on pull requests - same file filters as push
  pull_request:
    branches: ['*']
    paths:
      - '**/*.gd'
      - '.gdlintrc'
      - '.gdformatrc'
      - 'tools/run_development.py'
      - '.gitea/workflows/ci.yml'

  # Allow manual triggering with optional step skipping
  workflow_dispatch:
    inputs:
      skip_format:
        description: 'Skip code formatting'
        required: false
        default: 'false'
        type: boolean
      skip_lint:
        description: 'Skip code linting'
        required: false
        default: 'false'
        type: boolean
      skip_tests:
        description: 'Skip test execution'
        required: false
        default: 'false'
        type: boolean

jobs:
  format:
    name: Code Formatting
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    if: ${{ always() && github.event.inputs.skip_format != 'true' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref || github.ref }}
          token: ${{ secrets.GITHUB_TOKEN }}
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.11'
          cache: 'pip'

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install --upgrade "setuptools<81"
          pip install gdtoolkit==4

      - name: Run code formatting
        id: format
        run: |
          echo "🎨 Running GDScript formatting..."
          python tools/run_development.py --format

      - name: Check for formatting changes
        id: check-changes
        run: |
          if git diff --quiet; then
            echo "📝 No formatting changes detected"
            echo "has_changes=false" >> $GITHUB_OUTPUT
          else
            echo "📝 Formatting changes detected"
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "🔍 Changed files:"
            git diff --name-only
            echo ""
            echo "📊 Diff summary:"
            git diff --stat
          fi

      - name: Commit and push formatting changes
        if: steps.check-changes.outputs.has_changes == 'true'
        run: |
          echo "💾 Committing formatting changes..."

          git config user.name "Gitea Actions"
          git config user.email "actions@gitea.local"

          git add -A

          commit_message="🎨 Auto-format GDScript code

          Automated formatting applied by tools/run_development.py

          🤖 Generated by Gitea Actions
          Workflow: ${{ github.workflow }}
          Run: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"

          git commit -m "$commit_message"

          target_branch="${{ github.event.pull_request.head.ref || github.ref_name }}"
          echo "📤 Pushing changes to branch: $target_branch"
          git push origin HEAD:"$target_branch"

          echo "✅ Formatting changes pushed successfully!"

  lint:
    name: Code Quality Check
    runs-on: ubuntu-latest
    if: ${{ github.event.inputs.skip_lint != 'true' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref || github.ref }}
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.11'
          cache: 'pip'

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install --upgrade "setuptools<81"
          pip install gdtoolkit==4

      - name: Run linting
        id: lint
        run: |
          echo "🔍 Running GDScript linting..."
          python tools/run_development.py --lint

      - name: Upload linting results
        if: failure()
        uses: actions/upload-artifact@v3
        with:
          name: lint-results
          path: |
            **/*.gd
          retention-days: 7

  test:
    name: Test Execution
    runs-on: ubuntu-latest
    if: ${{ github.event.inputs.skip_tests != 'true' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref || github.ref }}
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.11'
          cache: 'pip'

      - name: Install Python dependencies
        run: |
          python -m pip install --upgrade pip
          pip install --upgrade "setuptools<81"
          pip install gdtoolkit==4

      - name: Set up Godot
        uses: chickensoft-games/setup-godot@v1
        with:
          version: 4.3.0
          use-dotnet: false

      - name: Run tests
        id: test
        run: |
          echo "🧪 Running GDScript tests..."
          python tools/run_development.py --test

      - name: Upload test results
        if: failure()
        uses: actions/upload-artifact@v3
        with:
          name: test-results
          path: |
            tests/**/*.gd
          retention-days: 7

  summary:
    name: CI Summary
    runs-on: ubuntu-latest
    needs: [format, lint, test]
    if: always()

    steps:
      - name: Set workflow status
        id: status
        run: |
          format_status="${{ needs.format.result }}"
          lint_status="${{ needs.lint.result }}"
          test_status="${{ needs.test.result }}"

          echo "📊 Workflow Results:"
          echo "🎨 Format: $format_status"
          echo "🔍 Lint: $lint_status"
          echo "🧪 Test: $test_status"

          if [[ "$format_status" == "success" && "$lint_status" == "success" && ("$test_status" == "success" || "$test_status" == "skipped") ]]; then
            echo "overall_status=success" >> $GITHUB_OUTPUT
            echo "✅ All CI checks passed!"
          else
            echo "overall_status=failure" >> $GITHUB_OUTPUT
            echo "❌ Some CI checks failed"
          fi

      - name: Comment on PR (if applicable)
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v6
        with:
          script: |
            const formatStatus = '${{ needs.format.result }}';
            const lintStatus = '${{ needs.lint.result }}';
            const testStatus = '${{ needs.test.result }}';
            const overallStatus = '${{ steps.status.outputs.overall_status }}';

            const getStatusEmoji = (status) => {
              switch(status) {
                case 'success': return '✅';
                case 'failure': return '❌';
                case 'skipped': return '⏭️';
                default: return '⚠️';
              }
            };

            const message = `## 🤖 CI Pipeline Results

            | Step | Status | Result |
            |------|--------|--------|
            | 🎨 Formatting | ${getStatusEmoji(formatStatus)} | ${formatStatus} |
            | 🔍 Linting | ${getStatusEmoji(lintStatus)} | ${lintStatus} |
            | 🧪 Testing | ${getStatusEmoji(testStatus)} | ${testStatus} |

            **Overall Status:** ${getStatusEmoji(overallStatus)} ${overallStatus.toUpperCase()}

            ${overallStatus === 'success'
              ? '🎉 All checks passed! This PR is ready for review.'
              : '⚠️ Some checks failed. Please review the workflow logs and fix any issues.'}

            [View workflow run](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})`;

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: message
            });

      - name: Set final exit code
        run: |
          if [[ "${{ steps.status.outputs.overall_status }}" == "success" ]]; then
            echo "🎉 CI Pipeline completed successfully!"
            exit 0
          else
            echo "❌ CI Pipeline failed"
            exit 1
          fi