name: Tests

on:
    workflow_dispatch:
    pull_request:
        branches:
            - main
    workflow_call:

# Set default permissions for all jobs
permissions:
    contents: read # Needed to check out code
    checks: write # Needed to report test results
    pull-requests: write # Needed to add comments/annotations to PRs

jobs:
    test:
        strategy:
            fail-fast: false
            matrix:
                os: [ubuntu-latest, windows-latest]
        runs-on: ${{ matrix.os }}
        name: ${{ matrix.os == 'ubuntu-latest' && 'test' || format('test ({0})', matrix.os) }}
        defaults:
            run:
                shell: bash
        steps:
            - name: Checkout code
              uses: actions/checkout@v4

            - name: Setup Node.js environment
              uses: actions/setup-node@v4
              with:
                  node-version: 22

            # Setup Python for coverage script
            - name: Setup Python
              uses: actions/setup-python@v4
              with:
                  python-version: "3.10"

            - name: Install Python dependencies
              run: |
                  python -m pip install --upgrade pip
                  pip install requests

            # Cache root dependencies - only reuse if package-lock.json exactly matches
            - name: Cache root dependencies
              uses: actions/cache@v4
              id: root-cache
              with:
                  path: node_modules
                  key: ${{ runner.os }}-npm-${{ hashFiles('package-lock.json') }}

            # Cache webview-ui dependencies - only reuse if package-lock.json exactly matches
            - name: Cache webview-ui dependencies
              uses: actions/cache@v4
              id: webview-cache
              with:
                  path: webview-ui/node_modules
                  key: ${{ runner.os }}-npm-webview-${{ hashFiles('webview-ui/package-lock.json') }}

            - name: Install root dependencies
              if: steps.root-cache.outputs.cache-hit != 'true'
              run: npm ci

            - name: Install webview-ui dependencies
              if: steps.webview-cache.outputs.cache-hit != 'true'
              run: cd webview-ui && npm ci

            - name: Set up NPM on Windows
              if: runner.os == 'Windows'
              run: |
                  npm config set script-shell "C:\\Program Files\\Git\\bin\\bash.exe"

            - name: Type Check
              run: npm run check-types

            - name: ESLint Check
              run: npm run lint

            - name: Prettier / Format Check
              run: npm run format

            # Build the extension before running tests
            - name: Build Tests and Extension
              run: npm run pretest

            # Unit Tests disabled due to module system conflicts between backend and webview-ui
            # - name: Unit Tests
            #   run: npm run test:unit

            # Run extension tests with coverage
            - name: Extension Tests with Coverage
              id: extension_coverage
              continue-on-error: true
              run: |
                  node ./scripts/test-ci.js > extension_coverage.txt 2>&1
                  # Default the encoding to UTF-8 - It's not the default on Windows
                  PYTHONUTF8=1 PYTHONPATH=.github/scripts python -m coverage_check extract-coverage extension_coverage.txt --type=extension --github-output --verbose

            # Run webview tests with coverage
            - name: Webview Tests with Coverage
              id: webview_coverage
              continue-on-error: true
              run: |
                  cd webview-ui
                  # Ensure coverage dependency is installed
                  npm install --no-save @vitest/coverage-v8
                  npm run test:coverage > webview_coverage.txt 2>&1
                  cd ..
                  # Default the encoding to UTF-8 - It's not the default on Windows
                  PYTHONUTF8=1 PYTHONPATH=.github/scripts python -m coverage_check extract-coverage webview-ui/webview_coverage.txt --type=webview --github-output --verbose

            # Save coverage reports as artifacts (workflow-scoped)
            - name: Save Coverage Reports
              uses: actions/upload-artifact@v4
              # Only upload artifacts on Linux - We only need coverage from one OS
              if: runner.os == 'Linux'
              with:
                  name: pr-coverage-reports
                  path: |
                      extension_coverage.txt
                      webview-ui/webview_coverage.txt
                  retention-period: workflow # Artifacts are automatically deleted when the workflow completes

            # Set the check as failed if any of the tests failed
            - name: Print test results and check for failures
              run: |
                  echo "Extension Tests Result: ${{ steps.extension_coverage.outcome }}"
                  cat extension_coverage.txt

                  echo "Webview Tests Result: ${{ steps.webview_coverage.outcome }}"
                  cat webview-ui/webview_coverage.txt

                  # Check if any of the test steps failed
                  # https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/accessing-contextual-information-about-workflow-runs#steps-context
                  if [ "${{ steps.extension_coverage.outcome }}" != "success" ] || [ "${{ steps.webview_coverage.outcome }}" != "success" ]; then
                      echo "Tests failed."
                      exit 1
                  fi

    coverage:
        needs: test
        runs-on: ubuntu-latest
        # Only run on PRs to main branch
        if: github.event_name == 'pull_request' && github.base_ref == 'main'
        steps:
            - name: Checkout code
              uses: actions/checkout@v4
              with:
                  fetch-depth: 0 # Fetch all history for accurate comparison

            # Setup Python for coverage script
            - name: Setup Python
              uses: actions/setup-python@v4
              with:
                  python-version: "3.10"

            - name: Install Python dependencies
              run: |
                  python -m pip install --upgrade pip
                  pip install requests

            - name: Setup Node.js environment
              uses: actions/setup-node@v4
              with:
                  node-version: 22

            # Cache root dependencies - only reuse if package-lock.json exactly matches
            - name: Cache root dependencies
              uses: actions/cache@v4
              id: root-cache
              with:
                  path: node_modules
                  key: ${{ runner.os }}-npm-${{ hashFiles('package-lock.json') }}

            # Cache webview-ui dependencies - only reuse if package-lock.json exactly matches
            - name: Cache webview-ui dependencies
              uses: actions/cache@v4
              id: webview-cache
              with:
                  path: webview-ui/node_modules
                  key: ${{ runner.os }}-npm-webview-${{ hashFiles('webview-ui/package-lock.json') }}

            - name: Install root dependencies
              if: steps.root-cache.outputs.cache-hit != 'true'
              run: npm ci

            - name: Install webview-ui dependencies
              if: steps.webview-cache.outputs.cache-hit != 'true'
              run: cd webview-ui && npm ci

            # Build the extension before running tests
            - name: Build Extension
              run: npm run compile

            # Download coverage artifacts from test job
            - name: Download Coverage Reports
              uses: actions/download-artifact@v4
              with:
                  name: pr-coverage-reports
                  path: . # Download to root directory to match expected paths

            # Process coverage workflow
            - name: Process coverage workflow
              id: coverage
              run: |
                  # Extract PR number from GITHUB_REF
                  PR_NUMBER=$(echo "$GITHUB_REF" | sed -e 's/refs\/pull\///' -e 's/\/merge//')

                  # Run the coverage workflow from root directory
                  PYTHONPATH=.github/scripts python -m coverage_check process-workflow \
                    --base-branch ${{ github.base_ref }} \
                    --pr-number $PR_NUMBER \
                    --repo $GITHUB_REPOSITORY \
                    --token ${{ secrets.GITHUB_TOKEN }} \
                    --verbose
              env:
                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}