---
# yaml-language-server: $schema=https://www.schemastore.org/github-workflow.json
name: CI

on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]
  merge_group:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions: read-all

jobs:
  test:
    name: 🧪 Test Suite
    runs-on: ubuntu-latest
    timeout-minutes: 15

    strategy:
      matrix:
        node-version: [22, 24]
      fail-fast: false

    steps:
      - name: Checkout Repository
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@7c12f8017d5436eb855f1ed4399f037a36fbd9e8 # v5.2.1
        with:
          node-version: ${{ matrix.node-version }}

      - name: Cache Node.js dependencies
        uses: actions/cache@dfa6ed13c88fe79b56c4ffc79a42db2e8d2b15a5 # v4.2.0
        id: cache-npm
        with:
          path: ~/.npm
          key: ${{ runner.os }}-node-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-node-${{ matrix.node-version }}-
            ${{ runner.os }}-node-

      - name: Install Dependencies
        run: npm ci || { echo "❌ npm install failed"; npm install; }
        shell: bash

      - name: Cache Tree-sitter CLI
        uses: actions/cache@dfa6ed13c88fe79b56c4ffc79a42db2e8d2b15a5 # v4.2.0
        id: cache-tree-sitter
        with:
          path: ~/.npm/_npx
          key: ${{ runner.os }}-tree-sitter-cli-${{ hashFiles('package.json') }}

      - name: Install Tree-sitter CLI
        run: npm install -g tree-sitter-cli
        shell: bash

      - name: Cache Generated Grammar
        uses: actions/cache@dfa6ed13c88fe79b56c4ffc79a42db2e8d2b15a5 # v4.2.0
        id: cache-grammar
        with:
          path: |
            src/parser.c
            src/tree_sitter/
            binding.gyp
          key: ${{ runner.os }}-grammar-${{ hashFiles('grammar.js', 'package.json') }}

      - name: Generate Grammar
        if: steps.cache-grammar.outputs.cache-hit != 'true'
        run: npm run generate
        shell: bash

      - name: Cache Built Parser
        uses: actions/cache@dfa6ed13c88fe79b56c4ffc79a42db2e8d2b15a5 # v4.2.0
        id: cache-parser
        with:
          path: |
            build/
            node_modules/
          key: ${{ runner.os }}-parser-${{ matrix.node-version }}-${{ hashFiles('src/parser.c', 'binding.gyp', 'package.json') }}

      - name: Build Parser
        if: steps.cache-parser.outputs.cache-hit != 'true'
        run: npm run build
        shell: bash

      - name: Test Parser with Sample Code
        run: |
          cat << 'EOF' > test_sample.shellspec
          #!/usr/bin/env shellspec

          Describe 'Calculator'
            Include ./lib/calculator.sh

            Before 'setup_calculator'
            After 'cleanup_calculator'

            Context 'when adding numbers'
              It 'adds two positive numbers'
                When call add 2 3
                The output should eq 5
              End

              It 'handles zero'
                When call add 0 5
                The output should eq 5
              End
            End

            Context 'when input is invalid'
              Skip if "validation not implemented" ! command -v validate

              It 'handles empty input'
                When call add "" ""
                The status should be failure
              End
            End
          End

          It 'works without describe block'
            When call echo "test"
            The output should eq "test"
          End
          EOF

          tree-sitter parse --language=shellspec test_sample.shellspec --quiet || {
            echo "❌ Parser failed on sample ShellSpec code"
            exit 1
          }
          echo "✅ Parser successfully handled sample code"
        shell: bash

  lint:
    name: 🧹 Code Quality
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout Repository
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

      - name: Setup Node.js 24
        uses: actions/setup-node@7c12f8017d5436eb855f1ed4399f037a36fbd9e8 # v5.2.1
        with:
          node-version: 24

      - name: Cache Node.js dependencies
        uses: actions/cache@dfa6ed13c88fe79b56c4ffc79a42db2e8d2b15a5 # v4.2.0
        with:
          path: ~/.npm
          key: ${{ runner.os }}-node-24-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-node-24-
            ${{ runner.os }}-node-

      - name: Install Dependencies
        run: npm ci || { echo "❌ npm install failed"; npm install; }
        shell: bash

      - name: 🧹 Run Linter
        uses: ivuorinen/actions/pr-lint@22e6add79fabcca4bf5761452a51e4fa0207e155 # 25.9.8

  coverage:
    name: 📊 Test Coverage
    runs-on: ubuntu-latest
    timeout-minutes: 15
    needs: test

    steps:
      - name: Checkout Repository
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

      - name: Setup Node.js 24
        uses: actions/setup-node@7c12f8017d5436eb855f1ed4399f037a36fbd9e8 # v5.2.1
        with:
          node-version: 24

      - name: Cache Node.js dependencies
        uses: actions/cache@dfa6ed13c88fe79b56c4ffc79a42db2e8d2b15a5 # v4.2.0
        with:
          path: ~/.npm
          key: ${{ runner.os }}-node-24-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-node-24-
            ${{ runner.os }}-node-

      - name: Install Dependencies
        run: npm ci || { echo "❌ npm install failed"; npm install; }

      - name: Test Coverage Analysis
        id: coverage
        run: |
          echo "## Test Coverage Report" > coverage_report.md
          echo "" >> coverage_report.md

          # Run tests and capture output with exit code
          set +e  # Don't exit on test failure
          TEST_OUTPUT=$(npm test 2>&1)
          TEST_EXIT=$?
          set -e  # Re-enable exit on error

          TOTAL_TESTS=$(echo "$TEST_OUTPUT" | grep -cE "^\s+[0-9]+\." || echo "0")
          PASSING_TESTS=$(echo "$TEST_OUTPUT" | grep -cE "^\s+[0-9]+\. ✓" || echo "0")
          FAILING_TESTS=$(echo "$TEST_OUTPUT" | grep -cE "^\s+[0-9]+\. ✗" || echo "0")

          {
            echo "- **Total Tests:** $TOTAL_TESTS"
            echo "- **Passing:** $PASSING_TESTS ✅"
            echo "- **Failing:** $FAILING_TESTS ❌"
          } >> coverage_report.md

          if [ "$TOTAL_TESTS" -gt 0 ]; then
            COVERAGE_PERCENT=$(( (PASSING_TESTS * 100) / TOTAL_TESTS ))
            echo "- **Coverage:** $COVERAGE_PERCENT%" >> coverage_report.md
          else
            COVERAGE_PERCENT=0
          fi

          {
            echo ""
            echo "### Test Files"
          } >> coverage_report.md
          echo "$TEST_OUTPUT" | grep -E "^[[:space:]]+[A-Za-z0-9._/\\-]+:" | sed 's/^/- /' >> coverage_report.md

          cat coverage_report.md

          # Set outputs
          {
            echo "total-tests=$TOTAL_TESTS"
            echo "passing-tests=$PASSING_TESTS"
            echo "coverage-percent=$COVERAGE_PERCENT"
          } >> "$GITHUB_OUTPUT"

          # Validate test coverage requirements
          if [ "${TOTAL_TESTS:-0}" -lt 55 ]; then
            echo "❌ Expected at least 55 tests, found ${TOTAL_TESTS:-0}"
            exit 1
          fi

          if [ "${FAILING_TESTS:-0}" -gt 0 ] || [ "$TEST_EXIT" -ne 0 ]; then
            echo "❌ Found ${FAILING_TESTS:-0} failing tests or test runner failed (exit code: $TEST_EXIT)"
            exit 1
          fi

          echo "✅ Test coverage is acceptable: $PASSING_TESTS/$TOTAL_TESTS tests passing ($COVERAGE_PERCENT%)"
        shell: bash