name: PR Diff Coverage

on:
  pull_request:
    branches: [main]

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

jobs:
  detect-changes:
    name: Detect changed packages
    runs-on: ubuntu-latest
    outputs:
      core: ${{ steps.filter.outputs.core }}
      cli: ${{ steps.filter.outputs.cli }}
      web: ${{ steps.filter.outputs.web }}
    steps:
      - uses: actions/checkout@v4
      - uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            core:
              - 'packages/core/**'
            cli:
              - 'packages/cli/**'
            web:
              - 'packages/web/**'

  diff-coverage:
    name: Diff Coverage (80% on changed code)
    needs: detect-changes
    if: needs.detect-changes.outputs.core == 'true' || needs.detect-changes.outputs.cli == 'true' || needs.detect-changes.outputs.web == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: pnpm/action-setup@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: pnpm

      - uses: actions/setup-python@v5
        with:
          python-version: "3.x"

      - name: Install diff-cover
        run: pip install diff-cover

      - name: Install tmux
        if: needs.detect-changes.outputs.web == 'true'
        run: sudo apt-get update && sudo apt-get install -y tmux

      - name: Start tmux server
        if: needs.detect-changes.outputs.web == 'true'
        run: tmux start-server

      - run: pnpm install --frozen-lockfile
      - run: pnpm -r --filter '!@composio/ao-web' build

      - name: Core tests with coverage
        if: needs.detect-changes.outputs.core == 'true'
        run: pnpm --filter @composio/ao-core exec vitest run --coverage

      - name: CLI tests with coverage
        if: needs.detect-changes.outputs.cli == 'true'
        run: pnpm --filter @composio/ao-cli exec vitest run --coverage

      - name: Web tests with coverage
        if: needs.detect-changes.outputs.web == 'true'
        run: pnpm --filter @composio/ao-web exec vitest run --coverage

      - name: Prepare and merge lcov reports
        run: |
          mkdir -p combined-coverage
          touch combined-coverage/lcov.info

          if [ -f packages/core/coverage/lcov.info ]; then
            sed 's|^SF:|SF:packages/core/|' packages/core/coverage/lcov.info >> combined-coverage/lcov.info
          fi
          if [ -f packages/cli/coverage/lcov.info ]; then
            sed 's|^SF:|SF:packages/cli/|' packages/cli/coverage/lcov.info >> combined-coverage/lcov.info
          fi
          if [ -f packages/web/coverage/lcov.info ]; then
            sed 's|^SF:|SF:packages/web/|' packages/web/coverage/lcov.info >> combined-coverage/lcov.info
          fi

      - name: Check diff coverage (80% on changed lines)
        run: |
          diff-cover combined-coverage/lcov.info \
            --compare-branch=origin/${{ github.base_ref }} \
            --fail-under=80 \
            --diff-range-notation='...'