# this workflow verifies the generated code is up to date and valid

name: Verify
on:
  pull_request:
    branches:
      - master
  push:
    branches:
      - master


jobs:
  # setup is now handled by a composite action used by downstream jobs to keep
  # the workflow DRY. The composite action performs checkout, cache restore and
  # toolchain setup.

  verify-generated-code:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          
      - name: Setup Rust, checkout and restore caches
        uses: ./.github/actions/setup-rust

      - name: generate entities from migration files
        run: |
          cd apps/cli
          cargo run -- db:migrate_and_generate --output-path ../../public/database/src/generated/entities
      - name: Check for uncommitted changes in /generated/
        run: |
          if [[ -n $(git status --porcelain | grep '^ M .*\/generated\/') ]]; then
            echo "Generated code is not up to date. Please run the code generation locally and commit the changes."
            git status --porcelain | grep '^ M .*\/generated\/'
            exit 1
          else
            echo "Generated code is up to date."
          fi

  verify-openapi-spec:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Check whether apps/api/src/routes changed
        id: check_changes
        run: |
          if [ "${{ github.event_name }}" = "pull_request" ]; then
            BASE_SHA=${{ github.event.pull_request.base.sha }}
            HEAD_SHA=${{ github.event.pull_request.head.sha }}
          else
            BASE_SHA=${{ github.event.before }}
            HEAD_SHA=${{ github.sha }}
          fi

          # Provide safe fallbacks when GitHub context values are empty (e.g. when using act)
          if [ -z "$HEAD_SHA" ]; then
            HEAD_SHA=$(git rev-parse --verify HEAD 2>/dev/null || echo "")
          fi

          if [ -z "$BASE_SHA" ]; then
            # Try the parent of HEAD, fall back to HEAD if unavailable
            PREV=$(git rev-parse --verify "${HEAD_SHA}^" 2>/dev/null || true)
            if [ -n "$PREV" ]; then
              BASE_SHA=$PREV
            else
              BASE_SHA=$HEAD_SHA
            fi
          fi

          echo "Comparing $BASE_SHA..$HEAD_SHA"
          CHANGED_FILES=$(git diff --name-only "$BASE_SHA" "$HEAD_SHA" || true)
          echo "$CHANGED_FILES"

          echo "$CHANGED_FILES" | grep -E '^(apps/api/src/routes/?|apps/api/swagger.json)' >/dev/null 2>&1 && echo "changed=true" >> $GITHUB_OUTPUT || echo "changed=false" >> $GITHUB_OUTPUT

      - name: Setup Rust, checkout and restore caches
        if: steps.check_changes.outputs.changed == 'true'
        uses: ./.github/actions/setup-rust
      
      - name: Generate dummy frontend build (to satisfy dependencies)
        if: steps.check_changes.outputs.changed == 'true'
        run: |
          mkdir -p apps/frontend/build/client
          echo "dummy file" > apps/frontend/build/client/dummy.txt

      - name: Generate OpenAPI spec
        if: steps.check_changes.outputs.changed == 'true'
        run: |
          cd apps/api
          cargo run -- generate:openapi --output-path ./swagger.json
      
      - name: Check for uncommitted changes in swagger.json
        if: steps.check_changes.outputs.changed == 'true'
        run: |
          if [[ -n $(git status --porcelain | grep '^ M apps/api/swagger.json') ]]; then
            echo "OpenAPI spec is not up to date. Please run the OpenAPI generation locally and commit the changes."
            git status --porcelain | grep '^ M apps/api/swagger.json'
            exit 1
          else
            echo "OpenAPI spec is up to date."
          fi

      - name: Skip OpenAPI generation (no relevant changes)
        if: steps.check_changes.outputs.changed == 'false'
        run: echo "No changes in apps/api/src/routes/ nor apps/api/swagger.json, skipping OpenAPI generation verification."