name: Python UV Quality

on:
  workflow_call:
    inputs:
      python_version:
        type: string
        default: "3.13"
      uv_version:
        type: string
        default: "latest"
      working_directory:
        type: string
        default: "."
      cache_dependency_path:
        type: string
        default: "uv.lock"
      env:
        description: >
          Multiline env vars, one per line: KEY=VALUE
        required: false
        type: string
        default: ""
      uv_sync_args:
        type: string
        default: "--frozen --dev"
      format_command:
        type: string
        default: "uv run ruff format --check ."
      lint_command:
        type: string
        default: "uv run ruff check ."
      typecheck_command:
        type: string
        default: "uv run mypy ."
      test_command:
        type: string
        default: "uv run pytest"
      enable_db:
        description: Enable a local database container for tests.
        type: boolean
        default: false
      db_type:
        description: Database type to start when enable_db is true.
        type: string
        default: "postgres"
    secrets:
      ssh_private_key:
        required: false
      ssh_known_hosts:
        required: false

jobs:
  quality:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    defaults:
      run:
        working-directory: ${{ inputs.working_directory }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Load env vars
        if: ${{ inputs.env != '' }}
        run: |
          while IFS= read -r line; do
            [ -z "$line" ] && continue
            case "$line" in \#*) continue;; esac
            if [[ "$line" != *=* ]]; then
              echo "Invalid env line: $line" >&2
              exit 1
            fi
            echo "$line" >> "$GITHUB_ENV"
          done <<< "${{ inputs.env }}"

      - name: Start ssh-agent
        if: ${{ secrets.ssh_private_key != '' }}
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ secrets.ssh_private_key }}

      - name: Add SSH known hosts
        if: ${{ secrets.ssh_known_hosts != '' }}
        run: |
          mkdir -p ~/.ssh
          printf '%s\n' "${{ secrets.ssh_known_hosts }}" >> ~/.ssh/known_hosts
          chmod 644 ~/.ssh/known_hosts

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ inputs.python_version }}

      - name: Install uv
        env:
          UV_VERSION: ${{ inputs.uv_version }}
        run: |
          python -m pip install --upgrade pip
          if [ -z "$UV_VERSION" ] || [ "$UV_VERSION" = "latest" ]; then
            python -m pip install uv
          else
            python -m pip install "uv==$UV_VERSION"
          fi

      - name: Cache uv downloads
        uses: actions/cache@v4
        with:
          path: ~/.cache/uv
          key: uv-${{ runner.os }}-${{ hashFiles(inputs.cache_dependency_path) }}
          restore-keys: |
            uv-${{ runner.os }}-

      - name: Sync dependencies
        run: uv sync ${{ inputs.uv_sync_args }}

      - name: Run format check
        if: ${{ inputs.format_command != '' }}
        run: ${{ inputs.format_command }}

      - name: Run lint
        if: ${{ inputs.lint_command != '' }}
        run: ${{ inputs.lint_command }}

      - name: Run typecheck
        if: ${{ inputs.typecheck_command != '' }}
        run: ${{ inputs.typecheck_command }}

      - name: Cleanup existing database containers
        if: ${{ inputs.enable_db }}
        run: |
          existing_ids="$(docker ps -aq --filter "name=^ci-postgres")"
          if [ -n "$existing_ids" ]; then
            docker rm -f $existing_ids >/dev/null 2>&1 || true
          fi

      - name: Start database
        if: ${{ inputs.enable_db }}
        run: |
          set -euo pipefail
          db_type="${{ inputs.db_type }}"
          case "$db_type" in
            postgres|postgresql)
              run_id="${GITHUB_RUN_ID:-local}"
              attempt="${GITHUB_RUN_ATTEMPT:-0}"
              container_name="ci-postgres-${run_id}-${attempt}"
              echo "DB_CONTAINER_NAME=$container_name" >> "$GITHUB_ENV"
              docker run -d --name "$container_name" \
                -e POSTGRES_USER=postgres \
                -e POSTGRES_PASSWORD=postgres \
                -e POSTGRES_DB=test_db \
                -p 5432:5432 \
                --health-cmd="pg_isready -U postgres" \
                --health-interval=10s \
                --health-timeout=5s \
                --health-retries=5 \
                postgres:16
              for i in {1..30}; do
                health="$(docker inspect --format '{{.State.Health.Status}}' "$container_name" 2>/dev/null || true)"
                case "$health" in
                  healthy)
                    break
                    ;;
                  unhealthy)
                    echo "Postgres reported unhealthy." >&2
                    docker logs "$container_name" || true
                    exit 1
                    ;;
                  "")
                    echo "Postgres health status unavailable." >&2
                    docker logs "$container_name" || true
                    exit 1
                    ;;
                esac
                sleep 1
              done
              if [ "${health:-}" != "healthy" ]; then
                echo "Postgres did not become healthy in time." >&2
                docker logs "$container_name" || true
                exit 1
              fi
              if [ -z "${DATABASE_URL:-}" ]; then
                echo "DATABASE_URL=postgresql://postgres:postgres@localhost:5432/test_db" >> "$GITHUB_ENV"
              fi
              ;;
            *)
              echo "Unsupported db_type: $db_type" >&2
              exit 1
              ;;
          esac

      - name: Run tests
        if: ${{ inputs.test_command != '' }}
        run: ${{ inputs.test_command }}

      - name: Cleanup database
        if: ${{ always() && inputs.enable_db }}
        run: |
          if [ -n "${DB_CONTAINER_NAME:-}" ]; then
            docker rm -f "$DB_CONTAINER_NAME" >/dev/null 2>&1 || true
          fi