#!/usr/bin/env bash
set -eu

# Real Estate Crawler - Development Server
# Usage:
#   ./start.sh           - Start with Docker (recommended)
#   ./start.sh --local   - Start locally (requires Poetry and dependencies)
#   ./start.sh --help    - Show help

show_help() {
    echo "Real Estate Crawler - Development Server"
    echo ""
    echo "Usage: ./start.sh [OPTIONS]"
    echo ""
    echo "Options:"
    echo "  (default)     Start all services with Docker Compose"
    echo "  --local       Run locally with Poetry (requires local deps)"
    echo "  --build       Rebuild Docker images before starting"
    echo "  --down        Stop and remove all containers"
    echo "  --logs        Follow logs from all services"
    echo "  --help        Show this help message"
    echo ""
    echo "Examples:"
    echo "  ./start.sh              # Start with Docker"
    echo "  ./start.sh --build      # Rebuild and start"
    echo "  ./start.sh --local      # Run locally with Poetry"
}

start_docker() {
    local build_flag=""
    if [[ "${1:-}" == "--build" ]]; then
        build_flag="--build"
    fi

    echo "🐳 Starting services with Docker Compose..."
    echo ""

    # Check if docker/podman is available
    if command -v docker &> /dev/null; then
        COMPOSE_CMD="docker compose"
    elif command -v podman-compose &> /dev/null; then
        COMPOSE_CMD="podman-compose"
    else
        echo "❌ Error: Neither docker nor podman-compose found."
        echo "   Install Docker: https://docs.docker.com/get-docker/"
        echo "   Or run locally: ./start.sh --local"
        exit 1
    fi

    $COMPOSE_CMD up $build_flag
}

stop_docker() {
    echo "🛑 Stopping all containers..."
    if command -v docker &> /dev/null; then
        docker compose down
    elif command -v podman-compose &> /dev/null; then
        podman-compose down
    fi
}

show_logs() {
    if command -v docker &> /dev/null; then
        docker compose logs -f
    elif command -v podman-compose &> /dev/null; then
        podman-compose logs -f
    fi
}

start_local() {
    echo "🛠️  Starting locally with Poetry..."
    echo ""

    # Check Poetry is available
    if ! command -v poetry &> /dev/null; then
        echo "❌ Error: Poetry not found."
        echo "   Install: curl -sSL https://install.python-poetry.org | python3 -"
        echo "   Or use Docker: ./start.sh"
        exit 1
    fi

    # Source .env if it exists
    if [[ -f .env ]]; then
        set -a
        source .env
        set +a
    fi

    ENV_MODE=${ENV:-"dev"}

    # Ensure Redis is running
    if ! nc -z localhost 6379 2>/dev/null; then
        echo "📦 Starting Redis container..."
        docker run -d --rm --name rec-redis-local -p 6379:6379 redis:latest || true
        sleep 2
    fi

    echo "✅ Redis OK"

    # Test celery connection
    poetry run python celery_app.py

    # Start Celery worker in background
    echo "🔧 Starting Celery worker..."
    if [[ "$ENV_MODE" == "dev" ]]; then
        poetry run celery -A celery_app worker --loglevel=info &
    else
        poetry run alembic upgrade head
        poetry run celery -A celery_app worker --beat --loglevel=info &
    fi
    CELERY_PID=$!

    cleanup() {
        echo ""
        echo "🛑 Stopping Celery worker (PID: $CELERY_PID)..."
        kill "$CELERY_PID" 2>/dev/null || true
        wait "$CELERY_PID" 2>/dev/null || true
    }
    trap cleanup EXIT SIGINT SIGTERM

    # Start uvicorn
    echo "🚀 Starting API server on http://localhost:5001"
    echo ""
    poetry run uvicorn api.app:app --host 0.0.0.0 --port 5001 --reload
}

# Parse arguments
case "${1:-}" in
    --help|-h)
        show_help
        ;;
    --local)
        start_local
        ;;
    --down)
        stop_docker
        ;;
    --logs)
        show_logs
        ;;
    --build)
        start_docker --build
        ;;
    "")
        start_docker
        ;;
    *)
        echo "❌ Unknown option: $1"
        echo ""
        show_help
        exit 1
        ;;
esac