#!/bin/bash
set -eo pipefail

# 导入环境变量
source /home/pn/.env

# 错误处理函数
handle_error() {
    echo "错误发生在第 $1 行"
    exit 1
}
trap 'handle_error $LINENO' ERR

# 超时处理函数
timeout_handler() {
    echo "操作超时"
    exit 1
}

# 等待服务就绪的通用函数
wait_for_service() {
    local service=$1
    local host=$2
    local port=$3
    local timeout=${4:-$WAIT_TIMEOUT}
    
    echo "等待 $service 就绪..."
    local end=$((SECONDS + timeout))
    
    while [ $SECONDS -lt $end ]; do
        if nc -z "$host" "$port" >/dev/null 2>&1; then
            echo "$service 已就绪"
            return 0
        fi
        echo "尝试连接 $service at $host:$port..."
        sleep 1
    done
    
    echo "$service 启动超时"
    exit 1
}

# 启动 Redis 服务
start_redis() {
    echo "Starting Redis server..."
    redis-server --daemonize yes
    sleep 1
    if ! redis-cli ping > /dev/null 2>&1; then
        echo "Failed to start Redis server"
        exit 1
    fi
    
    # 设置 Redis 配置
    redis-cli config set maxmemory 512mb
    redis-cli config set maxmemory-policy allkeys-lru
    
    echo "Redis server started successfully"
}

# 启动 Qdrant 服务
start_qdrant() {
    echo "Starting Qdrant server..."
    mkdir -p /home/pn/.n8n/qdrant
    qdrant > /home/pn/.n8n/qdrant/qdrant.log 2>&1 &
    
    # 等待 Qdrant 启动
    local timeout=30
    local end=$((SECONDS + timeout))
    
    while [ $SECONDS -lt $end ]; do
        if curl -s http://localhost:6333/health >/dev/null; then
            echo "Qdrant server started successfully"
            return 0
        fi
        sleep 1
    done
    
    echo "Failed to start Qdrant server"
    exit 1
}

# 检查服务状态
check_services() {
    echo "检查服务状态..."
    
    # 检查 Redis
    echo "Redis 状态："
    redis-cli info | grep 'used_memory\|connected_clients\|total_connections_received'
    
    # 检查 Redis 队列
    echo "Redis 队列状态："
    redis-cli keys "${N8N_QUEUE_BULL_REDIS_PREFIX}*"
    
    # 检查 Qdrant
    echo "Qdrant 状态："
    curl -s http://localhost:6333/metrics
}

# 主流程
main() {
    current_time=$(date +"%Y-%m-%d %H:%M:%S")
    echo "Starting services at $current_time"
    
    # 输出配置信息
    echo "Database Configuration:"
    echo "Host: ${DB_POSTGRESDB_HOST}"
    echo "Port: ${DB_POSTGRESDB_PORT}"
    echo "User: ${DB_POSTGRESDB_USER}"
    echo "Database: ${DB_POSTGRESDB_DATABASE}"
    echo "Type: ${DB_TYPE}"
    
    # 启动服务
    wait_for_service "PostgreSQL" "${DB_POSTGRESDB_HOST}" "${DB_POSTGRESDB_PORT}"
    start_redis
    start_qdrant
    check_services
    
    # 设置 N8N 环境变量
    source /home/pn/n8n/config/n8n_env.sh
    
    echo "Starting n8n..."
    exec n8n start
}

# 执行主流程
main "$@"