#!/bin/bash

# 后端服务启动脚本

set -e

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

echo -e "${GREEN}=== 启动后端服务 ===${NC}"

# 加载环境变量
if [ -f "../.env.local" ]; then
    echo -e "${YELLOW}加载配置...${NC}"
    export $(cat ../.env.local | grep -v '^#' | xargs)
fi

# 数据库配置
DB_HOST=${DB_HOST:-127.0.0.1}
DB_PORT=${DB_PORT:-3306}
DB_USER=${DB_USER:-root}
DB_PASSWORD=${DB_PASSWORD:-}

# 构建数据库连接字符串
if [ -z "$DB_PASSWORD" ]; then
    SQL_CONNECTION="mysql+pymysql://${DB_USER}@${DB_HOST}:${DB_PORT}/yunioncloud?charset=utf8mb4"
else
    SQL_CONNECTION="mysql+pymysql://${DB_USER}:${DB_PASSWORD}@${DB_HOST}:${DB_PORT}/yunioncloud?charset=utf8mb4"
fi

echo "数据库连接: ${DB_USER}@${DB_HOST}:${DB_PORT}/yunioncloud"

# 创建日志目录
mkdir -p logs

# 检查二进制文件是否存在
check_binary() {
    local service=$1
    if [ ! -f "_output/bin/${service}" ]; then
        echo -e "${YELLOW}${service} 未编译，开始编译...${NC}"
        # 忽略 git 错误，只关注编译结果
        make cmd/${service} 2>&1 | grep -v "fatal: " | grep -v "error: malformed" || true
    fi
}

# 启动服务
start_service() {
    local service=$1
    local port=$2
    local extra_args=$3
    
    echo -e "${YELLOW}启动 ${service} (端口 ${port})...${NC}"
    
    ./_output/bin/${service} \
        --config /dev/null \
        --sql-connection "$SQL_CONNECTION" \
        --port ${port} \
        --enable-ssl=false \
        ${extra_args} \
        > logs/${service}.log 2>&1 &
    
    echo $! > logs/${service}.pid
    echo -e "${GREEN}✓ ${service} 已启动 (PID: $!)${NC}"
}

# 停止已运行的服务
stop_existing() {
    echo -e "${YELLOW}检查并停止已运行的服务...${NC}"
    for service in keystone region glance apigateway; do
        if [ -f "logs/${service}.pid" ]; then
            pid=$(cat logs/${service}.pid)
            if ps -p $pid > /dev/null 2>&1; then
                echo "停止 ${service} (PID: ${pid})"
                kill $pid 2>/dev/null || true
            fi
            rm logs/${service}.pid
        fi
    done
    sleep 1
}

# 主流程
main() {
    stop_existing
    
    # 检查并编译服务
    check_binary keystone
    check_binary region
    check_binary glance
    check_binary apigateway
    
    # 启动服务
    start_service keystone 35357 ""
    sleep 2
    
    start_service region 30889 "--auth-url http://127.0.0.1:35357/v3"
    sleep 2
    
    start_service glance 9292 "--auth-url http://127.0.0.1:35357/v3"
    sleep 2
    
    start_service apigateway 3000 "--auth-url http://127.0.0.1:35357/v3"
    sleep 1
    
    echo ""
    echo -e "${GREEN}=== 后端服务启动成功 ===${NC}"
    echo ""
    echo "服务地址:"
    echo "  Keystone (认证):  http://localhost:35357"
    echo "  Region (计算):    http://localhost:30889"
    echo "  Glance (镜像):    http://localhost:9292"
    echo "  APIGateway:       http://localhost:3000"
    echo ""
    echo "日志目录: backend/logs/"
    echo "查看日志: tail -f logs/*.log"
    echo "停止服务: ./stop-backend.sh"
    echo ""
}

main