package main

import (
	"encoding/json"
	"log"
	"net/http"
	"strings"
	"time"

	"git.x2erp.com/qdy/go-base/config"
	"git.x2erp.com/qdy/go-base/logger"
	"git.x2erp.com/qdy/go-base/myservice"
	"git.x2erp.com/qdy/go-base/types"
	"git.x2erp.com/qdy/go-db/factory/database"
	"git.x2erp.com/qdy/go-svc-worker/service"
	"go-micro.dev/v4/metadata"
)

// 定义业务服务
type DBFactory struct {
	dbFactory *database.DBFactory
}

// 配置
var (
	cfg            config.IConfig
	serviceName    string
	serviceVersion string
)

func main() {

	// ========== 第一阶段：强制写入文件的启动日志 ==========
	// 这一步确保即使配置加载失败，也有日志记录
	if err := logger.InitBootLog("svc-worker"); err != nil {
		// 连启动日志都初始化失败，只能输出到控制台
		log.Fatal("无法初始化启动日志: ", err)
	}

	logger.BootLog("开始加载配置...")
	cfg, err := config.GetConfig()
	if err != nil {
		log.Fatalf("Failed to create RabbitMQ factory: %v", err)
	}

	serviceConfig := cfg.GetService()
	microConfig := cfg.GetMicro()
	serviceName = serviceConfig.ServiceName
	serviceVersion = serviceConfig.ServiceVersion

	log.Printf("serviceName: %s", serviceName)
	log.Printf("Port: %d", serviceConfig.Port)
	log.Printf("Consul: %s", microConfig.RegistryAddress)

	// 2. 初始化数据库
	dbFactory, err := database.GetDBFactory()
	if err != nil {
		log.Fatal("数据库连接失败:", err)
	}
	defer func() {
		if err := dbFactory.Close(); err != nil {
			logger.Info("数据库关闭错误: %v", err)
		}
	}()

	// 3. 创建服务实例
	dbfactory := &DBFactory{dbFactory: dbFactory}

	// 4. 使用 micro.Start 启动服务
	webService := myservice.Start(cfg)

	// 7. 注册HTTP路由
	webService.Handle("/", http.HandlerFunc(rootHandler))
	webService.Handle("/health", http.HandlerFunc(dbfactory.healthHandler))
	webService.Handle("/info", http.HandlerFunc(infoHandler))
	webService.Handle("/api/data/agent/to/doris", authMiddleware(http.HandlerFunc(dbfactory.agentToDorisHandler)))

	logger.InitRuntimeLogger("order-service", cfg.GetLog())

	log.Println("日志系统初始化完成")

	//关闭-启动日志输出文件功能
	logger.CloseBootLogger()

	if err := webService.Run(); err != nil {
		log.Fatal("服务运行失败:", err)
	}

}

// 根处理器
func rootHandler(w http.ResponseWriter, r *http.Request) {
	if r.URL.Path != "/" {
		http.NotFound(w, r)
		return
	}
	respondJSON(w, http.StatusOK, map[string]string{
		"service": serviceName,
		"status":  "running",
		"mode":    "http-microservice",
	})
}

// 健康检查处理器
func (s *DBFactory) healthHandler(w http.ResponseWriter, r *http.Request) {
	if err := s.dbFactory.TestConnection(s.dbFactory.GetDBType()); err != nil {
		respondJSON(w, http.StatusServiceUnavailable, map[string]string{
			"status": "down",
			"error":  err.Error(),
		})
		return
	}
	respondJSON(w, http.StatusOK, map[string]string{
		"status": "up",
		"time":   time.Now().Format(time.RFC3339),
	})
}

// 信息处理器
func infoHandler(w http.ResponseWriter, r *http.Request) {
	respondJSON(w, http.StatusOK, map[string]interface{}{
		"service": serviceName,
		"version": serviceVersion,
		"api": map[string]string{
			"POST /api/data/agent/to/doris": "同步数据到Doris",
			"GET /health":                   "健康检查",
			"GET /info":                     "服务信息",
			"GET /":                         "根路径",
		},
		"features": []string{
			"服务发现（Consul）",
			"负载均衡",
			"健康检查",
			"HTTP API网关",
		},
	})
}

// AgentToDoris处理器
func (s *DBFactory) agentToDorisHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method != "POST" {
		respondJSON(w, http.StatusMethodNotAllowed, types.QueryResult{
			Error:   "只支持POST请求",
			Success: false,
		})
		return
	}

	// 解析请求
	var requestData types.QueryRequest
	if err := json.NewDecoder(r.Body).Decode(&requestData); err != nil {
		respondJSON(w, http.StatusBadRequest, map[string]string{
			"error": "无效的JSON数据",
		})
		return
	}

	// 处理业务逻辑
	result := service.ServiceAgentToDoris(s.dbFactory, requestData)

	respondJSON(w, http.StatusOK, result)
}

// 认证中间件
func authMiddleware(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

		// JWT令牌认证
		token := r.Header.Get("Authorization")
		if token != "" && strings.HasPrefix(token, "Bearer ") {
			token = token[7:]
		}

		// 双重认证：API密钥或JWT
		if token == "" {
			respondJSON(w, http.StatusUnauthorized, map[string]string{
				"error": "需要API密钥或Bearer令牌",
			})
			return
		}

		// 验证JWT令牌
		if token != "" && !isValidJWT(token) {
			respondJSON(w, http.StatusUnauthorized, map[string]string{
				"error": "无效的访问令牌",
			})
			return
		}

		// 将认证信息添加到上下文
		ctx := r.Context()
		if token != "" {
			ctx = metadata.Set(ctx, "Authorization", "Bearer "+token)
		}

		next.ServeHTTP(w, r.WithContext(ctx))
	})
}

// JWT验证
func isValidJWT(token string) bool {
	// TODO: 实现JWT验证逻辑
	// 可以使用 github.com/golang-jwt/jwt/v5
	// 临时实现：检查token是否有效格式
	//if len(token) < 10 {
	//	return false
	//	}
	return true // 临时返回true，实际需要验证签名和过期时间
}

// JSON响应辅助函数
func respondJSON(w http.ResponseWriter, status int, data interface{}) {
	w.Header().Set("Content-Type", "application/json")
	w.Header().Set("X-Service-Name", serviceName)
	w.Header().Set("X-Service-Version", serviceVersion)
	w.WriteHeader(status)

	if err := json.NewEncoder(w).Encode(data); err != nil {
		log.Printf("JSON编码错误: %v", err)
	}
}