package http

import (
	"context"
	"fmt"
	"net/http"
	"reflect"
	"regexp"
	"strings"

	_ "gitea.com/red-future/common/consul"
	"gitea.com/red-future/common/jaeger"
	"gitea.com/red-future/common/utils"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/net/gclient"
	"github.com/gogf/gf/v2/net/ghttp"
	"github.com/gogf/gf/v2/net/gsvc"
	"github.com/gogf/gf/v2/os/gtime"
	"github.com/gogf/gf/v2/util/gconv"
)

var (
	Httpserver           = g.Server()
	Httpclient           = g.Client()
	filterPaths          = map[string]bool{"/": true, "/*": true, "/api.json": true}
	legalRegisteredPaths = make(map[string]bool)
)

func init() {
	err := gtime.SetTimeZone("Asia/Shanghai")
	if err != nil {
		panic("设置时区失败")
	}
	//s.Use(common.Cors) //中间件验证
	//s.EnablePProf()           //启用性能分析
	//Httpserver.BindMiddlewareDefault(validateFilterPathMiddleware)
	Httpserver.SetOpenApiPath("/api.json")
	Httpserver.SetDumpRouterMap(true) //关闭打印路由注册信息
	Httpserver.BindMiddlewareDefault(ghttp.MiddlewareHandlerResponse)
	Httpclient.SetDiscovery(gsvc.GetRegistry())
}

func validateFilterPathMiddleware(r *ghttp.Request) {
	path := r.URL.Path
	if filterPaths[path] && !legalRegisteredPaths[path] {
		routes := Httpserver.GetRoutes()
		for _, route := range routes {
			if filterPaths[route.Handler.Router.Uri] && route.Handler.Router.Uri != "/api.json" {
				g.Log().Errorf(r.GetCtx(), "路径 %s 中间件 %s 必须通过 SkipMiddleware 注册", route.Handler.Router.Uri, route.Handler.Name)
			}
		}
		r.ExitAll()
	}
	r.Middleware.Next()
}

func SkipMiddleware(h func(r *ghttp.Request), path string) (handler ghttp.HandlerFunc) {
	if filterPaths[path] {
		legalRegisteredPaths[path] = true
	}
	return func(r *ghttp.Request) {
		if filterPaths[path] {
			r.Middleware.Next()
			return
		}
		h(r)
	}
}

func RouteRegister(controllers []interface{}) {
	//Httpserver.Group("/log", func(group *ghttp.RouterGroup) {
	//	group.Middleware(jaeger.NewTracer)
	//	group.Bind(controller.OperationLog)
	//})
	re := regexp.MustCompile("[A-Z]")
	for _, t := range controllers {
		sName := reflect.ValueOf(t).Elem().Type().Name()
		convertedStr := re.ReplaceAllStringFunc(sName, func(s string) string {
			return fmt.Sprintf("/%s", strings.ToLower(s))
		})
		Httpserver.Group(convertedStr, func(group *ghttp.RouterGroup) {
			group.Middleware(jaeger.NewTracer)
			group.Bind(t)
		})
	}
	go Httpserver.Run()
}

// doRequest 统一HTTP请求处理（DELETE用ContentJson发送body，gconv.Struct增加err检查）
func doRequest(ctx context.Context, method string, url string, headers map[string]string, target any, data ...any) (err error) {
	err = utils.ValidStructPtr(target)
	if err != nil {
		return
	}
	client := Httpclient.Clone()

	// POST/PUT/DELETE请求都需要显式用ContentJson序列化body
	if (method == http.MethodPost || method == http.MethodPut || method == http.MethodDelete) && len(data) > 0 {
		client = client.ContentJson()
	}

	// 最后设置headers，确保不会被ContentJson覆盖
	if len(headers) > 0 {
		client.SetHeaderMap(headers)
	} else {
		client.SetHeader("Authorization", g.RequestFromCtx(ctx).GetHeader("Authorization"))
	}

	// 修复：避免data...展开导致的双重包装问题
	// 当只有一个元素时，直接传递该元素，避免被包装成数组
	var response *gclient.Response
	// 对于GET请求，将参数转换为map
	if method == http.MethodGet && len(data) > 0 && len(data)%2 == 0 {
		// 构建query参数map
		queryParams := make(map[string]string)
		for i := 0; i < len(data); i += 2 {
			if key, ok := data[i].(string); ok && i+1 < len(data) {
				queryParams[key] = gconv.String(data[i+1])
			}
		}
		g.Log().Infof(ctx, "[HTTP] GET请求构建的query参数: %+v", queryParams)
		response, err = client.DoRequest(ctx, method, url, queryParams)
	} else if len(data) == 1 {
		response, err = client.DoRequest(ctx, method, url, data[0])
	} else {
		response, err = client.DoRequest(ctx, method, url, data...)
	}
	if err != nil {
		return
	}
	defer response.Close()
	//result := response.ReadAll()
	//
	//// 统一处理内部API响应格式：{code:200,message:"",data:{...}}
	//resultStrut := &ghttp.DefaultHandlerResponse{}
	//
	//if err = gconv.Struct(result, &resultStrut); err != nil { // 修复：增加err检查
	//	return errors.New("响应解析失败: " + err.Error())
	//}
	//
	//// 添加调试日志：打印解析后的结构
	//g.Log().Debugf(ctx, "[HTTP] 解析后结构: Code=%d, Message=%s, Data类型=%T, Data值=%+v",
	//	resultStrut.Code, resultStrut.Message, resultStrut.Data, resultStrut.Data)
	//
	//if resultStrut.Code == 200 || resultStrut.Code == 0 {
	//	if err = gconv.Struct(resultStrut.Data, target); err != nil { // 修复：增加err检查
	//		return errors.New("数据解析失败: " + err.Error())
	//	}
	//	// 添加调试日志：打印最终的target
	//	g.Log().Debugf(ctx, "[HTTP] 最终target: %+v", target)
	//} else {
	//	err = errors.New(resultStrut.Message)
	//}
	return
}
func Get(ctx context.Context, url string, headers map[string]string, target any, data ...any) (err error) {
	err = doRequest(ctx, http.MethodGet, url, headers, target, data...)
	return
}
func Post(ctx context.Context, url string, headers map[string]string, target any, data ...any) (err error) {
	err = doRequest(ctx, http.MethodPost, url, headers, target, data...)
	return
}
func Put(ctx context.Context, url string, headers map[string]string, target any, data ...any) (err error) {
	err = doRequest(ctx, http.MethodPut, url, headers, target, data...)
	return
}
func Delete(ctx context.Context, url string, headers map[string]string, target any, data ...any) (err error) {
	err = doRequest(ctx, http.MethodDelete, url, headers, target, data...)
	return
}