// Package router ...
//
// Description : router ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2025-02-07 18:19
package router

import (
	"fmt"
	apiDoc "git.zhangdeman.cn/gateway/api-doc"
	"git.zhangdeman.cn/zhangdeman/consts"
	"git.zhangdeman.cn/zhangdeman/gin/middleware"
	"git.zhangdeman.cn/zhangdeman/gin/middleware/request_cors"
	"github.com/gin-contrib/pprof"
	"net/http"
	"strings"

	apiDocDefine "git.zhangdeman.cn/gateway/api-doc/define"
	"github.com/gin-gonic/gin"
)

func newServerOption(port int, optionList ...SetServerOptionFunc) *serverOption {
	option := &serverOption{
		swaggerUiTheme:       apiDocDefine.SwaggerUIThemeRedocFree,
		swaggerBaseUri:       "/doc/swagger",
		globalMiddlewareList: nil,
		disableSwaggerDoc:    false,
		serverInfo: &apiDocDefine.Info{
			Description:    "这是一个微服务，提供一些必要的的数据接口功能",
			Title:          "微服务接口文档",
			TermsOfService: "",
			Contact: &apiDocDefine.Contact{
				Name:  "开发人员",
				Url:   "",
				Email: "developer@example.com",
			},
			License: &apiDocDefine.License{
				Name: consts.LicenseApache20,
				Url:  consts.LicenseUrlTable[consts.LicenseApache20],
			},
			Version: "0.0.1",
		},
		serverList: []*apiDocDefine.ServerItem{
			{
				Url:         fmt.Sprintf("http://127.0.0.1:%d", port),
				Description: "测试服务器",
				Variables:   nil,
			},
		},
	}
	for _, opt := range optionList {
		if nil == opt {
			continue
		}
		opt(option)
	}
	return option
}

// NewServer server实例
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 18:20 2025/2/7
func NewServer(port int, optionList ...SetServerOptionFunc) *server {
	if port < 80 {
		panic("port should be greater than 80")
	}
	option := newServerOption(port, optionList...)
	globalMiddlewareList := make([]gin.HandlerFunc, 0)
	if option.enableRequestInit {
		// 初始化请求中间件
		globalMiddlewareList = append(globalMiddlewareList, middleware.InitRequest())
	}
	if nil != option.loggerCfg {
		// 请求日志记录中间件
		globalMiddlewareList = append(globalMiddlewareList, middleware.LogRequest(option.loggerCfg))
	}
	if option.enableCors {
		// 跨域中间件
		globalMiddlewareList = append(globalMiddlewareList, request_cors.New(request_cors.Config{
			AllowAllOrigins: true,
		}))
	}
	if len(option.globalMiddlewareList) > 0 {
		// 自定义全局中间件追加
		globalMiddlewareList = append(globalMiddlewareList, option.globalMiddlewareList...)
	}
	r := gin.Default()

	// 注册全局中间件
	r.Use(globalMiddlewareList...)

	// 启用pprof, 注册相关路由
	if option.enablePprof {
		pprof.Register(r)
	}
	return &server{
		router:     r,
		uiInstance: apiDoc.NewSwaggerUI(option.serverInfo, option.serverList, option.swaggerUiTheme),
		port:       port,
		option:     option,
	}
}

type server struct {
	router     *gin.Engine
	port       int
	uiInstance *apiDoc.SwaggerUI
	option     *serverOption
}

// Start 启动服务
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 18:31 2025/2/7
func (s *server) Start() {
	// 注册文档
	s.uiInstance.RegisterHandler(s.router, s.option.swaggerBaseUri)
	if err := s.router.Run(fmt.Sprintf(":%d", s.port)); err != nil {
		panic("服务启动监听失败" + err.Error())
	}
}

// Router 对外访问路由实例, 不建议直接用
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 17:35 2025/2/18
func (s *server) Router() *gin.Engine {
	return s.router
}

// Group 注册接口路由
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 19:35 2025/1/27
func (s *server) Group(routerPrefix string, middlewareList []gin.HandlerFunc, cList ...any) {
	g := s.router.Group(routerPrefix)
	g.Use(middlewareList...)
	cParser := controller{}
	for _, c := range cList {
		urlTable := cParser.Parse(c)
		for _, itemUriCfg := range urlTable {
			_ = s.uiInstance.DocInstance().AddApiFromInAndOut(routerPrefix, itemUriCfg.FormDataType, itemUriCfg.ResultDataType)
			method := strings.ToUpper(itemUriCfg.RequestMethod)
			switch method {
			case http.MethodGet:
				g.GET(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodHead:
				g.HEAD(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodPost:
				g.POST(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodPut:
				g.PUT(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodPatch:
				g.PATCH(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodDelete:
				g.DELETE(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodOptions:
				g.OPTIONS(itemUriCfg.Path, RequestHandler(itemUriCfg))
			case http.MethodTrace:
				panic(`method Trace is not supported`)
			default:
				panic("method " + itemUriCfg.RequestMethod + " is not support")
			}
		}
	}
}