package router

import (
	"ArmedPolice/app/api"
	"ArmedPolice/config"
	"ArmedPolice/router/rate"
	"io"
	"net/http"
	"os"
	"time"

	"github.com/gin-gonic/gin"
)

type Router struct {
	*Option
	handler *gin.Engine
}

type (
	Option struct {
		Mode   string
		IsCors bool
		*RateLimitConfig
	}
	// RateLimitConfig 限流配置
	RateLimitConfig struct {
		IsRate   bool `json:"is_rate"`
		Limit    int  `json:"limit"`
		Capacity int  `json:"capacity"`
	}
)

func (this *Router) registerAPI() {
	apiPrefix := "/api"
	g := this.handler.Group(apiPrefix)
	g.Use()
	// 登录验证
	g.Use(NeedLogin(AddSkipperURL([]string{
		apiPrefix + "/v1/account/login",
		apiPrefix + "/v1/account/logout",
		apiPrefix + "/v1/user/info",
	}...)))
	v1 := g.Group("/v1")
	// Account 接口管理
	accountV1 := v1.Group("/account")
	{
		_api := new(api.Account)
		accountV1.POST("/login", _api.Login)
		accountV1.POST("/logout", _api.Logout)
	}
	// User 用户管理
	UserV1 := v1.Group("/user")
	{
		_api := new(api.User)
		UserV1.GET("/info", _api.Info)
		UserV1.GET("/list", _api.List)
	}
}

func (this *Router) Init() *gin.Engine {
	gin.SetMode(this.Mode)

	app := gin.New()

	if this.IsCors {
		app.Use(Cors())
	}
	app.NoRoute(NoRouteHandler())
	app.NoMethod(NoMethodHandler())
	app.Use(LoggerHandle("log/gin.log", 3))
	app.Use(TimeoutHandle(time.Second * 30))
	app.Use(RecoveryHandler())

	if this.RateLimitConfig != nil {
		if this.RateLimitConfig.IsRate {
			rate.NewIPRateLimiter()(this.RateLimitConfig.Limit, this.RateLimitConfig.Capacity)
			app.Use(rate.RequestIPRateLimiter()(this.RateLimitConfig.Limit, this.RateLimitConfig.Capacity))
		}
	}
	if config.IsDebug() {
		gin.DefaultWriter = io.MultiWriter(os.Stdout)
		app.StaticFS("/api-docs", http.Dir("./doc"))
	}
	app.StaticFS("/upload", http.Dir("./upload"))
	app.MaxMultipartMemory = 4 << 20
	this.handler = app
	// 注册路由
	this.registerAPI()

	return app
}

func NewRouter(option *Option) *Router {
	return &Router{Option: option}
}