package frame

import (
	"context"
	"github.com/gin-gonic/gin"
	"github.com/spf13/pflag"
	"github.com/spf13/viper"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"
	"ulink-admin/frame/third_plugins/inject"
)

const (
	usage = `fast`
)

var Permissions = make(gin.H)

type Fast struct {
	routers     map[string][]IRouter
	engine      *gin.Engine
	op          *Options
	usage       string
	authHandler HandlerFunc
	configs     []interface{}
}

func (g *Fast) Engine() *gin.Engine {
	return g.engine
}

// Ignite 项目初始化
func Ignite() *Fast {
	op := DefaultOptions()
	op.AddFlags(pflag.CommandLine)
	g := &Fast{
		routers: make(map[string][]IRouter),
		engine:  gin.New(),
		op:      op,
		usage:   usage,
		configs: make([]interface{}, 0),
	}
	return g
}
func (g *Fast) Use(middes ...IMidHandler) *Fast {
	for _, mid := range middes {
		g.engine.Use(MidFactory(mid))
	}
	return g
}

// 挂载权限
func (g *Fast) Auth(handlerFunc HandlerFunc) *Fast {
	g.authHandler = handlerFunc
	return g
}

// 挂载权限检测方法
func (g *Fast) Mount(name string, routers ...IRouter) *Fast {
	for _, r := range routers {
		aop.Provide(&inject.Object{Value: r})
	}
	if err := aop.Populate(); err != nil {
		panic(err)
	}
	if r, ok := g.routers[name]; ok {
		r = append(r, routers...)
		g.routers[name] = r
		return g
	}
	g.routers[name] = routers
	return g
}
func (g *Fast) Launch(addr ...string) {
	if len(addr) > 0 {
		g.op.AddrPort = addr[0]
	}
	g.run(g.op)
}

func (g *Fast) Banner(banner string) {
	g.usage = banner
}

func (g *Fast) Aop(class ...any) *Fast {
	for _, c := range class {
		aop.Provide(&inject.Object{Value: c})
	}
	if err := aop.Populate(); err != nil {
		panic(err)
	}
	return g
}

func (g *Fast) run(op *Options) {
	gin.SetMode(viper.GetString("mode"))

	for k, routers := range g.routers {
		for _, r := range routers {
			miss := make([]*TreePermission, 0)
			group := &Group{permissions: &miss, RouterGroup: g.engine.Group(k), authCheck: g.authHandler}
			r.Builder(group)
			Permissions[r.Name()] = group.GetPermissions()
		}
	}
	srv := &http.Server{
		Addr:    op.AddrPort,
		Handler: g.engine,
	}
	go func() {
		// service connections
		log.Printf("Listening and serving HTTP on %s\n", op.AddrPort)
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.Fatalf("listen: %s\n", err)
		}
	}()
	quit := make(chan os.Signal)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit
	log.Println("Shutdown Server ...")
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	if err := srv.Shutdown(ctx); err != nil {
		log.Fatal("Server Shutdown:", err)
	}
	select {
	case <-ctx.Done():
		log.Println("timeout of 5 seconds.")
	}
	log.Println("Server exiting")
}

func (g *Fast) Resource(f func(engine *gin.Engine)) *Fast {
	f(g.engine)
	return g
}