package lightCore

import (
	"fmt"
	"github.com/gin-gonic/gin"
	"net/http"
	"reflect"
)

type LightCore struct {
	gin   *gin.Engine
	g     *gin.RouterGroup
	props []interface{}
}

func StartEngine() *LightCore {
	gin.SetMode(ConfigValue.Server.RunMode)
	g := &LightCore{gin: gin.New(), props: make([]interface{}, 0)}
	g.gin.Use(gin.Logger(), gin.Recovery())
	return g
}
func (t *LightCore) GetGin() *gin.Engine {
	return t.gin
}

func (t *LightCore) Launch() {
	err := t.gin.Run(fmt.Sprintf(":%d", ConfigValue.Server.HttpPort))
	if err != nil {
		panic("Gin Launch Error")
	}

	//server := &http.Server{
	//	Addr:           fmt.Sprintf(":%d", addr),
	//	Handler:        t,
	//	MaxHeaderBytes: 1 << 20,
	//}
	//err := server.ListenAndServe()
	//if err != nil {
	//	panic("Gin Launch Error")
	//}
}

func (t *LightCore) Attach(f Fairing) *LightCore {
	t.gin.Use(func(context *gin.Context) {
		err := f.OnRequest(context)
		if err != nil {
			context.AbortWithStatusJSON(http.StatusOK, gin.H{"error": "onRequest"})
		} else {
			context.Next()
		}
	})
	return t
}
func (t *LightCore) LoadHtml(path string) *LightCore {
	t.gin.LoadHTMLGlob(path)
	return t
}

func (t *LightCore) StaticFS(path string, fs http.FileSystem) *LightCore {
	t.gin.StaticFS(path, fs)
	return t
}

func (t *LightCore) Beans(beans ...interface{}) *LightCore {
	t.props = append(t.props, beans...)
	return t
}

func (t *LightCore) Handle(httpMethod, relativePath string, handler interface{}, mids ...gin.HandlerFunc) *LightCore {
	if h := Convert(handler); h != nil {
		if len(mids) > 0 {
			mids = append(mids, h)
			t.g.Handle(httpMethod, relativePath, mids...)
		} else {
			t.g.Handle(httpMethod, relativePath, h)
		}

	}
	return t
}

func (t *LightCore) MountRaw(f func(s *gin.Engine)) *LightCore {
	f(t.GetGin())
	return t
}

func (t *LightCore) Mount(group string, errorHandlerFunc []gin.HandlerFunc, classes ...IClass) *LightCore {
	t.g = t.gin.Group(group)
	if len(errorHandlerFunc) > 0 {
		t.g.Use(errorHandlerFunc...)
	}
	for _, class := range classes {
		class.Build(t)
		//其实就是找到相同类型的数据就赋值上去
		t.setProp(class)
	}
	return t
}

func (t *LightCore) Mounts(routers []*Routers) *LightCore {
	for _, router := range routers {
		t.Mount(router.groupPath, router.cs.errorHandler, router.cs.Handles()...)
	}
	return t
}

func (t *LightCore) SetNoRoute(f func(context *gin.Context)) *LightCore {
	t.gin.NoRoute(f)
	return t
}

// 查找对应名字的属性
func (t *LightCore) getProp(tp reflect.Type) interface{} {
	for _, p := range t.props {
		if tp == reflect.TypeOf(p) {
			return p
		}
	}
	return nil
}

func (t *LightCore) setProp(class IClass) {
	vClass := reflect.ValueOf(class).Elem()
	for i := 0; i < vClass.NumField(); i++ {
		f := vClass.Field(i)
		if !f.IsNil() || f.Kind() != reflect.Ptr {
			//已经赋值了，不需要初始化了。
			continue
		}
		if p := t.getProp(f.Type()); p != nil {
			f.Set(reflect.New(f.Type().Elem()))
			f.Elem().Set(reflect.ValueOf(p).Elem())
		}
	}
}