package main

import (
	"../serverImpl"
	"fmt"
	"git.wanpinghui.com/WPH/go_common/wph"
	"github.com/gin-gonic/gin"
	"net/http"
)

// Istio测试用，HTTP后端服务

func main() {
	router := gin.New()

	// 添加 GIN 请求处理中间件
	//router.Use(
	//	gzip.Gzip(gzip.DefaultCompression),
	//	mw.Favicon("./static/favicon.ico"), // 请求图标时返回favicon.ico
	//	mw.AddCrossOriginHeaders(),         // 添加跨域头
	//	mw.HandleOptionsMethod(),           // Options和Head请求处理
	//)
	// 设置404、405响应
	router.NoMethod(func(c *gin.Context) {
		resp := wph.E(http.StatusMethodNotAllowed, "Method Not Allowed", nil)
		resp.HttpStatus = http.StatusMethodNotAllowed
		panic(resp)
	})
	router.NoRoute(func(c *gin.Context) {
		resp := wph.E(http.StatusMethodNotAllowed, "Endpoint Not Found", nil)
		resp.HttpStatus = http.StatusMethodNotAllowed
		panic(resp)
	})

	// 注册路由
	router.GET("/backend", backend)

	// 开始监听HTTP请求
	httpServer := &http.Server{Addr: ":8080", Handler: router}
	go func(httpServer *http.Server) {
		println("Start http server")
		if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			println("http server failed to listen and serve", err.Error())
		}
	}(httpServer)
	serverImpl.SignalHandler(httpServer)
}

func backend(ctxt *gin.Context) {
	input, _ := ctxt.GetQuery("in")
	var ipStr string
	ip, err := wph.PrivateIPv4()
	if nil == err && nil != ip {
		ipStr = ip.String()
	}
	ctxt.JSON(http.StatusOK, wph.R(fmt.Sprintf("%s (from %s:8080)", input, ipStr)))
}