package main

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

type Login struct {
	//binding:"required" required 修饰的字段，若接受为控制 则报错 是必选字段
	User     string `form:"username" json:"user" uri:"user" xml:"user" binding:"required"`
	Password string `form:"password" json:"password" uri:"password" xml:"password" binding:"required"`
}

func main() {
	//绑定JSON-结构体
	//bindJson()
	//绑定form-结构体
	//bindForm()
	//绑定uri-结构体
	//bindUri()

}

func bindJson() {
	r := gin.Default()
	//Json绑定
	r.POST("/loginJSON", func(c *gin.Context) {
		//声明接收的变量
		var json Login
		//将request中的body，自动按照json格式解析到结构体
		//gin.H封装了生成json数据的工具
		if err := c.ShouldBindJSON(&json); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}
		//判断用户名密码是否正确
		if json.User != "admin" || json.Password != "admin" {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "wrong username or password"})
			return
		}
		c.JSON(http.StatusOK, gin.H{"message": "ok"})
	})
	r.Run(":8000")
}

func bindForm() {
	r := gin.Default()
	r.POST("/loginform", func(c *gin.Context) {
		var form Login
		//Bind()默认解析并绑定form格式
		//根据请求头中的content-type自动推断
		if err := c.Bind(&form); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}
		if form.User != "admin" || form.Password != "admin" {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "wrong username or password"})
			return
		}
		c.JSON(http.StatusOK, gin.H{"message": "ok"})

	})
	r.Run(":8000")
}

// http://127.0.0.1/admin/admin
func bindUri() {
	r := gin.Default()
	r.GET("/:user/:password", func(c *gin.Context) {
		var login Login
		//Bind()默认解析并绑定form格式
		//根据请求头中的content-type自动推断
		if err := c.ShouldBindUri(&login); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}
		if login.User != "admin" || login.Password != "admin" {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "wrong username or password"})
			return
		}
		c.JSON(http.StatusOK, gin.H{"message": "ok"})

	})
	r.Run(":8000")
}