package middleware

import (
	"encoding/json"
	"github.com/gin-gonic/gin"
	"go_zh/model"
	"go_zh/server"
	"net/http"
)

// 不需要token验证的路由白名单
var whiteList = []string{
	"/api/auth/login",
	"/api/shopOrder/create",
}

func ApiMiddleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		// 从Header或Query中获取token
		token := c.GetHeader("Authorization")
		if token == "" {
			token = c.Query("token")
		}

		// 定义member结构信息
		var member *model.XMember
		var err error
		//获取redis
		redisServer := server.GetRedisServerInstance()
		// 检查当前路径是否在白名单中
		if isPathInWhiteList(c.Request.URL.Path) {
			if len(token) > 0 {
				data := redisServer.GetStr(token)
				if len(data) == 0 { //没用缓存信息
					//根据token获取用户信息
					memberModel := model.XMember{}
					member, err = memberModel.GetMemberByToken(token)
					if err != nil {
						c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
							"code":    401,
							"message": "认证信息已过期",
							"data":    nil,
						})
					}
					if member.ID <= 0 {
						c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
							"code":    401,
							"message": "token失效",
							"data":    nil,
						})
					}
					//存入缓存
					jsonData, _ := json.Marshal(member)
					redisServer.SetStr(token, string(jsonData), 120)
				} else {
					_ = json.Unmarshal([]byte(data), &member)

				}
				c.Set("mId", member.ID)
			}
			c.Next()
			return
		}

		if token == "" {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
				"code":    404,
				"message": "缺少认证信息",
				"data":    nil,
			})
			return
		}
		data := redisServer.GetStr(token)
		if len(data) == 0 { //没用缓存信息
			//根据token获取用户信息
			memberModel := model.XMember{}
			member, err = memberModel.GetMemberByToken(token)
			if err != nil {
				c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
					"code":    401,
					"message": "认证信息已过期",
					"data":    nil,
				})
			}
			if member.ID <= 0 {
				c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
					"code":    401,
					"message": "token失效",
					"data":    nil,
				})
			}
			//存入缓存
			jsonData, _ := json.Marshal(member)
			redisServer.SetStr(token, string(jsonData), 120)
		} else {
			_ = json.Unmarshal([]byte(data), &member)

		}
		c.Set("mId", member.ID)
		c.Next()
	}
}

// isPathInWhiteList 检查路径是否在白名单中
func isPathInWhiteList(path string) bool {
	for _, whitePath := range whiteList {
		// 精确匹配（用于匹配路径前缀）
		if path == whitePath {
			return true
		}
	}
	return false
}