package middlewares

import (
	"github.com/gin-gonic/gin"
	"hospital-admin-api/api/dao"
	"hospital-admin-api/api/responses"
	"hospital-admin-api/consts"
	"net/http"
	"regexp"
	"strings"
)

// Auth Auth认证
func Auth() gin.HandlerFunc {
	return func(c *gin.Context) {
		// 获取角色id
		roleId := c.GetInt64("RoleId")
		if roleId == 0 {
			responses.Fail(c)
			c.Abort()
			return
		}

		// 获取用户id
		userId := c.GetInt64("UserId")
		if userId == 0 {
			responses.Fail(c)
			c.Abort()
			return
		}

		// 获取用户数据
		adminUserDao := dao.AdminUserDao{}
		adminUser, err := adminUserDao.GetAdminUserFirstById(userId)
		if err != nil || adminUser == nil {
			responses.FailWithMessage("用户数据错误", c)
			c.Abort()
			return
		}

		if adminUser.Status == 2 {
			responses.FailWithMessage("用户审核中", c)
			c.Abort()
			return
		}

		if adminUser.Status == 3 {
			responses.FailWithMessage("用户已删除或禁用", c)
			c.Abort()
			return
		}

		if adminUser.RoleID == 0 {
			responses.FailWithMessage("用户角色错误", c)
			c.Abort()
			return
		}

		// 获取角色数据
		adminRoleDao := dao.AdminRoleDao{}
		adminRole, err := adminRoleDao.GetAdminRoleFirstById(roleId)
		if err != nil || adminRole == nil {
			responses.FailWithMessage("角色错误", c)
			c.Abort()
			return
		}

		// 检测角色是否已被禁用
		if adminRole.RoleStatus == 2 {
			responses.FailWithMessage("角色已被禁用", c)
			c.Abort()
			return
		}

		// 超级管理员不验证权限
		if adminRole.IsAdmin == 1 {
			c.Next()
			return
		}

		// 获取用户部门数据
		if adminUser.DeptID != 0 {
			adminDeptDao := dao.AdminDeptDao{}
			adminDept, err := adminDeptDao.GetAdminDeptById(adminUser.DeptID)
			if err != nil || adminDept == nil {
				responses.FailWithMessage("用户部门数据错误", c)
				c.Abort()
				return
			}

			if adminDept.DeptStatus == 2 {
				responses.FailWithMessage("您所在的部门已被删除，请联系管理员修改", c)
				c.Abort()
				return
			}
		}

		// 获取用户部门数据
		if adminUser.PostID != 0 {
			adminPostDao := dao.AdminPostDao{}
			adminPost, err := adminPostDao.GetAdminPostById(adminUser.PostID)
			if err != nil || adminPost == nil {
				responses.FailWithMessage("用户岗位数据错误", c)
				c.Abort()
				return
			}

			if adminPost.PostStatus == 2 {
				responses.FailWithMessage("您所在的岗位已被删除，请联系管理员修改", c)
				c.Abort()
				return
			}
		}

		path := c.Request.URL.Path

		// 匹配路由为/:id的接口
		reg := regexp.MustCompile("/(\\d+)$")

		match := reg.MatchString(c.Request.RequestURI)
		if match {
			// 找到最后一个数字的索引
			lastSlashIndex := strings.LastIndex(c.Request.RequestURI, "/")
			if lastSlashIndex != -1 {

				// 替换最后一个数字部分为 :id
				path = path[:lastSlashIndex] + "/:id"
			} else {
				c.JSON(http.StatusOK, gin.H{
					"message": "请求路径错误",
					"code":    consts.ServerError,
					"data":    "",
				})

				c.Abort()
				return
			}
		}

		// 检测接口是否需要验证权限
		adminApiDao := dao.AdminApiDao{}

		maps := make(map[string]interface{})
		maps["api_path"] = path
		maps["api_method"] = c.Request.Method
		adminApis, err := adminApiDao.GetAdminApiList(maps)
		if len(adminApis) == 0 || err != nil {
			c.JSON(http.StatusOK, gin.H{
				"message": "请求路径错误",
				"code":    consts.ServerError,
				"data":    "",
			})
			c.Abort()
			return
		}

		// 接口无需验证权限
		if adminApis[0].IsAuth == 0 {
			c.Next()
			return
		}

		path = path + c.Request.Method

		// 获取角色菜单id
		AdminRoleMenuDao := dao.AdminRoleMenuDao{}
		adminRoleMenu, _ := AdminRoleMenuDao.GetAdminRoleMenuListByRoleId(roleId)
		if adminRoleMenu == nil {
			c.JSON(http.StatusForbidden, gin.H{
				"message": "暂无权限",
				"code":    consts.ClientHttpUnauthorized,
				"data":    "",
			})
			c.Abort()
			return
		}

		var apiPermissions = make(map[string]bool)

		// 获取菜单对应api
		adminMenuApiDao := dao.AdminMenuApiDao{}
		for _, v := range adminRoleMenu {
			adminMenuApi, _ := adminMenuApiDao.GetAdminMenuApiListWithAPIByMenuID(v.MenuID)
			if adminMenuApi == nil {
				// 菜单无绑定接口
				continue
			}

			// 将API权限存储在apiPermissions中
			for _, api := range adminMenuApi {
				apiPermissions[api.API.APIPath+api.API.APIMethod] = true
			}
		}

		// 在apiPermissions中查找对应的API权限
		hasPermission := apiPermissions[path]
		if !hasPermission {
			c.JSON(http.StatusForbidden, gin.H{
				"message": "暂无权限",
				"code":    consts.ClientHttpUnauthorized,
				"data":    "",
			})

			c.Abort()
			return
		}

		c.Next()
	}
}