package sysmenu

import (
	"fmt"
	"net/http"

	"be.ems/features/sys_menu/consts"
	"be.ems/features/sys_menu/model"
	"be.ems/features/sys_menu/service"
	"be.ems/lib/core/utils/ctx"
	"be.ems/lib/core/utils/regular"
	"be.ems/lib/core/vo/result"
	"be.ems/lib/midware"
	"be.ems/lib/services"
	"be.ems/restagent/config"
	srcConfig "be.ems/src/framework/config"
)

// 菜单接口添加到路由
func Routers() []services.RouterItem {
	// 实例化控制层 SysMenuApi 结构体
	var apis = &SysMenuApi{
		sysMenuService: service.NewServiceSysMenu,
	}

	rs := [...]services.RouterItem{
		{
			Method:     "GET",
			Pattern:    "/menus",
			Handler:    apis.List,
			Middleware: midware.Authorize(nil),
		},
		{
			Method:     "GET",
			Pattern:    "/menu/{menuId}",
			Handler:    apis.Info,
			Middleware: midware.Authorize(nil),
		},
		{
			Method:     "POST",
			Pattern:    "/menu",
			Handler:    apis.Add,
			Middleware: midware.Authorize(nil),
		},
		{
			Method:     "PUT",
			Pattern:    "/menu",
			Handler:    apis.Edit,
			Middleware: midware.Authorize(nil),
		},
		{
			Method:     "DELETE",
			Pattern:    "/menu/{menuId}",
			Handler:    apis.Remove,
			Middleware: midware.Authorize(nil),
		},
		{
			Method:     "GET",
			Pattern:    "/menus/treeSelect",
			Handler:    apis.TreeSelect,
			Middleware: midware.Authorize(nil),
		},
		{
			Method:     "GET",
			Pattern:    "/menu/roleMenuTreeSelect/{roleId}",
			Handler:    apis.RoleMenuTreeSelect,
			Middleware: midware.Authorize(nil),
		},
		// 添加更多的 Router 对象...
	}

	// 生成两组前缀路由
	rsPrefix := []services.RouterItem{}
	for _, v := range rs {
		path := "/menuManage/{apiVersion}" + v.Pattern
		// 固定前缀
		v.Pattern = config.DefaultUriPrefix + path
		rsPrefix = append(rsPrefix, v)
		// 可配置
		v.Pattern = config.UriPrefix + path
		rsPrefix = append(rsPrefix, v)
	}
	return rsPrefix
}

// // 实例化控制层 SysMenuApi 结构体
// var NewSysMenu = &SysMenuApi{
// 	sysMenuService: NewServiceSysMenu,
// }

// 菜单信息
//
// PATH /menuManage
type SysMenuApi struct {
	// 菜单服务
	sysMenuService *service.ServiceSysMenu
}

// 菜单列表
//
// GET /list
func (s *SysMenuApi) List(w http.ResponseWriter, r *http.Request) {
	query := model.SysMenu{}
	if v := ctx.GetQuery(r, "menuName"); v != "" {
		query.MenuName = v
	}
	if v := ctx.GetQuery(r, "status"); v != "" {
		query.Status = v
	}

	userId := ctx.LoginUserToUserID(r)
	if srcConfig.IsAdmin(userId) {
		userId = "*"
	}
	data := s.sysMenuService.SelectMenuList(query, userId)
	ctx.JSON(w, 200, result.OkData(data))
}

// 菜单信息
//
// GET /:menuId
func (s *SysMenuApi) Info(w http.ResponseWriter, r *http.Request) {
	menuId := ctx.Param(r, "menuId")
	if menuId == "" {
		ctx.JSON(w, 400, result.CodeMsg(400, "parameter error"))
		return
	}
	data := s.sysMenuService.SelectMenuById(menuId)
	if data.MenuID == menuId {
		ctx.JSON(w, 200, result.OkData(data))
		return
	}
	ctx.JSON(w, 200, result.Err(nil))
}

// 菜单新增
//
// POST /
func (s *SysMenuApi) Add(w http.ResponseWriter, r *http.Request) {
	var body model.SysMenu
	err := ctx.ShouldBindJSON(r, &body)
	if err != nil || body.MenuID != "" {
		ctx.JSON(w, 400, result.CodeMsg(400, "parameter error"))
		return
	}

	// 目录和菜单检查地址唯一
	if consts.TYPE_DIR == body.MenuType || consts.TYPE_MENU == body.MenuType {
		uniqueNenuPath := s.sysMenuService.CheckUniqueMenuPath(body.Path, "")
		if !uniqueNenuPath {
			msg := fmt.Sprintf("菜单新增【%s】失败，菜单路由地址已存在", body.MenuName)
			ctx.JSON(w, 200, result.ErrMsg(msg))
			return
		}
	}

	// 检查名称唯一
	uniqueNenuName := s.sysMenuService.CheckUniqueMenuName(body.MenuName, body.ParentID, "")
	if !uniqueNenuName {
		msg := fmt.Sprintf("菜单新增【%s】失败，菜单名称已存在", body.MenuName)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	// 外链菜单需要符合网站http(s)开头
	if body.IsFrame == "0" && !regular.ValidHttp(body.Path) {
		msg := fmt.Sprintf("菜单新增【%s】失败，非内部地址必须以http(s)://开头", body.MenuName)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	body.CreateBy = ctx.LoginUserToUserName(r)
	insertId := s.sysMenuService.InsertMenu(body)
	if insertId != "" {
		ctx.JSON(w, 200, result.Ok(nil))
		return
	}
	ctx.JSON(w, 200, result.Err(nil))
}

// 菜单修改
//
// PUT /
func (s *SysMenuApi) Edit(w http.ResponseWriter, r *http.Request) {
	var body model.SysMenu
	err := ctx.ShouldBindJSON(r, &body)
	if err != nil || body.MenuID == "" {
		ctx.JSON(w, 400, result.CodeMsg(400, "parameter error"))
		return
	}

	// 上级菜单不能选自己
	if body.MenuID == body.ParentID {
		msg := fmt.Sprintf("Menu modification failed for [%s], parent menu cannot select itself", body.MenuName)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	// 检查数据是否存在
	menuInfo := s.sysMenuService.SelectMenuById(body.MenuID)
	if menuInfo.MenuID != body.MenuID {
		ctx.JSON(w, 200, result.ErrMsg("No permission to access menu data"))
		return
	}
	// 父级ID不为0是要检查
	if body.ParentID != "0" {
		menuParent := s.sysMenuService.SelectMenuById(body.ParentID)
		if menuParent.MenuID != body.ParentID {
			ctx.JSON(w, 200, result.ErrMsg("No permission to access menu data"))
			return
		}
		// 禁用菜单时检查父菜单是否使用
		if body.Status == "1" && menuParent.Status == "0" {
			ctx.JSON(w, 200, result.ErrMsg("Parent menu not enabled!"))
			return
		}
	}

	// 目录和菜单检查地址唯一
	if consts.TYPE_DIR == body.MenuType || consts.TYPE_MENU == body.MenuType {
		uniqueNenuPath := s.sysMenuService.CheckUniqueMenuPath(body.Path, body.MenuID)
		if !uniqueNenuPath {
			msg := fmt.Sprintf("菜单修改【%s】失败，菜单路由地址已存在", body.MenuName)
			ctx.JSON(w, 200, result.ErrMsg(msg))
			return
		}
	}

	// 检查名称唯一
	uniqueNenuName := s.sysMenuService.CheckUniqueMenuName(body.MenuName, body.ParentID, body.MenuID)
	if !uniqueNenuName {
		msg := fmt.Sprintf("菜单修改【%s】失败，菜单名称已存在", body.MenuName)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	// 外链菜单需要符合网站http(s)开头
	if body.IsFrame == "0" && !regular.ValidHttp(body.Path) {
		msg := fmt.Sprintf("菜单修改【%s】失败，非内部地址必须以http(s)://开头", body.MenuName)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	// 禁用菜单时检查子菜单是否使用
	if body.Status == "0" {
		hasStatus := s.sysMenuService.HasChildByMenuIdAndStatus(body.MenuID, "1")
		if hasStatus > 0 {
			msg := fmt.Sprintf("不允许禁用，存在使用子菜单数：%d", hasStatus)
			ctx.JSON(w, 200, result.ErrMsg(msg))
			return
		}
	}

	body.UpdateBy = ctx.LoginUserToUserName(r)
	rows := s.sysMenuService.UpdateMenu(body)
	if rows > 0 {
		ctx.JSON(w, 200, result.Ok(nil))
		return
	}
	ctx.JSON(w, 200, result.Err(nil))
}

// 菜单删除
//
// DELETE /:menuId
func (s *SysMenuApi) Remove(w http.ResponseWriter, r *http.Request) {
	menuId := ctx.Param(r, "menuId")
	if menuId == "" {
		ctx.JSON(w, 400, result.CodeMsg(400, "parameter error"))
		return
	}

	// 检查数据是否存在
	menu := s.sysMenuService.SelectMenuById(menuId)
	if menu.MenuID != menuId {
		ctx.JSON(w, 200, result.ErrMsg("No permission to access menu data!"))
		return
	}

	// 检查是否存在子菜单
	hasChild := s.sysMenuService.HasChildByMenuIdAndStatus(menuId, "")
	if hasChild > 0 {
		msg := fmt.Sprintf("Deletion not allowed, there are sub orders: %d", hasChild)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	// 检查是否分配给角色
	existRole := s.sysMenuService.CheckMenuExistRole(menuId)
	if existRole > 0 {
		msg := fmt.Sprintf("Deletion not allowed, menu already assigned to roles: %d", existRole)
		ctx.JSON(w, 200, result.ErrMsg(msg))
		return
	}

	rows := s.sysMenuService.DeleteMenuById(menuId)
	if rows > 0 {
		msg := fmt.Sprintf("Successfully deleted: %d", rows)
		ctx.JSON(w, 200, result.OkMsg(msg))
		return
	}
	ctx.JSON(w, 200, result.Err(nil))
}

// 菜单树结构列表
//
// GET /treeSelect
func (s *SysMenuApi) TreeSelect(w http.ResponseWriter, r *http.Request) {
	query := model.SysMenu{}
	if v := ctx.GetQuery(r, "menuName"); v != "" {
		query.MenuName = v
	}
	if v := ctx.GetQuery(r, "status"); v != "" {
		query.Status = v
	}

	userId := ctx.LoginUserToUserID(r)
	if srcConfig.IsAdmin(userId) {
		userId = "*"
	}
	data := s.sysMenuService.SelectMenuTreeSelectByUserId(query, userId)
	ctx.JSON(w, 200, result.OkData(data))

}

// 菜单树结构列表（指定角色）
//
// GET /roleMenuTreeSelect/:roleId
func (s *SysMenuApi) RoleMenuTreeSelect(w http.ResponseWriter, r *http.Request) {
	roleId := ctx.Param(r, "roleId")
	if roleId == "" {
		ctx.JSON(w, 400, result.CodeMsg(400, "parameter error"))
		return
	}

	query := model.SysMenu{}
	if v := ctx.GetQuery(r, "menuName"); v != "" {
		query.MenuName = v
	}
	if v := ctx.GetQuery(r, "status"); v != "" {
		query.Status = v
	}

	userId := ctx.LoginUserToUserID(r)
	if srcConfig.IsAdmin(userId) {
		userId = "*"
	}
	menuTreeSelect := s.sysMenuService.SelectMenuTreeSelectByUserId(query, userId)
	checkedKeys := s.sysMenuService.SelectMenuListByRoleId(roleId)
	ctx.JSON(w, 200, result.OkData(map[string]any{
		"menus":       menuTreeSelect,
		"checkedKeys": checkedKeys,
	}))
}