package web

import (
	"encoding/json"
	"net/http"
	"strconv"

	"goji.io/pat"
	"golang.org/x/net/context"

	libapi "dev.sum7.eu/sum7/warehost/lib/api"
)

// MenuTree to give the tree of a menu back
func menuTree(ctx context.Context, w http.ResponseWriter, r *http.Request) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := log.GetLog(r, "menutree")
	var menus []*Menu
	dbconnection.Where("website = ?", ctx.Value("websiteid").(int64)).Order("position").Find(&menus)
	returndata = BuildMenuTree(menus)
	logger.Info("done")
	return
}

// MenuList give all menu entries of a website
func menuList(ctx context.Context, w http.ResponseWriter, r *http.Request) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := log.GetLog(r, "menulist")
	var menus []*Menu
	dbconnection.Where("website = ?", ctx.Value("websiteid").(int64)).Order("position").Find(&menus)
	returndata = menus
	logger.Info("done")
	return
}

// MenuAdd to add a new menu entry
func menuAdd(ctx context.Context, w http.ResponseWriter, r *http.Request) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := log.GetLog(r, "menuadd")
	var menuEntry Menu
	err := json.NewDecoder(r.Body).Decode(&menuEntry)
	if err != nil {
		logger.Error("fetch request")
		http.Error(w, err.Error(), http.StatusInternalServerError)
		returnerr = &libapi.ErrorResult{
			Message: "Internal Request Error",
		}
		return
	}

	menuEntry.WebsiteID = ctx.Value("websiteid").(int64)

	if err := dbconnection.Create(&menuEntry).Error; err != nil {
		logger.Error("database: during create menu")
		returnerr = &libapi.ErrorResult{Message: "Internal Database Error"}
		return
	}
	returndata = true
	logger.Info("done")
	return
}

// MenuEdit to edit menu
func menuEdit(ctx context.Context, w http.ResponseWriter, r *http.Request) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := log.GetLog(r, "menuedit")
	var menuEntry Menu
	menuid, err := strconv.ParseInt(pat.Param(ctx, "menuid"), 10, 64)
	if err != nil {
		returnerr = &libapi.ErrorResult{Fields: []string{"menuid"}, Message: "Not a valid menuid"}
		logger.Warn("invalid loginid, no integer")
		return
	}
	logger = logger.WithField("id", menuid)
	err = json.NewDecoder(r.Body).Decode(&menuEntry)
	if err != nil {
		logger.Error("fetch request")
		http.Error(w, err.Error(), http.StatusInternalServerError)
		returnerr = &libapi.ErrorResult{
			Message: "Internal Request Error",
		}
		return
	}
	menuEntry.WebsiteID = ctx.Value("websiteid").(int64)
	menuEntry.ID = menuid

	if err := dbconnection.Save(menuEntry).Error; err != nil {
		logger.Error("database: during delete website menu entry")
		returnerr = &libapi.ErrorResult{Message: "Internal Database Error"}
		return
	}
	returndata = true
	logger.Info("done")
	return
}

// MenuDelete to delete menu entry
func menuDelete(ctx context.Context, w http.ResponseWriter, r *http.Request) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := log.GetLog(r, "menudelete")
	menuid, err := strconv.ParseInt(pat.Param(ctx, "menuid"), 10, 64)
	if err != nil {
		returnerr = &libapi.ErrorResult{Fields: []string{"menuid"}, Message: "Not a valid menuid"}
		logger.Warn("invalid menuid, no integer")
		return
	}
	logger = logger.WithField("id", menuid)
	menu := &Menu{
		WebsiteID: ctx.Value("websiteid").(int64),
		ID:        menuid,
	}
	if err := dbconnection.Unscoped().Delete(menu).Error; err != nil {
		logger.Error("database: during delete website menu entry")
		returnerr = &libapi.ErrorResult{Message: "Internal Database Error"}
		return
	}
	returndata = true
	logger.Info("done")
	return
}