package web

import (
	"net/http"
	"strconv"

	"goji.io/pat"

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

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

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

// MenuAdd to add a new menu entry
func menuAdd(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	logger := log.GetLog(r, "menuadd")
	var menuEntry Menu
	returnerr := libapi.JSONDecoder(w, r, logger, &menuEntry)
	if returnerr != nil {
		libapi.JSONWrite(w, r, false, returnerr)
		return
	}

	menuEntry.WebsiteID = ctx.Value("websiteid").(int64)
	if menuEntry.URL != nil {
		menuEntry.URLID = data.JsonNullInt64{}
		menuEntry.URLID.Scan(menuEntry.URL.ID)
		menuEntry.URL = nil
	}

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

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

	if menuEntry.URL != nil {
		menuEntry.URLID = data.JsonNullInt64{}
		menuEntry.URLID.Scan(menuEntry.URL.ID)
		menuEntry.URL = nil
	}

	if err := dbconnection.Save(menuEntry).Error; err != nil {
		logger.Error("database: during edit website menu entry: ", err)
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Message: "Internal Database Error"})
		return
	}
	logger.Info("done")
	libapi.JSONWrite(w, r, true, nil)
}

// MenuDelete to delete menu entry
func menuDelete(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	logger := log.GetLog(r, "menudelete")
	menuid, err := strconv.ParseInt(pat.Param(r, "menuid"), 10, 64)
	if err != nil {
		logger.Warn("invalid menuid, no integer")
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Fields: []string{"menuid"}, Message: "Not a valid menuid"})
		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: ", err)
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Message: "Internal Database Error"})
		return
	}
	logger.Info("done")
	libapi.JSONWrite(w, r, true, nil)
}