package web

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

	"github.com/astaxie/session"
	"github.com/julienschmidt/httprouter"

	libapi "dev.sum7.de/sum7/warehost/lib/api"
	libsystem "dev.sum7.de/sum7/warehost/system"
)

// PageList give all pages of a website
func (api *API) PageList(w http.ResponseWriter, r *http.Request, _ httprouter.Params, sess session.Session, login *libsystem.Login, websiteid int64) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := api.log.GetLog(r, "pagelist")
	var pages []*Page
	api.dbconnection.Where("website = ?", websiteid).Preload("Menu").Find(&pages)
	returndata = pages
	logger.Info("done")
	return
}

// PageAdd to add a new page
func (api *API) PageAdd(w http.ResponseWriter, r *http.Request, ps httprouter.Params, sess session.Session, login *libsystem.Login, websiteid int64) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := api.log.GetLog(r, "pageadd")
	var page Page
	err := json.NewDecoder(r.Body).Decode(&page)
	if err != nil {
		logger.Error("fetch request")
		http.Error(w, err.Error(), http.StatusInternalServerError)
		returnerr = &libapi.ErrorResult{
			Message: "Internal Request Error",
		}
		return
	}

	page.WebsiteID = websiteid
	if menu := page.Menu; menu != nil {
		page.MenuID = page.Menu.ID
		page.Menu = nil
	}

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

// PageEdit to edit page
func (api *API) PageEdit(w http.ResponseWriter, r *http.Request, ps httprouter.Params, sess session.Session, login *libsystem.Login, websiteid int64) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := api.log.GetLog(r, "pageedit")
	var page Page
	pageid, err := strconv.ParseInt(ps.ByName("pageid"), 10, 64)
	if err != nil {
		returnerr = &libapi.ErrorResult{Fields: []string{"pageid"}, Message: "Not a valid pageid"}
		logger.Warn("invalid pageid, no integer")
		return
	}
	logger = logger.WithField("id", pageid)
	err = json.NewDecoder(r.Body).Decode(&page)
	if err != nil {
		logger.Error("fetch request")
		http.Error(w, err.Error(), http.StatusInternalServerError)
		returnerr = &libapi.ErrorResult{
			Message: "Internal Request Error",
		}
		return
	}
	page.WebsiteID = websiteid
	page.ID = pageid
	if menu := page.Menu; menu != nil {
		page.MenuID = page.Menu.ID
		page.Menu = nil
	}

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

// PageDelete to delete page
func (api *API) PageDelete(w http.ResponseWriter, r *http.Request, ps httprouter.Params, sess session.Session, login *libsystem.Login, websiteid int64) (returndata interface{}, returnerr *libapi.ErrorResult) {
	returndata = false
	logger := api.log.GetLog(r, "pagedelete")
	pageid, err := strconv.ParseInt(ps.ByName("pageid"), 10, 64)
	if err != nil {
		returnerr = &libapi.ErrorResult{Fields: []string{"pageid"}, Message: "Not a valid pageid"}
		logger.Warn("invalid pageid, no integer")
		return
	}
	logger = logger.WithField("id", pageid)
	page := &Page{
		WebsiteID: websiteid,
		ID:        pageid,
	}
	if err := api.dbconnection.Unscoped().Delete(page).Error; err != nil {
		logger.Error("database: during delete website page")
		returnerr = &libapi.ErrorResult{Message: "Internal Database Error"}
		return
	}
	returndata = true
	logger.Info("done")
	return
}