package application

import (
	"fmt"
	"net/http"
	"sirlab.de/go/knyt/game"
	"sirlab.de/go/knyt/user"
)

func (app *Application) SavePlayer(usr *user.User, w http.ResponseWriter, r *http.Request) {
	gameRef := r.URL.Query().Get("g")
	gm, err := app.GetGameById(gameRef)
	if err != nil {
		w.WriteHeader(http.StatusNotFound)
		fmt.Fprintf(w, "game not found")
		return
	}

	if usr.GetGameId() != gameRef || !usr.IsGamemaster() {
		w.WriteHeader(http.StatusForbidden)
		fmt.Fprintf(w, "forbidden")
		return
	}

	id := r.URL.Query().Get("id")
	name := r.URL.Query().Get("name")
	authcode := r.URL.Query().Get("authcode")
	if name == "" {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Printf("player name must not be empty\n")
		fmt.Fprintf(w, "server error")
		return
	}
	if id != "" {
		if err := app.modifyUser(id, gm, name, authcode); err != nil {
			w.WriteHeader(http.StatusInternalServerError)
			fmt.Printf("%v\n", err)
			fmt.Fprintf(w, "server error")
			return
		}
	} else {
		if err := app.createUser(gm, name, authcode); err != nil {
			w.WriteHeader(http.StatusInternalServerError)
			fmt.Printf("%v\n", err)
			fmt.Fprintf(w, "server error")
			return
		}
	}
	fmt.Fprintf(w, "ok")
}

func (app *Application) modifyUser(id string, gm *game.Game, name, authcode string) error {
	modifyUser := app.users[id]
	if modifyUser.GetId() != id || modifyUser.GetGameId() != gm.GetId() {
		return fmt.Errorf("couldn't find player %s in game %s", id, gm.GetId())
	}
	modifyUser.SetName(name)
	modifyUser.SetAuthcode(authcode)
	if err := modifyUser.SaveUser(); err != nil {
		return err
	}
	gm.UpdatePlayer(modifyUser)
	return nil
}

func (app *Application) createUser(gm *game.Game, name, authcode string) error {
	return fmt.Errorf("Application.createUser() not yet implemented.")

}