package application

import (
	"fmt"
	"net/http"

	"sirlab.de/go/knowyt/game"
	"sirlab.de/go/knowyt/log"
	"sirlab.de/go/knowyt/user"
)

func (app *Application) RemovePlayer(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")
	if id == usr.GetId() {
		w.WriteHeader(http.StatusForbidden)
		log.Warn("can't delete yourself\n")
		fmt.Fprintf(w, "forbidden")
		return
	}
	if err := app.removePlayerById(id, gm); err != nil {
		w.WriteHeader(http.StatusForbidden)
		log.Warn("%v\n", err.Error())
		fmt.Fprintf(w, "forbidden")
		return
	}

	fmt.Fprintf(w, "ok")
}

func (app *Application) removePlayerById(id string, gm *game.Game) error {
	userToRemove := app.users[id]
	if userToRemove.GetId() != id || userToRemove.GetGameId() != gm.GetId() {
		return fmt.Errorf("couldn't find player %s in game %s\n", id, gm.GetId())
	}

	if err := userToRemove.RemovePlayer(); err != nil {
		return err
	}

	gm.RemovePlayer(userToRemove)
	delete(app.users, id)

	return nil
}