<?php

/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

class Artifact {

    private $uuid = null;
    private $locationid = null;
    private $energy = 0;
    private $delete = false;

    /**
     * Create a new artifact.
     * @global type $database
     * @param int $ownerid
     * @param int $locationid
     * @param \Energy $energy
     * @param int $itemid
     * @return \Artifact The newly created artifact.
     */
    public static function create(int $ownerid, int $locationid, \Energy $energy, int $itemid) {
        global $database;
        $database->insert("artifacts", ["currentlife" => $energy->getEnergy(), "maxlife" => $energy->getMaxEnergy(), "locationid" => $locationid, "accountid" => $ownerid, "itemid" => $itemid]);
        return (new Artifact($database->id()));
    }

    public function __construct($uuid) {
        global $database;
        $data = $database->get("artifacts", ["artuuid", "currentlife", "maxlife", "locationid"], ["artuuid" => $uuid]);

        $this->uuid = $data["artuuid"];
        $this->energy = new Energy($data["currentlife"], $data["maxlife"]);
        $this->locationid = $data["locationid"];
    }

    public function changeEnergy(int $diff) {
        $this->energy->setEnergy($this->energy->getEnergy() + $diff);
    }

    public function getEnergy(): \Energy {
        return $this->energy;
    }

    /**
     * Check if the artifact will be deleted on save.
     * @return bool
     */
    public function deleted(): bool {
        if ($this->energy->getEnergy() == 0 || $this->delete) {
            return true;
        }
        return false;
    }

    /**
     * Mark for deletion on save.
     */
    public function delete() {
        $this->delete = true;
    }

    public function save() {
        global $database;

        if ($this->deleted()) {
            $database->delete("artifacts", ["artuuid" => $this->uuid]);
        } else {
            $database->update("artifacts", ["currentlife" => $this->energy->getEnergy(), "maxlife" => $this->energy->getMaxEnergy()], ["artuuid" => $this->uuid]);
        }
    }

}