<?php

namespace Battle\Priem;

abstract class AbstractPriem implements PriemInterface
{
    protected int $caster;
    protected string $name;
    protected string $icon;

    protected int $power;

    /**
     * На кого применяем приём. Например:
     * self, static_friend, static_enemy, random_friend, random_enemy, random_friend_group, random_enemy_group,
     * all_friend, all_enemy, all,...
     * @var int
     */
    protected int $targetType;

    /**
     * Массив id союзников
     * @var array
     */
    protected array $friendTeam;

    /** Массив id противников
     * @var array
     */
    protected array $enemyTeam;

    public function __construct(
        int    $caster,
        array  $friendTeam,
        array  $enemyTeam,
        int    $targetType,
        string $name,
        string $icon = '',
    ) {
        $this->caster = $caster;
        $this->friendTeam = $friendTeam;
        $this->enemyTeam = $enemyTeam;
        $this->targetType = $targetType;
        $this->icon = $icon;
        $this->name = $name;
    }

    protected function getTarget(): array
    {
        $targets = [];
        $allExceptCaster = array_merge($this->friendTeam, $this->enemyTeam);
        switch ($this->targetType) {
            case self::TAGRET_SELF:
                $targets[] = $this->caster;
                break;
            case self::TARGET_RANDOM_ENEMY:
                shuffle($this->enemyTeam);
                $targets[] = end($this->enemyTeam);
                break;
            case self::TARGET_RANDOM_FRIEND:
                shuffle($this->friendTeam);
                $targets[] = end($this->friendTeam);
                break;
            case self::TARGET_RANDOM:
                shuffle($allExceptCaster);
                $targets[] = end($allExceptCaster);
                break;
            case self::TARGET_RANDOM_ENEMIES:
                for ($i = 1; $i <= count($this->enemyTeam); $i++) {
                    if ($i > 1 && mt_rand(1,2) === 1) {
                        continue;
                    }
                    shuffle($this->enemyTeam);
                    $targets[] = array_shift($this->enemyTeam);
                }
                break;
            case self::TARGET_RANDOM_FRIENDS:
                for ($i = 1; $i <= count($this->friendTeam); $i++) {
                    if ($i > 1 && mt_rand(1,2) === 1) {
                        continue;
                    }
                    shuffle($this->friendTeam);
                    $targets[] = array_shift($this->friendTeam);
                }
                break;
            case self::TARGET_RANDOMS:
                for ($i = 1; $i <= count($allExceptCaster); $i++) {
                    if ($i > 1 && mt_rand(1,2) === 1) {
                        continue;
                    }
                    shuffle($allExceptCaster);
                    $targets[] = array_shift($allExceptCaster);
                }
                break;
            case self::TARGET_ALL_ENEMIES:
                $targets = $this->enemyTeam;
                break;
            case self::TARGET_ALL_FRIENDS:
                $targets = $this->friendTeam;
                break;
            case self::TARGET_ALL:
                $targets = $allExceptCaster;
                $targets[] = $this->caster;
                break;
        }
        return $targets;
    }

    /**
     * Возвращает иконку приёма. В текущей реализации у каждого приёма должна быть иконка.
     * @return string
     */
    abstract public function getIcon(): string;
}