<?php

namespace App\Module\Game\Enums;

use UCore\Enum\EnumCore;
use UCore\Enum\EnumToInt;

/**
 * 条件比较运算符枚举
 */
enum CONDITION_OPERATOR: int
{
    use EnumCore, EnumToInt;

    /**
     * 等于
     */
    case EQUAL = 1;

    /**
     * 不等于
     */
    case NOT_EQUAL = 2;

    /**
     * 大于
     */
    case GREATER_THAN = 3;

    /**
     * 大于等于
     */
    case GREATER_THAN_OR_EQUAL = 4;

    /**
     * 小于
     */
    case LESS_THAN = 5;

    /**
     * 小于等于
     */
    case LESS_THAN_OR_EQUAL = 6;

    /**
     * 获取所有比较运算符
     *
     * @return array
     */
    public static function getAll(): array
    {
        return [
            self::EQUAL->value => '等于',
            self::NOT_EQUAL->value => '不等于',
            self::GREATER_THAN->value => '大于',
            self::GREATER_THAN_OR_EQUAL->value => '大于等于',
            self::LESS_THAN->value => '小于',
            self::LESS_THAN_OR_EQUAL->value => '小于等于',
        ];
    }

    /**
     * 获取比较运算符名称
     *
     * @param int $operator
     * @return string
     */
    public static function getName(int $operator): string
    {
        return self::getAll()[$operator] ?? '未知';
    }

    /**
     * 检查比较运算符是否有效
     *
     * @param int $operator
     * @return bool
     */
    public static function isValid(int $operator): bool
    {
        return isset(self::getAll()[$operator]);
    }

    /**
     * 获取比较运算符符号
     *
     * @param int $operator
     * @return string
     */
    public static function getSymbol(int $operator): string
    {
        $symbols = [
            self::EQUAL->value => '=',
            self::NOT_EQUAL->value => '≠',
            self::GREATER_THAN->value => '>',
            self::GREATER_THAN_OR_EQUAL->value => '≥',
            self::LESS_THAN->value => '<',
            self::LESS_THAN_OR_EQUAL->value => '≤',
        ];

        return $symbols[$operator] ?? '?';
    }

    /**
     * 执行比较操作
     *
     * @param mixed $a 第一个值
     * @param mixed $b 第二个值
     * @param int $operator 运算符
     * @return bool 比较结果
     */
    public static function compare($a, $b, int $operator): bool
    {
        switch ($operator) {
            case self::EQUAL->value:
                return $a == $b;
            case self::NOT_EQUAL->value:
                return $a != $b;
            case self::GREATER_THAN->value:
                return $a > $b;
            case self::GREATER_THAN_OR_EQUAL->value:
                return $a >= $b;
            case self::LESS_THAN->value:
                return $a < $b;
            case self::LESS_THAN_OR_EQUAL->value:
                return $a <= $b;
            default:
                return false;
        }
    }
}