<?php

namespace App\Module\ThirdParty\Enums;

/**
 * 第三方服务日志级别枚举
 */
enum LOG_LEVEL: string
{
    case DEBUG = 'DEBUG';               // 调试级别
    case INFO = 'INFO';                 // 信息级别
    case WARNING = 'WARNING';           // 警告级别
    case ERROR = 'ERROR';               // 错误级别
    case CRITICAL = 'CRITICAL';         // 严重错误级别

    /**
     * 获取日志级别的中文描述
     *
     * @return string
     */
    public function getLabel(): string
    {
        return match ($this) {
            self::DEBUG => '调试',
            self::INFO => '信息',
            self::WARNING => '警告',
            self::ERROR => '错误',
            self::CRITICAL => '严重错误',
        };
    }

    /**
     * 获取日志级别的详细描述
     *
     * @return string
     */
    public function getDescription(): string
    {
        return match ($this) {
            self::DEBUG => '调试信息，用于开发和调试阶段',
            self::INFO => '一般信息，记录正常的操作流程',
            self::WARNING => '警告信息，可能存在问题但不影响正常运行',
            self::ERROR => '错误信息，操作失败但系统可以继续运行',
            self::CRITICAL => '严重错误，系统可能无法正常运行',
        };
    }

    /**
     * 获取日志级别的颜色
     *
     * @return string
     */
    public function getColor(): string
    {
        return match ($this) {
            self::DEBUG => 'secondary',
            self::INFO => 'primary',
            self::WARNING => 'warning',
            self::ERROR => 'danger',
            self::CRITICAL => 'dark',
        };
    }

    /**
     * 获取日志级别的图标
     *
     * @return string
     */
    public function getIcon(): string
    {
        return match ($this) {
            self::DEBUG => 'fa-bug',
            self::INFO => 'fa-info-circle',
            self::WARNING => 'fa-exclamation-triangle',
            self::ERROR => 'fa-times-circle',
            self::CRITICAL => 'fa-skull-crossbones',
        };
    }

    /**
     * 获取日志级别的数值（数字越大级别越高）
     *
     * @return int
     */
    public function getLevel(): int
    {
        return match ($this) {
            self::DEBUG => 1,
            self::INFO => 2,
            self::WARNING => 3,
            self::ERROR => 4,
            self::CRITICAL => 5,
        };
    }

    /**
     * 检查是否为错误级别
     *
     * @return bool
     */
    public function isError(): bool
    {
        return in_array($this, [self::ERROR, self::CRITICAL]);
    }

    /**
     * 检查是否需要告警
     *
     * @return bool
     */
    public function needsAlert(): bool
    {
        return in_array($this, [self::WARNING, self::ERROR, self::CRITICAL]);
    }

    /**
     * 检查是否需要立即处理
     *
     * @return bool
     */
    public function needsImmediateAction(): bool
    {
        return $this === self::CRITICAL;
    }

    /**
     * 获取所有日志级别的选项数组
     *
     * @return array
     */
    public static function getOptions(): array
    {
        $options = [];
        foreach (self::cases() as $case) {
            $options[$case->value] = $case->getLabel();
        }
        return $options;
    }

    /**
     * 按级别排序（从低到高）
     *
     * @return array
     */
    public static function getSortedByLevel(): array
    {
        $levels = self::cases();
        usort($levels, function ($a, $b) {
            return $a->getLevel() <=> $b->getLevel();
        });
        return $levels;
    }

    /**
     * 获取错误级别
     *
     * @return array
     */
    public static function getErrorLevels(): array
    {
        return array_filter(self::cases(), function ($case) {
            return $case->isError();
        });
    }

    /**
     * 获取需要告警的级别
     *
     * @return array
     */
    public static function getAlertLevels(): array
    {
        return array_filter(self::cases(), function ($case) {
            return $case->needsAlert();
        });
    }

    /**
     * 根据数值获取日志级别
     *
     * @param int $level
     * @return LOG_LEVEL|null
     */
    public static function fromLevel(int $level): ?LOG_LEVEL
    {
        foreach (self::cases() as $case) {
            if ($case->getLevel() === $level) {
                return $case;
            }
        }
        return null;
    }

    /**
     * 检查当前级别是否高于指定级别
     *
     * @param LOG_LEVEL $compareLevel
     * @return bool
     */
    public function isHigherThan(LOG_LEVEL $compareLevel): bool
    {
        return $this->getLevel() > $compareLevel->getLevel();
    }

    /**
     * 检查当前级别是否低于指定级别
     *
     * @param LOG_LEVEL $compareLevel
     * @return bool
     */
    public function isLowerThan(LOG_LEVEL $compareLevel): bool
    {
        return $this->getLevel() < $compareLevel->getLevel();
    }
}