<?php

namespace app\common\model\lottery;

use app\common\model\BaseModel;

class LotteryNumberMapping extends BaseModel
{
    protected $name = 'lottery_number_mapping';

    // 类型常量
    const TYPE_ZODIAC  = 1; // 生肖
    const TYPE_COLOR   = 2; // 波色
    const TYPE_ELEMENT = 3; // 五行

    protected $json = ['numbers'];
    protected $jsonAssoc = true;

    /**
     * 获取指定年份的全部映射数据
     */
    public static function getByYear(int $year): array
    {
        $list = self::where('year', $year)->order('type asc, sort asc')->select()->toArray();
        $result = ['zodiac' => [], 'color' => [], 'element' => []];
        foreach ($list as $item) {
            $item['numbers'] = is_string($item['numbers']) ? json_decode($item['numbers'], true) : $item['numbers'];
            match ((int)$item['type']) {
                self::TYPE_ZODIAC  => $result['zodiac'][]  = $item,
                self::TYPE_COLOR   => $result['color'][]   = $item,
                self::TYPE_ELEMENT => $result['element'][]  = $item,
            };
        }
        return $result;
    }

    /**
     * 获取指定年份某类型的映射（按attr_name索引）
     */
    public static function getMapByType(int $year, int $type): array
    {
        $list = self::where('year', $year)->where('type', $type)->order('sort asc')->select()->toArray();
        $map = [];
        foreach ($list as $item) {
            $nums = is_string($item['numbers']) ? json_decode($item['numbers'], true) : $item['numbers'];
            $map[$item['attr_name']] = $nums;
        }
        return $map;
    }

    /**
     * 根据号码反查属性名（如：号码1 → 生肖"马"、波色"红波"、五行"水"）
     */
    public static function lookupNumber(int $year, int $number): array
    {
        $all = self::where('year', $year)->order('type asc, sort asc')->select()->toArray();
        $result = ['zodiac' => '', 'color' => '', 'element' => ''];
        foreach ($all as $item) {
            $nums = is_string($item['numbers']) ? json_decode($item['numbers'], true) : $item['numbers'];
            if (in_array($number, $nums)) {
                match ((int)$item['type']) {
                    self::TYPE_ZODIAC  => $result['zodiac']  = $item['attr_name'],
                    self::TYPE_COLOR   => $result['color']   = $item['attr_name'],
                    self::TYPE_ELEMENT => $result['element'] = $item['attr_name'],
                };
            }
        }
        return $result;
    }

    /**
     * 从上一年份复制映射数据到新年份（用于年度轮转后微调）
     */
    public static function copyToNextYear(int $fromYear, int $toYear): int
    {
        $exists = self::where('year', $toYear)->count();
        if ($exists > 0) {
            return 0;
        }
        $list = self::where('year', $fromYear)->select()->toArray();
        $count = 0;
        foreach ($list as $item) {
            unset($item['id']);
            $item['year'] = $toYear;
            $item['create_time'] = time();
            $item['update_time'] = time();
            self::create($item);
            $count++;
        }
        return $count;
    }
}