<?php
// +----------------------------------------------------------------------
// | saiadmin [ saiadmin快速开发框架 ]
// +----------------------------------------------------------------------
// | Author: your name
// +----------------------------------------------------------------------
namespace app\dice\logic\reward_config;

use plugin\saiadmin\basic\think\BaseLogic;
use plugin\saiadmin\exception\ApiException;
use plugin\saiadmin\utils\Helper;
use app\dice\model\reward_config\DiceRewardConfig;
use support\Log;

/**
 * 奖励配置逻辑层
 * weight 仅 tier=BIGWIN 时可设定，保存时非 BIGWIN 强制 weight=0
 */
class DiceRewardConfigLogic extends BaseLogic
{
    /**
     * 构造函数
     */
    public function __construct()
    {
        $this->model = new DiceRewardConfig();
    }

    /**
     * 新增前：非 BIGWIN 时强制 weight=0
     */
    public function add(array $data): mixed
    {
        $data = $this->normalizeWeightByTier($data);
        return parent::add($data);
    }

    /**
     * 修改前：非 BIGWIN 时强制 weight=0
     */
    public function edit($id, array $data): mixed
    {
        $data = $this->normalizeWeightByTier($data);
        return parent::edit($id, $data);
    }

    /**
     * 仅 tier=BIGWIN 时保留 weight（且限制 0-100），否则强制为 0
     */
    private function normalizeWeightByTier(array $data): array
    {
        $tier = isset($data['tier']) ? (string) $data['tier'] : '';
        if ($tier !== 'BIGWIN') {
            $data['weight'] = 0;
            return $data;
        }
        $w = isset($data['weight']) ? (float) $data['weight'] : 0;
        $data['weight'] = max(0, min(100, $w));
        return $data;
    }

    /**
     * 按档位分组返回奖励配置列表（用于 T1-T5、BIGWIN 权重配比）
     * @return array<string, array> 键为 T1|T2|T3|T4|T5|BIGWIN，值为该档位下的配置行数组
     */
    public function getListGroupedByTier(): array
    {
        $tiers = ['T1', 'T2', 'T3', 'T4', 'T5', 'BIGWIN'];
        $list = $this->model->whereIn('tier', $tiers)->order('tier')->order('id')->select()->toArray();
        $grouped = [];
        foreach ($tiers as $t) {
            $grouped[$t] = [];
        }
        foreach ($list as $row) {
            $tier = isset($row['tier']) ? (string) $row['tier'] : '';
            if ($tier !== '' && isset($grouped[$tier])) {
                $grouped[$tier][] = $row;
            }
        }
        return $grouped;
    }

    /**
     * 批量更新权重：T1-T5 同档位权重之和必须等于 100；BIGWIN 为豹子权重单独设定，不校验合计
     * @param array<int, array{id: int, weight: float}> $items 元素为 [ id => 配置ID, weight => 0-100 ]
     * @throws ApiException 当单条 weight 非法或 T1-T5 某档位权重和≠100 时
     */
    public function batchUpdateWeights(array $items): void
    {
        if (empty($items)) {
            return;
        }
        $items = array_values($items);
        $ids = [];
        $weightById = [];
        foreach ($items as $item) {
            if (!is_array($item)) {
                continue;
            }
            $id = isset($item['id']) ? (int) $item['id'] : 0;
            $w = isset($item['weight']) ? (float) $item['weight'] : 0;
            if ($id < 0) {
                throw new ApiException('存在无效的配置ID');
            }
            if ($w < 0 || $w > 100) {
                throw new ApiException('权重必须在 0-100 之间');
            }
            $ids[] = $id;
            $w = max(0, min(100, $w));
            $weightById[$id] = isset($weightById[$id]) ? min(100, $weightById[$id] + $w) : $w;
        }
        $list = $this->model->whereIn('id', array_unique($ids))->field('id,tier,grid_number')->select()->toArray();
        $idToTier = [];
        foreach ($list as $r) {
            $id = isset($r['id']) ? (int) $r['id'] : 0;
            $idToTier[$id] = isset($r['tier']) ? (string) $r['tier'] : '';
        }
        $sumByTier = [];
        foreach ($weightById as $id => $w) {
            $tier = $idToTier[$id] ?? '';
            if ($tier === '') {
                throw new ApiException('配置ID ' . $id . ' 不存在或档位为空');
            }
            if ($tier === 'BIGWIN') {
                continue;
            }
            if (!isset($sumByTier[$tier])) {
                $sumByTier[$tier] = 0;
            }
            $sumByTier[$tier] += $w;
        }
        foreach ($sumByTier as $tier => $sum) {
            if (abs($sum - 100)) {
                throw new ApiException('档位 ' . $tier . ' 的权重之和必须等于 100%，当前为 ' . round($sum, 2));
            }
        }
        foreach ($weightById as $id => $w) {
            DiceRewardConfig::where('id', $id)->update(['weight' => $w]);
        }
        DiceRewardConfig::refreshCache();
    }
}