<?php

namespace App\Services;

use App\Enums\PointLogAction;
use App\Exceptions\BizException;
use App\Models\Admin\Administrator;
use App\Models\PointLog;
use App\Models\User;
use App\Models\UserInfo;
use Illuminate\Database\Eloquent\Model;

class PointService
{
    /**
     * 变更积分
     *
     * @throws \App\Exceptions\BizException
     */
    public function change(
        User $user,
        int $points,
        PointLogAction $action,
        ?string $remark = null,
        ?Model $loggable = null,
        ?Administrator $administrator = null,
    ) {
        if ($points === 0) {
            return;
        }

        $userinfo = UserInfo::lockForUpdate()->where('user_id', $user->id)->firstOrFail();

        switch ($action) {
            case PointLogAction::Recharge:
                if ($points < 0) {
                    throw new BizException('积分不能小于 0');
                }
                break;

            case PointLogAction::Deduction:
            case PointLogAction::Consumption:
                if ($points > 0) {
                    throw new BizException('积分不能大于 0');
                }
                break;
        }

        $before = $userinfo->points;
        $after = $before + $points;

        if ($after < 0) {
            throw new BizException('积分不足');
        }

        $userinfo->update([
            'points' => $after,
        ]);

        PointLog::create([
            'loggable_id' => $loggable?->id,
            'loggable_type' => $loggable?->getMorphClass(),
            'user_id' => $user->id,
            'action' => $action,
            'change_points' => $points,
            'before_points' => $before,
            'after_points' => $after,
            'remark' => $remark,
            'administrator_id' => $administrator?->id,
        ]);
    }
}