<?php

namespace App\Services\Draw;

use App\Models\Draw;
use App\Models\TicketItem;
use App\Models\TicketOrder;
use App\Models\WalletTxn;
use App\Services\Ticket\RiskPoolService;
use App\Services\Ticket\TicketWalletService;

/**
 * 取消期号前：退本、释池，避免已扣款注单悬空。
 */
final class DrawCancelBetRefundService
{
    public function __construct(
        private readonly RiskPoolService $riskPool,
        private readonly TicketWalletService $ticketWallet,
    ) {}

    public function refundOpenBetsForDraw(Draw $draw): void
    {
        $hasBlockedItems = TicketItem::query()
            ->where('draw_id', $draw->id)
            ->whereIn('status', ['settled_win', 'settled_lose', 'pending_payout'])
            ->exists();

        if ($hasBlockedItems) {
            throw new \RuntimeException('draw_has_settled_tickets');
        }

        $orders = TicketOrder::query()
            ->where('draw_id', $draw->id)
            ->whereNotIn('status', ['refunded', 'failed'])
            ->orderBy('id')
            ->get();

        foreach ($orders as $order) {
            $this->refundOrder($draw, $order);
        }
    }

    private function refundOrder(Draw $draw, TicketOrder $order): void
    {
        $lockedOrder = TicketOrder::query()->whereKey($order->id)->lockForUpdate()->first();
        if ($lockedOrder === null || in_array($lockedOrder->status, ['refunded', 'failed'], true)) {
            return;
        }

        $items = TicketItem::query()
            ->where('order_id', $lockedOrder->id)
            ->whereIn('status', ['pending_confirm', 'pending_draw', 'pending_payout'])
            ->with('combinations')
            ->lockForUpdate()
            ->get();

        foreach ($items as $item) {
            $locks = [];
            foreach ($item->combinations as $combo) {
                $locks[] = [
                    'number_4d' => (string) $combo->number_4d,
                    'amount' => (int) $combo->estimated_payout,
                ];
            }

            if ($locks !== []) {
                $this->riskPool->release((int) $draw->id, $item, $locks);
            }

            $item->forceFill([
                'status' => 'refunded',
                'fail_reason_code' => 'draw_cancelled',
                'fail_reason_text' => 'draw_cancelled_refund',
                'risk_locked_amount' => 0,
            ])->save();
        }

        $hasPostedDeduct = WalletTxn::query()
            ->where('biz_type', 'bet_deduct')
            ->where('biz_no', $lockedOrder->order_no)
            ->where('status', 'posted')
            ->exists();

        if ($hasPostedDeduct) {
            $this->ticketWallet->reverseBetDeduct($lockedOrder);
        }

        $lockedOrder->forceFill(['status' => 'refunded'])->save();
    }
}