<?php

namespace App\Services\Settlement\Matchers;

use App\Models\TicketItem;
use App\Models\TicketCombination;
use Illuminate\Support\Collection;
use App\Services\Settlement\OddsSnapshotReader;
use App\Services\Settlement\PublishedDrawResultBoard;
use App\Services\Settlement\Contracts\SettlementPlayMatcher;

/** pos_4d（特别奖）/ pos_4e（安慰奖）：命中任意一组即中奖。 */
final class Pos4ListTierSettlementMatcher implements SettlementPlayMatcher
{
    /** @var array<string, string> */
    private const PLAY_TO_TIER = [
        'pos_4d' => 'starter',
        'pos_4e' => 'consolation',
    ];

    public function __construct(
        private readonly OddsSnapshotReader $odds,
    ) {}

    public function match(TicketItem $item, PublishedDrawResultBoard $board, Collection $combinations): array
    {
        $tier = self::PLAY_TO_TIER[$item->play_code] ?? 'starter';
        $targets = array_flip($board->numbersForPrizeType($tier));
        if ($targets === []) {
            return ['win_amount' => 0, 'matched_prize_tier' => null, 'match_detail' => ['reason' => 'no_targets']];
        }

        $snapshot = is_array($item->odds_snapshot_json) ? $item->odds_snapshot_json : null;
        $oddsVal = $this->odds->oddsValueForScope($snapshot, $tier);
        $lines = [];
        $total = 0;

        foreach ($combinations as $c) {
            /** @var TicketCombination $c */
            $n = (string) $c->number_4d;
            if (! isset($targets[$n])) {
                continue;
            }
            $bet = (int) $c->bet_amount;
            $payout = (int) floor($bet * ($oddsVal / 10_000));
            $total += $payout;
            $lines[] = ['number_4d' => $n, 'bet_amount' => $bet, 'payout' => $payout, 'tier' => $tier];
        }

        return [
            'win_amount' => $total,
            'matched_prize_tier' => $total > 0 ? $tier : null,
            'match_detail' => ['lines' => $lines],
        ];
    }
}