prize_type => 越小越优 */ private const TIER_RANK = [ 'first' => 0, 'second' => 1, 'third' => 2, 'starter' => 3, 'consolation' => 4, ]; /** @var Collection */ private readonly Collection $items; private string $firstPrizeNumber = ''; /** @var array */ private array $numberToBestTier = []; /** * @param Collection $items */ public function __construct(Collection $items) { $this->items = $items; $first = $items->firstWhere(fn (DrawResultItem $r) => $r->prize_type === 'first' && (int) $r->prize_index === 0); $this->firstPrizeNumber = $first !== null ? (string) $first->number_4d : ''; foreach ($items as $row) { $num = (string) $row->number_4d; if ($num === '') { continue; } $tier = (string) $row->prize_type; $rank = self::TIER_RANK[$tier] ?? 99; if (! isset($this->numberToBestTier[$num]) || $rank < $this->numberToBestTier[$num]['rank']) { $this->numberToBestTier[$num] = ['tier' => $tier, 'rank' => $rank]; } } } /** @return Collection */ public function allRows(): Collection { return $this->items; } public function row(string $prizeType, int $prizeIndex = 0): ?DrawResultItem { return $this->items->firstWhere( fn (DrawResultItem $r) => (string) $r->prize_type === $prizeType && (int) $r->prize_index === $prizeIndex, ); } /** * @return list */ public function numbersForPrizeType(string $prizeType): array { $out = []; foreach ($this->items as $row) { if ((string) $row->prize_type !== $prizeType) { continue; } $n = (string) $row->number_4d; if ($n !== '') { $out[] = $n; } } return $out; } public function firstPrizeNumber4d(): string { return $this->firstPrizeNumber; } public function suffix3ForTier(string $prizeType, int $prizeIndex = 0): string { $r = $this->row($prizeType, $prizeIndex); return $r !== null ? (string) $r->suffix_3d : ''; } public function suffix2ForTier(string $prizeType, int $prizeIndex = 0): string { $r = $this->row($prizeType, $prizeIndex); return $r !== null ? (string) $r->suffix_2d : ''; } /** * Big：任意 23 档中最佳命中档。 * * @return array{tier: string, rank: int}|null */ public function bestTierForNumber(string $number4d): ?array { return $this->numberToBestTier[$number4d] ?? null; } /** * Small：仅头 / 二 / 三奖（rank 0–2）。 * * @return array{tier: string, rank: int}|null */ public function bestSmallTierForNumber(string $number4d): ?array { $hit = $this->bestTierForNumber($number4d); if ($hit === null) { return null; } return $hit['rank'] <= 2 ? $hit : null; } }