<?php

namespace App\Set;

use DomainException;
use RuntimeException;

class EloquentSetLevelRepository implements SetLevelRepository
{
    public function __construct(
        private SetRepository $setRepository,
    ) {}

    public function create(CreateSetLevelDto $dto): SetLevel
    {
        $kindExists = SetLevelModel::query()
            ->where('set_id', $dto->set->getId())
            ->where('kind', $dto->kind)
            ->exists();
        if ($kindExists) {
            throw new DomainException(
                'level kind must be unique within set',
            );
        }

        $currentMaximum = SetLevelModel::query()
            ->where('set_id', $dto->set->getId())
            ->max('depth');
        $depth = $currentMaximum === null
            ? 0
            : (int) $currentMaximum + 1;
        $model = SetLevelModel::create([
            'set_id' => $dto->set->getId(),
            'kind' => $dto->kind,
            'depth' => $depth,
        ]);

        return new SetLevel(
            id: $model->id,
            set: $dto->set,
            kind: $model->kind,
            depth: $model->depth,
        );
    }

    public function find(int $id): ?SetLevel
    {
        $model = SetLevelModel::find($id);

        return $model === null ? null : $this->toDomain($model);
    }

    public function findBySet(Set $set): array
    {
        $models = SetLevelModel::query()
            ->where('set_id', $set->getId())
            ->orderBy('depth')
            ->orderBy('id')
            ->get();
        $levels = [];

        foreach ($models as $model) {
            $levels[] = new SetLevel(
                id: $model->id,
                set: $set,
                kind: $model->kind,
                depth: $model->depth,
            );
        }

        return $levels;
    }

    private function toDomain(SetLevelModel $model): SetLevel
    {
        $set = $this->setRepository->find($model->set_id);
        if ($set === null) {
            throw new RuntimeException('set level set not found');
        }

        return new SetLevel(
            id: $model->id,
            set: $set,
            kind: $model->kind,
            depth: $model->depth,
        );
    }
}