<?php

namespace App\Services\Rooms;

use App\Models\Room;

class RoomRealtimeStateService
{
    public function __construct(
        private readonly RoomStatisticsService $statistics,
    ) {}

    /**
     * @return array{
     *     current_round: int,
     *     revealed: bool,
     *     state_version: int,
     *     statistics: array{average: string|null, median: string|null}|null,
     *     players: array<int, array{
     *         id: int,
     *         name: string,
     *         is_moderator: bool,
     *         is_owner: bool,
     *         has_voted: bool,
     *         vote: string|null
     *     }>
     * }
     */
    public function for(Room $room): array
    {
        $room->refresh();
        $room->load([
            'players' => fn ($query) => $query
                ->active()
                ->select(['id', 'room_id', 'user_id', 'name', 'is_moderator', 'created_at'])
                ->orderByDesc('is_moderator')
                ->orderBy('created_at'),
            'players.votes' => fn ($query) => $query
                ->where('room_id', $room->id)
                ->where('round', $room->current_round),
        ]);

        return [
            'current_round' => $room->current_round,
            'revealed' => $room->revealed_at !== null,
            'state_version' => $room->state_version,
            'statistics' => $this->statistics->currentRound($room),
            'players' => $room->players
                ->map(function ($player) use ($room): array {
                    $vote = $player->votes->first();

                    return [
                        'id' => $player->id,
                        'name' => $player->name,
                        'is_moderator' => $player->is_moderator,
                        'is_owner' => $player->user_id === $room->owner_id,
                        'has_voted' => $vote !== null,
                        'vote' => $room->revealed_at !== null ? $vote?->value : null,
                    ];
                })
                ->all(),
        ];
    }
}