<?php

namespace App\Services\AgentSettlement;

use App\Support\PlayerFundingMode;
use Carbon\Carbon;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;

/** 账期窗口内信用流水与占成流水笔数（关账前诊断）。 */
final class AgentSettlementPeriodPipelineService
{
    /**
     * @param  Collection<int, object>  $periods  settlement_periods 行，须含 id、period_start、period_end、admin_site_id
     * @return array<int, array{credit_ledger_count: int, share_ledger_count: int}>
     */
    public function countsForPeriods(Collection $periods): array
    {
        if ($periods->isEmpty()) {
            return [];
        }

        $siteIds = $periods->pluck('admin_site_id')->map(static fn ($id): int => (int) $id)->unique()->all();
        $siteCodes = DB::table('admin_sites')
            ->whereIn('id', $siteIds)
            ->pluck('code', 'id');

        $out = [];
        foreach ($periods as $period) {
            $periodId = (int) $period->id;
            $siteCode = (string) ($siteCodes[(int) $period->admin_site_id] ?? '');
            if ($siteCode === '') {
                $out[$periodId] = ['credit_ledger_count' => 0, 'share_ledger_count' => 0];

                continue;
            }

            $start = Carbon::parse($period->period_start)->startOfDay();
            $end = Carbon::parse($period->period_end)->endOfDay();

            $creditCount = (int) DB::table('credit_ledger as cl')
                ->join('players as p', function ($join): void {
                    $join->on('p.id', '=', 'cl.owner_id')
                        ->where('cl.owner_type', '=', 'player');
                })
                ->where('p.site_code', $siteCode)
                ->where('p.funding_mode', PlayerFundingMode::CREDIT)
                ->whereBetween('cl.created_at', [$start, $end])
                ->count();

            $shareCount = (int) DB::table('share_ledger as sl')
                ->join('players as p', 'p.id', '=', 'sl.player_id')
                ->where('p.site_code', $siteCode)
                ->whereBetween('sl.settled_at', [$start, $end])
                ->count();

            $out[$periodId] = [
                'credit_ledger_count' => $creditCount,
                'share_ledger_count' => $shareCount,
            ];
        }

        return $out;
    }
}