<?php

namespace App\Services;

use App\Models\User;
use App\Services\Mne\BusinessRepository;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

final class DeclaredOriginStatistics
{
    /** @return array<string, list<array{code: string|null, name: string, count: int}>> */
    public function forManager(User $actor, ?string $origin = null): array
    {
        abort_unless(app(ScopedPortalAdministration::class)->interestOperator($actor), 403);
        $names = array_column(app(CountryCatalogue::class)->all(), 'name', 'code');
        $groups = [];
        $interests=DB::table('interest_requests')->whereNull('deleted_at');
        app(ScopedPortalAdministration::class)->interestQuery($interests,$actor);
        foreach ($interests->select('metadata')->cursor() as $row) {
            $metadata = json_decode($row->metadata ?? '{}', true);
            $code = $metadata['declared_origin_country_code'] ?? null;
            $key = is_string($code) && isset($names[$code]) ? $code : '';
            $groups[$key] = ($groups[$key] ?? 0) + 1;
        }
        $desk = [];
        if ($actor->can('manage-portal') && Schema::hasTable('desk_requests')) {
            foreach (DB::table('desk_requests')->whereNotIn('status', ['draft', 'cancelled'])->select('payload')->cursor() as $row) {
                $code = app(VirtualDesk::class)->decode($row->payload)['declared_origin_country_code'] ?? null;
                $key = is_string($code) && isset($names[$code]) ? $code : '';
                $desk[$key] = ($desk[$key] ?? 0) + 1;
            }
        }
        $businesses = [];
        if ($actor->can('manage-portal') && Schema::hasTable('existing_businesses')) {
            foreach (app(BusinessRepository::class)->query()->whereNotIn('status', ['draft', 'cancelled'])->cursor() as $business) {
                $code = $business->payload['declared_origin_country_code'] ?? null;
                $key = is_string($code) && isset($names[$code]) ? $code : '';
                $businesses[$key] = ($businesses[$key] ?? 0) + 1;
            }
        }
        // Distinct request collections; summing them could count the same investor twice.
        if ($origin !== null && $origin !== '') {
            $key = $origin === 'unknown' ? '' : $origin;
            $groups = array_intersect_key($groups, [$key => true]);
            $desk = array_intersect_key($desk, [$key => true]);
            $businesses = array_intersect_key($businesses, [$key => true]);
        }

        return ['interests' => $this->format($groups, $names), 'desk' => $this->format($desk, $names), 'businesses' => $this->format($businesses, $names)];
    }

    /** @param array<string, int> $counts
     * @param array<string, string> $names
     * @return list<array{code: string|null, name: string, count: int}> */
    private function format(array $counts, array $names): array
    {
        ksort($counts);

        return array_map(fn (string $code, int $count) => ['code' => $code ?: null, 'name' => $names[$code] ?? 'Não informado', 'count' => $count], array_keys($counts), array_values($counts));
    }
}