<?php

namespace App\Console\Commands;

use App\Models\Search;
use App\Services\PostcodeService;
use Illuminate\Console\Command;

class BackfillSearchAreas extends Command
{
    protected $signature = 'searches:backfill-areas {--limit=0 : Max distinct areas to resolve this run (0 = no limit)}';

    protected $description = 'Reverse-geocode searches that have no area_label yet';

    public function handle(PostcodeService $postcodes): int
    {
        $limit = (int) $this->option('limit');

        $buckets = Search::query()
            ->whereNull('area_label')
            ->select('lat_bucket', 'lng_bucket')
            ->distinct()
            ->when($limit > 0, fn ($query) => $query->limit($limit))
            ->get();

        if ($buckets->isEmpty()) {
            $this->info('No searches need an area label.');

            return self::SUCCESS;
        }

        $resolved = 0;
        $rowsUpdated = 0;

        foreach ($buckets as $bucket) {
            $label = $postcodes->reverseResolve((float) $bucket->lat_bucket, (float) $bucket->lng_bucket);

            if ($label === null) {
                continue;
            }

            $resolved++;
            $rowsUpdated += Search::query()
                ->whereNull('area_label')
                ->where('lat_bucket', $bucket->lat_bucket)
                ->where('lng_bucket', $bucket->lng_bucket)
                ->update(['area_label' => $label]);
        }

        $this->info("Resolved {$resolved} of {$buckets->count()} areas, updated {$rowsUpdated} search rows.");

        return self::SUCCESS;
    }
}