<?php

namespace App\Console\Commands;

use App\Models\Barangay;
use App\Models\CityMunicipality;
use App\Models\Province;
use App\Models\Region;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use MatanYadaev\EloquentSpatial\Objects\Point;
use MatanYadaev\EloquentSpatial\Objects\Polygon;
use Throwable;

class PsgcImport extends Command
{
    protected $signature = 'psgc:import {file : Path to PSGC JSON file}';

    protected $description = 'Import PSGC hierarchy (regions/provinces/cities/barangays) from JSON';

    public function handle(): int
    {
        $path = $this->argument('file');

        if (! is_file($path)) {
            $this->error("File not found: {$path}");

            return self::FAILURE;
        }

        $payload = json_decode((string) file_get_contents($path), true);

        if (! is_array($payload)) {
            $this->error('Invalid JSON');

            return self::FAILURE;
        }

        $counts = ['regions' => 0, 'provinces' => 0, 'cities' => 0, 'barangays' => 0];

        try {
            DB::transaction(function () use ($payload, &$counts) {
                foreach ($payload['regions'] ?? [] as $r) {
                    Region::updateOrCreate(
                        ['psgc_code' => $r['psgc_code']],
                        [
                            'code' => $r['code'],
                            'name' => $r['name'],
                            'island_group' => $r['island_group'] ?? null,
                        ],
                    );
                    $counts['regions']++;
                }

                foreach ($payload['provinces'] ?? [] as $p) {
                    $region = Region::where('psgc_code', $p['region_psgc'])->firstOrFail();
                    Province::updateOrCreate(
                        ['psgc_code' => $p['psgc_code']],
                        [
                            'code' => $p['code'],
                            'name' => $p['name'],
                            'region_id' => $region->id,
                            'income_classification' => $p['income_classification'] ?? null,
                        ],
                    );
                    $counts['provinces']++;
                }

                foreach ($payload['cities_municipalities'] ?? [] as $c) {
                    $province = Province::where('psgc_code', $c['province_psgc'])->firstOrFail();
                    CityMunicipality::updateOrCreate(
                        ['psgc_code' => $c['psgc_code']],
                        [
                            'code' => $c['code'],
                            'name' => $c['name'],
                            'province_id' => $province->id,
                            'type' => $c['type'] ?? 'municipality',
                            'is_capital' => (bool) ($c['is_capital'] ?? false),
                            'classification' => $c['classification'] ?? null,
                        ],
                    );
                    $counts['cities']++;
                }

                foreach ($payload['barangays'] ?? [] as $b) {
                    $city = CityMunicipality::where('psgc_code', $b['city_psgc'])->firstOrFail();
                    $boundary = isset($b['boundary_geojson'])
                        ? Polygon::fromJson(json_encode($b['boundary_geojson']))
                        : null;
                    $centroid = isset($b['centroid'])
                        ? new Point((float) $b['centroid']['lat'], (float) $b['centroid']['lng'], 4326)
                        : null;

                    Barangay::updateOrCreate(
                        ['psgc_code' => $b['psgc_code']],
                        [
                            'code' => $b['code'],
                            'name' => $b['name'],
                            'city_municipality_id' => $city->id,
                            'urban_rural' => $b['urban_rural'] ?? Barangay::URBAN_RURAL_UNKNOWN,
                            'population' => $b['population'] ?? null,
                            'boundary' => $boundary,
                            'centroid' => $centroid,
                        ],
                    );
                    $counts['barangays']++;
                }
            });
        } catch (Throwable $e) {
            $this->error('Import failed: '.$e->getMessage());

            return self::FAILURE;
        }

        $this->info(sprintf(
            'Imported %d regions, %d provinces, %d cities, %d barangays',
            $counts['regions'],
            $counts['provinces'],
            $counts['cities'],
            $counts['barangays'],
        ));

        return self::SUCCESS;
    }
}