<?php

namespace Database\Seeders;

use App\Models\Barangay;
use App\Models\CityMunicipality;
use App\Models\Province;
use App\Models\Region;
use Illuminate\Database\Seeder;
use MatanYadaev\EloquentSpatial\Objects\LineString;
use MatanYadaev\EloquentSpatial\Objects\Point;
use MatanYadaev\EloquentSpatial\Objects\Polygon;

/**
 * PSGC sample for development. Includes:
 * - All 17 official PH regions
 * - The 4 NCR districts (modeled as virtual provinces)
 * - All 17 NCR cities/municipalities
 * - A handful of NCR barangays with rough rectangular boundaries for
 *   point-in-polygon resolution tests
 *
 * Replace with the full PSA dataset via `php artisan psgc:import <file>`
 * for production.
 */
class SamplePsgcSeeder extends Seeder
{
    public function run(): void
    {
        $this->seedRegions();
        $this->seedNcrProvincesAndCities();
        $this->seedNcrSampleBarangays();
    }

    private function seedRegions(): void
    {
        $regions = [
            ['psgc_code' => '010000000', 'code' => 'R01', 'name' => 'Ilocos Region',                  'island_group' => 'Luzon'],
            ['psgc_code' => '020000000', 'code' => 'R02', 'name' => 'Cagayan Valley',                 'island_group' => 'Luzon'],
            ['psgc_code' => '030000000', 'code' => 'R03', 'name' => 'Central Luzon',                  'island_group' => 'Luzon'],
            ['psgc_code' => '040000000', 'code' => 'R4A', 'name' => 'CALABARZON',                     'island_group' => 'Luzon'],
            ['psgc_code' => '170000000', 'code' => 'R4B', 'name' => 'MIMAROPA',                       'island_group' => 'Luzon'],
            ['psgc_code' => '050000000', 'code' => 'R05', 'name' => 'Bicol Region',                   'island_group' => 'Luzon'],
            ['psgc_code' => '060000000', 'code' => 'R06', 'name' => 'Western Visayas',                'island_group' => 'Visayas'],
            ['psgc_code' => '070000000', 'code' => 'R07', 'name' => 'Central Visayas',                'island_group' => 'Visayas'],
            ['psgc_code' => '080000000', 'code' => 'R08', 'name' => 'Eastern Visayas',                'island_group' => 'Visayas'],
            ['psgc_code' => '090000000', 'code' => 'R09', 'name' => 'Zamboanga Peninsula',            'island_group' => 'Mindanao'],
            ['psgc_code' => '100000000', 'code' => 'R10', 'name' => 'Northern Mindanao',              'island_group' => 'Mindanao'],
            ['psgc_code' => '110000000', 'code' => 'R11', 'name' => 'Davao Region',                   'island_group' => 'Mindanao'],
            ['psgc_code' => '120000000', 'code' => 'R12', 'name' => 'SOCCSKSARGEN',                   'island_group' => 'Mindanao'],
            ['psgc_code' => '130000000', 'code' => 'NCR', 'name' => 'National Capital Region',        'island_group' => 'Luzon'],
            ['psgc_code' => '140000000', 'code' => 'CAR', 'name' => 'Cordillera Administrative Region', 'island_group' => 'Luzon'],
            ['psgc_code' => '160000000', 'code' => 'R13', 'name' => 'Caraga',                         'island_group' => 'Mindanao'],
            ['psgc_code' => '190000000', 'code' => 'BARMM', 'name' => 'Bangsamoro Autonomous Region in Muslim Mindanao', 'island_group' => 'Mindanao'],
        ];

        foreach ($regions as $r) {
            Region::updateOrCreate(['psgc_code' => $r['psgc_code']], $r);
        }
    }

    private function seedNcrProvincesAndCities(): void
    {
        $ncr = Region::where('psgc_code', '130000000')->firstOrFail();

        $districts = [
            ['psgc_code' => '133900000', 'code' => 'NCR-1', 'name' => 'NCR, City of Manila, First District'],
            ['psgc_code' => '137400000', 'code' => 'NCR-2', 'name' => 'NCR, Second District'],
            ['psgc_code' => '137500000', 'code' => 'NCR-3', 'name' => 'NCR, Third District'],
            ['psgc_code' => '137600000', 'code' => 'NCR-4', 'name' => 'NCR, Fourth District'],
        ];
        foreach ($districts as $d) {
            Province::updateOrCreate(['psgc_code' => $d['psgc_code']], array_merge($d, ['region_id' => $ncr->id]));
        }

        $manilaDist = Province::where('code', 'NCR-1')->first()->id;
        $secondDist = Province::where('code', 'NCR-2')->first()->id;
        $thirdDist = Province::where('code', 'NCR-3')->first()->id;
        $fourthDist = Province::where('code', 'NCR-4')->first()->id;

        $cities = [
            ['psgc_code' => '133900000', 'code' => 'MNL',  'name' => 'City of Manila',     'province_id' => $manilaDist, 'is_capital' => true],
            ['psgc_code' => '137401000', 'code' => 'MND',  'name' => 'City of Mandaluyong', 'province_id' => $secondDist],
            ['psgc_code' => '137402000', 'code' => 'MRK',  'name' => 'City of Marikina',   'province_id' => $secondDist],
            ['psgc_code' => '137403000', 'code' => 'PSG',  'name' => 'Pasig City',         'province_id' => $secondDist],
            ['psgc_code' => '137404000', 'code' => 'QC',   'name' => 'Quezon City',        'province_id' => $secondDist],
            ['psgc_code' => '137405000', 'code' => 'SJN',  'name' => 'San Juan City',      'province_id' => $secondDist],
            ['psgc_code' => '137501000', 'code' => 'CAL',  'name' => 'Caloocan City',      'province_id' => $thirdDist],
            ['psgc_code' => '137502000', 'code' => 'MAL',  'name' => 'Malabon City',       'province_id' => $thirdDist],
            ['psgc_code' => '137503000', 'code' => 'NAV',  'name' => 'Navotas City',       'province_id' => $thirdDist],
            ['psgc_code' => '137504000', 'code' => 'VAL',  'name' => 'Valenzuela City',    'province_id' => $thirdDist],
            ['psgc_code' => '137601000', 'code' => 'LSP',  'name' => 'Las Piñas City',     'province_id' => $fourthDist],
            ['psgc_code' => '137602000', 'code' => 'MKT',  'name' => 'Makati City',        'province_id' => $fourthDist],
            ['psgc_code' => '137603000', 'code' => 'MUN',  'name' => 'Muntinlupa City',    'province_id' => $fourthDist],
            ['psgc_code' => '137604000', 'code' => 'PRQ',  'name' => 'Parañaque City',     'province_id' => $fourthDist],
            ['psgc_code' => '137605000', 'code' => 'PSY',  'name' => 'Pasay City',         'province_id' => $fourthDist],
            ['psgc_code' => '137606000', 'code' => 'PAT',  'name' => 'Pateros',            'province_id' => $fourthDist, 'type' => 'municipality'],
            ['psgc_code' => '137607000', 'code' => 'TAG',  'name' => 'Taguig City',        'province_id' => $fourthDist],
        ];
        foreach ($cities as $c) {
            CityMunicipality::updateOrCreate(['psgc_code' => $c['psgc_code']], array_merge([
                'is_capital' => false,
                'type' => 'city',
            ], $c));
        }
    }

    private function seedNcrSampleBarangays(): void
    {
        $qc = CityMunicipality::where('code', 'QC')->firstOrFail();
        $manila = CityMunicipality::where('code', 'MNL')->firstOrFail();
        $makati = CityMunicipality::where('code', 'MKT')->firstOrFail();

        $samples = [
            ['city' => $qc,     'psgc_code' => '137404036', 'code' => 'QC-DLM', 'name' => 'Diliman',        'lat' => 14.6539, 'lng' => 121.0685],
            ['city' => $qc,     'psgc_code' => '137404029', 'code' => 'QC-CMW', 'name' => 'Commonwealth',   'lat' => 14.6970, 'lng' => 121.0780],
            ['city' => $qc,     'psgc_code' => '137404014', 'code' => 'QC-BPA', 'name' => 'Bagong Pag-asa', 'lat' => 14.6493, 'lng' => 121.0386],
            ['city' => $manila, 'psgc_code' => '133900100', 'code' => 'MNL-ERM', 'name' => 'Ermita',        'lat' => 14.5824, 'lng' => 120.9831],
            ['city' => $manila, 'psgc_code' => '133900200', 'code' => 'MNL-MLT', 'name' => 'Malate',        'lat' => 14.5722, 'lng' => 120.9846],
            ['city' => $makati, 'psgc_code' => '137602100', 'code' => 'MKT-PBL', 'name' => 'Poblacion',     'lat' => 14.5648, 'lng' => 121.0306],
            ['city' => $makati, 'psgc_code' => '137602200', 'code' => 'MKT-BAR', 'name' => 'Bel-Air',       'lat' => 14.5575, 'lng' => 121.0200],
        ];

        foreach ($samples as $b) {
            Barangay::updateOrCreate(
                ['psgc_code' => $b['psgc_code']],
                [
                    'code' => $b['code'],
                    'name' => $b['name'],
                    'city_municipality_id' => $b['city']->id,
                    'urban_rural' => Barangay::URBAN,
                    'boundary' => $this->boxAround($b['lat'], $b['lng'], 0.005),
                    'centroid' => new Point($b['lat'], $b['lng'], 4326),
                ],
            );
        }
    }

    private function boxAround(float $lat, float $lng, float $half): Polygon
    {
        $points = [
            new Point($lat - $half, $lng - $half, 4326),
            new Point($lat - $half, $lng + $half, 4326),
            new Point($lat + $half, $lng + $half, 4326),
            new Point($lat + $half, $lng - $half, 4326),
            new Point($lat - $half, $lng - $half, 4326),
        ];

        return new Polygon([new LineString($points)], 4326);
    }
}