<?php

use App\Models\Setting;
use App\Services\DhlProductResolver;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

beforeEach(function () {
    config([
        'dhl.config_source' => 'env',
        'dhl.international_countries' => ['AT', 'ES'],
    ]);
});

it('resolves domestic DHL products for Germany', function () {
    $resolver = new DhlProductResolver;

    expect($resolver->resolveForShipment('DE', 'V62KP'))->toMatchArray([
        'country_code' => 'DE',
        'dhl_country_code' => 'DEU',
        'product_code' => 'V62KP',
    ]);
});

it('suggests international parcel for Austria and Spain', function (string $countryCode) {
    $resolver = new DhlProductResolver;

    expect($resolver->resolveProductCode($countryCode, null, 'V01PAK'))->toBe('V53WPAK');
})->with([
    'austria' => 'AT',
    'spain' => 'ES',
]);

it('rejects unsupported destination countries', function () {
    (new DhlProductResolver)->resolveProductCode('FR', null, 'V01PAK');
})->throws(InvalidArgumentException::class, 'DHL-Versand in das Zielland FR ist aktuell nicht freigegeben.');

it('uses configured international destination countries', function () {
    $previousConfigSource = config('dhl.config_source');
    $previousCountries = config('dhl.international_countries');

    config([
        'dhl.config_source' => 'env',
        'dhl.international_countries' => ['AT', 'FR'],
    ]);

    try {
        $resolver = new DhlProductResolver;

        expect($resolver->resolveProductCode('FR', null, 'V01PAK'))->toBe('V53WPAK')
            ->and($resolver->getProductSuggestionsByCountry())->toMatchArray([
                'DE' => 'V01PAK',
                'FR' => 'V53WPAK',
            ]);
    } finally {
        config([
            'dhl.config_source' => $previousConfigSource,
            'dhl.international_countries' => $previousCountries,
        ]);
    }
});

it('uses saved DHL international countries even with env config priority', function () {
    $createdSettingsTable = ensureDhlSettingsTableForResolverTest();

    try {
        config([
            'dhl.config_source' => 'env',
            'dhl.international_countries' => ['AT'],
        ]);

        Setting::whereSlug('dhl_international_countries')->delete();
        Setting::setContentBySlug('dhl_international_countries', ['FR'], 'object');

        expect((new DhlProductResolver)->getSupportedInternationalCountries())->toBe(['FR']);
    } finally {
        Setting::whereSlug('dhl_international_countries')->delete();

        if ($createdSettingsTable) {
            Schema::drop('settings');
        }
    }
});

it('keeps an intentionally empty saved DHL international country list', function () {
    $createdSettingsTable = ensureDhlSettingsTableForResolverTest();

    try {
        config([
            'dhl.config_source' => 'env',
            'dhl.international_countries' => ['AT'],
        ]);

        Setting::whereSlug('dhl_international_countries')->delete();
        Setting::setContentBySlug('dhl_international_countries', [], 'object');

        expect((new DhlProductResolver)->getSupportedInternationalCountries())->toBe([]);
    } finally {
        Setting::whereSlug('dhl_international_countries')->delete();

        if ($createdSettingsTable) {
            Schema::drop('settings');
        }
    }
});

it('normalizes configurable international countries', function () {
    expect(DhlProductResolver::normalizeCountryCodeList([' at ', 'DE', 'XX', 'FR', 'AT']))->toBe(['AT', 'FR']);
});

function ensureDhlSettingsTableForResolverTest(): bool
{
    if (Schema::hasTable('settings')) {
        return false;
    }

    Schema::create('settings', function (Blueprint $table): void {
        $table->increments('id');
        $table->string('slug')->index();
        $table->string('type')->nullable();
        $table->json('object')->nullable();
        $table->text('full_text')->nullable();
        $table->text('text')->nullable();
        $table->integer('int')->nullable();
        $table->timestamps();
    });

    return true;
}

it('describes DHL product scope for preflight checks', function () {
    $resolver = new DhlProductResolver;

    expect($resolver->getProductScope('V01PAK'))->toBe('national')
        ->and($resolver->getProductScopeLabel('V01PAK'))->toBe('DHL Paket National')
        ->and($resolver->getProductScope('V53WPAK'))->toBe('international')
        ->and($resolver->getProductScopeLabel('V53WPAK'))->toBe('DHL Paket International');
});

it('rejects domestic products for international shipments when explicitly selected', function () {
    (new DhlProductResolver)->resolveProductCode('AT', 'V01PAK');
})->throws(InvalidArgumentException::class, 'Produkt V01PAK ist fuer DHL-Versand in das Zielland AT nicht erlaubt.');

it('does not fallback unknown countries to Germany', function () {
    (new DhlProductResolver)->toDhlCountryCode('XX');
})->throws(InvalidArgumentException::class, 'DHL-Laendercode XX wird nicht unterstuetzt.');

it('requires a billing number for the resolved product', function () {
    (new DhlProductResolver)->assertBillingNumber('V53WPAK', null);
})->throws(InvalidArgumentException::class, 'Keine DHL-Abrechnungsnummer fuer Produkt V53WPAK konfiguriert.');

it('maps legacy product codes onto the codes the DHL API accepts', function () {
    $resolver = new DhlProductResolver;

    expect($resolver->normalizeProductCode('V53PAK'))->toBe('V53WPAK')
        ->and($resolver->normalizeProductCode('v53pak'))->toBe('V53WPAK')
        ->and($resolver->normalizeProductCode('V01PAK'))->toBe('V01PAK')
        ->and($resolver->normalizeProductCode(null))->toBeNull();
});

it('accepts the legacy international code without rejecting the shipment', function () {
    expect((new DhlProductResolver)->resolveProductCode('AT', 'V53PAK'))->toBe('V53WPAK')
        ->and((new DhlProductResolver)->getProductScope('V53PAK'))->toBe('international');
});

it('offers legacy setting slugs as fallback candidates for a product', function () {
    $resolver = new DhlProductResolver;

    expect($resolver->getProductCodeCandidates('V53WPAK'))->toBe(['V53WPAK', 'V53PAK'])
        ->and($resolver->getProductCodeCandidates('V53PAK'))->toBe(['V53WPAK', 'V53PAK'])
        ->and($resolver->getProductCodeCandidates('V01PAK'))->toBe(['V01PAK']);
});

it('blocks destinations outside the EU customs union with an actionable message', function () {
    (new DhlProductResolver)->resolveProductCode('CH', null, 'V01PAK');
})->throws(
    InvalidArgumentException::class,
    'DHL-Versand in das Zielland CH benoetigt Zolldaten (ExportDocument/CN23), die das Modul noch nicht erzeugt.'
);

it('keeps customs-required countries out of the supported list even when configured', function () {
    $previousConfigSource = config('dhl.config_source');
    $previousCountries = config('dhl.international_countries');

    config([
        'dhl.config_source' => 'env',
        'dhl.international_countries' => ['AT', 'CH', 'GB'],
    ]);

    try {
        $resolver = new DhlProductResolver;

        expect($resolver->getSupportedInternationalCountries())->toBe(['AT'])
            ->and($resolver->getAllowedProductCodesForCountry('CH'))->toBe([]);
    } finally {
        config([
            'dhl.config_source' => $previousConfigSource,
            'dhl.international_countries' => $previousCountries,
        ]);
    }
});