<?php

namespace Tests\Feature;

use App\Enumerations\CostUnitType;
use App\Enumerations\InvoiceStatus;
use App\Enumerations\InvoiceType;
use App\Models\CostUnit;
use App\Models\Invoice;
use App\Models\Tenant;
use App\Resources\InvoiceResource;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Tests\TestCase;

/**
 * Die Spalte "Zahlungsgrund" der Beleglisten. Sie liest nicht ein Feld, sondern das, was der
 * Einreiche-Flow je Abrechnungstyp gefüllt hat -- bei Fahrtkosten ist `type_other` leer.
 */
class InvoicePurposeTest extends TestCase
{
    use RefreshDatabase;

    private Tenant $tenant;

    private int $sequence = 0;

    protected function setUp(): void
    {
        parent::setUp();

        $this->tenant = Tenant::create([
            'slug' => 'wm',
            'name' => 'Wilde Möhre',
            'address_1' => 'Musterweg 1',
            'email' => 't@example.com',
            'email_finance' => 'finance@example.com',
            'url' => parse_url(config('app.url'), PHP_URL_HOST),
            'account_name' => 'Test e.V.',
            'account_iban' => 'DE00',
            'account_bic' => 'XY',
            'city' => 'Stadt',
            'postcode' => '00000',
            'invoice_prefix' => 'WM',
            'is_active_local_group' => true,
            'has_active_instance' => true,
        ]);

        app()->instance('tenant', $this->tenant);

        DB::table('cost_unit_types')->insert(['slug' => CostUnitType::COST_UNIT_TYPE_EVENT, 'name' => 'Veranstaltung']);
        DB::table('invoice_status')->insert(['slug' => InvoiceStatus::INVOICE_STATUS_NEW]);

        // Die Beitragserstattung bringt die Migration mit; die beiden anderen Typen nicht.
        foreach ([
            InvoiceType::INVOICE_TYPE_TRAVELLING => 'Fahrtkosten',
            InvoiceType::INVOICE_TYPE_OTHER => 'Sonstige Kosten',
        ] as $slug => $name) {
            DB::table('invoice_types')->insert([
                'slug' => $slug,
                'name' => $name,
                'sort_order' => 1,
                'selectable' => true,
                'counts_as_expense' => true,
            ]);
        }
    }

    private function makeCostUnit(): CostUnit
    {
        return CostUnit::create([
            'tenant' => $this->tenant->slug,
            'name' => 'Sommerlager',
            'type' => CostUnitType::COST_UNIT_TYPE_EVENT,
            'distance_allowance' => 0.25,
            'mail_on_new' => false,
            'allow_new' => true,
            'archived' => false,
        ]);
    }

    private function purposeOf(array $attributes): string
    {
        $this->sequence++;

        $invoice = Invoice::create(array_merge([
            'tenant' => $this->tenant->slug,
            'cost_unit_id' => $this->makeCostUnit()->id,
            'invoice_number' => sprintf('2026-%04d', $this->sequence),
            'status' => InvoiceStatus::INVOICE_STATUS_NEW,
            'contact_name' => 'Max Mustermann',
            'amount' => 42.0,
        ], $attributes));

        return new InvoiceResource($invoice)->toArray()['purpose'];
    }

    public function test_an_expense_shows_what_was_bought(): void
    {
        $this->assertSame('Bastelmaterial Sippenstunde', $this->purposeOf([
            'type' => InvoiceType::INVOICE_TYPE_OTHER,
            'type_other' => 'Bastelmaterial Sippenstunde',
        ]));
    }

    public function test_travel_costs_show_the_reason_and_who_travelled(): void
    {
        // `type_other` bleibt bei Fahrtkosten leer -- die Strecke landet in `travel_direction`.
        $this->assertSame('Landeslager — Max Mustermann', $this->purposeOf([
            'type' => InvoiceType::INVOICE_TYPE_TRAVELLING,
            'travel_direction' => 'Halle – Leipzig',
            'travel_reason' => 'Landeslager',
        ]));
    }

    public function test_travel_costs_without_a_reason_still_name_the_person(): void
    {
        // Altbestand: der Reisegrund wurde erst später zur Pflicht. Kein führendes " — ".
        $this->assertSame('Max Mustermann', $this->purposeOf([
            'type' => InvoiceType::INVOICE_TYPE_TRAVELLING,
            'travel_direction' => 'Halle – Leipzig',
        ]));
    }

    public function test_an_invoice_without_a_purpose_stays_empty(): void
    {
        // Beitragserstattungen entstehen ohne Freitext, ältere Belege haben keinen. Ein "--" würde in
        // der Liste nur Platz kosten.
        $this->assertSame('', $this->purposeOf([
            'type' => InvoiceType::INVOICE_TYPE_PARTICIPATION_REFUND,
        ]));
    }
}