<?php

declare(strict_types=1);

namespace App\Tests\Unit\Infrastructure\Order;

use App\Application\Order\ErpAdapterInterface;
use App\Domain\Order\Customer;
use App\Domain\Order\Repository\CustomerRepositoryInterface;
use App\Infrastructure\Order\CustomerResolver;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;

final class CustomerResolverTest extends TestCase
{
    private CustomerRepositoryInterface&MockObject $customerRepo;
    private ErpAdapterInterface&MockObject $erp;
    private CustomerResolver $resolver;

    protected function setUp(): void
    {
        $this->customerRepo = $this->createMock(CustomerRepositoryInterface::class);
        $this->erp = $this->createMock(ErpAdapterInterface::class);
        $this->resolver = new CustomerResolver($this->customerRepo, $this->erp);
    }

    public function test_stage_1_platform_id_match_returns_existing_customer_without_erp_call(): void
    {
        $existing = new Customer('Max Mustermann', 'max@test.de', ['street' => 'Musterstr 1', 'city' => 'Berlin', 'zip' => '10115']);
        $existing->addPlatformId('ebay', 'buyer123');

        $this->customerRepo
            ->method('findByPlatformId')
            ->with('ebay', 'buyer123')
            ->willReturn($existing);

        $this->erp->expects($this->never())->method('createCustomer');
        $this->customerRepo->expects($this->never())->method('save');

        $result = $this->resolver->resolve(
            'ebay', 'buyer123',
            'Max Mustermann', 'max@test.de',
            ['street' => 'Musterstr 1', 'city' => 'Berlin', 'zip' => '10115'],
        );

        $this->assertSame($existing, $result);
    }

    public function test_stage_2_address_match_adds_platform_id_and_saves(): void
    {
        $existing = new Customer('Max Mustermann', 'max@test.de', ['street' => 'Musterstr 1', 'city' => 'Berlin', 'zip' => '10115']);

        $this->customerRepo->method('findByPlatformId')->willReturn(null);
        $this->customerRepo
            ->method('findByMatchingKey')
            ->with($existing->getMatchingKey())
            ->willReturn($existing);
        $this->customerRepo->expects($this->once())->method('save')->with($existing);

        $this->erp->expects($this->never())->method('createCustomer');

        $result = $this->resolver->resolve(
            'ebay', 'buyer456',
            'Max Mustermann', 'max@test.de',
            ['street' => 'Musterstr 1', 'city' => 'Berlin', 'zip' => '10115'],
        );

        $this->assertSame($existing, $result);
        $this->assertSame('buyer456', $result->getPlatformId('ebay'));
    }

    public function test_no_match_creates_new_customer_via_erp(): void
    {
        $this->customerRepo->method('findByPlatformId')->willReturn(null);
        $this->customerRepo->method('findByMatchingKey')->willReturn(null);
        $this->customerRepo->expects($this->once())->method('save');
        $this->erp->method('createCustomer')->willReturn('CUST-99999');

        $result = $this->resolver->resolve(
            'ebay', 'newbuyer',
            'Neue Käuferin', 'neu@test.de',
            ['street' => 'Neustr 5', 'city' => 'München', 'zip' => '80333'],
        );

        $this->assertSame('CUST-99999', $result->getFrappeCustomerId());
        $this->assertSame('newbuyer', $result->getPlatformId('ebay'));
        $this->assertSame('Neue Käuferin', $result->getName());
    }
}