<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Tests\Unit\Payment;

use Brain\Monkey\Functions;
use Unsupervised\Schedular\Payment\PaymentDueEmailTemplate;
use Unsupervised\Schedular\Payment\PaymentEmailController;
use Unsupervised\Schedular\Tests\Unit\TestCase;

class PaymentEmailControllerTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        Functions\when('get_option')->alias(static fn (string $name, $default = '') => '');
    }

    public function testRenderSampleUsesDefaultTemplateWhenDraftBlank(): void
    {
        $stored = new PaymentDueEmailTemplate();

        $rendered = PaymentEmailController::renderSample($stored, '', '', '');

        self::assertSame(PaymentDueEmailTemplate::defaultSubject(), $rendered['subject']);
        // Default body lists both sample items with a grand total and the sample
        // reference/credit blocks resolved.
        self::assertStringContainsString('Piano lesson', $rendered['body']);
        self::assertStringContainsString('Guitar lesson', $rendered['body']);
        self::assertStringContainsString('Jul 15, 2026', $rendered['body']);
        self::assertStringContainsString('Total due: CAD 55.00', $rendered['body']); // 75 - 20 credit
        self::assertStringContainsString('REF12345', $rendered['body']);
        self::assertStringContainsString('pay@studio.test', $rendered['body']);
    }

    public function testRenderSampleUsesDraftOverStored(): void
    {
        $stored = new PaymentDueEmailTemplate();

        $rendered = PaymentEmailController::renderSample(
            $stored,
            'Draft: {total_due}',
            "Hello {student_name}\n{items}",
            '> {label} {amount}'
        );

        self::assertSame('Draft: CAD 55.00', $rendered['subject']);
        self::assertStringContainsString('Hello ' . PaymentEmailController::sampleStudentName(), $rendered['body']);
        self::assertStringContainsString('> Piano lesson 35.00', $rendered['body']);
    }

    public function testSampleItemsAreTwoLessons(): void
    {
        $items = PaymentEmailController::sampleItems();

        self::assertCount(2, $items);
        self::assertSame(35.0, $items[0]['amount']);
        self::assertSame(40.0, $items[1]['amount']);
    }
}