<?php

namespace Tests\Feature;

use App\Models\Customer;
use App\Models\Template;
use App\Services\Email\EmailTemplateRenderer;
use App\Services\Email\EmailTemplateService;
use App\Support\EmailScenarioRegistry;
use App\Support\MailGlobals;
use App\Support\MailPlaceholders;
use Database\Seeders\EmailTemplates\TemplateVariables;
use Database\Seeders\EmailTemplates\ServiceLifecycleTemplates;
use Database\Seeders\TemplateSeeder;
use Illuminate\Foundation\Testing\DatabaseTransactions;
use Tests\TestCase;

class TemplateSeederTest extends TestCase
{
    use DatabaseTransactions;

    public function test_seeder_covers_every_registered_scenario_with_required_variables(): void
    {
        $templates = collect(TemplateSeeder::templates())->keyBy('scenario');

        $this->assertEqualsCanonicalizing(array_keys(EmailScenarioRegistry::SCENARIOS), $templates->keys()->all());

        foreach (EmailScenarioRegistry::SCENARIOS as $scenario => $definition) {
            $item = $templates[$scenario];
            $this->assertSame([], EmailScenarioRegistry::missingVariables($definition['required_variables'], $item['subject'], $item['message']), $scenario);
            $this->assertStringContainsString('class="NoiDungKM"', $item['message'], $scenario);
            $this->assertStringContainsString('class="Footer"', $item['message'], $scenario);
        }
    }

    public function test_legacy_templates_use_the_shared_shell(): void
    {
        foreach (TemplateSeeder::legacyTemplates() as $item) {
            $this->assertNull(EmailScenarioRegistry::find($item['scenario']), $item['scenario']);
            $this->assertStringContainsString('class="Header"', $item['message'], $item['scenario']);
            $this->assertStringContainsString('class="Footer"', $item['message'], $item['scenario']);
        }
    }

    public function test_service_lifecycle_templates_are_seeded_once_as_marketing(): void
    {
        $items = ServiceLifecycleTemplates::all();
        $this->assertCount(39, $items);

        $this->seed(TemplateSeeder::class);
        $this->seed(TemplateSeeder::class);

        foreach ($items as $item) {
            $this->assertSame(1, Template::where('name', $item['name'])->count(), $item['name']);
            $template = Template::where('name', $item['name'])->first();
            $this->assertTrue($template->isMarketing(), $item['name']);
            $this->assertStringContainsString('class="Footer"', $template->message, $item['name']);
        }
    }

    public function test_generic_new_service_template_fills_customer_email_and_hides_empty_access_rows(): void
    {
        $this->seed(TemplateSeeder::class);
        $template = Template::where('name', 'Dịch vụ — Cấp mới dịch vụ (chưa có tài khoản)')->firstOrFail();
        $customer = new Customer(['fullname' => 'Nguyễn Văn A', 'email' => 'nva@example.com']);

        $values = collect($template->variables())->map(fn ($definition) => $definition['example'] ?? '')
            ->merge(MailGlobals::values())
            ->merge(MailPlaceholders::recipientValues($customer, $customer->email))
            ->merge(['account_pass' => 'Pass#2026'])
            ->all();
        $html = app(EmailTemplateRenderer::class)->render($template, $values)['html'];

        $this->assertStringContainsString('nva@example.com', $html);
        $this->assertStringContainsString('Pass#2026', $html);
        $this->assertStringContainsString(MailGlobals::values()['login_url'], $html);
        $this->assertStringNotContainsString('IP / Host', $html);
    }

    public function test_cloud_vps_new_service_templates_include_service_and_customer_account(): void
    {
        $this->seed(TemplateSeeder::class);
        $customer = new Customer(['fullname' => 'Nguyễn Văn A', 'email' => 'nva@example.com']);

        foreach (['đã có tài khoản' => false, 'chưa có tài khoản' => true] as $suffix => $showsPassword) {
            $template = Template::where('name', "Cloud VPS — Cấp mới dịch vụ (khách hàng {$suffix})")->firstOrFail();
            $values = collect($template->variables())->map(fn ($definition) => $definition['example'] ?? '')
                ->merge(MailGlobals::values())
                ->merge(MailPlaceholders::recipientValues($customer, $customer->email))
                ->merge(['account_pass' => 'Pass#2026', 'service_host' => '203.0.113.99'])
                ->all();
            $html = app(EmailTemplateRenderer::class)->render($template, $values)['html'];

            $this->assertStringContainsString('nva@example.com', $html, $suffix);
            $this->assertStringContainsString('203.0.113.99', $html, $suffix);
            $this->assertStringContainsString('Hệ điều hành', $html, $suffix);
            $this->assertSame($showsPassword, str_contains($html, 'Pass#2026'), $suffix);
        }
    }

    public function test_every_service_has_new_service_templates_by_account_state(): void
    {
        $this->seed(TemplateSeeder::class);
        $customer = new Customer(['fullname' => 'Nguyễn Văn A', 'email' => 'nva@example.com']);

        foreach (['SSL', 'Tên miền', 'Hosting', 'Cloud VPS'] as $label) {
            foreach (['đã có tài khoản', 'chưa có tài khoản'] as $suffix) {
                $template = Template::where('name', "{$label} — Cấp mới dịch vụ (khách hàng {$suffix})")->firstOrFail();
                $values = collect($template->variables())->map(fn ($definition) => $definition['example'] ?? '')
                    ->merge(MailGlobals::values())
                    ->merge(MailPlaceholders::recipientValues($customer, $customer->email))
                    ->all();
                $html = app(EmailTemplateRenderer::class)->render($template, $values)['html'];

                $this->assertStringContainsString('nva@example.com', $html, "{$label} {$suffix}");
                $this->assertStringContainsString(MailGlobals::values()['login_url'], $html, "{$label} {$suffix}");
                $this->assertStringNotContainsString('eKYC', $html, "{$label} {$suffix}");
            }
        }
    }

    public function test_every_placeholder_has_a_variable_definition(): void
    {
        foreach ([...TemplateSeeder::templates(), ...TemplateSeeder::legacyTemplates()] as $item) {
            $unknown = array_diff(MailPlaceholders::extract($item['subject'], $item['message']), array_keys(TemplateVariables::DEFINITIONS));
            $this->assertSame([], array_values($unknown), $item['scenario']);
        }
    }

    public function test_seeded_templates_render_and_rerun_updates_in_place(): void
    {
        $this->seed(TemplateSeeder::class);
        $countAfterFirstRun = Template::count();
        $this->seed(TemplateSeeder::class);
        $this->assertSame($countAfterFirstRun, Template::count());

        $service = app(EmailTemplateService::class);
        $renderer = app(EmailTemplateRenderer::class);

        foreach (array_keys(EmailScenarioRegistry::SCENARIOS) as $scenario) {
            if ($scenario === 'layout') {
                continue;
            }
            $template = $service->loadTemplate($scenario);
            $rendered = $renderer->render($template, []);

            $this->assertDoesNotMatchRegularExpression(MailPlaceholders::PATTERN, $rendered['subject'] . $rendered['html'], $scenario);
        }

        $this->assertSame('html', $service->loadTemplate('invoice_notification')->variables()['pay_button']['type']);
        $this->assertSame('string', $service->loadTemplate('manual_deposit_status')->variables()['status_label']['type']);
    }
}