<?php

declare(strict_types=1);

namespace Tests\Feature\Api\V1;

use App\Enums\EmailChangeStatus;
use App\Enums\EmailTemplateType;
use App\Jobs\SendTransactionalEmail;
use App\Mail\EmailChangedConfirmationMail;
use App\Models\EmailChangeRequest;
use App\Models\Organisation;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Mail;
use Illuminate\Support\Facades\Queue;
use Tests\TestCase;

class EmailChangeTest extends TestCase
{
    use RefreshDatabase;

    // ─── Self-Service Email Change ──────────────────────────────────────

    public function test_user_can_request_email_change(): void
    {
        Queue::fake();

        $user = User::factory()->create([
            'email' => 'oud@voorbeeld.nl',
            'password' => bcrypt('wachtwoord123'),
        ]);

        $response = $this->actingAs($user)->postJson('/api/v1/me/change-email', [
            'new_email' => 'nieuw@voorbeeld.nl',
            'password' => 'wachtwoord123',
            'app' => 'app',
        ]);

        $response->assertOk();

        $this->assertDatabaseHas('email_change_requests', [
            'user_id' => $user->id,
            'current_email' => 'oud@voorbeeld.nl',
            'new_email' => 'nieuw@voorbeeld.nl',
            'status' => 'pending',
        ]);

        Queue::assertPushed(SendTransactionalEmail::class, function ($job) {
            return $job->recipientEmail === 'nieuw@voorbeeld.nl'
                && $job->type === EmailTemplateType::EMAIL_VERIFICATION;
        });
    }

    public function test_email_change_requires_correct_password(): void
    {
        $user = User::factory()->create([
            'password' => bcrypt('wachtwoord123'),
        ]);

        $response = $this->actingAs($user)->postJson('/api/v1/me/change-email', [
            'new_email' => 'nieuw@voorbeeld.nl',
            'password' => 'foutwachtwoord',
            'app' => 'app',
        ]);

        $response->assertStatus(422);
        $response->assertJsonValidationErrors('password');
    }

    public function test_email_change_rejects_already_used_email(): void
    {
        User::factory()->create(['email' => 'bezet@voorbeeld.nl']);

        $user = User::factory()->create([
            'password' => bcrypt('wachtwoord123'),
        ]);

        $response = $this->actingAs($user)->postJson('/api/v1/me/change-email', [
            'new_email' => 'bezet@voorbeeld.nl',
            'password' => 'wachtwoord123',
            'app' => 'app',
        ]);

        $response->assertStatus(422);
        $response->assertJsonValidationErrors('new_email');
    }

    public function test_email_change_requires_authentication(): void
    {
        $response = $this->postJson('/api/v1/me/change-email', [
            'new_email' => 'nieuw@voorbeeld.nl',
            'password' => 'wachtwoord123',
            'app' => 'app',
        ]);

        $response->assertStatus(401);
    }

    public function test_duplicate_pending_request_cancels_old_one(): void
    {
        Mail::fake();

        $user = User::factory()->create([
            'email' => 'oud@voorbeeld.nl',
            'password' => bcrypt('wachtwoord123'),
        ]);

        // First request
        $this->actingAs($user)->postJson('/api/v1/me/change-email', [
            'new_email' => 'eerste@voorbeeld.nl',
            'password' => 'wachtwoord123',
            'app' => 'app',
        ]);

        $firstRequest = EmailChangeRequest::where('new_email', 'eerste@voorbeeld.nl')->first();
        $this->assertEquals('pending', $firstRequest->status->value);

        // Second request
        $this->actingAs($user)->postJson('/api/v1/me/change-email', [
            'new_email' => 'tweede@voorbeeld.nl',
            'password' => 'wachtwoord123',
            'app' => 'app',
        ]);

        $firstRequest->refresh();
        $this->assertEquals('cancelled', $firstRequest->status->value);

        $secondRequest = EmailChangeRequest::where('new_email', 'tweede@voorbeeld.nl')->first();
        $this->assertEquals('pending', $secondRequest->status->value);
    }

    // ─── Email Change Verification ──────────────────────────────────────

    public function test_verify_email_change_with_valid_token(): void
    {
        Mail::fake();

        $user = User::factory()->create(['email' => 'oud@voorbeeld.nl']);
        $plainToken = 'test-token-12345678901234567890123456789012345678901234567890123456';

        EmailChangeRequest::create([
            'user_id' => $user->id,
            'current_email' => 'oud@voorbeeld.nl',
            'new_email' => 'nieuw@voorbeeld.nl',
            'token' => hash('sha256', $plainToken),
            'requested_by_user_id' => $user->id,
            'status' => EmailChangeStatus::PENDING,
            'expires_at' => now()->addHours(24),
        ]);

        $response = $this->postJson('/api/v1/verify-email-change', [
            'token' => $plainToken,
        ]);

        $response->assertOk();

        $user->refresh();
        $this->assertEquals('nieuw@voorbeeld.nl', $user->email);

        Mail::assertQueued(EmailChangedConfirmationMail::class, function ($mail) {
            return $mail->hasTo('oud@voorbeeld.nl');
        });
    }

    public function test_verify_email_change_revokes_all_tokens(): void
    {
        Mail::fake();

        $user = User::factory()->create(['email' => 'oud@voorbeeld.nl']);
        $user->createToken('test-token');

        $plainToken = 'test-token-12345678901234567890123456789012345678901234567890123456';

        EmailChangeRequest::create([
            'user_id' => $user->id,
            'current_email' => 'oud@voorbeeld.nl',
            'new_email' => 'nieuw@voorbeeld.nl',
            'token' => hash('sha256', $plainToken),
            'requested_by_user_id' => $user->id,
            'status' => EmailChangeStatus::PENDING,
            'expires_at' => now()->addHours(24),
        ]);

        $this->postJson('/api/v1/verify-email-change', [
            'token' => $plainToken,
        ]);

        $this->assertCount(0, $user->tokens()->get());
    }

    public function test_verify_email_change_with_expired_token(): void
    {
        $user = User::factory()->create(['email' => 'oud@voorbeeld.nl']);
        $plainToken = 'test-token-12345678901234567890123456789012345678901234567890123456';

        EmailChangeRequest::create([
            'user_id' => $user->id,
            'current_email' => 'oud@voorbeeld.nl',
            'new_email' => 'nieuw@voorbeeld.nl',
            'token' => hash('sha256', $plainToken),
            'requested_by_user_id' => $user->id,
            'status' => EmailChangeStatus::PENDING,
            'expires_at' => now()->subHour(),
        ]);

        $response = $this->postJson('/api/v1/verify-email-change', [
            'token' => $plainToken,
        ]);

        $response->assertStatus(422);
        $response->assertJsonValidationErrors('token');
    }

    public function test_verify_email_change_with_invalid_token(): void
    {
        $response = $this->postJson('/api/v1/verify-email-change', [
            'token' => 'completely-invalid-token',
        ]);

        $response->assertStatus(422);
        $response->assertJsonValidationErrors('token');
    }

    public function test_verify_email_change_fails_if_email_taken_between_request_and_verify(): void
    {
        $user = User::factory()->create(['email' => 'oud@voorbeeld.nl']);
        $plainToken = 'test-token-12345678901234567890123456789012345678901234567890123456';

        EmailChangeRequest::create([
            'user_id' => $user->id,
            'current_email' => 'oud@voorbeeld.nl',
            'new_email' => 'nieuw@voorbeeld.nl',
            'token' => hash('sha256', $plainToken),
            'requested_by_user_id' => $user->id,
            'status' => EmailChangeStatus::PENDING,
            'expires_at' => now()->addHours(24),
        ]);

        // Another user takes the email
        User::factory()->create(['email' => 'nieuw@voorbeeld.nl']);

        $response = $this->postJson('/api/v1/verify-email-change', [
            'token' => $plainToken,
        ]);

        $response->assertStatus(422);
        $response->assertJsonValidationErrors('new_email');
    }

    // ─── Admin Email Change ─────────────────────────────────────────────

    public function test_admin_can_change_member_email(): void
    {
        Queue::fake();

        $organisation = Organisation::factory()->create();
        $admin = User::factory()->create();
        $organisation->users()->attach($admin, ['role' => 'org_admin']);

        $member = User::factory()->create(['email' => 'lid@voorbeeld.nl']);
        $organisation->users()->attach($member, ['role' => 'org_member']);

        $response = $this->actingAs($admin)->postJson(
            "/api/v1/organisations/{$organisation->id}/members/{$member->id}/change-email",
            ['new_email' => 'nieuw-lid@voorbeeld.nl'],
        );

        $response->assertOk();

        Queue::assertPushed(SendTransactionalEmail::class, function ($job) {
            return $job->recipientEmail === 'nieuw-lid@voorbeeld.nl'
                && $job->type === EmailTemplateType::EMAIL_VERIFICATION;
        });
    }

    public function test_non_admin_cannot_change_member_email(): void
    {
        $organisation = Organisation::factory()->create();
        $member = User::factory()->create();
        $organisation->users()->attach($member, ['role' => 'org_member']);

        $otherMember = User::factory()->create(['email' => 'ander@voorbeeld.nl']);
        $organisation->users()->attach($otherMember, ['role' => 'org_member']);

        $response = $this->actingAs($member)->postJson(
            "/api/v1/organisations/{$organisation->id}/members/{$otherMember->id}/change-email",
            ['new_email' => 'nieuw@voorbeeld.nl'],
        );

        $response->assertStatus(403);
    }

    public function test_unauthenticated_cannot_change_member_email(): void
    {
        $organisation = Organisation::factory()->create();
        $member = User::factory()->create();
        $organisation->users()->attach($member, ['role' => 'org_member']);

        $response = $this->postJson(
            "/api/v1/organisations/{$organisation->id}/members/{$member->id}/change-email",
            ['new_email' => 'nieuw@voorbeeld.nl'],
        );

        $response->assertStatus(401);
    }
}