<?php

namespace Tests\Feature;

use App\Models\Admin;
use App\Services\AdminGoogle2fa;
use Illuminate\Foundation\Testing\RefreshDatabase;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

class AdminLoginTest extends TestCase
{
    use RefreshDatabase;

    #[Test]
    public function ajax_login_succeeds_and_sets_session(): void
    {
        $admin = Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
        ]);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()
            ->assertJson([
                'code' => 0,
                'msg' => '登录成功',
                'data' => route('admin.home'),
            ]);

        $this->assertAuthenticatedAs($admin, 'admin');
        $this->assertNotNull($admin->fresh()->last_ip);
    }

    #[Test]
    public function ajax_login_rejects_bad_password(): void
    {
        Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
        ]);

        $response = $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'wrongpass',
        ])->assertOk()
            ->assertJsonPath('code', 1);

        $this->assertStringContainsString('用户名或密码错误', (string) $response->json('msg'));
        $this->assertGuest('admin');
    }

    #[Test]
    public function disabled_admin_cannot_login(): void
    {
        Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 0,
        ]);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()
            ->assertJson(['code' => 1, 'msg' => '用户已被禁用']);

        $this->assertGuest('admin');
    }

    #[Test]
    public function google2fa_required_when_enabled(): void
    {
        $google2fa = app(AdminGoogle2fa::class);
        $secret = $google2fa->generateSecret();

        Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
            'google_auth_open' => 1,
            'google_secret' => $secret,
        ]);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()
            ->assertJson(['code' => 1, 'msg' => '请输入谷歌验证码！']);

        $this->assertGuest('admin');

        $code = (new \PragmaRX\Google2FA\Google2FA)->getCurrentOtp($secret);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
            'GACode' => $code,
        ])->assertOk()
            ->assertJson(['code' => 0]);

        $this->assertAuthenticated('admin');
    }

    #[Test]
    public function google2fa_bound_without_login_verify_skips_code(): void
    {
        $google2fa = app(AdminGoogle2fa::class);
        $secret = $google2fa->generateSecret();

        Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
            'google_auth_open' => 0,
            'google_secret' => $secret,
        ]);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()
            ->assertJson(['code' => 0]);

        $this->assertAuthenticated('admin');
    }

    #[Test]
    public function login_is_rate_limited_after_failures(): void
    {
        Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
        ]);

        for ($i = 0; $i < 5; $i++) {
            $this->post('/admin/login', [
                'username' => 'admin',
                'password' => 'bad-password',
            ])->assertOk()->assertJsonPath('code', 1);
        }

        $response = $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()
            ->assertJsonPath('code', 1);

        $this->assertStringContainsString('登陆失败次数过多', (string) $response->json('msg'));
    }

    #[Test]
    public function account_is_locked_after_five_failed_attempts(): void
    {
        $admin = Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
        ]);

        // Four attempts: account not yet locked, shows remaining attempts.
        for ($i = 4; $i >= 1; $i--) {
            $response = $this->post('/admin/login', [
                'username' => 'admin',
                'password' => 'bad-password',
            ])->assertOk()->assertJsonPath('code', 1);
            $this->assertStringContainsString('剩余 '.$i.' 次', (string) $response->json('msg'));
        }

        // Fifth attempt locks the account.
        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'bad-password',
        ])->assertOk()
            ->assertJsonPath('code', 1)
            ->assertJsonPath('msg', '密码连续输错 5 次，账号已被封锁，请联系超级管理员解除');

        $this->assertNotNull($admin->fresh()->locked_at);
        $this->assertTrue($admin->fresh()->isLocked());
        $this->assertSame(5, (int) $admin->fresh()->login_attempts);
    }

    #[Test]
    public function locked_account_cannot_login_with_correct_password(): void
    {
        $admin = Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
            'login_attempts' => 5,
            'locked_at' => now(),
        ]);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()
            ->assertJsonPath('code', 1)
            ->assertJsonPath('msg', '账号已被封锁（连续输错密码 5 次），请联系超级管理员解除');

        $this->assertGuest('admin');
    }

    #[Test]
    public function successful_login_clears_failed_attempts(): void
    {
        $admin = Admin::query()->create([
            'username' => 'admin',
            'password' => 'admin123',
            'status' => 1,
            'login_attempts' => 3,
        ]);

        $this->post('/admin/login', [
            'username' => 'admin',
            'password' => 'admin123',
        ])->assertOk()->assertJsonPath('code', 0);

        $this->assertAuthenticatedAs($admin, 'admin');
        $this->assertSame(0, (int) $admin->fresh()->login_attempts);
        $this->assertNull($admin->fresh()->locked_at);
    }

    #[Test]
    public function super_admin_can_unlock_account(): void
    {
        $super = Admin::query()->create([
            'username' => 'super',
            'password' => 'super123',
            'status' => 1,
            'is_super' => 1,
        ]);
        $locked = Admin::query()->create([
            'username' => 'locked',
            'password' => 'locked123',
            'status' => 1,
            'is_super' => 0,
            'login_attempts' => 5,
            'locked_at' => now(),
        ]);

        $this->actingAs($super, 'admin')
            ->postJson('/admin/system/admins/'.$locked->id.'/unlock')
            ->assertOk()
            ->assertJsonPath('code', 0)
            ->assertJsonPath('msg', '已解除封禁');

        $this->assertNull($locked->fresh()->locked_at);
        $this->assertSame(0, (int) $locked->fresh()->login_attempts);
        $this->assertFalse($locked->fresh()->isLocked());
    }

    #[Test]
    public function non_super_admin_cannot_unlock_account(): void
    {
        $regular = Admin::query()->create([
            'username' => 'regular',
            'password' => 'regular123',
            'status' => 1,
            'is_super' => 0,
        ]);
        $locked = Admin::query()->create([
            'username' => 'locked',
            'password' => 'locked123',
            'status' => 1,
            'is_super' => 0,
            'login_attempts' => 5,
            'locked_at' => now(),
        ]);

        $this->actingAs($regular, 'admin')
            ->postJson('/admin/system/admins/'.$locked->id.'/unlock')
            ->assertStatus(403)
            ->assertJsonPath('code', 1)
            ->assertJsonPath('msg', '需要超级管理员权限');

        $this->assertTrue($locked->fresh()->isLocked());
    }

    #[Test]
    public function unlock_returns_error_for_unlocked_account(): void
    {
        $super = Admin::query()->create([
            'username' => 'super',
            'password' => 'super123',
            'status' => 1,
            'is_super' => 1,
        ]);
        $normal = Admin::query()->create([
            'username' => 'normal',
            'password' => 'normal123',
            'status' => 1,
            'is_super' => 0,
        ]);

        $this->actingAs($super, 'admin')
            ->postJson('/admin/system/admins/'.$normal->id.'/unlock')
            ->assertOk()
            ->assertJsonPath('code', 1)
            ->assertJsonPath('msg', '该账号未被封禁');
    }
}