<?php

namespace Tests\Feature;

use App\Models\Dictionary\Area;
use App\Models\Dictionary\District;
use App\Models\Role;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\Storage;
use Tests\TestCase;

class AdminAreaControllerTest extends TestCase
{
    use RefreshDatabase;

    protected $seed = true;

    private User $adminUser;
    private User $managerUser;
    private District $district;

    protected function setUp(): void
    {
        parent::setUp();

        $this->adminUser = User::factory()->create(['role' => Role::ADMIN]);
        $this->managerUser = User::factory()->create(['role' => Role::MANAGER]);
        $this->district = District::factory()->create(['shortname' => 'ЦАО', 'name' => 'Центральный']);
    }

    // ==================== Authentication & Authorization ====================

    public function test_guest_cannot_access_areas_index(): void
    {
        $response = $this->get(route('admin.area.index'));

        $response->assertRedirect(route('login'));
    }

    public function test_manager_cannot_access_areas_index(): void
    {
        $response = $this->actingAs($this->managerUser)
            ->get(route('admin.area.index'));

        $response->assertStatus(403);
    }

    public function test_admin_can_access_areas_index(): void
    {
        $response = $this->actingAs($this->adminUser)
            ->get(route('admin.area.index'));

        $response->assertStatus(200);
        $response->assertViewIs('admin.areas.index');
    }

    // ==================== Index ====================

    public function test_areas_index_displays_areas(): void
    {
        $area = Area::factory()->create([
            'name' => 'Тестовый район',
            'district_id' => $this->district->id,
        ]);

        $response = $this->actingAs($this->adminUser)
            ->get(route('admin.area.index'));

        $response->assertStatus(200);
        $response->assertSee('Тестовый район');
    }

    public function test_areas_index_can_filter_by_district(): void
    {
        $area1 = Area::factory()->create([
            'name' => 'Район ЦАО',
            'district_id' => $this->district->id,
        ]);

        $otherDistrict = District::factory()->create(['shortname' => 'САО']);
        $area2 = Area::factory()->create([
            'name' => 'Район САО',
            'district_id' => $otherDistrict->id,
        ]);

        $response = $this->actingAs($this->adminUser)
            ->get(route('admin.area.index', ['district_id' => $this->district->id]));

        $response->assertStatus(200);
        $response->assertSee('Район ЦАО');
        $response->assertDontSee('Район САО');
    }

    // ==================== Show ====================

    public function test_admin_can_view_area_edit_form(): void
    {
        $area = Area::factory()->create(['district_id' => $this->district->id]);

        $response = $this->actingAs($this->adminUser)
            ->get(route('admin.area.show', $area->id));

        $response->assertStatus(200);
        $response->assertViewIs('admin.areas.edit');
        $response->assertSee($area->name);
    }

    public function test_manager_cannot_view_area_edit_form(): void
    {
        $area = Area::factory()->create(['district_id' => $this->district->id]);

        $response = $this->actingAs($this->managerUser)
            ->get(route('admin.area.show', $area->id));

        $response->assertStatus(403);
    }

    // ==================== Store ====================

    public function test_admin_can_create_new_area(): void
    {
        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.store'), [
                'name' => 'Тестовый район',
                'district_id' => $this->district->id,
            ]);

        $response->assertRedirect(route('admin.area.index'));
        $this->assertDatabaseHas('areas', [
            'name' => 'Тестовый район',
            'district_id' => $this->district->id,
        ]);
    }

    public function test_admin_can_update_existing_area(): void
    {
        $area = Area::factory()->create([
            'name' => 'Старое название',
            'district_id' => $this->district->id,
        ]);

        $newDistrict = District::factory()->create();

        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.store'), [
                'id' => $area->id,
                'name' => 'Новое название',
                'district_id' => $newDistrict->id,
            ]);

        $response->assertRedirect(route('admin.area.index'));
        $this->assertDatabaseHas('areas', [
            'id' => $area->id,
            'name' => 'Новое название',
            'district_id' => $newDistrict->id,
        ]);
    }

    public function test_store_area_requires_name(): void
    {
        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.store'), [
                'district_id' => $this->district->id,
            ]);

        $response->assertSessionHasErrors('name');
    }

    public function test_store_area_requires_district_id(): void
    {
        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.store'), [
                'name' => 'Тестовый район',
            ]);

        $response->assertSessionHasErrors('district_id');
    }

    public function test_store_area_validates_district_exists(): void
    {
        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.store'), [
                'name' => 'Тестовый район',
                'district_id' => 99999,
            ]);

        $response->assertSessionHasErrors('district_id');
    }

    // ==================== Destroy ====================

    public function test_admin_can_delete_area(): void
    {
        $area = Area::factory()->create(['district_id' => $this->district->id]);

        $response = $this->actingAs($this->adminUser)
            ->delete(route('admin.area.destroy', $area->id));

        $response->assertRedirect(route('admin.area.index'));
        $this->assertSoftDeleted('areas', ['id' => $area->id]);
    }

    // ==================== Undelete ====================

    public function test_admin_can_restore_deleted_area(): void
    {
        $area = Area::factory()->create(['district_id' => $this->district->id]);
        $area->delete();

        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.undelete', $area->id));

        $response->assertRedirect(route('admin.area.index'));
        $this->assertDatabaseHas('areas', [
            'id' => $area->id,
            'deleted_at' => null,
        ]);
    }

    // ==================== Export ====================

    public function test_admin_can_export_areas(): void
    {
        Area::factory()->count(3)->create(['district_id' => $this->district->id]);

        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.export'));

        $response->assertRedirect();
    }

    // ==================== Import ====================

    public function test_admin_can_import_areas(): void
    {
        Storage::fake('upload');

        $file = $this->createTestAreasXlsx();

        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.import'), [
                'import_file' => $file,
            ]);

        $response->assertRedirect(route('admin.area.index'));
    }

    public function test_import_requires_file(): void
    {
        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.import'), []);

        $response->assertSessionHasErrors('import_file');
    }

    public function test_import_requires_xlsx_file(): void
    {
        $file = UploadedFile::fake()->create('test.txt', 100, 'text/plain');

        $response = $this->actingAs($this->adminUser)
            ->post(route('admin.area.import'), [
                'import_file' => $file,
            ]);

        $response->assertSessionHasErrors('import_file');
    }

    // ==================== Helper Methods ====================

    private function createTestAreasXlsx(): UploadedFile
    {
        $spreadsheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
        $sheet = $spreadsheet->getActiveSheet();

        $sheet->setCellValue('A1', 'ID');
        $sheet->setCellValue('B1', 'Название');
        $sheet->setCellValue('C1', 'Округ (сокращение)');
        $sheet->setCellValue('D1', 'ID округа');

        $sheet->setCellValue('A2', '');
        $sheet->setCellValue('B2', 'Тестовый район');
        $sheet->setCellValue('C2', 'ЦАО');
        $sheet->setCellValue('D2', $this->district->id);

        $tempPath = sys_get_temp_dir() . '/test_areas_' . uniqid() . '.xlsx';
        $writer = new \PhpOffice\PhpSpreadsheet\Writer\Xlsx($spreadsheet);
        $writer->save($tempPath);

        return new UploadedFile(
            $tempPath,
            'test_areas.xlsx',
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            null,
            true
        );
    }
}