<?php
require_once dirname(dirname(dirname(__DIR__))) . "/config/bootstrap.php";
use PHPUnit\Framework\TestCase;

class AdminControllerTest extends TestCase
{
    private PDO $mockPdo;
    private ConfigModel $config;
    private UserModel $user;
    private string $tempLogDir;

    protected function setUp(): void
    {
        // Set up temporary logging
        $this->tempLogDir = sys_get_temp_dir() . '/tkr_test_logs_' . uniqid();
        mkdir($this->tempLogDir . '/logs', 0777, true);
        Log::init($this->tempLogDir . '/logs/tkr.log');
        
        // Set up global config for logging level (DEBUG = 1)
        global $config;
        $config = new stdClass();
        $config->logLevel = 1; // Allow DEBUG level logs

        // Create mock PDO (needed for base constructor)
        $this->mockPdo = $this->createMock(PDO::class);
        
        // Create real config and user objects with mocked PDO
        $this->config = new ConfigModel($this->mockPdo);
        $this->config->siteTitle = 'Test Site';
        $this->config->siteDescription = 'Test Description';
        $this->config->baseUrl = 'https://example.com';
        $this->config->basePath = '/tkr';
        $this->config->itemsPerPage = 10;
        
        $this->user = new UserModel($this->mockPdo);
        $this->user->username = 'testuser';
        $this->user->displayName = 'Test User';
        $this->user->website = 'https://example.com';
    }

    protected function tearDown(): void
    {
        // Clean up temp directory
        if (is_dir($this->tempLogDir)) {
            $this->deleteDirectory($this->tempLogDir);
        }
    }

    private function deleteDirectory(string $dir): void
    {
        if (!is_dir($dir)) return;
        
        $files = array_diff(scandir($dir), ['.', '..']);
        foreach ($files as $file) {
            $path = $dir . '/' . $file;
            is_dir($path) ? $this->deleteDirectory($path) : unlink($path);
        }
        rmdir($dir);
    }

    public function testGetAdminDataRegularMode(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        $data = $controller->getAdminData(false);
        
        // Should return proper structure
        $this->assertArrayHasKey('config', $data);
        $this->assertArrayHasKey('user', $data);
        $this->assertArrayHasKey('isSetup', $data);
        
        // Should be the injected instances
        $this->assertSame($this->config, $data['config']);
        $this->assertSame($this->user, $data['user']);
        $this->assertFalse($data['isSetup']);
    }

    public function testGetAdminDataSetupMode(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        $data = $controller->getAdminData(true);
        
        // Should return proper structure
        $this->assertArrayHasKey('config', $data);
        $this->assertArrayHasKey('user', $data);
        $this->assertArrayHasKey('isSetup', $data);
        
        // Should be the injected instances
        $this->assertSame($this->config, $data['config']);
        $this->assertSame($this->user, $data['user']);
        $this->assertTrue($data['isSetup']);
    }

    public function testProcessSettingsSaveWithEmptyData(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        $result = $controller->processSettingsSave([], false);
        
        $this->assertFalse($result['success']);
        $this->assertContains('No data provided', $result['errors']);
    }

    public function testProcessSettingsSaveValidationErrors(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        
        // Test data with multiple validation errors
        $postData = [
            'username' => '',  // Missing username
            'display_name' => '',  // Missing display name
            'website' => 'invalid-url',  // Invalid URL
            'site_title' => '',  // Missing site title
            'base_url' => '',  // Missing base URL
            'base_path' => 'invalid',  // Invalid base path
            'items_per_page' => 100,  // Too high
            'password' => 'test123',
            'confirm_password' => 'different'  // Passwords don't match
        ];
        
        $result = $controller->processSettingsSave($postData, false);
        
        $this->assertFalse($result['success']);
        $this->assertNotEmpty($result['errors']);
        
        // Should have multiple validation errors
        $this->assertGreaterThan(5, count($result['errors']));
    }

    public function testProcessSettingsSaveValidData(): void
    {
        // Mock PDO to simulate successful database operations
        $mockStatement = $this->createMock(PDOStatement::class);
        $mockStatement->method('execute')->willReturn(true);
        $mockStatement->method('fetchColumn')->willReturn(1); // Existing record count
        $mockStatement->method('fetch')->willReturnOnConsecutiveCalls(
            [
                'site_title' => 'Updated Site',
                'site_description' => 'Updated Description',
                'base_url' => 'https://updated.com',
                'base_path' => '/updated',
                'items_per_page' => 15,
                'css_id' => null,
                'strict_accessibility' => true,
                'log_level' => 2
            ],
            [
                'username' => 'newuser',
                'display_name' => 'New User',
                'website' => 'https://example.com',
                'mood' => ''
            ]
        );

        $this->mockPdo->method('prepare')->willReturn($mockStatement);
        $this->mockPdo->method('query')->willReturn($mockStatement);

        // Create models with mocked PDO
        $config = new ConfigModel($this->mockPdo);
        $user = new UserModel($this->mockPdo);
        
        $controller = new AdminController($this->mockPdo, $config, $user);
        
        $postData = [
            'username' => 'newuser',
            'display_name' => 'New User',
            'website' => 'https://example.com',
            'site_title' => 'Updated Site',
            'site_description' => 'Updated Description',
            'base_url' => 'https://updated.com',
            'base_path' => '/updated',
            'items_per_page' => 15,
            'strict_accessibility' => 'on',
            'log_level' => 2
        ];
        
        $result = $controller->processSettingsSave($postData, false);
        
        $this->assertTrue($result['success']);
        $this->assertEmpty($result['errors']);
    }

    public function testProcessSettingsSaveWithPassword(): void
    {
        // Mock PDO for successful save operations
        $mockStatement = $this->createMock(PDOStatement::class);
        $mockStatement->method('execute')->willReturn(true);
        $mockStatement->method('fetchColumn')->willReturn(1);
        $mockStatement->method('fetch')->willReturnOnConsecutiveCalls(
            [
                'site_title' => 'Test Site',
                'site_description' => 'Test Description',
                'base_url' => 'https://example.com',
                'base_path' => '/tkr',
                'items_per_page' => 10,
                'css_id' => null,
                'strict_accessibility' => true,
                'log_level' => 2
            ],
            [
                'username' => 'testuser',
                'display_name' => 'Test User',
                'website' => '',
                'mood' => ''
            ]
        );

        // Verify password hash is called
        $this->mockPdo->expects($this->atLeastOnce())
                     ->method('prepare')
                     ->willReturn($mockStatement);
        
        $this->mockPdo->method('query')->willReturn($mockStatement);

        // Create models with mocked PDO
        $config = new ConfigModel($this->mockPdo);
        $user = new UserModel($this->mockPdo);
        
        $controller = new AdminController($this->mockPdo, $config, $user);
        
        $postData = [
            'username' => 'testuser',
            'display_name' => 'Test User',
            'site_title' => 'Test Site',
            'site_description' => 'Test Description',
            'base_url' => 'https://example.com',
            'base_path' => '/tkr',
            'items_per_page' => 10,
            'password' => 'newpassword',
            'confirm_password' => 'newpassword'
        ];
        
        $result = $controller->processSettingsSave($postData, false);
        
        $this->assertTrue($result['success']);
    }

    public function testProcessSettingsSaveDatabaseError(): void
    {
        // Mock PDO to throw exception on save
        $this->mockPdo->method('query')
                     ->willThrowException(new PDOException("Database error"));

        $config = new ConfigModel($this->mockPdo);
        $user = new UserModel($this->mockPdo);
        
        $controller = new AdminController($this->mockPdo, $config, $user);
        
        $postData = [
            'username' => 'testuser',
            'display_name' => 'Test User',
            'site_title' => 'Test Site',
            'site_description' => 'Test Description',
            'base_url' => 'https://example.com',
            'base_path' => '/tkr',
            'items_per_page' => 10
        ];
        
        $result = $controller->processSettingsSave($postData, false);
        
        $this->assertFalse($result['success']);
        $this->assertContains('Failed to save settings', $result['errors']);
    }

    public function testLoggingOnAdminPageLoad(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        $controller->getAdminData(false);
        
        // Check that logs were written
        $logFile = $this->tempLogDir . '/logs/tkr.log';
        $this->assertFileExists($logFile);
        
        $logContent = file_get_contents($logFile);
        $this->assertStringContainsString('Loading admin page', $logContent);
    }

    public function testLoggingOnSetupPageLoad(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        $controller->getAdminData(true);
        
        // Check that logs were written
        $logFile = $this->tempLogDir . '/logs/tkr.log';
        $this->assertFileExists($logFile);
        
        $logContent = file_get_contents($logFile);
        $this->assertStringContainsString('Loading admin page (setup mode)', $logContent);
    }

    public function testLoggingOnValidationErrors(): void
    {
        $controller = new AdminController($this->mockPdo, $this->config, $this->user);
        
        $postData = [
            'username' => '',  // Will cause validation error
            'display_name' => 'Test User',
            'site_title' => 'Test Site',
            'base_url' => 'https://example.com',
            'base_path' => '/tkr',
            'items_per_page' => 10
        ];
        
        $controller->processSettingsSave($postData, false);
        
        // Check that logs were written
        $logFile = $this->tempLogDir . '/logs/tkr.log';
        $this->assertFileExists($logFile);
        
        $logContent = file_get_contents($logFile);
        $this->assertStringContainsString('Settings validation failed', $logContent);
        $this->assertStringContainsString('Validation error: Username is required', $logContent);
    }

    public function testLoggingOnSuccessfulSave(): void
    {
        // Mock successful database operations
        $mockStatement = $this->createMock(PDOStatement::class);
        $mockStatement->method('execute')->willReturn(true);
        $mockStatement->method('fetchColumn')->willReturn(1);
        $mockStatement->method('fetch')->willReturnOnConsecutiveCalls(
            [
                'site_title' => 'Test Site',
                'site_description' => 'Test Description',
                'base_url' => 'https://example.com',
                'base_path' => '/tkr',
                'items_per_page' => 10,
                'css_id' => null,
                'strict_accessibility' => true,
                'log_level' => 2
            ],
            [
                'username' => 'testuser',
                'display_name' => 'Test User',
                'website' => '',
                'mood' => ''
            ]
        );

        $this->mockPdo->method('prepare')->willReturn($mockStatement);
        $this->mockPdo->method('query')->willReturn($mockStatement);

        $config = new ConfigModel($this->mockPdo);
        $user = new UserModel($this->mockPdo);
        
        $controller = new AdminController($this->mockPdo, $config, $user);
        
        $postData = [
            'username' => 'testuser',
            'display_name' => 'Test User',
            'site_title' => 'Test Site',
            'site_description' => 'Test Description',
            'base_url' => 'https://example.com',
            'base_path' => '/tkr',
            'items_per_page' => 10
        ];
        
        $controller->processSettingsSave($postData, false);
        
        // Check that logs were written
        $logFile = $this->tempLogDir . '/logs/tkr.log';
        $this->assertFileExists($logFile);
        
        $logContent = file_get_contents($logFile);
        $this->assertStringContainsString('Processing settings for user: testuser', $logContent);
        $this->assertStringContainsString('Site settings updated', $logContent);
        $this->assertStringContainsString('User profile updated', $logContent);
    }
}