<?php

use PHPUnit\Framework\TestCase;

/**
 * Test UserModel database operations
 */
class UserModelTest extends TestCase
{
    private $userModel;
    private $testUserId;

    protected function setUp(): void
    {
        // Set up in-memory database for testing
        TestDatabaseHelper::setupTestSchema();
        $this->userModel = new UserModel();
        $this->testUserId = 'test_user_' . bin2hex(random_bytes(8));
    }

    protected function tearDown(): void
    {
        // Clean up after each test
        $pdo = TestDatabaseHelper::getTestPdo();
        $pdo->exec('DELETE FROM users');
        $pdo->exec('DELETE FROM chat_messages');
        $pdo->exec('DELETE FROM active_viewers');
        $pdo->exec('DELETE FROM banned_users');
    }

    public function testCreateOrUpdateNewUser()
    {
        $userData = [
            'nickname' => 'TestUser',
            'ip_address' => '192.168.1.100',
            'session_id' => 'session_123456'
        ];

        $result = $this->userModel->createOrUpdate($this->testUserId, $userData);

        $this->assertNotFalse($result);

        // Verify user was created
        $user = $this->userModel->getByUserId($this->testUserId);
        $this->assertNotFalse($user);
        $this->assertEquals($this->testUserId, $user['user_id']);
        $this->assertEquals('TestUser', $user['nickname']);
        $this->assertEquals('192.168.1.100', $user['ip_address']);
    }

    public function testCreateOrUpdateExistingUser()
    {
        // First create user
        $this->userModel->createOrUpdate($this->testUserId, ['nickname' => 'OriginalName']);

        // Update existing user
        $this->userModel->createOrUpdate($this->testUserId, ['nickname' => 'UpdatedName']);

        $user = $this->userModel->getByUserId($this->testUserId);
        $this->assertEquals('UpdatedName', $user['nickname']);
    }

    public function testGetActiveUsers()
    {
        // Create test users
        $userId1 = 'active_user_1';
        $userId2 = 'active_user_2';
        $userId3 = 'inactive_user';

        // Add active users
        $this->userModel->createOrUpdate($userId1, ['nickname' => 'Active1']);
        $this->userModel->createOrUpdate($userId2, ['nickname' => 'Active2']);
        $this->userModel->createOrUpdate($userId3, ['nickname' => 'Inactive']);

        // Simulate inactive user (old timestamp)
        $pdo = TestDatabaseHelper::getTestPdo();
        $pdo->exec("UPDATE users SET last_seen = datetime('now', '-40 seconds') WHERE user_id = '$userId3'");

        $activeUsers = $this->userModel->getActiveUsers(30);

        $this->assertCount(2, $activeUsers);

        // Verify active users are returned
        $userIds = array_column($activeUsers, 'user_id');
        $this->assertContains($userId1, $userIds);
        $this->assertContains($userId2, $userIds);
        $this->assertNotContains($userId3, $userIds);
    }

    public function testUpdateLastSeen()
    {
        // Create user
        $this->userModel->createOrUpdate($this->testUserId, ['nickname' => 'TestUser']);

        // Get initial last_seen
        $user = $this->userModel->getByUserId($this->testUserId);
        $initialLastSeen = $user['last_seen'];

        // Wait a moment to ensure different timestamp
        sleep(1);

        // Update last seen
        $result = $this->userModel->updateLastSeen($this->testUserId);
        $this->assertNotFalse($result);

        // Verify last seen was updated
        $updatedUser = $this->userModel->getByUserId($this->testUserId);
        $this->assertNotEquals($initialLastSeen, $updatedUser['last_seen']);
    }

    public function testBanAndUnbanUser()
    {
        // Create user first
        $this->userModel->createOrUpdate($this->testUserId, ['nickname' => 'TestUser']);

        // Test initial state - not banned
        $this->assertFalse($this->userModel->isBanned($this->testUserId));

        // Ban user
        $result = $this->userModel->banUser($this->testUserId, 'admin_user', 'Test ban reason');
        $this->assertNotFalse($result);

        // Verify user is banned
        $this->assertTrue($this->userModel->isBanned($this->testUserId));

        // Get banned users list
        $bannedUsers = $this->userModel->getBannedUsers();
        $this->assertCount(1, $bannedUsers);
        $this->assertEquals($this->testUserId, $bannedUsers[0]['user_id']);
        $this->assertEquals('Test ban reason', $bannedUsers[0]['reason']);

        // Unban user
        $result = $this->userModel->unbanUser($this->testUserId);
        $this->assertNotFalse($result);

        // Verify user is no longer banned
        $this->assertFalse($this->userModel->isBanned($this->testUserId));

        // Verify banned users list is empty
        $bannedUsers = $this->userModel->getBannedUsers();
        $this->assertCount(0, $bannedUsers);
    }

    public function testUpdateNickname()
    {
        // Create user
        $this->userModel->createOrUpdate($this->testUserId, ['nickname' => 'OldName']);

        // Update nickname
        $result = $this->userModel->updateNickname($this->testUserId, 'NewName');
        $this->assertNotFalse($result);

        // Verify nickname was updated
        $user = $this->userModel->getByUserId($this->testUserId);
        $this->assertEquals('NewName', $user['nickname']);
    }

    public function testCleanupOldRecords()
    {
        // Create user
        $this->userModel->createOrUpdate($this->testUserId, ['nickname' => 'TestUser']);

        // Set last_seen to be very old
        $pdo = TestDatabaseHelper::getTestPdo();
        $pdo->exec("UPDATE users SET last_seen = datetime('now', '-40 days') WHERE user_id = '$this->testUserId'");

        // Cleanup records older than 30 days
        $result = $this->userModel->cleanupOldRecords(30);
        $this->assertGreaterThan(0, $result); // Should have deleted at least one record

        // Verify user was cleaned up
        $user = $this->userModel->getByUserId($this->testUserId);
        $this->assertFalse($user);
    }

    public function testNonExistentUser()
    {
        $user = $this->userModel->getByUserId('nonexistent_user');
        $this->assertFalse($user);

        // Test update on non-existent user
        $result = $this->userModel->updateLastSeen('nonexistent_user');
        $this->assertEquals(0, $result); // No rows affected
    }

    public function testGetActiveUsersWithinTimeframe()
    {
        // Create users with different activity times
        $userId1 = 'recent_user';
        $userId2 = 'old_user';

        $this->userModel->createOrUpdate($userId1, ['nickname' => 'Recent']);
        $this->userModel->createOrUpdate($userId2, ['nickname' => 'Old']);

        // Make one user appear old
        $pdo = TestDatabaseHelper::getTestPdo();
        $pdo->exec("UPDATE users SET last_seen = datetime('now', '-1 hour') WHERE user_id = '$userId2'");

        // Get users active within 30 minutes
        $activeUsers = $this->userModel->getActiveUsers(30); // 30 seconds for testing
        $this->assertCount(1, $activeUsers);
        $this->assertEquals($userId1, $activeUsers[0]['user_id']);
    }

    public function testDatabaseConnectionFailure()
    {
        // This test would verify error handling in a real scenario
        // For now, we test that the model handles database operations gracefully
        $this->assertIsObject($this->userModel);

        // Test that methods return false/null on failure rather than throwing exceptions
        $result = $this->userModel->getByUserId('invalid_id_format_x');
        $this->assertFalse($result);
    }
}