import 'package:flutter_test/flutter_test.dart';
import 'package:server_box/data/model/server/server_private_info.dart';

void main() {
  group('Server Edit Page Logic Tests', () {
    test('SSH import should only be available on desktop platforms', () {
      final desktopPlatforms = ['linux', 'macos', 'windows'];
      final mobilePlatforms = ['android', 'ios', 'fuchsia'];
      
      for (final platform in desktopPlatforms) {
        final isDesktop = desktopPlatforms.contains(platform);
        expect(isDesktop, isTrue, reason: '$platform should support SSH import');
      }
      
      for (final platform in mobilePlatforms) {
        final isDesktop = desktopPlatforms.contains(platform);
        expect(isDesktop, isFalse, reason: '$platform should not support SSH import');
      }
    });

    test('permission prompt conditions are correct', () {
      // Test the conditions for showing permission prompt
      
      // Should prompt when: firstTimeReadSSHCfg=true, sshConfigExists=true, isNewServer=true
      bool shouldPrompt(bool firstTime, bool configExists, bool isNew) {
        return firstTime && configExists && isNew;
      }
      
      expect(shouldPrompt(true, true, true), isTrue);     // All conditions met
      expect(shouldPrompt(false, true, true), isFalse);  // Setting disabled
      expect(shouldPrompt(true, false, true), isFalse);  // No config file
      expect(shouldPrompt(true, true, false), isFalse);  // Editing existing server
      expect(shouldPrompt(false, false, false), isFalse); // No conditions met
    });

    test('server validation logic works correctly', () {
      // Test server validation without actual form widgets
      
      // Valid server
      const validServer = Spi(
        name: 'test-server',
        ip: '192.168.1.100',
        port: 22,
        user: 'root',
      );
      
      expect(validServer.name.isNotEmpty, isTrue);
      expect(validServer.ip.isNotEmpty, isTrue);
      expect(validServer.port > 0 && validServer.port <= 65535, isTrue);
      expect(validServer.user.isNotEmpty, isTrue);
      
      // Invalid cases
      expect(''.isNotEmpty, isFalse); // Empty name
      expect(0 > 0, isFalse); // Invalid port
      expect(65536 <= 65535, isFalse); // Port too high
    });

    test('server form data processing is correct', () {
      // Test data processing logic
      
      final Map<String, dynamic> formData = {
        'name': 'my-server',
        'ip': '192.168.1.100',
        'port': '2222',
        'user': 'admin',
      };
      
      // Process form data into server object
      final server = Spi(
        name: formData['name'] as String,
        ip: formData['ip'] as String,
        port: int.parse(formData['port'] as String),
        user: formData['user'] as String,
      );
      
      expect(server.name, 'my-server');
      expect(server.ip, '192.168.1.100');
      expect(server.port, 2222);
      expect(server.user, 'admin');
    });

    test('SSH key handling is correct', () {
      // Test SSH key field handling
      
      const serverWithKey = Spi(
        name: 'key-server',
        ip: '192.168.1.100',
        port: 22,
        user: 'root',
        keyId: '~/.ssh/id_rsa',
      );
      
      expect(serverWithKey.keyId, '~/.ssh/id_rsa');
      expect(serverWithKey.keyId?.isNotEmpty, isTrue);
      
      const serverWithoutKey = Spi(
        name: 'pwd-server',
        ip: '192.168.1.100',
        port: 22,
        user: 'root',
        pwd: 'password123',
      );
      
      expect(serverWithoutKey.keyId, isNull);
      expect(serverWithoutKey.pwd, 'password123');
    });

    test('server editing vs creation logic', () {
      // Test logic for distinguishing between editing and creating servers
      
      const existingServer = Spi(
        name: 'existing',
        ip: '192.168.1.100',
        port: 22,
        user: 'root',
        id: 'server123',
      );
      
      // Existing server has non-empty ID
      final isEditing = existingServer.id.isNotEmpty;
      final isCreating = !isEditing;
      
      expect(isEditing, isTrue);
      expect(isCreating, isFalse);
      
      const newServer = Spi(
        name: 'new-server',
        ip: '192.168.1.100',
        port: 22,
        user: 'root',
        id: '',
      );
      
      final isCreatingNew = newServer.id.isEmpty;
      final isEditingExisting = !isCreatingNew;
      
      expect(isCreatingNew, isTrue);
      expect(isEditingExisting, isFalse);
    });

    test('form field population from imported server', () {
      // Test that imported server data correctly populates form fields
      
      const importedServer = Spi(
        name: 'imported-prod-web',
        ip: '10.0.1.100',
        port: 2222,
        user: 'deploy',
        keyId: '~/.ssh/production.pem',
      );
      
      // Simulate form field population
      final formFields = {
        'name': importedServer.name,
        'ip': importedServer.ip,
        'port': importedServer.port.toString(),
        'user': importedServer.user,
        'keyId': importedServer.keyId,
      };
      
      expect(formFields['name'], 'imported-prod-web');
      expect(formFields['ip'], '10.0.1.100');
      expect(formFields['port'], '2222');
      expect(formFields['user'], 'deploy');
      expect(formFields['keyId'], '~/.ssh/production.pem');
    });

    test('import summary display logic', () {
      // Test import summary formatting
      
      const totalFound = 5;
      const duplicatesRemoved = 2;
      const serversToImport = 3;
      
      final summary = {
        'total': totalFound,
        'duplicates': duplicatesRemoved,
        'toImport': serversToImport,
      };
      
      expect(summary['total'], 5);
      expect(summary['duplicates'], 2);
      expect(summary['toImport'], 3);
      
      // Summary validation
      expect(summary['duplicates']! + summary['toImport']!, summary['total']);
      
      // Format summary message (simplified)
      final message = 'Found ${summary['total']} servers, '
                     '${summary['duplicates']} duplicates removed, '
                     '${summary['toImport']} will be imported.';
      
      expect(message, 'Found 5 servers, 2 duplicates removed, 3 will be imported.');
    });

    test('error handling logic', () {
      // Test error handling scenarios
      
      final errors = <String>[];
      
      // Validation errors
      void validateServer(Spi server) {
        if (server.name.isEmpty) {
          errors.add('Server name is required');
        }
        if (server.ip.isEmpty) {
          errors.add('Server IP is required');
        }
        if (server.port <= 0 || server.port > 65535) {
          errors.add('Port must be between 1 and 65535');
        }
        if (server.user.isEmpty) {
          errors.add('Username is required');
        }
      }
      
      // Test with invalid server
      const invalidServer = Spi(
        name: '',
        ip: '',
        port: 0,
        user: '',
      );
      
      validateServer(invalidServer);
      
      expect(errors.length, 4);
      expect(errors.contains('Server name is required'), isTrue);
      expect(errors.contains('Server IP is required'), isTrue);
      expect(errors.contains('Port must be between 1 and 65535'), isTrue);
      expect(errors.contains('Username is required'), isTrue);
      
      // Test with valid server
      errors.clear();
      const validServer = Spi(
        name: 'valid',
        ip: '192.168.1.1',
        port: 22,
        user: 'root',
      );
      
      validateServer(validServer);
      expect(errors.isEmpty, isTrue);
    });

    test('name conflict resolution logic', () {
      // Test name conflict resolution during import
      
      final existingNames = ['server1', 'server2', 'server3'];
      
      String resolveNameConflict(String proposedName, List<String> existing) {
        if (!existing.contains(proposedName)) {
          return proposedName;
        }
        
        int suffix = 2;
        String newName;
        do {
          newName = '$proposedName ($suffix)';
          suffix++;
        } while (existing.contains(newName));
        
        return newName;
      }
      
      // Test with no conflict
      expect(resolveNameConflict('unique-name', existingNames), 'unique-name');
      
      // Test with conflict
      expect(resolveNameConflict('server1', existingNames), 'server1 (2)');
      
      // Test with multiple conflicts
      final extendedNames = [...existingNames, 'server1 (2)'];
      expect(resolveNameConflict('server1', extendedNames), 'server1 (3)');
    });

    test('SSH config import button visibility logic', () {
      // Test when SSH import button should be visible
      
      bool shouldShowSSHImport({
        required bool isDesktop,
        required bool firstTimeReadSSHCfg,
        required bool isNewServer,
      }) {
        return isDesktop && (firstTimeReadSSHCfg || !isNewServer);
      }
      
      // Desktop, first time, new server - should show
      expect(shouldShowSSHImport(
        isDesktop: true,
        firstTimeReadSSHCfg: true,
        isNewServer: true,
      ), isTrue);
      
      // Desktop, not first time, new server - should not show auto import but manual import available
      expect(shouldShowSSHImport(
        isDesktop: true,
        firstTimeReadSSHCfg: false,
        isNewServer: true,
      ), isFalse);
      
      // Desktop, editing existing server - should show manual import
      expect(shouldShowSSHImport(
        isDesktop: true,
        firstTimeReadSSHCfg: false,
        isNewServer: false,
      ), isTrue);
      
      // Mobile - should never show
      expect(shouldShowSSHImport(
        isDesktop: false,
        firstTimeReadSSHCfg: true,
        isNewServer: true,
      ), isFalse);
    });
  });
}