flutter_network_engine

A network request framework based on Dio for Flutter applications.

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Installation

Add the dependency to your pubspec.yaml:

dependencies:
    flutter_network_engine: ^0.1.2

Basic Configuration

Initialize Network Engine

var dioHttpEngine = DioHttpEngine(
    // Network request timeout
    timeout: const Duration(seconds: 8),
    // Base URL for all requests
    baseUrl: "your base url", 
    // JSON parsing function
    jsonParser: ModelFactory.generateOBJ,
    // Enable logging
    printLog: true,
    // Error handling callback
    onShowError: ({int? code, String? msg, dynamic error}) {},
    // Loading state callback
    onShowLoading: (bool isShow, {String? msg}) {}
);

Customize Response Handling

You can customize how responses are processed:

// Custom status code handling
ResponseResult.onGetCode = (ResponseResult result, Type dataType) {
    return result.response?.statusCode;
};

// Custom message handling
ResponseResult.onGetMessage = (ResponseResult result, Type dataType) {
    return result.response?.statusMessage;
};

// Custom success criteria
ResponseResult.onIsSuccess = (ResponseResult result, Type dataType) {
    return result.response?.statusCode != null &&
           result.response!.statusCode! >= 200 &&
           result.response!.statusCode! < 300;
};

Add Interceptors

// Example of adding a logger interceptor
dioHttpEngine.addInterceptor(TalkerDioLogger(
    settings: const TalkerDioLoggerSettings(
        printRequestHeaders: true,
        printResponseHeaders: true,
        printResponseMessage: true,
    ),
));

Usage Examples

Making Network Requests

// GET request example
String url = "https://api.example.com/data";
var param = {"key": "value"};
var resp = await dioHttpEngine.requestFuture<YourModel>(
    RequestMethod.get, 
    url,
    options: Options(
        headers: {
            "Content-Type": "application/json",
            "Accept": "application/json",
        },
    ),
    queryParameters: param
);

// Get response data
var data = resp.getData();

Error Handling

The framework provides built-in error handling capabilities through the onShowError callback. You can customize how errors are presented to users:

DioHttpEngine(
    // ... other configurations
    onShowError: ({int? code, String? msg, dynamic error}) {
        // Handle error based on code or message
        if (code == 404) {
            // Handle not found error
        } else if (code == 401) {
            // Handle unauthorized error
        }
        // Show error message to user
    }
);

Loading States

Handle loading states during network requests:

DioHttpEngine(
    // ... other configurations
    onShowLoading: (bool isShow, {String? msg}) {
        if (isShow) {
            // Show loading indicator
            // You can use the optional message parameter
        } else {
            // Hide loading indicator
        }
    }
);

Features

• Easy to integrate and use
• Customizable response handling
• Built-in error handling
• Loading state management
• Support for interceptors
• Type-safe response parsing
• Configurable timeout and base URL
• Comprehensive logging options

Advanced Usage

For more advanced usage examples and complete implementation details, please refer to the example in the repository.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.