# Lazada IOP SDK for Node JS

Lazada SDK for JavaScript allows you to interact with the Lazada API easily. This SDK supports features such as authentication, sending API requests, and file handling.

## Features

- **OAuth2 Authentication**: Generate an authentication URL for users to authorize your application.
- **API Requests**: Send API requests to the Lazada server with the provided parameters.
- **API Signature**: Sign requests for security and data integrity.
- **File Support**: Upload files to the Lazada API using FormData.

## Installation

To get started, install the following dependencies:

```bash
pnpm add axios form-data crypto
```

## Usage

### 1. Create an Instance of `LazadaClient`

To begin using this SDK, create an instance of `LazadaClient` and provide the required parameters.

```javascript
import LazadaClient from "./LazadaClient";

// Create an instance of LazadaClient
const client = new LazadaClient({
  apiKey: "YOUR_API_KEY",
  apiSecret: "YOUR_API_SECRET",
  region: "SG", // Example: 'SG', 'MY', 'VN', etc.
  callbackUrl: "YOUR_REDIRECT_URL",
});
```

### 2. Authentication

To get the authentication URL, use `makeAuthURL`. The user will be directed to this URL to grant access to your app.

```javascript
const authURL = client.makeAuthURL();
console.log(authURL); // Direct the user to this URL to login
```

### 3. Set Access Token

After the user grants permission and your app receives the authorization code, you can set the access token to the `LazadaClient` instance.

```javascript
client.setAccessToken("YOUR_ACCESS_TOKEN");
```

### 4. Add API Parameters

You can add API parameters that will be used in the API request.

```javascript
client.addAPIParam("key", "value");
client.addFileParam("file_key", fileBuffer);
```

### 5. Execute API Requests

To send an API request to Lazada, use the `execute` method with the API path and HTTP method.

```javascript
const response = await client.execute("/path/api", "GET", { key: "value" });
console.log(response);
```

### 6. Change Region

If you need to change the region where you want to access the Lazada API, you can do so with the `changeRegion` method.

```javascript
client.changeRegion("MY"); // Change to Malaysia
```

## Full Example

```javascript
import LazadaClient from "./LazadaClient";

const client = new LazadaClient({
  apiKey: "YOUR_API_KEY",
  apiSecret: "YOUR_API_SECRET",
  region: "SG",
  callbackUrl: "YOUR_REDIRECT_URL",
});

// 1. Get the authentication URL
const authURL = client.makeAuthURL();
console.log("Redirect the user to the following URL:", authURL);

// 2. After getting the access token, set the token
client.setAccessToken("YOUR_ACCESS_TOKEN");

// 3. Add API parameters
client.addAPIParam("someKey", "someValue");

// 4. Execute the API request
client.execute("/some/api/path", "GET").then((response) => {
  console.log("Response from the API:", response);
});
```

## Directory Structure

```
project/
│
├── src/
│   └── index.ts       # Main SDK code
├── example.ts         # Example usage of the SDK
├── package.json       # Project and dependencies information
└── tsconfig.json      # TypeScript configuration
```

## Contribution

If you want to contribute, please open a _pull request_ or create an _issue_ for any problems or suggestions.

## License

This SDK is licensed under the [MIT License](LICENSE).

---

Make sure to replace placeholders like `YOUR_API_KEY`, `YOUR_API_SECRET`, and `YOUR_REDIRECT_URL` with your actual project information.