# `@lefe-dev/lefe-verify-license`

A library to verify license keys, display watermarks for trial versions, and manage license information for the Lefe platform.

## Installation

Install via npm:

```bash
npm install @lefe-dev/lefe-verify-license
```

## Usage

### License Verification

```javascript
import { LicenseVerifier } from "@lefe-dev/lefe-verify-license";

const licenseVerifier = new LicenseVerifier({
  scopes: [{ name: "your-package-name" }],
  organization: "your-organization-name",
});

const result = licenseVerifier.verifyLicense({
  licenseKey: "customer-license-key",
  packageScope: "your-package-name",
});

console.log(result.status);
```

### Watermark Display

```javascript
import { showWatermark } from "@lefe-dev/lefe-verify-license";

showWatermark(result.status, "block", {
  parent: document.body,
  width: 100,
  height: 100,
});
```

### License Management

```javascript
import { LicenseInfo } from "@lefe-dev/lefe-verify-license";

const licenseInfo = new LicenseInfo({
  organization: "your-organization-name",
});

licenseInfo.setLicenseKey("customer-license-key");
const key = licenseInfo.getLicenseKey();
```

## API

### `LicenseVerifier`

- **constructor({ scopes, organization })**

  - **scopes**: `ScopesTree` - A tree structure defining the scopes of licenses.
  - **organization**: `Organization` - The name of the organization managing the license.

  **Example:**

  ```javascript
  const licenseVerifier = new LicenseVerifier({
    scopes: [
      { name: "pro", children: [{ name: "package-one" }] },
      {
        name: "premium",
        children: [{ name: "package-two" }, { name: "package-three" }],
      },
    ],
    organization: "your-org-name",
  });
  ```

- **verifyLicense({ licenseKey, packageScope })**

  - **licenseKey**: `string` - The license key to be verified.
  - **packageScope**: `ScopeName` - The scope of the package being verified.

  **Returns**: `{ status: LicenseStatus; meta?: object }`

  - **status**: `LicenseStatus` - The result of the license verification `NotFound`, `Invalid`, `ExpiredSubscription`, `ExpiredSubscriptionGrace`, `Valid`, `OutOfScope`
  - **meta**: `object` (optional) - Additional metadata about the license verification result.

  **Example:**

  ```javascript
  licenseVerifier.verifyLicense({
    licenseKey: "customer-license-key",
    packageScope: "pro",
  });
  ```

### `showWatermark`

- **showWatermark(status, type, options)**

  - **status**: `LicenseStatus` - The license status to check.
  - **type**: `string` - Type of watermark.
    - Possible values: `'image'`, `'block'`
  - **options**: `WatermarkOptions | ImageWatermarkOptions` - Options for watermark customization.
    - **parent**: `HTMLElement` - The parent element to attach the watermark.
    - **width**: `number` - The width of the watermark.
    - **height**: `number` - The height of the watermark.
    - **backgroundRepeat**: `string` (optional) - Controls the repetition of the watermark background.
    - **rotate**: `number` (optional) - Rotation angle of the watermark.

  Check [watermark-js-plus](https://www.npmjs.com/package/watermark-js-plus) package for more info.

### `LicenseInfo`

- **constructor({ organization })**

  - **organization**: `Organization` - The name of the organization for which the license is managed.

  **Example:**

  ```javascript
  const licenseInfo = new LicenseInfo({
    organization: "your-organization-name",
  });
  ```

- **getLicenseKey()**

  - **Returns**: `License["key"]` - The current license key.

  **Example:**

  ```javascript
  const key = licenseInfo.getLicenseKey();
  console.log(key); // Outputs the current license key
  ```

- **setLicenseKey(key)**

  - **key**: `string` (optional) - The new license key to set.

  **Example:**

  ```javascript
  licenseInfo.setLicenseKey("new-license-key");
  ```

## License

Licensed under MIT.