# Legacy SDK (deprecated)
PushPushGo SDK is a software development kit that allows you to integrate web push without our integration script, but with customization possibilities.
### Setup
1. Place PushPushGo service worker with your project Id in sw\.js file on the website server.
{% code title="sw\.js" %}
```javascript
importScripts('https://cdn.pushpushgo.com/$projectId/worker.js');
```
{% endcode %}
2. Copy SDK script and place it in the website source code. Integration script has to be placed in the section of website's DOM structure.
{% code title="index.html" %}
```javascript
```
{% endcode %}
3. Initialize SDK client.
```javascript
const config = {
projectId: $projectId,
vapidPublicKey: $vapidPublicKey,
isHTTPS: $isHTTPS,
endpoint: 'https://api.pushpushgo.com',
swPath?: $serviceWorkerPath,
websitePushId?: $websitePushId,
};
const client = new ppg.sdk.Client(config);
```
| parameter | type | description |
| ---------------- | --------- | --------------------------------------------------------------------- |
| `projectId` | `string` | required |
| `vapidPublicKey` | `string` | required |
| `isHTTPS` | `boolean` | required, whetver your website address has `http` or `https` protocol |
| `endpoint` | `string` | required, value: `https://api.pushpushgo.com` |
| `websitePushId` | `string` | optional, for Safari < 16 integration |
| `swPath` | `string` | optional, path to `sw.js` file when other than root |
### Push notifications
#### `isPushSupport(): Promise`
Check if the browser supports web push notifications.
#### `checkPermission(): Promise`
Check for native permission.
### Subscription
#### `register(options?: ISubscribeOptions): Promise`
Register new subscriber - show popup dialog or native permission window
`returns` subscriberId
| parameter | type | description |
| --------- | ---------------------- | ----------- |
| `fields` | `{ customId?: string}` | optional |
| `tags` | `string[]` | optional |
#### `isSubscribed(): Promise`
Check if subscriber is registered
#### `getId(): Promise`
`returns` subscriberId
#### `unsubscribe(): Promise`
Unsubscribe existing subscriber at database
### Custom Id
#### `setCustomId(customId: string | number): Promise`
Sets customId in cloned store
#### `getCustomId(): Promise`
`returns` subscriber's customId
### Labels
#### `appendTags(tags: string[]): Promise`
Append tags to store. For tag with labels support use `labelName:tagName` syntax.
| parameter | type | description |
| --------- | ---------- | ----------- |
| `tags` | `string[]` | |
#### `getTags(): Promise`
`returns` current subscriber's tags
#### `removeTags(tags: string[]): Promise`
Remove tag(s) by label from store For labels support please use `'labelName:tagName'` syntax
#### `getTagsToRemove(): Promise`
`returns` subscriber's tags to remove
### Session data
#### `setSelector(selectorName: string, value: string | number | null | boolean): Promise`
Set selector value - field must be declared in application first
#### `clearState(): void`
Clear state, reset values
### Beacons
#### `send(immediately?: boolean): Promise`
Set beacon to send on event before unload