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function urlB64ToUint8Array(base64String) {
const padding = '='.repeat((4 - base64String.length % 4) % 4);
const base64 = (base64String + padding).replace(/-/g, '+').replace(/_/g, '/');
const rawData = window.atob(base64);
const outputArray = new Uint8Array(rawData.length);
for (let i = 0; i < rawData.length; ++i) {
outputArray[i] = rawData.charCodeAt(i);
}
return outputArray;
}
class WebPushManager {
manager: any;
subscriptionAttempt: boolean;
constructor() {
this.manager = null;
this.subscriptionAttempt = false;
}
set = manager => {
this.manager = manager;
if (this.subscriptionAttempt) {
this.subscribe();
} else if (this.unsubscriptionAttempt) {
this.unsubscribe();
}
};
subscribe = () => {
if (!this.manager) {
this.subscriptionAttempt = true;
return Promise.reject('Please try again.');
}
return this.manager.subscribe({
userVisibleOnly: true,
applicationServerKey: urlB64ToUint8Array(
'BPJAFt0MO2BkTYSuzNdGHbVD6lbk2bzYqMBp1gBXLKUupEIIV7yXViZ1D7SyrJfFbYkKuoxwyaP8YcHU8nRDQsA'
),
});
};
unsubscribe = () => {
if (!this.manager) {
this.unsubscriptionAttempt = true;
return Promise.resolve(true);
}
return this.getSubscription().then(subscription =>
subscription.unsubscribe()
);
};
getPermissionState = () => {
// No compat
if (!('serviceWorker' in navigator) || !('PushManager' in window)) {
return new Promise(res => {
res(false);
});
}
// Old API
if (navigator.permissions) {
return navigator.permissions
.query({ name: 'notifications' })
.then(result => result.state);
}
// New API
return new Promise(res => {
res(Notification.permission);
});
};
_getSubscription = () => {
return this.manager.getSubscription();
};
getSubscription = () =>
new Promise(res => {
// Recursively call this method until we got a manager
if (!this.manager) {
setTimeout(() => {
res(this.getSubscription());
}, 500);
} else {
res(this._getSubscription());
}
});
}
export default new WebPushManager();
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