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Fire.js
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import firebase from 'firebase'; // 4.8.1
class Fire {
constructor(group) {
this.state={group:group}
}
get uid() {
return firebase.auth().currentUser.uid;
}
get ref() {
return firebase.database().ref('messages/'+this.state.group);
}
parse = snapshot => {
const { timestamp, text, user,image,quickReplies } = snapshot.val();
const { key: _id } = snapshot;
const message = {
_id,
createdAt:timestamp,
text,
user,
image,
quickReplies
};
return message;
};
on = callback =>
this.ref
.limitToLast(20)
.on('child_added', snapshot => callback(this.parse(snapshot)));
get timestamp() {
return firebase.database.ServerValue.TIMESTAMP;
}
// send the message to the Backend
send = messages => {
for (let i = 0; i < messages.length; i++) {
const { text, user } = messages[i];
const message = {
text,
user,
timestamp: this.timestamp,
};
this.append(message);
}
};
append = message => this.ref.push(message);
// close the connection to the Backend
}
export default Fire;