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facebook-api.js
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facebook-api.js
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'use strict';
const https = require('https');
const PageAccessToken = process.env.PAGE_ACCESS_TOKEN;
module.exports.sendTyping = function (recipientId) {
return callSendAPI({
recipient: {
id: recipientId
},
sender_action: 'typing_on'
});
};
module.exports.sendText = function (recipientId, messageText, quickReplies) {
return callSendAPI({
recipient: {
id: recipientId
},
message: {
text: messageText,
quick_replies: quickReplies
}
});
};
module.exports.sendImage = function (recipientId, imageUrl) {
return callSendAPI({
recipient: {
id: recipientId
},
message: {
attachment: {
type: 'image',
payload: {
url: imageUrl,
"is_reusable":true
}
}
}
});
};
module.exports.sendAudio = function (recipientId, audioUrl) {
return callSendAPI({
recipient: {
id: recipientId
},
message: {
attachment: {
type: 'audio',
payload: {
url: audioUrl,
"is_reusable":true
}
}
}
});
};
function callSendAPI(messageData) {
return new Promise((resolve, reject) => {
let body = JSON.stringify(messageData);
let options = {
host: "graph.facebook.com",
path: `/v2.6/me/messages?access_token=${PageAccessToken}`,
method: 'POST',
headers: {'Content-Type': 'application/json'}
};
let onComplete = function (response) {
let str = '';
response.on('data', function (chunk) {
str += chunk;
});
response.on('end', () => {
console.log(`FB response ${str}`);
resolve(str);
});
};
let req = https.request(options, onComplete);
req.on('error', e => {
console.log(`Error response from FB: ${e}`);
reject(e);
});
console.log(`FB request: ${body}`);
req.write(body);
req.end();
})
}