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index.js
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index.js
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"use strict";
const line = require("@line/bot-sdk");
const express = require("express");
const configGet = require("config"); //for azur
const config = {
//for line
channelAccessToken: configGet.get("CHANNEL_ACCESS_TOKEN"),
channelSecret: configGet.get("CHANNEL_SECRET")
};
const request = require("request");
const msSubscriptionKey = configGet.get("MS_SUBSCRIPTION_KEY");
const client = new line.Client(config);
const app = express();
app.post("/callback", line.middleware(config), (req, res) => {
Promise.all(req.body.events.map(handleEvent))
.then(result => res.json(result))
.catch(err => {
console.error(err);
res.status(500).end();
});
}); //app.post end
function handleEvent(event) {
console.log("event");
console.log(event);
if (event.type !== "message" || event.message.type !== "text") {
//return Promise.resolve(null); ==> ignore non-text-message event
console.log("event type is::" + event.type);
console.log("event.message.type is::" + event.message.type);
console.log("event detail::" + JSON.stringify(event));
MSimageRecognition(event);
} else {
const echo = { type: "text", text: "請輸入一張照片進行辨識" };
return client.replyMessage(event.replyToken, echo);
}
// //const echo = { type: "text", text: event.message.text };
// //return client.replyMessage(event.replyToken, echo);
} //function end
function MSimageRecognition(thisevent) {
console.log("[MSimageRecog is in]");
let thisResult = null;
const subscriptionKey = msSubscriptionKey;
const uriBase =
"https://westcentralus.api.cognitive.microsoft.com/vision/v2.0/analyze";
const imageID = thisevent.message.id;
console.log("imageID:" + imageID);
const params = {
overload: "stream",
visualFeatures: "Description",
details: "",
language: "zh"
};
const options = {
uri: uriBase,
qs: params,
headers: {
"Content-Type": "application/octet-stream",
"Ocp-Apim-Subscription-Key": subscriptionKey
}
}; //const option end
client.getMessageContent(imageID).then(stream => {
var data = null;
stream.on("data", chunk => {
if (data) {
data = Buffer.concat([data, chunk]);
} else {
data = chunk;
}
console.log("adding");
});
stream.on("error", err => {
console.log(err);
});
stream.on("end", () => {
console.log("IMAGE DONE!");
options.body = data;
request.post(options, (error, response, body) => {
let echo = null;
console.log("[req in]");
if (error) {
console.log("ERR:", error);
return;
}
let jsonResponse = JSON.stringify(JSON.parse(body), null, "");
console.log("JSON RESPONSE\n");
console.log(jsonResponse);
if (JSON.parse(body).description.captions.length != 0) {
thisResult = JSON.parse(body).description.captions[0].text;
console.log("thisResult" + thisResult);
echo = { type: "text", text: thisResult };
} else {
echo = { type: "text", text: "TOO DEEP TO KNOW" };
}
client.replyMessage(thisevent.replyToken, echo);
}); //req.body
}); //stream on end
}); //.then
} //function MSimageRecognition end
const port = process.env.PORT || process.env.post || process.env.Port || 1235;
app.listen(port, () => {
console.log(`listen on ${port}`);
});