開發 Line Clova無法像 Google Home一樣，直接在 console上作一作，也可以完成一支程式。

一定得要開 cloud function 來實踐才行，建議採用Line的 Clova CEK SDK Nodejs 來做，不過本篇還是先偷懶，直接倒json回去。後面章節再來聊clova cek sdk 可以幫我們做什麼?

如何使用LINE Clova 後台，建置 LINE Clova
#11 介紹
#12 Line Clova Developer Centerβ 環境設定
#13 建立
#14 訓練model
#15 使用 ExtensionサーバーのURL (webhook)串API
#16 送審

如同 #5 我將直接使用 serverless framework 來開 GCP 的cloud function.

不熟 serverless framework 的朋友，請先 follow 這個教學
https://serverless.com/framework/docs/providers/google/guide/quick-start/

hello world 開好正常運作後，直接將下面的code copy到你的index.js上。

exports.parking_clova = (request, response) => {
    let getRes = text => {
        return {
            response: {
                outputSpeech: {
                    type: "SimpleSpeech",
                    values: {
                        type: "PlainText",
                        lang: "ja",
                        value: text
                    }
                },
                card: {},
                directives: [],
                shouldEndSession: false
            }
        }
    };
    console.log("request.body", request.body);


    const intent = request.body.request.intent.name;

    if (request.body.request.intent.slots.Road === undefined) {
        response.setHeader("Content-Type", "application/json; charset=utf-8");
        response.status(200).send(JSON.stringify(getRes("この道を手に入れないでください！")));
        return
    }

    if (request.body.request.intent.slots === null) {
        response.setHeader("Content-Type", "application/json; charset=utf-8");
        response.status(200).send(JSON.stringify(getRes("道路名が必要")));
        return
    }
    const RoadName = request.body.request.intent.slots.Road.value;


    var s = "";
    callRoadApi(RoadName).then(obj => {
        if (obj.length > 0) {
            obj.map(i => {
                if (intent === "CanParking") {
                    s += `${i.rd_name} には${i.rd_count}台の駐車スペース `;
                } else if (intent === "ParkingPayment") {
                    translate
                        .translate(i.tp_name, "ja")
                        .then(results => {
                            const translation = results[0];
                            console.log(`Translation: ${translation}`);
                            response.setHeader("Content-Type", "application/json; charset=utf-8");
                            response.status(200).send(JSON.stringify(getRes(translation)));
                            return;
                        })
                        .catch(err => {
                            console.error('ERROR:', err);
                        });
                }
            })


            response.setHeader("Content-Type", "application/json; charset=utf-8");
            response.status(200).send(JSON.stringify(getRes(s)));
        }
    })
};


var callRoadApi = (roadName) => {
    return new Promise((resolve, reject) => {
        console.log("roadName", roadName)
        // let path = "http://data.tycg.gov.tw/api/v1/rest/datastore/27d2edc9-890e-4a42-bcae-6ba78dd3c331?format=json";
        http.get({ host: "data.tycg.gov.tw", path: "/api/v1/rest/datastore/27d2edc9-890e-4a42-bcae-6ba78dd3c331?format=json&" }, (res) => {
            // http.get(path, res => {
            let body = ''; // var to store the response chunks
            res.on('data', (d) => { body += d; }); // store each response chunk
            res.on('end', () => {
                let response = JSON.parse(body);
                let records = response.result.records;
                let r = records.filter((n) => {
                    if (n.rd_name.indexOf(roadName) > -1) {
                        return n
                    }
                })
                if (r.length > 0) {
                    resolve(r)
                } else {
                    console.log("fail it")
                    reject()
                }
            });
            res.on('error', (error) => {
                console.log(`Error calling the weather API: ${error}`)
                reject();
            });
        })
    })
}

serverless.yaml 加這個

third:
handler: parking_clova
events:
- http: path

再 sls deploy 上去吧

測試吧

搞定。下一章來送審！