1 files changed, 90 insertions, 0 deletions
diff --git a/src/GoogleCalendar.ts b/src/GoogleCalendar.ts
new file mode 100644
index 0000000..2376c6b
--- /dev/null
+++ b/src/GoogleCalendar.ts
@@ -0,0 +1,90 @@
+import * as fs from 'fs';
+import * as readline from 'readline';
+import {google} from "googleapis";
+
+const OAuth2Client = google.auth.OAuth2;
+const scopes = ['https://www.googleapis.com/auth/calendar'];
+
+const credentialsPath = 'client_secret.json';
+const tokenPath = 'credentials.json';
+
+export const clientPromise = new Promise((resolve, reject) => {
+    fs.readFile(credentialsPath, (err, data) => {
+        if (err) return reject(err);
+
+        const credentials = JSON.parse(data.toString());
+        const {client_secret, client_id, redirect_uris} = credentials.installed;
+
+        const client = new OAuth2Client(client_id, client_secret, redirect_uris[0]);
+
+        fs.readFile(tokenPath, (err, data) => {
+            if (err) {
+                const authUrl = client.generateAuthUrl({
+                    access_type: 'offline',
+                    scope: scopes,
+                });
+
+                console.log('Authorize this app by visiting this url:', authUrl);
+
+                const rl = readline.createInterface({
+                    input: process.stdin,
+                    output: process.stdout,
+                });
+
+                rl.question('Enter the code from that page here: ', code => {
+                    rl.close();
+                    client.getToken(code, (err, token) => {
+                        if (err) return reject(err);
+                        fs.writeFile(tokenPath, JSON.stringify(token), err => err ? console.error(err) : 0);
+                        client.setCredentials(token);
+                        resolve(client);
+                    });
+                });
+            }
+            else {
+                client.setCredentials(JSON.parse(data.toString()));
+                resolve(client);
+            }
+        });
+    });
+});
+
+export const calendarPromise = clientPromise.then(auth => google.calendar({version: 'v3', auth}));
+
+
+export async function listEvents() {
+    const calendar = await calendarPromise;
+    calendar.events.list({
+        calendarId: 'primary',
+        timeMin: (new Date()).toISOString(),
+        maxResults: 10,
+        singleEvents: true,
+        orderBy: 'startTime',
+    }, (err, data) => {
+        if (err) return console.log('The API returned an error: ' + err);
+        const events = data.data.items;
+        if (events.length) {
+            console.log('Upcoming 10 events:');
+            events.map((event, i) => {
+                const start = event.start.dateTime || event.start.date;
+                console.log(`${start} - ${event.summary}`);
+            });
+        } else {
+            console.log('No upcoming events found.');
+        }
+    });
+}
+
+export function createEvent(event, calendarId = 'primary') {
+    return calendarPromise.then(calendar => {
+        return new Promise((resolve, reject) => {
+            calendar.events.insert({
+                calendarId: calendarId,
+                resource: event,
+            }, function (err, event) {
+                if (err) return reject(err);
+                resolve(event);
+            });
+        })
+    });
+}