Basic Google file permission checking

server/app.js

@@ -318,6 +318,9 @@ app.get('/user/:username', async (req, res, next)=>{
 		// If stub matches file from Google, use Google metadata over stub metadata
 		if(googleBrews && googleBrews.length > 0) {
 			for (const brew of brews.filter((brew)=>brew.googleId)) {
+				const permissionCheck = await GoogleActions.checkPermissions(auth, brew);
+				brew.permissionCheck = permissionCheck;
+
 				const match = googleBrews.findIndex((b)=>b.editId === brew.editId);
 				if(match !== -1) {
 					brew.googleId = googleBrews[match].googleId;
@@ -330,7 +333,7 @@ app.get('/user/:username', async (req, res, next)=>{
 			}
 
 			//Remaining unstubbed google brews display current user as author
-			googleBrews = googleBrews.map((brew)=>({ ...brew, authors: [req.account.username] }));
+			googleBrews = googleBrews.map(async (brew)=>({ ...brew, authors: [req.account.username] }));
 			brews = _.concat(brews, googleBrews);
 		}
 	}

server/googleActions.js

@@ -264,6 +264,26 @@ const GoogleActions = {
 		return obj.data.id;
 	},
 
+	checkPermissions : async (auth, brew)=>{
+		if(!brew?.googleId) return;
+		const drive = googleDrive.drive({ version: 'v3', auth });
+
+		try {
+			const driveData = await drive.permissions.list({ fileId: brew.googleId });
+			const permissionsList = driveData?.data?.permissions;
+
+			if(permissionsList.some((permission)=>{
+				return permission.id == 'anyoneWithLink' && permission.role == 'writer';
+			})){
+				return 1;
+			};
+		} catch (err) {
+			return err.code;
+		}
+
+		return 999;
+	},
+
 	getGoogleBrew : async (auth = defaultAuth, id, accessId, accessType)=>{
 		const drive = googleDrive.drive({ version: 'v3', auth: auth });