Fix missing check for userID for new sessions

New sessions what didn't contain a session cookie were erroring because
userID was not set, now a default user object is created. isUserAdmin
will also now catch any errors when getting the user object.

controllers/game.js

@@ -19,7 +19,12 @@ game.get('/game:id', async ctx => {
 		const reviews = (await ctx.db.getReviewsForGame(Number(gamedata.gameID))).reverse()
 		const reviewCount = reviews.length
 		const platforms = gamedata.platforms
-		const user = await ctx.db.getUser(ctx.session.userID)
+
+		let user = { isAdmin: 'no' }
+		if (ctx.session.userID >= 0) {
+			user = await ctx.db.getUser(ctx.session.userID)
+		}
+
 		const hasReviews = reviewCount>0
 		let avgScore = 0
 		if (reviewCount > 0) {

db.js

@@ -383,8 +383,14 @@ class SqliteDbContext extends DbContext {
 	}
 	//checks if the user is an admin
 	async isUserAdmin(id) {
-		const user = await this.getUser(id)
-		if(user['isAdmin'] === 'yes') {
+		let user
+		try {
+			user = await this.getUser(id)
+		} catch (e) {
+			user = null
+		}
+
+		if(user && user['isAdmin'] === 'yes') {
 			return true
 		} else {
 			return false