Add endpoint for fetching recent Steam games

This fetches all owned games and sorts them based on recent playtime to get the most recent played games outside of the 14 day window provided by the dedicated endpoint

src/routes/api/steam/+server.ts

@@ -0,0 +1,52 @@
+import { error, json } from '@sveltejs/kit'
+import type { RequestHandler } from './$types'
+import SteamAPI, { Game, GameInfo, GameInfoExtended, UserPlaytime } from 'steamapi'
+
+export const GET: RequestHandler = async ({ params }) => {
+	const steam = new SteamAPI(process.env.STEAM_API_KEY)
+	try {
+		const steamId = '76561197997279808'
+
+		const ownedGames = await steam.getUserOwnedGames(steamId, { includeExtendedAppInfo: true })
+
+		const sortedGames = sortUserPlaytimes(ownedGames).slice(0, 5)
+		const extendedGames = sortedGames.filter(
+			(game): game is UserPlaytime<GameInfoExtended> => 'coverURL' in game.game
+		)
+		const serializableGames: SerializableGameInfo[] = extendedGames.map((game) => ({
+			id: game.game.id,
+			name: game.game.name,
+			playtime: game.minutes,
+			coverURL: game.game.coverURL
+		}))
+
+		return new Response(JSON.stringify(serializableGames), {
+			headers: { 'Content-Type': 'application/json' }
+		})
+	} catch (err) {
+		console.log('Catching here')
+		console.error('Error fetching recent game:', err)
+		throw error(500, 'Error fetching recent game data')
+	}
+}
+
+function sortUserPlaytimes(
+	userPlaytimes: UserPlaytime<GameInfoExtended | Game | GameInfo>[]
+): UserPlaytime<GameInfoExtended | Game | GameInfo>[] {
+	return userPlaytimes.sort((a, b) => {
+		if (a.lastPlayedTimestamp === undefined && b.lastPlayedTimestamp === undefined) {
+			// Both games have never been played, sort by total minutes (which will be 0)
+			return b.minutes - a.minutes // This will always be 0 - 0, but we keep it for consistency
+		}
+		if (a.lastPlayedTimestamp === undefined) return 1 // a goes after b
+		if (b.lastPlayedTimestamp === undefined) return -1 // a goes before b
+
+		// If both have lastPlayedTimestamp, compare them
+		if (a.lastPlayedTimestamp !== b.lastPlayedTimestamp) {
+			return b.lastPlayedTimestamp - a.lastPlayedTimestamp
+		}
+
+		// If lastPlayedTimestamp is the same, compare total minutes
+		return b.minutes - a.minutes
+	})
+}