Add functionality to upload and display articles with associated images

Update article page to handle image uploads and display articles from text files. Refactor currency and date formatting, and add a method to fetch prediction markets by ID.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 0fb68265-c270-4198-9584-3d9be9bddb41
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/0fb68265-c270-4198-9584-3d9be9bddb41/rOJiPGe

server/routes.ts

@@ -259,7 +259,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
       res.status(201).json(bet);
     } catch (error) {
       console.error("Error placing prediction bet:", error);
-      if (error.message === "Prediction market not found") {
+      if (error instanceof Error && error.message === "Prediction market not found") {
         return res.status(404).json({ message: "Prediction market not found" });
       }
       res.status(500).json({ message: "Failed to place bet" });

server/storage.ts

@@ -51,6 +51,7 @@ export interface IStorage {
   
   // Prediction market operations
   getPredictionMarkets(articleId?: string): Promise<PredictionMarket[]>;
+  getPredictionMarketById(id: string): Promise<PredictionMarket | undefined>;
   createPredictionMarket(market: InsertPredictionMarket): Promise<PredictionMarket>;
   
   // Auction operations
@@ -188,6 +189,11 @@ export class DatabaseStorage implements IStorage {
     return await db.select().from(predictionMarkets).where(eq(predictionMarkets.isActive, true)).orderBy(desc(predictionMarkets.createdAt));
   }
 
+  async getPredictionMarketById(id: string): Promise<PredictionMarket | undefined> {
+    const [market] = await db.select().from(predictionMarkets).where(eq(predictionMarkets.id, id));
+    return market;
+  }
+
   async createPredictionMarket(market: InsertPredictionMarket): Promise<PredictionMarket> {
     const [newMarket] = await db.insert(predictionMarkets).values(market).returning();
     return newMarket;
@@ -323,7 +329,7 @@ export class DatabaseStorage implements IStorage {
     
     const [newBet] = await db.insert(predictionBets).values({
       ...bet,
-      price: price.toString()
+      price: price?.toString() || "0.5"
     }).returning();
 
     // Update market volume and bet count