Add routes for media outlets, articles, and prediction markets

Adds API endpoints for fetching articles by media outlet slug, prediction markets by article slug, and auction data for media outlets. Includes functionality to place bids on media outlet auctions.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 069d4324-6c40-4355-955e-c714a50de1ea
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/069d4324-6c40-4355-955e-c714a50de1ea/jvFIdY3

server/storage.ts

@@ -205,6 +205,30 @@ export class DatabaseStorage implements IStorage {
   }
 
   async placeBid(bid: InsertBid): Promise<Bid> {
+    // First, get the auction to validate
+    const auction = await this.getAuctionById(bid.auctionId);
+    if (!auction) {
+      throw new Error("Auction not found");
+    }
+    
+    // Validate auction status
+    if (!auction.isActive) {
+      throw new Error("Auction is not active");
+    }
+    
+    // Validate auction end date
+    if (new Date() > auction.endDate) {
+      throw new Error("Auction has ended");
+    }
+    
+    // Validate bid amount
+    const currentBidAmount = parseFloat(auction.currentBid || "0");
+    const bidAmount = parseFloat(bid.amount.toString());
+    
+    if (bidAmount <= currentBidAmount) {
+      throw new Error(`Bid amount must be higher than current bid of ${currentBidAmount}`);
+    }
+    
     const [newBid] = await db.insert(bids).values(bid).returning();
     
     // Update auction with highest bid