Add betting functionality to prediction markets for users

Integrates prediction market betting with new API endpoints, database schema, and client-side UI elements.

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/6XTzcDL

server/storage.ts

@@ -7,6 +7,7 @@ import {
   bids,
   mediaOutletRequests,
   comments,
+  predictionBets,
   type User,
   type UpsertUser,
   type MediaOutlet,
@@ -23,6 +24,8 @@ import {
   type InsertMediaOutletRequest,
   type Comment,
   type InsertComment,
+  type PredictionBet,
+  type InsertPredictionBet,
 } from "@shared/schema";
 import { db } from "./db";
 import { eq, desc, and, ilike, sql } from "drizzle-orm";
@@ -61,6 +64,11 @@ export interface IStorage {
   getMediaOutletRequests(status?: string): Promise<MediaOutletRequest[]>;
   createMediaOutletRequest(request: InsertMediaOutletRequest): Promise<MediaOutletRequest>;
   updateMediaOutletRequestStatus(id: string, status: string, reviewerId: string): Promise<MediaOutletRequest>;
+
+  // Prediction bet operations
+  createPredictionBet(bet: InsertPredictionBet): Promise<PredictionBet>;
+  getPredictionBetsByMarket(marketId: string): Promise<PredictionBet[]>;
+  getPredictionBetsByUser(userId: string): Promise<PredictionBet[]>;
   
   // Comment operations
   getCommentsByArticle(articleId: string): Promise<Comment[]>;
@@ -286,6 +294,51 @@ export class DatabaseStorage implements IStorage {
     const [newComment] = await db.insert(comments).values(comment).returning();
     return newComment;
   }
+
+  // Prediction bet operations
+  async createPredictionBet(bet: InsertPredictionBet): Promise<PredictionBet> {
+    // Get the current market to determine the price
+    const market = await this.getPredictionMarketById(bet.marketId);
+    if (!market) {
+      throw new Error("Prediction market not found");
+    }
+
+    // Use current market price for the bet
+    const price = bet.side === "yes" ? market.yesPrice : market.noPrice;
+    
+    const [newBet] = await db.insert(predictionBets).values({
+      ...bet,
+      price: price.toString()
+    }).returning();
+
+    // Update market volume and bet count
+    await db
+      .update(predictionMarkets)
+      .set({
+        totalVolume: sql`total_volume + ${bet.amount}`,
+        totalBets: sql`total_bets + 1`,
+        updatedAt: new Date()
+      })
+      .where(eq(predictionMarkets.id, bet.marketId));
+
+    return newBet;
+  }
+
+  async getPredictionBetsByMarket(marketId: string): Promise<PredictionBet[]> {
+    return await db
+      .select()
+      .from(predictionBets)
+      .where(eq(predictionBets.marketId, marketId))
+      .orderBy(desc(predictionBets.createdAt));
+  }
+
+  async getPredictionBetsByUser(userId: string): Promise<PredictionBet[]> {
+    return await db
+      .select()
+      .from(predictionBets)
+      .where(eq(predictionBets.userId, userId))
+      .orderBy(desc(predictionBets.createdAt));
+  }
   
   // Analytics operations
   async getAnalytics(): Promise<{