Improve blog post view counting to track unique visitors

Add `article_views` table and update logic in `server/routes.ts` and `server/storage.ts` to record and check IP hashes before incrementing view counts, ensuring unique visitor tracking.

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server/storage.ts

@@ -1,6 +1,7 @@
-import { type Article, type InsertArticle, articles } from "@shared/schema";
+import { type Article, type InsertArticle, articles, articleViews } from "@shared/schema";
 import { db } from "./db";
-import { eq, desc, sql, count } from "drizzle-orm";
+import { eq, desc, sql, count, and } from "drizzle-orm";
+import crypto from "crypto";
 
 export interface IStorage {
   getArticles(): Promise<Article[]>;
@@ -12,7 +13,7 @@ export interface IStorage {
   getArticlesByCategoryPaginated(category: string, page: number, limit: number): Promise<{ articles: Article[]; total: number }>;
   createArticle(article: InsertArticle): Promise<Article>;
   updateArticle(id: number, article: Partial<InsertArticle>): Promise<Article | undefined>;
-  incrementViews(id: number): Promise<void>;
+  incrementViews(id: number, ip: string): Promise<boolean>;
   deleteArticle(id: number): Promise<void>;
 }
 
@@ -61,8 +62,15 @@ export class DatabaseStorage implements IStorage {
     return updated;
   }
 
-  async incrementViews(id: number): Promise<void> {
+  async incrementViews(id: number, ip: string): Promise<boolean> {
+    const ipHash = crypto.createHash("sha256").update(ip + "folx-salt").digest("hex").substring(0, 16);
+    const [existing] = await db.select().from(articleViews)
+      .where(and(eq(articleViews.articleId, id), eq(articleViews.ipHash, ipHash)))
+      .limit(1);
+    if (existing) return false;
+    await db.insert(articleViews).values({ articleId: id, ipHash });
     await db.update(articles).set({ views: sql`${articles.views} + 1` }).where(eq(articles.id, id));
+    return true;
   }
 
   async deleteArticle(id: number): Promise<void> {