feat: enhance product listing with additional metrics and sorting options

src/server.ts

@@ -27,6 +27,10 @@ type ProductListRecord = {
   verdict: "FBA" | "FBM" | "SKIP";
   confidence: number | null;
   sellability_status: string | null;
+  monthly_sold: number | null;
+  seller_count: number | null;
+  sales_rank: number | null;
+  current_price: number | null;
   fetched_at: string;
 };
 
@@ -274,6 +278,21 @@ function getProductList(filters: URLSearchParams) {
   }
 
   const where = conditions.length > 0 ? `WHERE ${conditions.join(" AND ")}` : "";
+  const allowedSort = new Set([
+    "asin",
+    "verdict",
+    "monthly_sold",
+    "seller_count",
+    "sales_rank",
+    "current_price",
+    "product_name",
+    "fetched_at",
+  ]);
+  const orderBy = parseResultSort(
+    filters.get("sort"),
+    allowedSort,
+    "CAST(COALESCE(monthly_sold, 0) AS INTEGER) DESC, fetched_at DESC",
+  );
 
   const baseUnion = `
     SELECT
@@ -286,6 +305,10 @@ function getProductList(filters: URLSearchParams) {
       verdict,
       confidence,
       sellability_status,
+      monthly_sold,
+      sellers AS seller_count,
+      sales_rank,
+      current_price,
       fetched_at
     FROM results
     UNION ALL
@@ -299,6 +322,10 @@ function getProductList(filters: URLSearchParams) {
       verdict,
       confidence,
       sellability_status,
+      monthly_sold,
+      seller_count,
+      sales_rank,
+      current_price,
       fetched_at
     FROM product_analysis_results
   `;
@@ -308,7 +335,7 @@ function getProductList(filters: URLSearchParams) {
     .get(...params) as { total: number };
 
   const items = db
-    .query(`SELECT * FROM (${baseUnion}) all_products ${where} ORDER BY fetched_at DESC LIMIT ? OFFSET ?`)
+    .query(`SELECT * FROM (${baseUnion}) all_products ${where} ORDER BY ${orderBy} LIMIT ? OFFSET ?`)
     .all(...params, pageSize, offset) as ProductListRecord[];
 
   return {