scrapear coto

.gitignore

@@ -5,4 +5,5 @@ p
 node_modules/
 *.db
 scraper/debug/
-scraper/x.tsv
+scraper/x.tsv
+*.tmp

scraper/coto.ts

@@ -0,0 +1,38 @@
+import { parseHTML } from "linkedom";
+import { type Precioish } from "./scrap.js";
+
+function getEanFromText({ document }: Window) {
+  const potentialEanEls = Array.from(
+    document.querySelectorAll("div#brandText")
+  );
+  const eanParent = potentialEanEls.find(
+    (el) => el.textContent?.includes("| EAN: ")
+  );
+  if (!eanParent) throw new Error("no encuentro el eanparent");
+
+  const eanEl = Array.from(
+    eanParent?.querySelectorAll("span.span_codigoplu")
+  )[1];
+  const ean = eanEl?.textContent?.trim();
+  if (!ean) throw new Error("no encuentro el ean");
+  return ean;
+}
+function getPriceFromText({ document }: Window) {
+  const el = document.querySelector(".atg_store_newPrice");
+  if (!el) throw new Error("no encuentro el precio");
+  const nStr = el
+    .textContent!.trim()
+    .replace("$", "")
+    .replaceAll(".", "")
+    .replace(",", ".");
+  return parseFloat(nStr) * 100;
+}
+
+export function getCotoProduct(html: string | Buffer): Precioish {
+  const dom = parseHTML(html);
+
+  const ean = getEanFromText(dom);
+  const precioCentavos = getPriceFromText(dom);
+
+  return { ean, precioCentavos };
+}

scraper/scrap.ts

@@ -11,6 +11,7 @@ import { createHash } from "crypto";
 import { migrate } from "drizzle-orm/bun-sqlite/migrator";
 import { getCarrefourProduct } from "./carrefour.js";
 import { getDiaProduct } from "./dia.js";
+import { getCotoProduct } from "./coto.js";
 import { join } from "path";
 
 const sqlite = new Database("sqlite.db");
@@ -19,7 +20,7 @@ const db = drizzle(sqlite);
 const DEBUG = true;
 
 export type Precio = typeof precios.$inferInsert;
-export type Precioish = Omit<Precio, "fetchedAt" | "url">;
+export type Precioish = Omit<Precio, "fetchedAt" | "url" | "id">;
 
 async function storePrecioPoint(point: Precio) {
   await db.insert(precios).values(point);
@@ -45,7 +46,9 @@ async function storePrecioPoint(point: Precio) {
           ish = getCarrefourProduct(html);
         else if (url.hostname === "diaonline.supermercadosdia.com.ar")
           ish = getDiaProduct(html);
-        else console.error(`Unknown host ${url.hostname}`);
+        else if (url.hostname === "www.cotodigital3.com.ar")
+          ish = getCotoProduct(html);
+        else throw new Error(`Unknown host ${url.hostname}`);
 
         const p: Precio = {
           ...ish,