jumbo

scraper-rs/src/main.rs

@@ -78,8 +78,12 @@ async fn fetch_list_cli(links_list_path: String) -> anyhow::Result<()> {
     Ok(())
 }
 
+fn build_client() -> reqwest::Client {
+    reqwest::ClientBuilder::default().build().unwrap()
+}
+
 async fn worker(rx: Receiver<String>, tx: Sender<PrecioPoint>) {
-    let client = reqwest::ClientBuilder::default().build().unwrap();
+    let client = build_client();
     while let Ok(url) = rx.recv().await {
         let res = fetch_and_parse(&client, url.clone()).await;
         match res {
@@ -126,10 +130,7 @@ async fn fetch_and_parse(
     }
     let body = response.text().await.map_err(FetchError::Http)?;
 
-    let maybe_point = {
-        let dom = tl::parse(&body, tl::ParserOptions::default()).map_err(FetchError::Tl)?;
-        parse_url(url, &dom)
-    };
+    let maybe_point = { scrap_url(client, url, &body).await };
 
     let point = match maybe_point {
         Ok(p) => Ok(p),
@@ -148,30 +149,44 @@ async fn fetch_and_parse(
 
 async fn parse_file_cli(file_path: String) -> anyhow::Result<()> {
     let file = tokio::fs::read_to_string(file_path).await?;
-    let dom = tl::parse(&file, tl::ParserOptions::default())?;
 
-    let url = dom
-        .query_selector("link[rel=\"canonical\"]")
-        .unwrap()
-        .filter_map(|h| h.get(dom.parser()))
-        .filter_map(|n| n.as_tag())
-        .next()
-        .and_then(|t| t.attributes().get("href").flatten())
-        .expect("No meta canonical")
-        .as_utf8_str()
-        .to_string();
+    let client = build_client();
+
+    let url = {
+        let dom = tl::parse(&file, tl::ParserOptions::default())?;
+        dom.query_selector("link[rel=\"canonical\"]")
+            .unwrap()
+            .filter_map(|h| h.get(dom.parser()))
+            .filter_map(|n| n.as_tag())
+            .next()
+            .and_then(|t| t.attributes().get("href").flatten())
+            .expect("No meta canonical")
+            .as_utf8_str()
+            .to_string()
+    };
 
     println!("URL: {}", &url);
-    println!("{:?}", parse_url(url, &dom));
+    println!("{:?}", scrap_url(&client, url, &file).await);
     Ok(())
 }
 
-fn parse_url(url: String, dom: &VDom) -> anyhow::Result<PrecioPoint> {
+async fn scrap_url(
+    client: &reqwest::Client,
+    url: String,
+    body: &str,
+) -> anyhow::Result<PrecioPoint> {
     let url_p = Url::parse(&url).unwrap();
     match url_p.host_str().unwrap() {
-        "www.carrefour.com.ar" => sites::carrefour::parse(url, dom),
-        "diaonline.supermercadosdia.com.ar" => sites::dia::parse(url, dom),
-        "www.cotodigital3.com.ar" => sites::coto::parse(url, dom),
+        "www.carrefour.com.ar" => {
+            sites::carrefour::parse(url, &tl::parse(&body, tl::ParserOptions::default())?)
+        }
+        "diaonline.supermercadosdia.com.ar" => {
+            sites::dia::parse(url, &tl::parse(&body, tl::ParserOptions::default())?)
+        }
+        "www.cotodigital3.com.ar" => {
+            sites::coto::parse(url, &tl::parse(&body, tl::ParserOptions::default())?)
+        }
+        "www.jumbo.com.ar" => sites::jumbo::scrap(client, url, body).await,
         s => bail!("Unknown host {}", s),
     }
 }
@@ -182,8 +197,8 @@ async fn db_writer(rx: Receiver<PrecioPoint>) {
     let mut n = 0;
     while let Ok(res) = rx.recv().await {
         n += 1;
-        // println!("{}", n);
-        println!("{:?}", res)
+        println!("{}", n);
+        // println!("{:?}", res)
     }
 }
 

scraper-rs/src/sites/carrefour.rs

@@ -10,14 +10,7 @@ use super::vtex::find_product_ld;
 pub fn parse(url: String, dom: &tl::VDom) -> Result<PrecioPoint, anyhow::Error> {
     let precio_centavos = common::price_from_meta(dom)?;
 
-    let in_stock = match common::get_meta_content(dom, "product:availability") {
-        Some(s) => match s.as_ref() {
-            "oos" => false,
-            "instock" => true,
-            _ => bail!("Not a valid product:availability"),
-        },
-        None => bail!("No product:availability in carrefour"),
-    };
+    let in_stock = vtex::in_stock_from_meta(dom)?;
 
     let ean = {
         let json = &vtex::parse_script_json(dom, "__STATE__")?;

scraper-rs/src/sites/jumbo.rs

@@ -0,0 +1,92 @@
+use std::str::FromStr;
+
+use anyhow::Context;
+use reqwest::Url;
+use serde::Deserialize;
+use simple_error::bail;
+
+use crate::sites::common;
+use crate::PrecioPoint;
+
+use super::vtex;
+
+#[derive(Deserialize)]
+struct JumboSearch {
+    items: Vec<JumboSearchItem>,
+}
+#[derive(Deserialize)]
+struct JumboSearchItem {
+    ean: String,
+}
+
+async fn get_ean_from_search(
+    client: &reqwest::Client,
+    retailer_sku: String,
+) -> anyhow::Result<String> {
+    let s = client
+        .get({
+            let mut url =
+                Url::from_str("https://www.jumbo.com.ar/api/catalog_system/pub/products/search")
+                    .unwrap();
+            url.set_query(Some(&format!("fq=skuId:{}", retailer_sku)));
+            url
+        })
+        .send()
+        .await?
+        .text()
+        .await?;
+    let ean = {
+        let search: Vec<JumboSearch> = serde_json::from_str(&s)?;
+        let result = search.first().context("No search result")?;
+        let ean = result
+            .items
+            .first()
+            .context("No search result")?
+            .ean
+            .clone();
+        if !result.items.iter().all(|i| i.ean == ean) {
+            bail!("Inesperado: no todos los items tienen el mismo EAN")
+        }
+        ean
+    };
+    Ok(ean)
+}
+
+pub async fn scrap(
+    client: &reqwest::Client,
+    url: String,
+    body: &str,
+) -> Result<PrecioPoint, anyhow::Error> {
+    let (name, image_url, sku, precio_centavos, in_stock) = {
+        let dom = tl::parse(body, tl::ParserOptions::default())?;
+        let precio_centavos = common::price_from_meta(&dom)?;
+        let in_stock = vtex::in_stock_from_meta(&dom)?;
+
+        match vtex::find_product_ld(&dom) {
+            Some(pm) => {
+                let p = pm?;
+                (
+                    Some(p.name),
+                    Some(p.image),
+                    p.sku.context("No retailer SKU in Product LD")?,
+                    precio_centavos,
+                    in_stock,
+                )
+            }
+            None => bail!("No JSON/LD"),
+        }
+    };
+
+    let ean = get_ean_from_search(client, sku).await?;
+
+    Ok(PrecioPoint {
+        ean,
+        fetched_at: crate::now_sec(),
+        in_stock: Some(in_stock),
+        name,
+        image_url,
+        parser_version: 5,
+        precio_centavos,
+        url,
+    })
+}

scraper-rs/src/sites/mod.rs

@@ -2,4 +2,5 @@ pub mod carrefour;
 mod common;
 pub mod coto;
 pub mod dia;
+pub mod jumbo;
 mod vtex;

scraper-rs/src/sites/vtex.rs

@@ -1,8 +1,10 @@
-use anyhow::Context;
+use anyhow::{bail, Context};
 use serde::Deserialize;
 use simple_error::SimpleError;
 use tl::VDom;
 
+use super::common;
+
 pub fn parse_script_json(dom: &VDom, varname: &str) -> Result<serde_json::Value, anyhow::Error> {
     let inner_html = &dom
         .query_selector("template[data-type=\"json\"]")
@@ -85,3 +87,16 @@ pub enum AvailabilityLd {
     #[serde(rename = "http://schema.org/OutOfStock")]
     OutOfStock,
 }
+
+pub fn in_stock_from_meta(dom: &VDom) -> anyhow::Result<bool> {
+    Ok(
+        match common::get_meta_content(dom, "product:availability") {
+            Some(s) => match s.as_ref() {
+                "oos" => false,
+                "instock" => true,
+                _ => bail!("Not a valid product:availability"),
+            },
+            None => bail!("No product:availability in carrefour"),
+        },
+    )
+}