error when error in best selling

.vscode/settings.json

@@ -1,4 +1,5 @@
 {
   "spellright.language": ["es_AR"],
-  "spellright.documentTypes": ["markdown", "latex", "plaintext"]
+  "spellright.documentTypes": ["markdown", "latex", "plaintext"],
+  "editor.formatOnSave": true
 }

scraper-rs/Cargo.toml

@@ -18,12 +18,13 @@ html-escape = "0.2.13"
 itertools = "0.12.0"
 nanoid = "0.4.0"
 quick-xml = "0.31.0"
-rand = "0.8.5"
-reqwest = { version = "0.11.23", default-features = false, features = [
+rand = "0.8"
+reqwest = { version = "0.12", default-features = false, features = [
     "rustls-tls",
     "gzip",
     "brotli",
     "socks",
+    "json",
 ] }
 rusqlite = "0.30.0"
 serde = { version = "1.0.193", features = ["derive"] }

scraper-rs/src/auto.rs

@@ -0,0 +1,123 @@
+use super::now_sec;
+use super::supermercado::Supermercado;
+use super::AutoArgs;
+use super::AutoTelegram;
+use crate::best_selling;
+use crate::db::Db;
+use crate::scraper::Scraper;
+use futures::Future;
+use reqwest::Url;
+
+#[derive(Clone)]
+pub struct Auto {
+    pub db: Db,
+    pub telegram: Option<AutoTelegram>,
+    pub args: AutoArgs,
+    pub scraper: Scraper,
+}
+
+impl Auto {
+    pub async fn download_supermercado(self, supermercado: Supermercado) -> anyhow::Result<()> {
+        {
+            let t0 = now_sec();
+            match self.get_and_save_urls(&supermercado).await {
+                Ok(_) => {
+                    self.inform(&format!(
+                        "Downloaded url list {:?} (took {})",
+                        &supermercado,
+                        now_sec() - t0
+                    ))
+                    .await
+                }
+                Err(err) => {
+                    self.inform(&format!(
+                        "[{:?}] FAILED url list: {:?} (took {})",
+                        &supermercado,
+                        err,
+                        now_sec() - t0
+                    ))
+                    .await
+                }
+            }
+        }
+        let links: Vec<String> = {
+            let mut links = self.db.get_urls_by_domain(supermercado.host()).await?;
+            if let Some(n) = self.args.n_products {
+                links.truncate(n);
+            }
+            links
+        };
+        // {
+        //     let debug_path = PathBuf::from("debug/");
+        //     tokio::fs::create_dir_all(&debug_path).await.unwrap();
+        //     let file_path = debug_path.join(format!("{}.txt", nanoid!()));
+        //     tokio::fs::write(&file_path, &links.join("\n"))
+        //         .await
+        //         .unwrap();
+        //     tracing::info!("Lista de {:?}: {:?}", &supermercado, file_path.display());
+        // }
+        {
+            let t0 = now_sec();
+            let counters = self.scraper.fetch_list(&self.db, links).await;
+            self.inform(&format!(
+                "Downloaded {:?}: {:?} (took {})",
+                &supermercado,
+                counters,
+                now_sec() - t0
+            ))
+            .await;
+        }
+
+        Ok(())
+    }
+
+    pub async fn download_best_selling(&self) -> anyhow::Result<()> {
+        // let best_selling: Vec<best_selling::BestSellingRecord> =
+
+        match self
+            .inform_time(
+                "Downloaded best selling",
+                best_selling::get_all_best_selling(&self.db),
+            )
+            .await
+        {
+            Ok(best_selling) => {
+                self.db.save_best_selling(best_selling).await?;
+            }
+            Err(err) => {
+                self.inform(&format!("FAILED best selling: {:?}", err))
+                    .await
+            }
+        }
+        Ok(())
+    }
+
+    pub async fn inform_time<T: Future<Output = R>, R>(&self, msg: &str, action: T) -> R {
+        let t0 = now_sec();
+        let res = action.await;
+        self.inform(&format!("{} (took {})", msg, now_sec() - t0))
+            .await;
+        res
+    }
+
+    pub async fn get_and_save_urls(&self, supermercado: &Supermercado) -> anyhow::Result<()> {
+        let urls = self.scraper.get_urls_for_supermercado(supermercado).await?;
+        self.db.save_producto_urls(urls).await?;
+        Ok(())
+    }
+
+    pub async fn inform(&self, msg: &str) {
+        tracing::info!("{}", msg);
+        if let Some(telegram) = &self.telegram {
+            let u = Url::parse_with_params(
+                &format!("https://api.telegram.org/bot{}/sendMessage", telegram.token),
+                &[
+                    ("chat_id", telegram.chat_id.clone()),
+                    ("text", msg.to_string()),
+                ],
+            )
+            .unwrap();
+            reqwest::get(u).await.unwrap();
+        }
+    }
+}

scraper-rs/src/best_selling.rs

@@ -3,8 +3,9 @@ use std::collections::HashMap;
 use crate::{build_client, db::Db, sites::vtex, supermercado::Supermercado};
 use chrono::{DateTime, Utc};
 use clap::ValueEnum;
-use futures::{stream, FutureExt, StreamExt, TryStreamExt};
+use futures::{stream, FutureExt, StreamExt};
 use itertools::Itertools;
+use simple_error::SimpleError;
 use tracing::warn;
 
 #[derive(ValueEnum, Clone, Debug)]
@@ -77,10 +78,6 @@ async fn try_get_best_selling_eans(
     }
 }
 
-async fn noop<T>(t: T) -> anyhow::Result<T> {
-    Ok(t)
-}
-
 fn rank_eans(eans: Vec<Vec<String>>) -> Vec<String> {
     let mut map: HashMap<String, usize> = HashMap::new();
     for eans in eans {
@@ -98,34 +95,49 @@ fn rank_eans(eans: Vec<Vec<String>>) -> Vec<String> {
 
 pub async fn get_all_best_selling(db: &Db) -> anyhow::Result<Vec<BestSellingRecord>> {
     let client = &build_client();
-
-    stream::iter(Category::value_variants())
+    let records = stream::iter(Category::value_variants())
         .map(|category| {
             stream::iter(Supermercado::value_variants())
                 .map(|supermercado| {
-                    let db = db.clone();
-                    let client = client.clone();
                     tokio::spawn(try_get_best_selling_eans(
-                        client,
-                        db,
+                        client.clone(),
+                        db.clone(),
                         supermercado,
                         category,
                     ))
                 })
                 .buffer_unordered(5)
                 .map(|f| f.unwrap())
-                .try_filter_map(noop)
-                .try_collect::<Vec<Vec<String>>>()
+                .filter_map(|r| async {
+                    match r {
+                        Err(err) => {
+                            tracing::error!("Error getting best selling: {}", err);
+                            None
+                        }
+                        Ok(v) => v,
+                    }
+                })
+                .collect::<Vec<Vec<String>>>()
                 .map(|r| {
-                    r.map(rank_eans).map(|eans| BestSellingRecord {
+                    let ranked = rank_eans(r);
+                    if ranked.is_empty() {
+                        return None;
+                    }
+                    Some(BestSellingRecord {
                         fetched_at: Utc::now(),
                         category: category.clone(),
-                        eans,
+                        eans: ranked,
                     })
                 })
         })
         .buffer_unordered(5)
         .boxed()
-        .try_collect()
-        .await
+        .filter_map(|f| async { f })
+        .collect::<Vec<BestSellingRecord>>()
+        .await;
+    if records.len() < Category::value_variants().len() {
+        Err(SimpleError::new("Too few BestSellingRecords").into())
+    } else {
+        Ok(records)
+    }
 }

scraper-rs/src/main.rs

@@ -1,12 +1,12 @@
 use again::RetryPolicy;
-use chrono::{DateTime, Utc};
 use clap::{Parser, ValueEnum};
 use cron::Schedule;
 use db::Db;
-use futures::{future, stream, Future, StreamExt, TryFutureExt};
+use futures::{future, TryFutureExt};
 
-use reqwest::{header::HeaderMap, StatusCode, Url};
-use simple_error::{bail, SimpleError};
+use reqwest::{header::HeaderMap, IntoUrl, StatusCode};
+use scraper::Scraper;
+use simple_error::SimpleError;
 use std::{
     env::{self},
     fs,
@@ -17,6 +17,10 @@ use thiserror::Error;
 
 mod supermercado;
 use supermercado::Supermercado;
+mod auto;
+use auto::Auto;
+mod proxy_client;
+mod scraper;
 
 #[derive(Parser)] // requires `derive` feature
 enum Args {
@@ -54,7 +58,7 @@ struct AutoArgs {
 }
 
 #[tokio::main]
-async fn main() -> anyhow::Result<()> {
+async fn main() -> () {
     tracing_subscriber::fmt::init();
 
     match Args::parse() {
@@ -66,11 +70,12 @@ async fn main() -> anyhow::Result<()> {
         Args::Auto(a) => auto_cli(a).await,
         Args::Cron(_) => cron_cli().await,
     }
+    .unwrap()
 }
 
 async fn scrap_url_cli(url: String) -> anyhow::Result<()> {
-    let client = build_client();
-    let res = fetch_and_parse(&client, url.clone()).await;
+    let scraper = Scraper::from_env().await?;
+    let res = scraper.fetch_and_scrap(url.clone()).await;
 
     println!("Result: {:#?}", res);
     res.map(|_| ())
@@ -94,37 +99,13 @@ async fn fetch_list_cli(links_list_path: String) -> anyhow::Result<()> {
         .collect::<Vec<_>>();
 
     let db = Db::connect().await?;
-    let counters = fetch_list(&db, links).await;
+    let scraper = Scraper::from_env().await?;
+    let counters = scraper.fetch_list(&db, links).await;
 
     println!("Finished: {:?}", counters);
     Ok(())
 }
 
-async fn fetch_list(db: &Db, links: Vec<String>) -> Counters {
-    let n_coroutines = env::var("N_COROUTINES")
-        .map_or(Ok(24), |s| s.parse::<usize>())
-        .expect("N_COROUTINES no es un número");
-
-    let client = build_client();
-
-    stream::iter(links)
-        .map(|url| {
-            let db = db.clone();
-            let client = client.clone();
-            tokio::spawn(fetch_and_save(client, url, db))
-        })
-        .buffer_unordered(n_coroutines)
-        .fold(Counters::default(), move |x, y| {
-            let ret = y.unwrap();
-            future::ready(Counters {
-                success: x.success + ret.success,
-                errored: x.errored + ret.errored,
-                skipped: x.skipped + ret.skipped,
-            })
-        })
-        .await
-}
-
 mod db;
 
 #[derive(Default, Debug)]
@@ -134,29 +115,6 @@ struct Counters {
     skipped: u64,
 }
 
-async fn fetch_and_save(client: reqwest::Client, url: String, db: Db) -> Counters {
-    let res = fetch_and_parse(&client, url.clone()).await;
-    let mut counters = Counters::default();
-    match res {
-        Ok(res) => {
-            counters.success += 1;
-            db.insert_precio(res).await.unwrap();
-        }
-        Err(err) => {
-            match err.downcast_ref::<reqwest::Error>() {
-                Some(e) => match e.status() {
-                    Some(StatusCode::NOT_FOUND) => counters.skipped += 1,
-                    _ => counters.errored += 1,
-                },
-                _ => counters.errored += 1,
-            }
-
-            tracing::error!(error=%err, url=url);
-        }
-    }
-    counters
-}
-
 #[derive(Debug, Error)]
 enum FetchError {
     #[error("parse error")]
@@ -182,28 +140,14 @@ fn build_client() -> reqwest::Client {
         .build()
         .unwrap()
 }
-fn build_coto_client() -> reqwest::Client {
-    reqwest::ClientBuilder::default()
-        .timeout(Duration::from_secs(300))
-        .connect_timeout(Duration::from_secs(150))
-        .default_headers(build_header_map())
-        .build()
-        .unwrap()
-}
-pub async fn do_request(client: &reqwest::Client, url: &str) -> reqwest::Result<reqwest::Response> {
+pub async fn do_request<U: IntoUrl>(
+    client: &reqwest::Client,
+    url: U,
+) -> reqwest::Result<reqwest::Response> {
     let request = client.get(url).build()?;
     let response = client.execute(request).await?.error_for_status()?;
     Ok(response)
 }
-async fn request_and_body(client: &reqwest::Client, url: &str) -> reqwest::Result<String> {
-    let res = do_request(client, url).await?;
-    res.text().await
-}
-pub async fn fetch_body(client: &reqwest::Client, url: &str) -> reqwest::Result<String> {
-    get_fetch_retry_policy()
-        .retry_if(|| request_and_body(client, url), retry_if_wasnt_not_found)
-        .await
-}
 
 pub fn get_fetch_retry_policy() -> again::RetryPolicy {
     RetryPolicy::exponential(Duration::from_millis(300))
@@ -222,51 +166,17 @@ pub fn get_parse_retry_policy() -> again::RetryPolicy {
 pub fn retry_if_wasnt_not_found(err: &reqwest::Error) -> bool {
     !err.status().is_some_and(|s| s == StatusCode::NOT_FOUND)
 }
-
-#[tracing::instrument(skip(client))]
-async fn fetch_and_parse(
-    client: &reqwest::Client,
-    url: String,
-) -> Result<PrecioPoint, anyhow::Error> {
-    async fn fetch_and_scrap(
-        client: &reqwest::Client,
-        url: String,
-    ) -> Result<PrecioPoint, anyhow::Error> {
-        let body = fetch_body(client, &url).await?;
-        let maybe_point = { scrap_url(client, url, &body).await };
-
-        let point = match maybe_point {
-            Ok(p) => Ok(p),
-            Err(err) => {
-                let now: DateTime<Utc> = Utc::now();
-                // let debug_path = PathBuf::from(format!("debug-{}/", now.format("%Y-%m-%d")));
-                // tokio::fs::create_dir_all(&debug_path).await.unwrap();
-                // let file_path = debug_path.join(format!("{}.html", nanoid!()));
-                // tokio::fs::write(&file_path, &body).await.unwrap();
-                // tracing::debug!(error=%err, "Failed to parse, saved body at {}",file_path.display());
-                tracing::debug!(error=%err, "Failed to parse");
-                Err(err)
-            }
-        }?;
-
-        Ok(point)
-    }
-
-    get_parse_retry_policy()
-        .retry_if(
-            || fetch_and_scrap(client, url.clone()),
-            |err: &anyhow::Error| match err.downcast_ref::<reqwest::Error>() {
-                Some(e) => !e.status().is_some_and(|s| s == StatusCode::NOT_FOUND),
+pub fn anyhow_retry_if_wasnt_not_found(err: &anyhow::Error) -> bool {
+    match err.downcast_ref::<reqwest::Error>() {
+        Some(e) => retry_if_wasnt_not_found(e),
         None => true,
-            },
-        )
-        .await
+    }
 }
 
 async fn parse_file_cli(file_path: String) -> anyhow::Result<()> {
     let file = tokio::fs::read_to_string(file_path).await?;
 
-    let client = build_client();
+    let scraper = Scraper::from_env().await?;
 
     let url = {
         let dom = tl::parse(&file, tl::ParserOptions::default())?;
@@ -281,12 +191,13 @@ async fn parse_file_cli(file_path: String) -> anyhow::Result<()> {
     };
 
     println!("URL: {}", &url);
-    println!("{:?}", scrap_url(&client, url, &file).await);
+    println!("{:?}", scraper.scrap_url(url, &file).await);
     Ok(())
 }
 
 async fn get_url_list_cli(supermercado: Supermercado) -> anyhow::Result<()> {
-    let urls = get_urls(&supermercado).await?;
+    let scraper = Scraper::from_env().await?;
+    let urls = scraper.get_urls_for_supermercado(&supermercado).await?;
     urls.iter().for_each(|s| {
         println!("{}", s);
     });
@@ -294,137 +205,12 @@ async fn get_url_list_cli(supermercado: Supermercado) -> anyhow::Result<()> {
     Ok(())
 }
 
-async fn get_urls(supermercado: &Supermercado) -> Result<Vec<String>, anyhow::Error> {
-    Ok(match supermercado {
-        Supermercado::Dia => sites::dia::get_urls().await?,
-        Supermercado::Jumbo => sites::jumbo::get_urls().await?,
-        Supermercado::Carrefour => sites::carrefour::get_urls().await?,
-        Supermercado::Coto => sites::coto::get_urls().await?,
-        Supermercado::Farmacity => sites::farmacity::get_urls().await?,
-    })
-}
-
-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, &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,
-        "www.farmacity.com" => {
-            sites::farmacity::parse(url, &tl::parse(body, tl::ParserOptions::default())?)
-        }
-        s => bail!("Unknown host {}", s),
-    }
-}
-
 #[derive(Clone)]
 struct AutoTelegram {
     token: String,
     chat_id: String,
 }
 
-#[derive(Clone)]
-struct Auto {
-    db: Db,
-    telegram: Option<AutoTelegram>,
-    args: AutoArgs,
-}
-impl Auto {
-    async fn download_supermercado(self, supermercado: Supermercado) -> anyhow::Result<()> {
-        {
-            let t0 = now_sec();
-            match self.get_and_save_urls(&supermercado).await {
-                Ok(_) => {
-                    self.inform(&format!(
-                        "Downloaded url list {:?} (took {})",
-                        &supermercado,
-                        now_sec() - t0
-                    ))
-                    .await
-                }
-                Err(err) => {
-                    self.inform(&format!(
-                        "[{:?}] FAILED url list: {:?} (took {})",
-                        &supermercado,
-                        err,
-                        now_sec() - t0
-                    ))
-                    .await
-                }
-            }
-        }
-        let links: Vec<String> = {
-            let mut links = self.db.get_urls_by_domain(supermercado.host()).await?;
-            if let Some(n) = self.args.n_products {
-                links.truncate(n);
-            }
-            links
-        };
-        // {
-        //     let debug_path = PathBuf::from("debug/");
-        //     tokio::fs::create_dir_all(&debug_path).await.unwrap();
-        //     let file_path = debug_path.join(format!("{}.txt", nanoid!()));
-        //     tokio::fs::write(&file_path, &links.join("\n"))
-        //         .await
-        //         .unwrap();
-        //     tracing::info!("Lista de {:?}: {:?}", &supermercado, file_path.display());
-        // }
-        {
-            let t0 = now_sec();
-            let counters = fetch_list(&self.db, links).await;
-            self.inform(&format!(
-                "Downloaded {:?}: {:?} (took {})",
-                &supermercado,
-                counters,
-                now_sec() - t0
-            ))
-            .await;
-        }
-
-        Ok(())
-    }
-
-    async fn inform_time<T: Future<Output = R>, R>(&self, msg: &str, action: T) -> R {
-        let t0 = now_sec();
-        let res = action.await;
-        self.inform(&format!("{} (took {})", msg, now_sec() - t0))
-            .await;
-        res
-    }
-
-    async fn get_and_save_urls(&self, supermercado: &Supermercado) -> anyhow::Result<()> {
-        let urls = get_urls(supermercado).await?;
-        self.db.save_producto_urls(urls).await?;
-        Ok(())
-    }
-
-    async fn inform(&self, msg: &str) {
-        tracing::info!("{}", msg);
-        if let Some(telegram) = &self.telegram {
-            let u = Url::parse_with_params(
-                &format!("https://api.telegram.org/bot{}/sendMessage", telegram.token),
-                &[
-                    ("chat_id", telegram.chat_id.clone()),
-                    ("text", msg.to_string()),
-                ],
-            )
-            .unwrap();
-            reqwest::get(u).await.unwrap();
-        }
-    }
-}
-
 async fn auto_cli(args: AutoArgs) -> anyhow::Result<()> {
     let auto = {
         let db = Db::connect().await?;
@@ -440,7 +226,12 @@ async fn auto_cli(args: AutoArgs) -> anyhow::Result<()> {
                 }
             }
         };
-        Auto { db, telegram, args }
+        Auto {
+            db,
+            telegram,
+            args,
+            scraper: Scraper::from_env().await?,
+        }
     };
     auto.inform("[auto] Empezando scrap").await;
 
@@ -452,7 +243,7 @@ async fn auto_cli(args: AutoArgs) -> anyhow::Result<()> {
     let handles: Vec<_> = supermercados
         .iter()
         .map(|s| {
-            let x = s.clone();
+            let x = *s;
             tokio::spawn(
                 auto.clone()
                     .download_supermercado(s.to_owned())
@@ -465,13 +256,7 @@ async fn auto_cli(args: AutoArgs) -> anyhow::Result<()> {
     future::try_join_all(handles).await?;
     auto.inform("[auto] Download supermercados finished").await;
 
-    let best_selling = auto
-        .inform_time(
-            "Downloaded best selling",
-            best_selling::get_all_best_selling(&auto.db),
-        )
-        .await?;
-    auto.db.save_best_selling(best_selling).await?;
+    auto.download_best_selling().await?;
 
     Ok(())
 }

scraper-rs/src/proxy_client.rs

@@ -0,0 +1,58 @@
+use std::time::Duration;
+
+use itertools::Itertools;
+use rand::Rng;
+use reqwest::{IntoUrl, Url};
+
+use crate::build_header_map;
+
+#[derive(Debug, Clone)]
+pub struct ProxyClient {
+    // proxies: Vec<Url>,
+    clients: Vec<reqwest::Client>,
+}
+
+impl ProxyClient {
+    pub fn from_proxy_list(proxies: &str) -> anyhow::Result<Self> {
+        let proxies = Self::parse_proxy_list(proxies)?;
+        let clients = if proxies.is_empty() {
+            tracing::warn!("No proxies available; using no proxy");
+            vec![Self::client_builder().build()?]
+        } else {
+            proxies
+                .clone()
+                .into_iter()
+                .map(Self::build_client_with_proxy)
+                .try_collect()?
+        };
+        Ok(Self { clients })
+    }
+
+    fn parse_proxy_list(proxies: &str) -> anyhow::Result<Vec<Url>> {
+        Ok(proxies
+            .split("\n")
+            .filter(|s| !s.trim().is_empty())
+            .map(Url::parse)
+            .try_collect()?)
+    }
+    fn client_builder() -> reqwest::ClientBuilder {
+        reqwest::ClientBuilder::default()
+            .timeout(Duration::from_secs(300))
+            .connect_timeout(Duration::from_secs(150))
+            .default_headers(build_header_map())
+    }
+    fn build_client_with_proxy(proxy: Url) -> reqwest::Result<reqwest::Client> {
+        Self::client_builder()
+            .proxy(reqwest::Proxy::all(proxy)?)
+            .build()
+    }
+
+    pub async fn do_request(
+        &self,
+        url: impl IntoUrl + Clone,
+    ) -> reqwest::Result<reqwest::Response> {
+        let client = self.clients[rand::thread_rng().gen_range(0..self.clients.len())].clone();
+        let req = client.get(url.clone()).build()?;
+        client.execute(req).await
+    }
+}

scraper-rs/src/scraper.rs

@@ -0,0 +1,175 @@
+use std::env;
+
+use futures::{future, stream, StreamExt};
+use reqwest::{StatusCode, Url};
+use simple_error::bail;
+use tokio::fs;
+
+use crate::{
+    anyhow_retry_if_wasnt_not_found, build_client, db::Db, get_fetch_retry_policy,
+    get_parse_retry_policy, proxy_client::ProxyClient, sites, supermercado::Supermercado, Counters,
+    PrecioPoint,
+};
+
+#[derive(Debug, Clone)]
+pub struct Scraper {
+    default_client: reqwest::Client,
+    proxy_client: ProxyClient,
+}
+
+impl Scraper {
+    pub async fn from_env() -> anyhow::Result<Self> {
+        let proxy_list = match env::var("PROXY_LIST") {
+            Ok(list) => list,
+            Err(_) => match env::var("PROXY_LIST_PATH") {
+                Ok(path) => fs::read_to_string(path).await?,
+                Err(_) => "".to_owned(),
+            },
+        };
+        Self::build(&proxy_list)
+    }
+    pub fn build(proxy_list: &str) -> anyhow::Result<Self> {
+        Ok(Self {
+            default_client: build_client(),
+            proxy_client: ProxyClient::from_proxy_list(proxy_list)?,
+        })
+    }
+
+    pub async fn get_urls_for_supermercado(
+        &self,
+        supermercado: &Supermercado,
+    ) -> anyhow::Result<Vec<String>> {
+        match supermercado {
+            Supermercado::Dia => sites::dia::get_urls().await,
+            Supermercado::Jumbo => sites::jumbo::get_urls().await,
+            Supermercado::Carrefour => sites::carrefour::get_urls().await,
+            Supermercado::Coto => sites::coto::get_urls(&self.proxy_client).await,
+            Supermercado::Farmacity => sites::farmacity::get_urls().await,
+        }
+    }
+
+    #[tracing::instrument(skip(self))]
+    pub async fn fetch_and_scrap(&self, url: String) -> Result<PrecioPoint, anyhow::Error> {
+        async fn fetch_and_scrap(
+            scraper: &Scraper,
+            url: String,
+        ) -> Result<PrecioPoint, anyhow::Error> {
+            let body = scraper.fetch_body(&url).await?;
+            let maybe_point = { scraper.scrap_url(url, &body).await };
+
+            let point = match maybe_point {
+                Ok(p) => Ok(p),
+                Err(err) => {
+                    // let now: DateTime<Utc> = Utc::now();
+                    // let debug_path = PathBuf::from(format!("debug-{}/", now.format("%Y-%m-%d")));
+                    // tokio::fs::create_dir_all(&debug_path).await.unwrap();
+                    // let file_path = debug_path.join(format!("{}.html", nanoid!()));
+                    // tokio::fs::write(&file_path, &body).await.unwrap();
+                    // tracing::debug!(error=%err, "Failed to parse, saved body at {}",file_path.display());
+                    tracing::debug!(error=%err, "Failed to parse");
+                    Err(err)
+                }
+            }?;
+
+            Ok(point)
+        }
+
+        get_parse_retry_policy()
+            .retry_if(
+                || fetch_and_scrap(self, url.clone()),
+                anyhow_retry_if_wasnt_not_found,
+            )
+            .await
+    }
+
+    async fn fetch_body(&self, url_string: &str) -> anyhow::Result<String> {
+        let url = Url::parse(url_string)?;
+
+        get_fetch_retry_policy()
+            .retry_if(
+                || self.request_and_body(url.clone()),
+                anyhow_retry_if_wasnt_not_found,
+            )
+            .await
+    }
+
+    async fn request_and_body(&self, url: Url) -> anyhow::Result<String> {
+        let res = match Supermercado::from_url(&url) {
+            Some(Supermercado::Coto) => self.proxy_client.do_request(url).await?,
+            _ => self
+                .default_client
+                .execute(self.default_client.get(url).build()?)
+                .await?
+                .error_for_status()?,
+        };
+        Ok(res.text().await?)
+    }
+
+    pub async fn fetch_and_save(&self, url: String, db: Db) -> Counters {
+        let res = self.fetch_and_scrap(url.clone()).await;
+        let mut counters = Counters::default();
+        match res {
+            Ok(res) => {
+                counters.success += 1;
+                db.insert_precio(res).await.unwrap();
+            }
+            Err(err) => {
+                match err.downcast_ref::<reqwest::Error>() {
+                    Some(e) => match e.status() {
+                        Some(StatusCode::NOT_FOUND) => counters.skipped += 1,
+                        _ => counters.errored += 1,
+                    },
+                    _ => counters.errored += 1,
+                }
+
+                tracing::error!(error=%err, url=url);
+            }
+        }
+        counters
+    }
+
+    pub async fn fetch_list(&self, db: &Db, links: Vec<String>) -> Counters {
+        let n_coroutines = env::var("N_COROUTINES")
+            .map_or(Ok(24), |s| s.parse::<usize>())
+            .expect("N_COROUTINES no es un número");
+
+        stream::iter(links)
+            .map(|url| {
+                let db = db.clone();
+                let scraper = self.clone();
+                tokio::spawn(async move { scraper.fetch_and_save(url, db).await })
+            })
+            .buffer_unordered(n_coroutines)
+            .fold(Counters::default(), move |x, y| {
+                let ret = y.unwrap();
+                future::ready(Counters {
+                    success: x.success + ret.success,
+                    errored: x.errored + ret.errored,
+                    skipped: x.skipped + ret.skipped,
+                })
+            })
+            .await
+    }
+
+    pub async fn scrap_url(&self, url: String, res_body: &str) -> anyhow::Result<PrecioPoint> {
+        let url_p = Url::parse(&url).unwrap();
+        match Supermercado::from_url(&url_p) {
+            Some(Supermercado::Carrefour) => {
+                sites::carrefour::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
+            }
+            Some(Supermercado::Dia) => {
+                sites::dia::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
+            }
+            Some(Supermercado::Coto) => {
+                sites::coto::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
+            }
+            Some(Supermercado::Jumbo) => {
+                sites::jumbo::scrap(&self.default_client, url, res_body).await
+            }
+            Some(Supermercado::Farmacity) => {
+                sites::farmacity::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
+            }
+            None => bail!("Unknown URL host {}", url),
+        }
+    }
+}

scraper-rs/src/sites/coto.rs

@@ -1,10 +1,10 @@
 use anyhow::{anyhow, Context};
-use futures::{stream, StreamExt, TryFutureExt, TryStreamExt};
+use futures::{stream, StreamExt, TryStreamExt};
 use itertools::Itertools;
 use reqwest::Url;
 
 use crate::{
-    build_client, build_coto_client, do_request, get_fetch_retry_policy, retry_if_wasnt_not_found, PrecioPoint
+    anyhow_retry_if_wasnt_not_found, get_fetch_retry_policy, proxy_client::ProxyClient, PrecioPoint,
 };
 
 pub fn parse(url: String, dom: &tl::VDom) -> Result<PrecioPoint, anyhow::Error> {
@@ -78,11 +78,10 @@ pub fn parse(url: String, dom: &tl::VDom) -> Result<PrecioPoint, anyhow::Error>
     })
 }
 
-pub async fn get_urls() -> anyhow::Result<Vec<String>> {
-    let client = build_coto_client();
+pub async fn get_urls(proxy_client: &ProxyClient) -> anyhow::Result<Vec<String>> {
     let initial = Url::parse("https://www.cotodigital3.com.ar/sitios/cdigi/browse?Nf=product.endDate%7CGTEQ+1.7032032E12%7C%7Cproduct.startDate%7CLTEQ+1.7032032E12&Nr=AND%28product.sDisp_200%3A1004%2Cproduct.language%3Aespa%C3%B1ol%2COR%28product.siteId%3ACotoDigital%29%29")?;
 
-    let page_size = 50;
+    let page_size = 100;
     let handles: Vec<Vec<String>> = stream::iter(0..29000 / page_size)
         .map(|i| {
             let mut u = initial.clone();
@@ -90,12 +89,21 @@ pub async fn get_urls() -> anyhow::Result<Vec<String>> {
                 .append_pair("No", &(i * page_size).to_string())
                 .append_pair("Nrpp", &(page_size).to_string())
                 .finish();
-            let client = &client;
             async move {
-                let text = get_fetch_retry_policy()
+                let text: String = get_fetch_retry_policy()
                     .retry_if(
-                        || do_request(client, u.as_str()).and_then(|r| r.text()),
-                        retry_if_wasnt_not_found,
+                        || {
+                            async fn asdf(
+                                proxy_client: &ProxyClient,
+                                url: Url,
+                            ) -> anyhow::Result<String> {
+                                let res = proxy_client.do_request(url).await?.error_for_status()?;
+                                Ok(res.text().await?)
+                            }
+                            let url = u.clone();
+                            asdf(proxy_client, url)
+                        },
+                        anyhow_retry_if_wasnt_not_found,
                     )
                     .await?;
                 let dom = tl::parse(&text, tl::ParserOptions::default())?;
@@ -126,6 +134,7 @@ pub async fn get_urls() -> anyhow::Result<Vec<String>> {
                             })
                     })
                     .try_collect()?;
+                tracing::debug!("got {} products", list.len());
                 Ok::<Vec<String>, anyhow::Error>(list)
             }
         })

scraper-rs/src/sites/vtex.rs

@@ -81,8 +81,8 @@ pub struct OffersLd {
 pub struct OfferLd {
     #[serde(rename = "@type")]
     _type: OfferTypeLd,
-    pub price: f64,
-    pub price_currency: String,
+    // pub price: f64,
+    // pub price_currency: String,
     pub availability: AvailabilityLd,
 }
 #[derive(Deserialize)]
@@ -207,14 +207,14 @@ pub async fn get_best_selling_by_category(
             .append_pair("extensions", &{
                 let variables_obj = json!({"hideUnavailableItems":true,"skusFilter":"FIRST_AVAILABLE","simulationBehavior":"default","installmentCriteria":"MAX_WITHOUT_INTEREST","productOriginVtex":false,"map":"c","query":query,"orderBy":"OrderByTopSaleDESC","from":0,"to":99,"selectedFacets":
                     query.split('/').map(|f| json!({"key":"c","value":f})).collect::<Vec<_>>()
-                ,"facetsBehavior":"Static","categoryTreeBehavior":"default","withFacets":false});
+                ,"facetsBehavior":"Static","categoryTreeBehavior":"default","withFacets":false,"showSponsored":false});
                 let b64=base64::prelude::BASE64_STANDARD.encode(variables_obj.to_string());
 
                 format!(
                     r#"{{
                         "persistedQuery": {{
                             "version": 1,
-                            "sha256Hash": "40b843ca1f7934d20d05d334916220a0c2cae3833d9f17bcb79cdd2185adceac",
+                            "sha256Hash": "fd92698fe375e8e4fa55d26fa62951d979b790fcf1032a6f02926081d199f550",
                             "sender": "vtex.store-resources@0.x",
                             "provider": "vtex.search-graphql@0.x"
                         }},
@@ -225,19 +225,30 @@ pub async fn get_best_selling_by_category(
         url
     };
     let body = fetch_body(client, url.as_str()).await?;
-    let urls: Vec<String> = serde_json::from_str::<serde_json::Value>(&body)?
+    tracing::debug!("best selling body: {}", body);
+    let json = &serde_json::from_str::<serde_json::Value>(&body)?;
+    if let Some(errors_array) = json.pointer("/errors") {
+        if let Some(error_messages) = errors_array.as_array().map(|a| {
+            a.into_iter()
+                .map(|obj| obj.get("message").and_then(|v| v.as_str()))
+                .collect_vec()
+        }) {
+            bail!("Errors from API: {:?}", error_messages);
+        } else {
+            bail!("Unknown error from API")
+        }
+    }
+    let urls: Vec<String> = json
         .pointer("/data/productSearch/products")
         .and_then(|v| v.as_array())
-        .map(|a| {
-            a.iter()
+        .ok_or(SimpleError::new("failed to get best selling product urls"))?
+        .iter()
         .filter_map(|p| {
             p.get("link")
                 .and_then(|v| v.as_str())
                 .map(|s| format!("https://{}{}", domain, s))
         })
-                .collect()
-        })
-        .ok_or(SimpleError::new("failed to get best selling product urls"))?;
+        .collect();
 
     if urls.len() < 2 {
         bail!("Too few best selling");

scraper-rs/src/supermercado.rs

@@ -1,4 +1,5 @@
 use clap::ValueEnum;
+use reqwest::Url;
 
 #[derive(ValueEnum, Clone, Debug, Copy)]
 pub enum Supermercado {
@@ -18,4 +19,14 @@ impl Supermercado {
             Self::Farmacity => "www.farmacity.com",
         }
     }
+    pub fn from_url(url: &Url) -> Option<Self> {
+        match url.host_str().unwrap() {
+            "www.carrefour.com.ar" => Some(Self::Carrefour),
+            "diaonline.supermercadosdia.com.ar" => Some(Self::Dia),
+            "www.cotodigital3.com.ar" => Some(Self::Coto),
+            "www.jumbo.com.ar" => Some(Self::Jumbo),
+            "www.farmacity.com" => Some(Self::Farmacity),
+            _ => None,
+        }
+    }
 }