refactor: centralize HTTP client creation with dynamic user agent

Cargo.lock

@@ -75,6 +75,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 name = "cggitem_sets"
 version = "1.0.0"
 dependencies = [
+ "chrono",
  "indexmap",
  "log",
  "logsy",

Cargo.toml

@@ -6,6 +6,7 @@ version = "1.0.0"
 include = ["src/**/*"]
 
 [dependencies]
+chrono = {version = "0.4.41", features = ["std"], default-features = false}
 indexmap = {version = "2.2", features = ["serde", "rayon"]}
 log = "0.4"
 logsy = "1.0.1"

src/kb_data_source.rs

@@ -1,13 +1,10 @@
 use crate::ChampInfo;
 use crate::Champion as ChampionLoL;
-use crate::USER_AGENT_VALUE;
 use crate::data_source::{Build, DataSource, Item, Stat};
 use indexmap::IndexMap;
 use log::error;
 use serde_derive::Deserialize;
 use serde_json::{Value, json};
-use std::time::Duration;
-use ureq::Agent;
 
 pub struct KBDataSource {
     token: Option<String>,
@@ -118,12 +115,7 @@ struct Summoner {
 }
 
 // It will be better to use Result...
-fn get_auth_token() -> Option<String> {
-    let client: Agent = Agent::config_builder()
-        .user_agent(USER_AGENT_VALUE)
-        .timeout_global(Some(Duration::from_secs(10)))
-        .build()
-        .into();
+fn get_auth_token(client: &ureq::Agent) -> Option<String> {
     let mut bundle = match client.get("https://koreanbuilds.net/bundle.js").call() {
         Ok(mut resp) => match resp.body_mut().read_to_string() {
             Ok(val) => val,
@@ -141,9 +133,9 @@ fn get_auth_token() -> Option<String> {
 }
 
 impl KBDataSource {
-    pub fn new() -> KBDataSource {
+    pub fn new(client: &ureq::Agent) -> KBDataSource {
         Self {
-            token: get_auth_token(),
+            token: get_auth_token(client),
         }
     }
 
@@ -371,10 +363,14 @@ impl DataSource for KBDataSource {
 mod tests {
 
     use super::*;
+    use crate::create_http_client;
+    use std::sync::LazyLock;
+
+    static CLIENT: LazyLock<ureq::Agent> = LazyLock::new(|| create_http_client());
 
     #[test]
     fn test_get_auth_token() {
-        match get_auth_token() {
+        match get_auth_token(&CLIENT) {
             Some(token) => assert!(token.len() > 0),
             None => assert!(false),
         };
@@ -382,27 +378,17 @@ mod tests {
 
     #[test]
     fn test_get_champs_with_positions_and_patch() {
-        let client = ureq::Agent::config_builder()
-            .user_agent(USER_AGENT_VALUE)
-            .timeout_global(Some(Duration::from_secs(10)))
-            .build()
-            .into();
-        let datasource = KBDataSource::new();
+        let datasource = KBDataSource::new(&CLIENT);
         let champion = ChampionLoL {
             data: IndexMap::new(),
         };
-        let champs_with_positions = datasource.get_champs_with_positions(&client, &champion);
+        let champs_with_positions = datasource.get_champs_with_positions(&CLIENT, &champion);
         assert!(champs_with_positions.len() > 0);
     }
 
     #[test]
     fn test_get_champ_data_with_win_pourcentage() {
-        let client = ureq::Agent::config_builder()
-            .user_agent(USER_AGENT_VALUE)
-            .timeout_global(Some(Duration::from_secs(10)))
-            .build()
-            .into();
-        let datasource = KBDataSource::new();
+        let datasource = KBDataSource::new(&CLIENT);
         let champ = ChampInfo {
             id: String::from("Annie"),
             name: String::from("Annie"),
@@ -411,7 +397,7 @@ mod tests {
         let result = datasource.get_champ_data_with_win_pourcentage(
             &champ,
             &vec!["MID".to_string()],
-            &client,
+            &CLIENT,
         );
         assert!(!result.is_empty());
         assert!(!result[0].1.is_empty());

src/main.rs

@@ -1,3 +1,4 @@
+use chrono::{Datelike, Local, NaiveDate};
 use indexmap::IndexMap;
 #[cfg(target_os = "windows")]
 use log::debug;
@@ -10,7 +11,6 @@ use std::io;
 use std::io::Error;
 #[cfg(target_os = "windows")]
 use std::io::ErrorKind;
-use std::ops::Deref;
 use std::path::{Path, PathBuf};
 use std::time::Instant;
 use std::{fs, thread, time};
@@ -44,8 +44,6 @@ pub struct ChampInfo {
     key: String,
 }
 
-const USER_AGENT_VALUE: &str =
-    "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0";
 const DEFAULT_LOL_CHAMPS_DIR: &str = "./champs";
 #[cfg(target_os = "windows")]
 const REG_KEY_LOL_RADS: &str = r"SOFTWARE\WOW6432Node\Riot Games\RADS";
@@ -76,11 +74,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     };
     info!("LoL Champs Folder: {}", lol_champs_dir.display());
 
-    let client: Agent = Agent::config_builder()
-        .user_agent(USER_AGENT_VALUE)
-        .timeout_global(Some(Duration::from_secs(10)))
-        .build()
-        .into();
+    let client: Agent = create_http_client();
 
     let realm: Realm = client
         .get("https://ddragon.leagueoflegends.com/realms/euw.json")
@@ -99,10 +93,10 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     info!("LoL numbers of champs: {}", champion.data.len());
 
     let data_sources: Vec<Box<dyn DataSource + Sync + Send>> =
-        vec![Box::new(KBDataSource::new()), Box::new(MSDataSource)];
+        vec![Box::new(KBDataSource::new(&client)), Box::new(MSDataSource)];
     data_sources.par_iter().for_each(|data_source| {
         let init = Instant::now();
-        execute_data_source(data_source.deref(), &client, &champion, &lol_champs_dir);
+        execute_data_source(&**data_source, &client, &champion, &lol_champs_dir);
         info!(
             "{}: done in {}s",
             data_source.get_alias(),
@@ -135,30 +129,25 @@ fn execute_data_source(
         champs.len()
     );
 
-    if data_source.get_timeout() == 0 {
-        champs.par_iter().for_each(|(id, positions)| {
-            get_and_write_item_set(
-                data_source,
-                client,
-                champion,
-                lol_champs_dir,
-                *id,
-                positions,
-            );
-        });
-    } else {
-        champs.iter().for_each(|(id, positions)| {
-            get_and_write_item_set(
-                data_source,
-                client,
-                champion,
-                lol_champs_dir,
-                *id,
-                positions,
-            );
+    let process = |(id, positions): (&u32, &Vec<String>)| {
+        get_and_write_item_set(
+            data_source,
+            client,
+            champion,
+            lol_champs_dir,
+            *id,
+            positions,
+        );
+        if data_source.get_timeout() > 0 {
             thread::sleep(Duration::from_millis(data_source.get_timeout()));
-        });
+        }
     };
+
+    if data_source.get_timeout() == 0 {
+        champs.par_iter().for_each(process);
+    } else {
+        champs.iter().for_each(process);
+    }
 }
 
 fn get_and_write_item_set(
@@ -197,6 +186,28 @@ fn get_and_write_item_set(
     }
 }
 
+fn create_http_client() -> Agent {
+    Agent::config_builder()
+        .user_agent(get_browser_user_agent())
+        .timeout_global(Some(Duration::from_secs(10)))
+        .build()
+        .into()
+}
+
+fn get_browser_user_agent() -> String {
+    let base_version = 125;
+    let start_date = NaiveDate::from_ymd_opt(2024, 4, 16).unwrap();
+    let now = Local::now().naive_local().date();
+
+    let months_between =
+        (now.year() - start_date.year()) * 12 + (now.month() as i32 - start_date.month() as i32);
+    let version = base_version + months_between;
+
+    format!(
+        "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:{version}.0) Gecko/20100101 Firefox/{version}.0"
+    )
+}
+
 #[cfg(target_os = "windows")]
 fn lol_champ_dir() -> Result<PathBuf, Error> {
     let hklm = RegKey::predef(winreg::enums::HKEY_LOCAL_MACHINE);