feat: Add timestamp as qs of url to bypass cache (#15)

Cargo.toml

@@ -21,3 +21,5 @@ serde_json = "1.0.94"
 futures = "0.3.27"
 clap = "3.1.8"
 csv = "1.1.6"
+url = "2.4.0"
+chrono = "0.4.26"

src/tester.rs

@@ -1,4 +1,6 @@
+use chrono::{DateTime, Utc};
 use futures::StreamExt;
+use url::Url;
 
 use crate::{Audit, Audits, Categories, Category, LHResult, PSIResult, PSIResultValues, Strategy};
 
@@ -21,6 +23,16 @@ const EMPTY_LH_RESULT: LHResult = LHResult {
     },
 };
 
+fn add_query_param(
+    url_str: &str,
+    param_name: &str,
+    param_value: &str,
+) -> Result<String, url::ParseError> {
+    let mut url = Url::parse(url_str)?;
+    url.query_pairs_mut().append_pair(param_name, param_value);
+    Ok(url.into())
+}
+
 /// This methods makes requests to google PSI API in batches with BUFFER_SIZE and add the result
 /// into a return list.
 /// This APIs has a though throttling and multiple times returns errors, so, when errors happen,
@@ -31,8 +43,12 @@ pub async fn get_page_audits(
     number_of_runs: i8,
     strategy: Strategy,
 ) -> Result<PSIResultValues, reqwest::Error> {
+    let now: DateTime<Utc> = Utc::now();
+    let timestamp = now.timestamp_millis().to_string();
+    let url_with_timestamp = add_query_param(url, "__v", &timestamp).unwrap();
+
     let list_urls = (0..number_of_runs).map(|_| {
-        format!("https://www.googleapis.com/pagespeedonline/v5/runPagespeed?key={api_key}&url={url}&strategy={strategy}&category=performance", url = url, api_key = token, strategy = strategy)
+        format!("https://www.googleapis.com/pagespeedonline/v5/runPagespeed?key={api_key}&url={url}&strategy={strategy}&category=performance", url = url_with_timestamp, api_key = token, strategy = strategy)
     }).collect::<Vec<String>>();
     let client = reqwest::Client::new();