extract output_csv_line

src/main.rs

@@ -118,18 +118,7 @@ async fn fetch_closing_data(
     }
 }
 
-#[async_std::main]
+fn output_csv_line(closes: Vec<f64>, from: DateTime<Utc>, symbol: &str) {
-async fn main() -> std::io::Result<()> {
-    let opts = Opts::parse();
-    let from: DateTime<Utc> = opts.from.parse().expect("Couldn't parse 'from' date");
-    let to = Utc::now();
-
-    // a simple way to output a CSV header
-    println!("period start,symbol,price,change %,min,max,30d avg");
-    for symbol in opts.symbols.split(',') {
-        let closes = fetch_closing_data(&symbol, &from, &to).await?;
-        if !closes.is_empty() {
-            // min/max of the period. unwrap() because those are Option types
     let period_max: f64 = max(&closes).unwrap();
     let period_min: f64 = min(&closes).unwrap();
     let last_price = *closes.last().unwrap_or(&0.0);
@@ -147,6 +136,20 @@ async fn main() -> std::io::Result<()> {
         period_max,
         sma.last().unwrap_or(&0.0)
     );
+}
+
+#[async_std::main]
+async fn main() -> std::io::Result<()> {
+    let opts = Opts::parse();
+    let from: DateTime<Utc> = opts.from.parse().expect("Couldn't parse 'from' date");
+    let to = Utc::now();
+
+    // a simple way to output a CSV header
+    println!("period start,symbol,price,change %,min,max,30d avg");
+    for symbol in opts.symbols.split(',') {
+        let closes = fetch_closing_data(&symbol, &from, &to).await?;
+        if !closes.is_empty() {
+            output_csv_line(closes, from, symbol);
         }
     }
     Ok(())