refactor: implement Extractor

src/extractor.rs

@@ -0,0 +1,29 @@
+use scraper::Selector;
+
+pub(crate) struct Extractor {
+    pub time: Selector,
+    pub departure: Selector,
+    pub delay: Selector,
+}
+
+impl Extractor {
+    pub(crate) fn new() -> Self {
+        Self {
+            time: Self::get_time_selector(),
+            departure: Self::get_departure_selector(),
+            delay: Self::get_late_selector(),
+        }
+    }
+
+    fn get_time_selector() -> Selector {
+        Selector::parse("div.col.c2of12.tour p").unwrap()
+    }
+
+    fn get_departure_selector() -> Selector {
+        Selector::parse("li[data-filter][data-departure-id][data-departure-time]").unwrap()
+    }
+
+    fn get_late_selector() -> Selector {
+        Selector::parse("span.late").unwrap()
+    }
+}

src/main.rs

@@ -1,7 +1,10 @@
-use anyhow::{anyhow, Result};
+mod extractor;
 
+use anyhow::{anyhow, Result};
 use scraper::{Html, Selector};
 
+use extractor::Extractor;
+
 const SIEDLUNG: &str =
     "https://www.vvo-online.de/de/fahrplan/aktuelle-abfahrten-ankuenfte/abfahrten?stopid=33006764";
 
@@ -9,17 +12,15 @@ fn main() -> Result<()> {
     let message = query_server()?;
     let html = Html::parse_document(&message);
 
-    let departure_selector = get_departure_selector();
-    let time_selector = get_time_selector();
-    let late_selector = get_late_selector();
+    let extractor = Extractor::new();
 
-    for departure_block in html.select(&departure_selector) {
+    for departure_block in html.select(&extractor.departure) {
         let val = departure_block.value();
         println!("{}", val.attr("data-filter").unwrap().trim());
 
-        let late = extract_delay(departure_block, &late_selector);
+        let late = extract_delay(departure_block, &extractor.delay);
         for time_block in departure_block
-            .select(&time_selector)
+            .select(&extractor.time)
             .next()
             .unwrap()
             .children()
@@ -42,10 +43,6 @@ fn main() -> Result<()> {
     Ok(())
 }
 
-fn get_late_selector() -> Selector {
-    Selector::parse("span.late").unwrap()
-}
-
 fn query_server() -> Result<String> {
     match ureq::get(SIEDLUNG).call() {
         Ok(response) => Ok(response.into_string().map_err(|e| anyhow!(e))?),
@@ -59,11 +56,3 @@ fn extract_delay(departure_block: scraper::ElementRef, late_selector: &Selector)
         .next()
         .map(|content| content.inner_html())
 }
-
-fn get_time_selector() -> Selector {
-    Selector::parse("div.col.c2of12.tour p").unwrap()
-}
-
-fn get_departure_selector() -> Selector {
-    Selector::parse("li[data-filter][data-departure-id][data-departure-time]").unwrap()
-}