adapt to new layout of data source

src/html_parser.rs

@@ -10,7 +10,7 @@ pub fn parse_inner_node(inner_node: &str) -> String {
     }
 
     if let Some(end) = end {
-        let new_end = end - 1;
+        let new_end = end.saturating_sub(1);
 
         if new_end >= start_index {
             end_index = new_end

src/remaining_place.rs

@@ -8,6 +8,18 @@ pub struct RemainingPlace {
     pub free: usize,
 }
 
+impl Ord for RemainingPlace {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.id.cmp(&other.id)
+    }
+}
+
+impl PartialOrd for RemainingPlace {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        self.id.partial_cmp(&other.id)
+    }
+}
+
 pub fn get_current_places(url: &str) -> Result<Vec<RemainingPlace>, reqwest::Error> {
     let body = reqwest::blocking::get(url)?.text()?;
 
@@ -35,19 +47,47 @@ pub fn get_current_places(url: &str) -> Result<Vec<RemainingPlace>, reqwest::Err
         }
     }
 
-    lines.chunks(4).for_each(|chunk| {
+    lines.chunks(6).for_each(|chunk| {
+        let free = try_parse_free_slot(&chunk[4]);
+        let (id, description) = if let Some((id, description)) = chunk[0].split_once(' ') {
+            (id, description)
+        } else {
+            return;
+        };
+
+        if free.is_none() {
+            return;
+        }
+
         let new_remaining_place = RemainingPlace {
-            id: chunk[0].clone(),
-            description: chunk[1].clone(),
+            id: id.to_string(),
+            description: description.to_string(),
             date: chunk[2].clone(),
-            free: match chunk[3].parse() {
-                Ok(value) => value,
-                Err(_) => 0,
-            },
+            free: free.unwrap()
         };
 
         places.push(new_remaining_place);
     });
 
+    places.sort();
+
     Ok(places)
 }
+
+fn try_parse_free_slot(content: &str) -> Option<usize> {
+    if let Ok(slots) = content.parse::<usize>() {
+        return Some(slots)
+    }
+
+    if let Some((left, right)) = content.split_once(' ') {
+        if let Ok(slots) = left.parse::<usize>() {
+            return Some(slots)
+        }
+
+        if let Ok(slots) = right.parse::<usize>() {
+            return Some(slots)
+        }
+    }
+
+    None
+}