Show the final message

info.toml

@@ -20,7 +20,8 @@ started, here's a couple of notes about how Rustlings operates:
    and sometimes, other learners do too so you can help each other out!
 
 Got all that? Great! To get started, run `rustlings watch` in order to get the first exercise.
-Make sure to have your editor open in the `rustlings` directory!"""
+Make sure to have your editor open in the `rustlings` directory!
+"""
 
 final_message = """We hope you enjoyed learning about the various aspects of Rust!
 If you noticed any issues, please don't hesitate to report them to our repo.

src/app_state.rs

@@ -51,24 +51,29 @@ impl StateFile {
     }
 }
 
-pub struct AppState {
-    state_file: StateFile,
-    exercises: &'static [Exercise],
-    n_done: u16,
-    current_exercise: &'static Exercise,
-}
-
 #[must_use]
 pub enum ExercisesProgress {
     AllDone,
     Pending,
 }
 
+pub struct AppState {
+    state_file: StateFile,
+    exercises: &'static [Exercise],
+    n_done: u16,
+    current_exercise: &'static Exercise,
+    final_message: &'static str,
+}
+
 impl AppState {
-    pub fn new(exercises: Vec<Exercise>) -> Self {
+    pub fn new(mut exercises: Vec<Exercise>, mut final_message: String) -> Self {
-        // Leaking for sending the exercises to the debounce event handler.
+        // Leaking especially for sending the exercises to the debounce event handler.
-        // Leaking is not a problem since the exercises' slice is used until the end of the program.
+        // Leaking is not a problem because the `AppState` instance lives until
+        // the end of the program.
+        exercises.shrink_to_fit();
         let exercises = exercises.leak();
+        final_message.shrink_to_fit();
+        let final_message = final_message.leak();
 
         let state_file = StateFile::read_or_default(exercises);
         let n_done = state_file
@@ -82,6 +87,7 @@ impl AppState {
             exercises,
             n_done,
             current_exercise,
+            final_message,
         }
     }
 
@@ -210,7 +216,8 @@ impl AppState {
 
             writer.execute(Clear(ClearType::All))?;
             writer.write_all(FENISH_LINE.as_bytes())?;
-            // TODO: Show final message.
+            writer.write_all(self.final_message.as_bytes())?;
+            writer.write_all(b"\n")?;
 
             return Ok(ExercisesProgress::AllDone);
         };

src/exercise.rs

@@ -26,7 +26,6 @@ pub enum Mode {
 pub struct InfoFile {
     // TODO
     pub welcome_message: Option<String>,
-    // TODO
     pub final_message: Option<String>,
     pub exercises: Vec<Exercise>,
 }

src/main.rs

@@ -68,7 +68,7 @@ fn main() -> Result<()> {
         exit(1);
     }
 
-    let mut app_state = AppState::new(exercises);
+    let mut app_state = AppState::new(exercises, info_file.final_message.unwrap_or_default());
 
     match args.command {
         None => loop {
@@ -144,4 +144,6 @@ const FENISH_LINE: &str = "+----------------------------------------------------
          ▒▒    ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒    ▒▒
        ▒▒    ▒▒    ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒    ▒▒    ▒▒
        ▒▒  ▒▒    ▒▒                  ▒▒    ▒▒  ▒▒
-           ▒▒  ▒▒                      ▒▒  ▒▒\x1b[0m";
+           ▒▒  ▒▒                      ▒▒  ▒▒\x1b[0m
+
+";