Dump solution and show its path

1 files changed, 35 insertions, 10 deletions

diff --git a/src/app_state.rs b/src/app_state.rs
index 6f393bc..33d3de2 100644
--- a/src/app_state.rs
+++ b/src/app_state.rs
@@ -257,21 +257,46 @@ impl AppState {
         }
     }
 
-    pub fn done_current_exercise(&mut self, writer: &mut StdoutLock) -> Result<ExercisesProgress> {
-        let exercise = &mut self.exercises[self.current_exercise_ind];
-        if !exercise.done {
-            exercise.done = true;
-            self.n_done += 1;
+    pub fn current_solution_path(&self) -> Result<Option<String>> {
+        if DEBUG_PROFILE {
+            return Ok(None);
         }
 
-        if self.official_exercises && !DEBUG_PROFILE {
+        let current_exercise = self.current_exercise();
+
+        if self.official_exercises {
+            let dir_name = current_exercise
+                .dir
+                .context("Official exercises must be nested in the `exercises` directory")?;
+            let solution_path = format!("solutions/{dir_name}/{}.rs", current_exercise.name);
+
             EMBEDDED_FILES.write_solution_to_disk(
                 self.current_exercise_ind,
-                exercise
-                    .dir
-                    .context("Official exercises must be nested in the `exercises` directory")?,
-                exercise.name,
+                dir_name,
+                &solution_path,
             )?;
+
+            Ok(Some(solution_path))
+        } else {
+            let solution_path = if let Some(dir) = current_exercise.dir {
+                format!("solutions/{dir}/{}.rs", current_exercise.name)
+            } else {
+                format!("solutions/{}.rs", current_exercise.name)
+            };
+
+            if Path::new(&solution_path).exists() {
+                return Ok(Some(solution_path));
+            }
+
+            Ok(None)
+        }
+    }
+
+    pub fn done_current_exercise(&mut self, writer: &mut StdoutLock) -> Result<ExercisesProgress> {
+        let exercise = &mut self.exercises[self.current_exercise_ind];
+        if !exercise.done {
+            exercise.done = true;
+            self.n_done += 1;
         }
 
         let Some(ind) = self.next_pending_exercise_ind() else {