initial commit

exercises/03_ticket_v1/03_modules/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "modules"
+version = "0.1.0"
+edition = "2021"
+
+[lints.rust]
+# We silence dead code warnings for the time being in order to reduce
+# compiler noise.
+# We'll re-enable them again once we explain how visibility works in Rust.
+dead_code = "allow"

exercises/03_ticket_v1/03_modules/src/lib.rs

@@ -0,0 +1,40 @@
+mod helpers {
+    // TODO: Make this code compile, either by adding a `use` statement or by using
+    //  the appropriate path to refer to the `Ticket` struct.
+
+    fn create_todo_ticket(title: String, description: String) -> Ticket {
+        Ticket::new(title, description, "To-Do".into())
+    }
+}
+
+struct Ticket {
+    title: String,
+    description: String,
+    status: String,
+}
+
+impl Ticket {
+    fn new(title: String, description: String, status: String) -> Ticket {
+        if title.is_empty() {
+            panic!("Title cannot be empty");
+        }
+        if title.len() > 50 {
+            panic!("Title cannot be longer than 50 bytes");
+        }
+        if description.is_empty() {
+            panic!("Description cannot be empty");
+        }
+        if description.len() > 500 {
+            panic!("Description cannot be longer than 500 bytes");
+        }
+        if status != "To-Do" && status != "In Progress" && status != "Done" {
+            panic!("Only `To-Do`, `In Progress`, and `Done` statuses are allowed");
+        }
+
+        Ticket {
+            title,
+            description,
+            status,
+        }
+    }
+}