treehouse

treehouse/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "treehouse"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

treehouse/src/main.rs

@@ -0,0 +1,91 @@
+use std::io::stdin;
+
+#[derive(Debug)]
+enum VisitorAction {
+    Accept,
+    AcceptWithNote { note: String },
+    Refuse,
+    Probation,
+}
+
+#[derive(Debug)]
+struct Visitor {
+    name: String,
+    action: VisitorAction,
+    age: i8,
+}
+
+impl Visitor {
+    fn new(name: &str, action: VisitorAction, age: i8) -> Self {
+        Self {
+            name: name.to_lowercase(),
+            action,
+            age,
+        }
+    }
+
+    fn greet(&self) {
+        match &self.action {
+            VisitorAction::Accept => println!("Welcome to the treehouse !"),
+            VisitorAction::AcceptWithNote { note } => {
+                println!("Welcome to the treehouse ! {}", note);
+                if self.age < 18 {
+                    println!("No alcohol");
+                }
+            }
+            VisitorAction::Probation => println!("Probation welcome"),
+            _ => println!("Get out !!"),
+        }
+    }
+}
+
+fn main() {
+    let mut list = get_allowed_list();
+
+    loop {
+        println!("Hello, what's your name? (leave empty and press ENTER to quit)");
+
+        let name = get_name();
+
+        let known_visitor = list.iter().find(|v| v.name.to_lowercase() == *name);
+
+        match known_visitor {
+            Some(visitor) => visitor.greet(),
+            None => {
+                if name.is_empty() {
+                    break;
+                } else {
+                    println!("{} is not on the list", name);
+                    list.push(Visitor::new(&name, VisitorAction::Probation, 0));
+                }
+            }
+        }
+    }
+
+    println!("The final list:");
+    println!("{:#?}", list);
+}
+
+fn get_name() -> String {
+    let mut name = String::new();
+
+    stdin()
+        .read_line(&mut name)
+        .expect("failed to read the name");
+
+    name.trim().to_lowercase()
+}
+
+fn get_allowed_list() -> Vec<Visitor> {
+    return vec![
+        Visitor::new("Brice", VisitorAction::Accept, 24),
+        Visitor::new(
+            "Robert",
+            VisitorAction::AcceptWithNote {
+                note: String::from("Lactose-free drink in the fridge"),
+            },
+            15,
+        ),
+        Visitor::new("Michelle", VisitorAction::Refuse, 33),
+    ];
+}