completed most of 05 ticket v2

Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -443,6 +443,9 @@ dependencies = [
 [[package]]
 name = "deps"
 version = "0.1.0"
+dependencies = [
+ "anyhow",
+]
 
 [[package]]
 name = "deref"
@@ -2175,6 +2178,7 @@ name = "thiserror_"
 version = "0.1.0"
 dependencies = [
  "common",
+ "thiserror",
 ]
 
 [[package]]

exercises/05_ticket_v2/01_enum/src/lib.rs

@@ -7,15 +7,18 @@
 struct Ticket {
     title: String,
     description: String,
-    status: String,
+    status: Status,
 }
 
+#[derive(Debug, PartialEq, Clone, Copy)]
 enum Status {
-    // TODO: add the missing variants
+    ToDo,
+    InProgress,
+    Done,
 }
 
 impl Ticket {
-    pub fn new(title: String, description: String, status: String) -> Ticket {
+    pub fn new(title: String, description: String, status: Status) -> Ticket {
         if title.is_empty() {
             panic!("Title cannot be empty");
         }
@@ -28,7 +31,7 @@ impl Ticket {
         if description.len() > 500 {
             panic!("Description cannot be longer than 500 bytes");
         }
-        if status != "To-Do" && status != "In Progress" && status != "Done" {
+        if status != Status::ToDo && status != Status::InProgress && status != Status::Done {
             panic!("Only `To-Do`, `In Progress`, and `Done` statuses are allowed");
         }
 
@@ -47,7 +50,7 @@ impl Ticket {
         &self.description
     }
 
-    pub fn status(&self) -> &String {
+    pub fn status(&self) -> &Status {
         &self.status
     }
 }

exercises/05_ticket_v2/02_match/src/lib.rs

@@ -9,7 +9,13 @@ enum Shape {
 impl Shape {
     // TODO: Implement the `n_sides` method using a `match`.
     pub fn n_sides(&self) -> u8 {
-        todo!()
+        match self {
+            Self::Circle => 0,
+            Self::Pentagon => 5,
+            Self::Rectangle => 4,
+            Self::Square => 4,
+            Self::Triangle => 3,
+        }
     }
 }
 

exercises/05_ticket_v2/03_variants_with_data/src/lib.rs

@@ -9,7 +9,7 @@ struct Ticket {
     status: Status,
 }
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Clone)]
 enum Status {
     ToDo,
     InProgress { assigned_to: String },
@@ -38,7 +38,11 @@ impl Ticket {
         }
     }
     pub fn assigned_to(&self) -> &str {
-        todo!()
+        match &self.status {
+            Status::InProgress { assigned_to } => assigned_to,
+            _ => panic!("Only `In-Progress` tickets can be assigned to someone"),
+        }
+        // let Status::InProgress { assigned_to } = self.status;
     }
 }
 

exercises/05_ticket_v2/04_if_let/src/lib.rs

@@ -7,8 +7,19 @@ enum Shape {
 impl Shape {
     // TODO: Implement the `radius` method using
     //  either an `if let` or a `let/else`.
+    // pub fn radius(&self) -> f64 {
+    //     if let Shape::Circle { radius } = self {
+    //         return radius.clone();
+    //     } else {
+    //         panic!("");
+    //     }
+    // }
+
     pub fn radius(&self) -> f64 {
-        todo!()
+        let Shape::Circle { radius } = self else {
+            panic!("");
+        };
+        radius.clone()
     }
 }
 

exercises/05_ticket_v2/05_nullability/src/lib.rs

@@ -36,7 +36,10 @@ impl Ticket {
         }
     }
     pub fn assigned_to(&self) -> Option<&String> {
-        todo!()
+        let Status::InProgress { assigned_to } = &self.status else {
+            return None;
+        };
+        Some(assigned_to)
     }
 }
 

exercises/05_ticket_v2/06_fallibility/src/lib.rs

@@ -16,25 +16,25 @@ enum Status {
 }
 
 impl Ticket {
-    pub fn new(title: String, description: String, status: Status) -> Ticket {
+    pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
         if title.is_empty() {
-            panic!("Title cannot be empty");
+            return Err("Title cannot be empty".to_string());
         }
         if title.len() > 50 {
-            panic!("Title cannot be longer than 50 bytes");
+            return Err("Title cannot be longer than 50 bytes".to_string());
         }
         if description.is_empty() {
-            panic!("Description cannot be empty");
+            return Err("Description cannot be empty".to_string());
         }
         if description.len() > 500 {
-            panic!("Description cannot be longer than 500 bytes");
+            return Err("Description cannot be longer than 500 bytes".to_string());
         }
 
-        Ticket {
+        Ok(Ticket {
             title,
             description,
             status,
-        }
+        })
     }
 }
 

exercises/05_ticket_v2/07_unwrap/src/lib.rs

@@ -2,7 +2,25 @@
 //   When the description is invalid, instead, it should use a default description:
 //   "Description not provided".
 fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
-    todo!()
+    let tick = Ticket::new(title.clone(), description.clone(), status.clone());
+    match tick {
+        Ok(res) => return res,
+        Err(err) => {
+            match err.as_str() {
+                "Description cannot be empty" | "Description cannot be longer than 500 bytes" => {
+                    return Ticket {
+                        title: title.clone(),
+                        description: "Description not provided".to_string(),
+                        status: status.clone(),
+                    };
+                }
+
+                _ => {
+                    panic!("{err}");
+                }
+            };
+        }
+    }
 }
 
 #[derive(Debug, PartialEq, Clone)]

exercises/05_ticket_v2/08_error_enums/src/lib.rs

@@ -1,14 +1,27 @@
 // TODO: Use two variants, one for a title error and one for a description error.
 //   Each variant should contain a string with the explanation of what went wrong exactly.
 //   You'll have to update the implementation of `Ticket::new` as well.
-enum TicketNewError {}
+enum TicketNewError {
+    TitleError { desc: String },
+    DescError { desc: String },
+}
 
 // TODO: `easy_ticket` should panic when the title is invalid, using the error message
 //   stored inside the relevant variant of the `TicketNewError` enum.
 //   When the description is invalid, instead, it should use a default description:
 //   "Description not provided".
 fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
-    todo!()
+    match Ticket::new(title.clone(), description, status.clone()) {
+        Ok(proper) => proper,
+        Err(TicketNewError::DescError { desc }) => Ticket {
+            title: title.clone(),
+            description: "Description not provided".to_string(),
+            status: status.clone(),
+        },
+        Err(TicketNewError::TitleError { desc }) => {
+            panic!("{desc}");
+        }
+    }
 }
 
 #[derive(Debug, PartialEq)]
@@ -32,16 +45,24 @@ impl Ticket {
         status: Status,
     ) -> Result<Ticket, TicketNewError> {
         if title.is_empty() {
-            return Err("Title cannot be empty".to_string());
+            return Err(TicketNewError::TitleError {
+                desc: "Title cannot be empty".to_string(),
+            });
         }
         if title.len() > 50 {
-            return Err("Title cannot be longer than 50 bytes".to_string());
+            return Err(TicketNewError::TitleError {
+                desc: "Title cannot be longer than 50 bytes".to_string(),
+            });
         }
         if description.is_empty() {
-            return Err("Description cannot be empty".to_string());
+            return Err(TicketNewError::DescError {
+                desc: "Description cannot be empty".to_string(),
+            });
         }
         if description.len() > 500 {
-            return Err("Description cannot be longer than 500 bytes".to_string());
+            return Err(TicketNewError::DescError {
+                desc: "Description cannot be longer than 500 bytes".to_string(),
+            });
         }
 
         Ok(Ticket {

exercises/05_ticket_v2/09_error_trait/src/lib.rs

@@ -3,17 +3,41 @@
 //  The docs for the `std::fmt` module are a good place to start and look for examples:
 //  https://doc.rust-lang.org/std/fmt/index.html#write
 
+use std::error::Error;
+use std::fmt::{Display, Formatter};
+
+#[derive(Debug)]
 enum TicketNewError {
     TitleError(String),
     DescriptionError(String),
 }
 
+impl Display for TicketNewError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), std::fmt::Error> {
+        match self {
+            TicketNewError::TitleError(msg) => write!(f, "{msg}"),
+            TicketNewError::DescriptionError(msg) => write!(f, "{msg}"),
+        }
+        // write!(f, "")
+    }
+}
+
+impl Error for TicketNewError {}
+
 // TODO: `easy_ticket` should panic when the title is invalid, using the error message
 //   stored inside the relevant variant of the `TicketNewError` enum.
 //   When the description is invalid, instead, it should use a default description:
 //   "Description not provided".
 fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
-    todo!()
+    match Ticket::new(title.clone(), description, status.clone()) {
+        Ok(ticket) => ticket,
+        Err(err) => match err {
+            TicketNewError::TitleError(_) => panic!("{err}"),
+            TicketNewError::DescriptionError(_) => {
+                Ticket::new(title, "Description not provided".to_string(), status).unwrap()
+            }
+        },
+    }
 }
 
 #[derive(Debug, PartialEq, Clone)]

exercises/05_ticket_v2/10_packages/src/lib.rs

@@ -0,0 +1 @@
+pub fn hello_world() {}

exercises/05_ticket_v2/11_dependencies/Cargo.toml

@@ -2,3 +2,6 @@
 name = "deps"
 version = "0.1.0"
 edition = "2021"
+
+[dependencies]
+anyhow = "*"

exercises/05_ticket_v2/12_thiserror/Cargo.toml

@@ -4,6 +4,6 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-
+thiserror = "*"
 [dev-dependencies]
 common = { path = "../../../helpers/common" }

exercises/05_ticket_v2/12_thiserror/src/lib.rs

@@ -3,10 +3,17 @@
 //   a `String` field into each variant.
 //   You'll also have to add `thiserror` as a dependency in the `Cargo.toml` file.
 
+use thiserror::Error;
+
+#[derive(thiserror::Error, Debug)]
 enum TicketNewError {
+    #[error("Title cannot be empty")]
     TitleCannotBeEmpty,
+    #[error("Title cannot be longer than 50 bytes")]
     TitleTooLong,
+    #[error("Description cannot be empty")]
     DescriptionCannotBeEmpty,
+    #[error("Description cannot be longer than 500 bytes")]
     DescriptionTooLong,
 }