Task: doc and more methods

src/task.rs

@@ -1,22 +1,59 @@
+use chrono::{Utc, DateTime};
+
 use serde::{Deserialize, Serialize};
 
-pub type TaskId = String; // This is an HTML "etag"
+// TODO: turn into this one day
+//      pub type TaskId = String; // This is an HTML "etag"
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub struct TaskId {
+    content: String,
+}
+impl TaskId{
+    pub fn new() -> Self {
+        let u = uuid::Uuid::new_v4().to_hyphenated().to_string();
+        Self { content:u }
+    }
+}
 
 /// A to-do task
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct Task {
     id: TaskId,
     name: String,
+    last_modified: DateTime<Utc>,
     completed: bool,
 }
 
 impl Task {
+    /// Create a new Task
+    pub fn new(name: String, last_modified: DateTime<Utc>) -> Self {
+        Self {
+            name, last_modified,
+            id: TaskId::new(),
+            completed: false
+        }
+    }
+
     pub fn id(&self) -> &TaskId     { &self.id          }
     pub fn name(&self) -> &str      { &self.name        }
     pub fn completed(&self) -> bool { self.completed    }
+    pub fn last_modified(&self) -> DateTime<Utc> { self.last_modified }
 
-    pub fn set_completed(&mut self) {
+    fn update_last_modified(&mut self) {
+        self.last_modified = Utc::now();
+    }
+
+    /// Rename a task.
+    /// This updates its "last modified" field
+    pub fn set_name(&mut self, new_name: String) {
+        self.update_last_modified();
+        self.name = new_name;
+    }
+
+    pub fn set_completed(&mut self, new_value: bool) {
         // TODO: either require a reference to the DataSource, so that it is aware
         //       or change a flag here, and the DataSource will be able to check the flags of all its content (but then the Calendar should only give a reference/Arc, not a clone)
+        self.update_last_modified();
+        self.completed = new_value;
     }
-}
+}