Added between subcommand

src/arguments.rs

@@ -79,6 +79,15 @@ pub enum SubCommand {
         #[structopt(short, long)]
         description: Option<String>,
     },
+    Between {
+        /// Time interval in which work was done
+        time: String,
+        /// Name of the project
+        project: Option<String>,
+        /// Description of the given project
+        #[structopt(short, long)]
+        description: Option<String>,
+    }
 }
 
 #[derive(StructOpt, Debug)]

src/main.rs

@@ -57,6 +57,11 @@ fn run_app(args: Args) -> Result<i32, AppError> {
             project,
             description,
         } => until(&mut log, &time, project, description),
+        SubCommand::Between {
+            time,
+            project,
+            description,
+        } => between(&mut log, &time, project, description),
         SubCommand::While {
             cmd,
             project,

src/subcommands.rs

@@ -217,6 +217,30 @@ pub fn until(
     }
 
     let interval = time::Interval::try_parse(time, &time::Search::Forward)?;
+    log.append_event_now(&Event::Start(project.clone(), description.clone()))?;
+    log.append_event(&Event::Stop(project, description), interval.end)?;
+    Ok(0)
+}
+
+/// The `between` function corresponds to the `between` command.
+///
+/// The command makes sure that user is free. If there is no work in progress the command will
+/// append a `start` event at the specified start time with `project` name and `description` and
+/// will finish by appending a `stop` event at the specified end time.
+pub fn between(
+    log: &mut LogFile,
+    time: &str,
+    project: Option<String>,
+    description: Option<String>,
+) -> Result<i32, AppError> {
+    let event = log.get_latest_event()?;
+    if is_working(&event) {
+        return Err(AppError::new(ErrorKind::User(
+            "Please stop the current work before starting new work.".to_string(),
+        )));
+    }
+
+    let interval = time::Interval::try_parse(time, &time::Search::Backward)?;
     log.append_event(
         &Event::Start(project.clone(), description.clone()),
         interval.start,
@@ -282,7 +306,3 @@ pub fn r#while(
         }
     }
 }
-
-pub fn between() {}
-
-pub fn remove() {}