Merge pull request 'Add User Control Over State Transitions' (#7) from 03/state-transitions into main

Reviewed-on: #7

src/issue.rs

@@ -1,10 +1,11 @@
+use core::fmt;
 use std::io::Write;
 use std::str::FromStr;
 
 #[cfg(feature = "log")]
 use log::debug;
 
-#[derive(Debug, PartialEq, serde::Deserialize)]
+#[derive(Clone, Debug, PartialEq, serde::Deserialize)]
 /// These are the states an issue can be in.
 pub enum State {
     New,
@@ -62,6 +63,21 @@ impl FromStr for State {
     }
 }
 
+impl fmt::Display for State {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let fmt_str = match self {
+            State::New => "new",
+            State::Backlog => "backlog",
+            State::Blocked => "blocked",
+            State::InProgress => "inprogress",
+            State::Done => "done",
+            State::WontDo => "wontdo",
+            
+        };
+        write!(f, "{fmt_str}")
+    }
+}
+
 impl Issue {
     pub fn new_from_dir(dir: &std::path::Path) -> Result<Self, IssueError> {
         let mut description: Option<String> = None;
@@ -157,6 +173,23 @@ impl Issue {
             None => self.description.as_str(),
         }
     }
+
+    pub fn set_state(&mut self, new_state: State) -> Result<(), IssueError> {
+        let mut state_filename = std::path::PathBuf::from(&self.dir);
+        state_filename.push("state");
+        let mut state_file = std::fs::File::create(&state_filename)?;
+        write!(state_file, "{}", new_state)?;
+        crate::git::git_commit_file(&state_filename)?;
+        Ok(())
+    }
+
+    pub fn read_state(&mut self) -> Result<(), IssueError> {
+        let mut state_filename = std::path::PathBuf::from(&self.dir);
+        state_filename.push("state");
+        let state_string = std::fs::read_to_string(state_filename)?;
+        self.state = State::from_str(state_string.trim())?;
+        Ok(())
+    }
 }
 
 #[cfg(test)]