Commit and push to stored branch name

Before this change eureka would store the branch name on setup but
wouldn't commit nor push to the branch. This commit fixes that.

src/git.rs

@@ -15,6 +15,25 @@ impl Git {
         Self { repo }
     }
 
+    pub fn checkout_branch(&self, branch_name: &str) -> Result<(), git2::Error> {
+        let repo = &self.repo;
+
+        let commit = repo
+            .head()
+            .map(|head| head.target())
+            .and_then(|oid| repo.find_commit(oid.unwrap()))?;
+
+        // Create new branch if it doesn't exist and swallow error
+        let _branch = repo.branch(branch_name, &commit, false);
+
+        let refname = format!("refs/heads/{}", branch_name);
+        let obj = repo.revparse_single(&*refname)?;
+
+        repo.checkout_tree(&obj, None)?;
+
+        repo.set_head(&*refname)
+    }
+
     pub fn add(&self) -> Result<(), git2::Error> {
         let mut index = self.repo.index()?;
 
@@ -41,13 +60,11 @@ impl Git {
         )
     }
 
-    pub fn push(&self) -> Result<(), git2::Error> {
+    pub fn push(&self, branch_name: &str) -> Result<(), git2::Error> {
         let mut remote = self.repo.find_remote("origin").unwrap();
 
         remote.connect_auth(Direction::Push, Some(self.get_callbacks()), None)?;
 
-        let branch_name = "master";
-
         let mut options = PushOptions::default();
         options.remote_callbacks(self.get_callbacks());
         remote.push(

src/lib.rs

@@ -122,13 +122,20 @@ where
 
         self.printer
             .println("Adding and committing your new idea..");
+        let branch_name = self
+            .fh
+            .config_read(Branch)
+            .unwrap_or_else(|_| panic!("Branch config is missing (should never end up here"));
+        git.checkout_branch(&*branch_name)
+            .expect("Something went wrong checking out branch");
         git.add()
             .and_then(|_| git.commit(commit_subject))
             .expect("Something went wrong adding or committing");
         self.printer.println("Added and committed!");
 
         self.printer.println("Pushing your new idea..");
-        git.push().expect("Something went wrong pushing");
+        git.push(&*branch_name)
+            .expect("Something went wrong pushing");
         self.printer.println("Pushed!");
     }