Method init

atomic-repository/src/repository/mod.rs:240–302

Initialize a new repository at the given path. This creates the `.atomic` directory structure and initializes the database with an empty graph. # Arguments `path` - The directory to initialize as a repository # Errors Returns an error if: - A repository already exists at the path - The directory cannot be created - The database cannot be initialized

(path: P)

    /// - The directory cannot be created
    /// - The database cannot be initialized
    pub fn init<P: AsRef<Path>>(path: P) -> Result<Self, RepositoryError> {
        let root = path.as_ref().to_path_buf();
        let dot_dir = root.join(DOT_DIR);

        // Check if repository already exists
        if dot_dir.exists() {
            return Err(RepositoryError::AlreadyExists {
                path: root.display().to_string(),
            });
        }

        // Create directory structure
        std::fs::create_dir_all(&dot_dir)?;
        std::fs::create_dir_all(dot_dir.join("changes"))?;
        std::fs::create_dir_all(dot_dir.join(WORKSPACES_DIR))?;

        // Create initial config
        let config_path = dot_dir.join("config.toml");
        let initial_config = format!(
            r#"# Atomic repository configuration

[view]
default = "{}"
"#,
            DEFAULT_VIEW
        );
        std::fs::write(&config_path, initial_config)?;

        // Create working copy ID file
        let wc_id_path = dot_dir.join("working_copy_id");
        std::fs::write(&wc_id_path, "")?;

        // Initialize the pristine database (redb creates the file)
        let pristine = Arc::new(
            Pristine::open(dot_dir.join("pristine.redb"))
                .map_err(|e| RepositoryError::Database(e.to_string()))?,
        );

        // Create the default view and its workspace directory
        {
            let mut txn = pristine
                .write_txn()
                .map_err(|e| RepositoryError::Database(e.to_string()))?;
            txn.open_or_create_view(DEFAULT_VIEW)
                .map_err(|e| RepositoryError::Database(e.to_string()))?;
            txn.commit()
                .map_err(|e| RepositoryError::Database(e.to_string()))?;
        }
        ensure_workspace_dir(&dot_dir, DEFAULT_VIEW)?;

        // Initialize the change store
        let change_store = ChangeStore::new(dot_dir.join("changes"), DEFAULT_CACHE_CAPACITY)
            .map_err(|e| RepositoryError::Database(e.to_string()))?;

        Ok(Self {
            root,
            dot_dir,
            current_view: DEFAULT_VIEW.to_string(),