Struct JsonStorage 

pub struct JsonStorage { /* private fields */ }

JSON file-based storage implementation

Implementations

impl JsonStorage

pub fn new() -> Result<Self>

Creates a new JsonStorage pointing to the default OS data directory.

The data directory is created automatically if it does not exist.

Errors

Returns an error if the OS data directory cannot be determined or if the directory cannot be created.

Trait Implementations

impl Storage for JsonStorage

fn load(&self) -> Result<Vec<Task>>

Loads tasks from the JSON file.

Automatically migrates tasks without UUIDs by generating and saving them.

Returns an empty list if the file does not exist yet.

fn save(&self, tasks: &[Task]) -> Result<()>

Persists tasks atomically using a write-rename strategy.

Acquires an exclusive lock on todos.json.lock before writing, ensuring concurrent processes do not corrupt the file. The lock is released automatically when the function returns.

fn location(&self) -> String

Returns a human-readable description of the storage location.