Struct TodoList 

pub struct TodoList<S> { /* private fields */ }

Facade for todo operations. Holds a store (default: in-memory).

Implementations

impl TodoList<InMemoryStore>

pub fn new() -> Self

Creates a new list with in-memory storage.

impl<S: Store> TodoList<S>

pub const fn with_store(store: S) -> Self

Builds a list with the given store (e.g. for testing or custom backends).

pub fn create(&mut self, title: impl AsRef<str>) -> Result<TodoId, TodoError>

Creates a todo with the given title. Returns its TodoId or an error if title is invalid.

Errors

Returns TodoError::InvalidInput if the title is empty or only whitespace after trim.

pub fn add_todo(&mut self, todo: &Todo) -> TodoId

Inserts an existing todo’s content with a new id (e.g. for import/merge). Returns the new TodoId.

pub fn get(&self, id: TodoId) -> Option<Todo>

Returns the todo with the given id, if it exists.

pub fn list(&self) -> Vec<Todo>

Returns all todos in creation order.

pub fn list_with_options(&self, options: &ListOptions) -> Vec<Todo>

Returns todos filtered and sorted according to options.

pub fn update_title( &mut self, id: TodoId, title: impl AsRef<str>, ) -> Result<(), TodoError>

Updates the title of the todo with the given id.

Errors

Returns TodoError::NotFound(id) if no todo with that id exists. Returns TodoError::InvalidInput if the new title is empty or only whitespace.

pub fn update(&mut self, id: TodoId, patch: TodoPatch) -> Result<(), TodoError>

Applies a partial update to the todo with the given id. Only fields set in patch are updated.

Errors

Returns TodoError::NotFound(id) if no todo with that id exists. Returns TodoError::InvalidInput if patch.title is Some and empty/whitespace.

pub fn complete(&mut self, id: TodoId, no_next: bool) -> Result<(), TodoError>

Marks the todo with the given TodoId as completed.

Errors

Returns TodoError::NotFound(id) if no todo with that id exists. Marks the todo as completed. If it has a repeat rule and no_next is false, creates the next instance.

pub fn delete(&mut self, id: TodoId) -> Result<(), TodoError>

Removes the todo with the given TodoId.

Errors

Returns TodoError::NotFound(id) if no todo with that id exists.

pub fn search(&self, keyword: &str) -> Vec<Todo>

Search todos by keyword (matches title; optionally description and tags when present).

pub fn stats(&self) -> (usize, usize, usize)

Returns counts: total, incomplete, complete.

Trait Implementations

impl Default for TodoList<InMemoryStore>

fn default() -> Self

Returns the “default value” for a type.