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use crate::{
domain,
error::CommandError,
events::{Completed, Created, DescriptionUpdated, ReminderUpdated, Uncompleted},
TodoAggregate, TodoEvent, TodoStatus,
};
use arrayvec::ArrayVec;
use cqrs_core::AggregateCommand;
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct CreateTodo {
pub description: domain::Description,
pub reminder: Option<domain::Reminder>,
}
impl AggregateCommand<TodoAggregate> for CreateTodo {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 2]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(_) = aggregate {
return Err(CommandError::AlreadyCreated);
}
let mut events = ArrayVec::new();
events.push(TodoEvent::Created(Created {
initial_description: self.description,
}));
if let Some(reminder) = self.reminder {
events.push(TodoEvent::ReminderUpdated(ReminderUpdated {
new_reminder: Some(reminder),
}));
}
Ok(events)
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct UpdateDescription {
pub new_description: domain::Description,
}
impl AggregateCommand<TodoAggregate> for UpdateDescription {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 1]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(ref data) = aggregate {
if data.description != self.new_description {
let mut events = ArrayVec::new();
events.push(TodoEvent::DescriptionUpdated(DescriptionUpdated {
new_description: self.new_description,
}));
Ok(events)
} else {
Ok(ArrayVec::new())
}
} else {
return Err(CommandError::NotInitialized);
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct SetReminder {
pub new_reminder: domain::Reminder,
}
impl AggregateCommand<TodoAggregate> for SetReminder {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 1]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(ref data) = aggregate {
let new_reminder = Some(self.new_reminder);
if data.reminder != new_reminder {
let mut events = ArrayVec::new();
events.push(TodoEvent::ReminderUpdated(ReminderUpdated { new_reminder }));
Ok(events)
} else {
Ok(ArrayVec::new())
}
} else {
return Err(CommandError::NotInitialized);
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct CancelReminder;
impl AggregateCommand<TodoAggregate> for CancelReminder {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 1]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(ref data) = aggregate {
if data.reminder.is_some() {
let mut events = ArrayVec::new();
events.push(TodoEvent::ReminderUpdated(ReminderUpdated {
new_reminder: None,
}));
Ok(events)
} else {
Ok(ArrayVec::new())
}
} else {
return Err(CommandError::NotInitialized);
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ToggleCompletion;
impl AggregateCommand<TodoAggregate> for ToggleCompletion {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 1]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(ref data) = aggregate {
let mut events = ArrayVec::new();
match data.status {
TodoStatus::Completed => events.push(TodoEvent::Uncompleted(Uncompleted {})),
TodoStatus::NotCompleted => events.push(TodoEvent::Completed(Completed {})),
}
Ok(events)
} else {
return Err(CommandError::NotInitialized);
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MarkCompleted;
impl AggregateCommand<TodoAggregate> for MarkCompleted {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 1]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(ref data) = aggregate {
let mut events = ArrayVec::new();
if data.status == TodoStatus::NotCompleted {
events.push(TodoEvent::Completed(Completed {}))
}
Ok(events)
} else {
return Err(CommandError::NotInitialized);
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ResetCompleted;
impl AggregateCommand<TodoAggregate> for ResetCompleted {
type Error = CommandError;
type Event = TodoEvent;
type Events = ArrayVec<[Self::Event; 1]>;
fn execute_on(self, aggregate: &TodoAggregate) -> Result<Self::Events, Self::Error> {
if let TodoAggregate::Created(ref data) = aggregate {
let mut events = ArrayVec::new();
if data.status == TodoStatus::Completed {
events.push(TodoEvent::Uncompleted(Uncompleted {}))
}
Ok(events)
} else {
return Err(CommandError::NotInitialized);
}
}
}