use crate::app::{actions::Action, state::AppState};
pub fn reduce(mut state: AppState, action: &Action) -> Option<AppState> {
match action {
Action::SetReflog(entries) => {
state.reflog_entries = entries.clone();
if state.reflog_selected >= state.reflog_entries.len() && !state.reflog_entries.is_empty() {
state.reflog_selected = state.reflog_entries.len() - 1;
}
}
Action::ReflogUp => {
if state.reflog_selected > 0 {
state.reflog_selected -= 1;
}
}
Action::ReflogDown => {
if !state.reflog_entries.is_empty() && state.reflog_selected < state.reflog_entries.len() - 1 {
state.reflog_selected += 1;
}
}
_ => return None,
}
Some(state)
}