Replace chrono dependency by time

src/ui/chat/tree/blocks.rs

@@ -3,7 +3,7 @@
 use std::collections::{vec_deque, VecDeque};
 use std::iter;
 
-use chrono::{DateTime, Utc};
+use time::OffsetDateTime;
 use toss::styled::Styled;
 
 use crate::macros::some_or_return;
@@ -50,7 +50,7 @@ pub enum BlockBody<I> {
 #[derive(Debug, Clone)]
 pub struct Block<I> {
     pub line: i32,
-    pub time: Option<DateTime<Utc>>,
+    pub time: Option<OffsetDateTime>,
     pub indent: usize,
     pub body: BlockBody<I>,
 }
@@ -75,7 +75,7 @@ impl<I> Block<I> {
     }
 
     pub fn msg(
-        time: DateTime<Utc>,
+        time: OffsetDateTime,
         indent: usize,
         id: I,
         nick: Styled,
@@ -92,7 +92,7 @@ impl<I> Block<I> {
         }
     }
 
-    pub fn placeholder(time: Option<DateTime<Utc>>, indent: usize, id: I) -> Self {
+    pub fn placeholder(time: Option<OffsetDateTime>, indent: usize, id: I) -> Self {
         Self {
             line: 0,
             time,

src/ui/chat/tree/render.rs

@@ -1,6 +1,6 @@
 //! Rendering blocks to a [`Frame`].
 
-use chrono::{DateTime, Utc};
+use time::OffsetDateTime;
 use toss::frame::{Frame, Pos};
 use toss::styled::Styled;
 
@@ -10,7 +10,7 @@ use super::blocks::{Block, BlockBody, MsgBlock, MsgContent};
 use super::{util, InnerTreeViewState};
 
 impl<M: Msg, S: MsgStore<M>> InnerTreeViewState<M, S> {
-    fn render_time(frame: &mut Frame, line: i32, time: Option<DateTime<Utc>>, is_cursor: bool) {
+    fn render_time(frame: &mut Frame, line: i32, time: Option<OffsetDateTime>, is_cursor: bool) {
         let pos = Pos::new(0, line);
         let style = if is_cursor {
             util::style_time_inverted()
@@ -19,7 +19,9 @@ impl<M: Msg, S: MsgStore<M>> InnerTreeViewState<M, S> {
         };
 
         if let Some(time) = time {
-            let time = format!("{}", time.format(util::TIME_FORMAT));
+            let time = time
+                .format(util::TIME_FORMAT)
+                .expect("time can be formatted");
             frame.write(pos, (&time, style));
         } else {
             frame.write(pos, (util::TIME_EMPTY, style));
@@ -51,7 +53,7 @@ impl<M: Msg, S: MsgStore<M>> InnerTreeViewState<M, S> {
     fn draw_msg_block(
         frame: &mut Frame,
         line: i32,
-        time: Option<DateTime<Utc>>,
+        time: Option<OffsetDateTime>,
         indent: usize,
         msg: &MsgBlock<M::Id>,
         is_cursor: bool,

src/ui/chat/tree/util.rs

@@ -1,10 +1,13 @@
 //! Constants and helper functions.
 
 use crossterm::style::{ContentStyle, Stylize};
+use time::format_description::FormatItem;
+use time::macros::format_description;
 use toss::frame::Frame;
 use toss::styled::Styled;
 
-pub const TIME_FORMAT: &str = "%F %R ";
+pub const TIME_FORMAT: &[FormatItem<'_>] =
+    format_description!("[year]-[month]-[day] [hour]:[minute] ");
 pub const TIME_EMPTY: &str = "                 ";
 pub const TIME_WIDTH: usize = TIME_EMPTY.len();