chore(ui): move date and timestamp functionality to `timeline/date_di…

…viders.rs`

`util.rs` files are… not the best thing. These types and functions were
only used by the date dividers file, so let's move them there.

crates/matrix-sdk-ui/src/timeline/date_dividers.rs

@@ -17,15 +17,41 @@
 
 use std::{fmt::Display, sync::Arc};
 
+use chrono::{Datelike, Local, TimeZone};
 use ruma::MilliSecondsSinceUnixEpoch;
 use tracing::{error, event_enabled, instrument, trace, warn, Level};
 
 use super::{
     controller::{ObservableItemsTransaction, TimelineMetadata},
-    util::timestamp_to_date,
     DateDividerMode, TimelineItem, TimelineItemKind, VirtualTimelineItem,
 };
 
+#[derive(Debug, PartialEq)]
+struct Date {
+    year: i32,
+    month: u32,
+    day: u32,
+}
+
+impl Date {
+    fn is_same_month_as(&self, date: Date) -> bool {
+        self.year == date.year && self.month == date.month
+    }
+}
+
+/// Converts a timestamp since Unix Epoch to a year, month and day.
+fn timestamp_to_date(ts: MilliSecondsSinceUnixEpoch) -> Date {
+    let datetime = Local
+        .timestamp_millis_opt(ts.0.into())
+        // Only returns `None` if date is after Dec 31, 262143 BCE.
+        .single()
+        // Fallback to the current date to avoid issues with malicious
+        // homeservers.
+        .unwrap_or_else(Local::now);
+
+    Date { year: datetime.year(), month: datetime.month(), day: datetime.day() }
+}
+
 /// Algorithm ensuring that date dividers are adjusted correctly, according to
 /// new items that have been inserted.
 pub(super) struct DateDividerAdjuster {
@@ -618,8 +644,8 @@ mod tests {
     use super::{super::controller::ObservableItems, DateDividerAdjuster};
     use crate::timeline::{
         controller::TimelineMetadata,
+        date_dividers::timestamp_to_date,
         event_item::{EventTimelineItemKind, RemoteEventTimelineItem},
-        util::timestamp_to_date,
         DateDividerMode, EventTimelineItem, TimelineItemContent, VirtualTimelineItem,
     };
 

crates/matrix-sdk-ui/src/timeline/util.rs

@@ -14,9 +14,8 @@
 
 use std::{ops::Deref, sync::Arc};
 
-use chrono::{Datelike, Local, TimeZone};
 use imbl::Vector;
-use ruma::{EventId, MilliSecondsSinceUnixEpoch};
+use ruma::EventId;
 
 #[cfg(doc)]
 use super::controller::TimelineMetadata;
@@ -124,29 +123,3 @@ pub(super) enum RelativePosition {
     /// Event B is before (older than) event A.
     Before,
 }
-
-#[derive(Debug, PartialEq)]
-pub(super) struct Date {
-    year: i32,
-    month: u32,
-    day: u32,
-}
-
-impl Date {
-    pub fn is_same_month_as(&self, date: Date) -> bool {
-        self.year == date.year && self.month == date.month
-    }
-}
-
-/// Converts a timestamp since Unix Epoch to a year, month and day.
-pub(super) fn timestamp_to_date(ts: MilliSecondsSinceUnixEpoch) -> Date {
-    let datetime = Local
-        .timestamp_millis_opt(ts.0.into())
-        // Only returns `None` if date is after Dec 31, 262143 BCE.
-        .single()
-        // Fallback to the current date to avoid issues with malicious
-        // homeservers.
-        .unwrap_or_else(Local::now);
-
-    Date { year: datetime.year(), month: datetime.month(), day: datetime.day() }
-}