fix: removed chrono, added time

Cargo.toml

@@ -21,7 +21,6 @@ version = "0.1.0"
 async-trait = "0.1"
 bytes = "1.5"
 candid = "0.9"
-chrono = "0.4"
 ic-cdk = "0.11"
 ic-cdk-macros = "0.8"
 ic-cdk-timers = "0.5"
@@ -33,6 +32,7 @@ num-bigint = "0.4"
 num-traits = "0.2"
 serde = { version = "1", features = ["derive"] }
 thiserror = "1.0"
+time = "0.3.28"
 
 [profile.dev]
 debug = false

src/fly/Cargo.toml

@@ -20,7 +20,6 @@ did = []
 [dependencies]
 bytes = { workspace = true }
 candid = { workspace = true }
-chrono = { workspace = true }
 did = { path = "../did" }
 ic-cdk = { workspace = true }
 ic-cdk-macros = { workspace = true }
@@ -31,6 +30,7 @@ num-bigint = { workspace = true }
 num-traits = { workspace = true }
 serde = { workspace = true }
 thiserror = { workspace = true }
+time = { workspace = true }
 xrc = { path = "../xrc" }
 
 [dev-dependencies]

src/fly/src/app/reward.rs

@@ -4,7 +4,6 @@
 
 use std::cell::RefCell;
 
-use chrono::Datelike;
 use did::fly::{FlyError, FlyResult, PicoFly, PoolError};
 use did::ID;
 use ic_stable_structures::memory_manager::VirtualMemory;
@@ -54,9 +53,9 @@ thread_local! {
         ).unwrap()
     );
 
-    static LAST_MONTH: RefCell<StableCell<u32, VirtualMemory<DefaultMemoryImpl>>> =
+    static LAST_MONTH: RefCell<StableCell<u8, VirtualMemory<DefaultMemoryImpl>>> =
     RefCell::new(StableCell::new(MEMORY_MANAGER.with(|mm| mm.get(LAST_MONTH_MEMORY_ID)),
-        crate::utils::date().month()
+        crate::utils::date().month() as u8
     ).unwrap()
 );
 
@@ -152,7 +151,7 @@ impl Reward {
     /// Check if current month is different from the last month.
     fn should_adjust_avidity() -> bool {
         let last_month = LAST_MONTH.with_borrow(|last_month| *last_month.get());
-        let current_month = crate::utils::date().month();
+        let current_month = crate::utils::date().month() as u8;
         // check time
         current_month != last_month
     }
@@ -187,7 +186,7 @@ impl Reward {
         });
         // update last month
         LAST_MONTH.with_borrow_mut(|last_month| {
-            last_month.set(crate::utils::date().month()).unwrap();
+            last_month.set(crate::utils::date().month() as u8).unwrap();
         });
     }
 }
@@ -267,7 +266,7 @@ mod test {
 
     #[test]
     fn test_should_tell_whether_to_adjust_avidity() {
-        let month = crate::utils::date().month();
+        let month = crate::utils::date().month() as u8;
         LAST_MONTH.with_borrow_mut(|last_month| {
             last_month.set(month - 1).unwrap();
         });

src/fly/src/utils.rs

@@ -1,8 +1,6 @@
-use std::time::{Duration, UNIX_EPOCH};
-
 use candid::{Nat, Principal};
-use chrono::{DateTime, NaiveDate, Utc};
 use icrc::icrc1::account::Subaccount;
+use time::{Date, OffsetDateTime};
 
 /// Returns current time in nanoseconds
 pub fn time() -> u64 {
@@ -20,12 +18,11 @@ pub fn time() -> u64 {
 }
 
 /// Returns current date
-pub fn date() -> NaiveDate {
+pub fn date() -> Date {
     let time = time();
 
-    let duration = Duration::from_nanos(time);
-    let datetime = UNIX_EPOCH + duration;
-    DateTime::<Utc>::from(datetime).date_naive()
+    let date = OffsetDateTime::from_unix_timestamp_nanos(time as i128).unwrap();
+    date.date()
 }
 
 /// Returns canister id