Fix and simplify month in airdrop messages

backend/canisters/airdrop_bot/impl/Cargo.toml

@@ -36,7 +36,6 @@ serde_json = { workspace = true }
 serializer = { path = "../../../libraries/serializer" }
 stable_memory = { path = "../../../libraries/stable_memory" }
 testing = { path = "../../../libraries/testing" }
-time = { workspace = true, features = ["macros", "formatting"] }
 tracing = { workspace = true }
 types = { path = "../../../libraries/types" }
 user_canister_c2c_client = { path = "../../user/c2c_client" }

backend/canisters/airdrop_bot/impl/src/jobs/process_pending_actions.rs

@@ -7,14 +7,14 @@ use icrc_ledger_types::icrc1::transfer::{TransferArg, TransferError};
 use rand::Rng;
 use std::cell::Cell;
 use std::time::Duration;
-use time::macros::format_description;
 use tracing::{error, trace};
 use types::icrc1::{self};
 use types::{
     BotMessage, CanisterId, ChannelId, CommunityId, CompletedCryptoTransaction, CryptoContent, CryptoTransaction,
     Cryptocurrency, MessageContentInitial,
 };
 use utils::consts::{MEMO_CHIT_FOR_CHAT_AIRDROP, MEMO_CHIT_FOR_CHAT_LOTTERY};
+use utils::time::{MonthKey, MONTHS};
 
 use super::execute_airdrop::start_airdrop_timer;
 
@@ -186,10 +186,9 @@ async fn handle_main_message_action(action: AirdropMessage) {
     };
 
     let Some(month) = read_state(|state| {
-        state.data.airdrops.current(state.env.now()).and_then(|c| {
-            let date = time::OffsetDateTime::from_unix_timestamp((c.start / 1000) as i64).unwrap();
-            let format = format_description!("[month repr:long]");
-            date.format(format).ok()
+        state.data.airdrops.current(state.env.now()).map(|c| {
+            let mk = MonthKey::from_timestamp(c.start).previous();
+            MONTHS[mk.month() as usize]
         })
     }) else {
         return;

backend/canisters/airdrop_bot/impl/src/lib.rs

@@ -52,7 +52,6 @@ impl RuntimeState {
             cycles_balance: self.env.cycles_balance(),
             wasm_version: WASM_VERSION.with_borrow(|v| **v),
             git_commit_id: utils::git::git_commit_id().to_string(),
-            initialized: self.data.initialized,
             canister_ids: CanisterIds {
                 user_index: self.data.user_index_canister_id,
                 local_user_index: self.data.local_user_index_canister_id,
@@ -73,7 +72,6 @@ struct Data {
     pub airdrops: Airdrops,
     pub channels_joined: HashSet<(CommunityId, ChannelId)>,
     pub pending_actions_queue: PendingActionsQueue,
-    pub initialized: bool,
     pub rng_seed: [u8; 32],
     pub test_mode: bool,
 }
@@ -95,7 +93,6 @@ impl Data {
             airdrops: Airdrops::default(),
             channels_joined: HashSet::default(),
             pending_actions_queue: PendingActionsQueue::default(),
-            initialized: false,
             rng_seed: [0; 32],
             test_mode,
         }
@@ -110,7 +107,6 @@ pub struct Metrics {
     pub cycles_balance: Cycles,
     pub wasm_version: BuildVersion,
     pub git_commit_id: String,
-    pub initialized: bool,
     pub canister_ids: CanisterIds,
     pub airdrops: AirdropsMetrics,
 }

backend/libraries/utils/src/time.rs

@@ -10,6 +10,21 @@ pub const HOUR_IN_MS: Milliseconds = MINUTE_IN_MS * 60;
 pub const DAY_IN_MS: Milliseconds = HOUR_IN_MS * 24;
 pub const WEEK_IN_MS: Milliseconds = DAY_IN_MS * 7;
 
+pub const MONTHS: [&str; 12] = [
+    "January",
+    "February",
+    "March",
+    "April",
+    "May",
+    "June",
+    "July",
+    "August",
+    "September",
+    "October",
+    "November",
+    "December",
+];
+
 pub const NANOS_PER_MILLISECOND: u64 = 1_000_000;
 
 pub fn now_millis() -> TimestampMillis {