feat: introduce deposits airdrop

contract/src/common/event.rs

@@ -242,7 +242,7 @@ mod test {
     #[rstest]
     fn test_contract_version(admin: AccountId) {
         let context = Context::new(admin);
-        assert_eq!(context.contract().contract_version(), "sweat_jar-4.0.7");
+        assert_eq!(context.contract().contract_version(), "sweat_jar-4.1.0");
     }
 
     #[test]
@@ -260,7 +260,7 @@ mod test {
         .to_json_event_string();
         let json = r#"EVENT_JSON:{
           "standard": "sweat_jar",
-          "version": "4.0.7",
+          "version": "4.1.0",
           "event": "claim",
           "data": [
             "someone.near",
@@ -276,7 +276,7 @@ mod test {
         let event = SweatJarEvent::from(EventKind::OldScoreWarning((111, Local(5)))).to_json_event_string();
         let json = r#"EVENT_JSON:{
           "standard": "sweat_jar",
-          "version": "4.0.7",
+          "version": "4.1.0",
           "event": "old_score_warning",
           "data": [ 111, 5 ]
         }"#;

contract/src/feature/account/verification/model.rs

@@ -1,7 +1,7 @@
 use near_sdk::{env, env::panic_str, json_types::Base64VecU8, require, AccountId};
 use sweat_jar_model::{
     data::{
-        deposit::{DepositMessage, DepositTicket, Purpose},
+        deposit::{AirdropMessage, DepositMessage, DepositTicket, Purpose},
         product::ProductModelApi,
     },
     signer::MessageVerifier,
@@ -42,6 +42,33 @@ impl Contract {
             MessageVerifier::new(pk).verify(message.material(), &message.sha256(), &signature.0);
         }
     }
+
+    pub(crate) fn verify_airdrop(
+        &self,
+        ticket: &DepositTicket,
+        amount: TokenAmount,
+        receivers: &[AccountId],
+        signature: Option<&Base64VecU8>,
+    ) {
+        let product = self.get_product(&ticket.product_id);
+
+        if let Some(pk) = &product.get_public_key() {
+            let Some(signature) = signature else {
+                panic_str("Signature is required");
+            };
+            ticket.verify_expiration_date();
+
+            let message = AirdropMessage::new(
+                &env::current_account_id(),
+                &ticket.product_id,
+                amount,
+                receivers,
+                ticket.valid_until.0,
+            );
+
+            MessageVerifier::new(pk).verify(message.material(), &message.sha256(), &signature.0);
+        }
+    }
 }
 
 trait JarTicketVerifier {