✨ Adding vstrk adapter (#17)

src/adapters.cairo

@@ -8,6 +8,7 @@ mod nostrav2_adapter;
 mod sithswap_adapter;
 mod starkdefi_adapter;
 mod tenkswap_adapter;
+mod vstrk_adapter;
 
 use starknet::ContractAddress;
 

src/adapters/vstrk_adapter.cairo

@@ -0,0 +1,48 @@
+use starknet::ContractAddress;
+
+#[starknet::interface]
+trait IVstrk<TContractState> {
+    fn unlock(self: @TContractState, amount: u256);
+}
+#[starknet::interface]
+trait IStrk<TContractState> {
+    fn lock_and_delegate(self: @TContractState, delegatee: ContractAddress, amount: u256);
+}
+
+#[starknet::contract]
+mod VstrkAdapter {
+    use avnu::adapters::ISwapAdapter;
+    use super::{IVstrkDispatcher, IVstrkDispatcherTrait, IStrkDispatcher, IStrkDispatcherTrait};
+    use starknet::{contract_address_const, ContractAddress};
+
+    #[storage]
+    struct Storage {}
+
+    #[external(v0)]
+    impl VstrkAdapter of ISwapAdapter<ContractState> {
+        fn swap(
+            self: @ContractState,
+            exchange_address: ContractAddress,
+            token_from_address: ContractAddress,
+            token_from_amount: u256,
+            token_to_address: ContractAddress,
+            token_to_min_amount: u256,
+            to: ContractAddress,
+            additional_swap_params: Array<felt252>,
+        ) {
+            assert(additional_swap_params.len() == 0, 'Invalid swap params');
+            let STRK_ADDRESS: ContractAddress =
+                contract_address_const::<0x04718f5a0fc34cc1af16a1cdee98ffb20c31f5cd61d6ab07201858f4287c938d>();
+            assert(
+                token_from_address == STRK_ADDRESS || token_to_address == STRK_ADDRESS,
+                'Invalid STRK address'
+            );
+            if (token_from_address == STRK_ADDRESS) {
+                IStrkDispatcher { contract_address: token_from_address }
+                    .lock_and_delegate(to, token_from_amount);
+            } else {
+                IVstrkDispatcher { contract_address: token_from_address }.unlock(token_from_amount);
+            }
+        }
+    }
+}