Multisig

packages/account/src/account.cairo

@@ -16,10 +16,8 @@ pub mod AccountComponent {
     use openzeppelin_introspection::src5::SRC5Component::SRC5Impl;
     use openzeppelin_introspection::src5::SRC5Component;
     use starknet::account::Call;
-    use starknet::get_caller_address;
-    use starknet::get_contract_address;
-    use starknet::get_tx_info;
     use starknet::storage::{StoragePointerReadAccess, StoragePointerWriteAccess};
+    use starknet::{get_caller_address, get_contract_address, get_tx_info};
 
     #[storage]
     pub struct Storage {

packages/governance/src/lib.cairo

@@ -1,3 +1,4 @@
+pub mod multisig;
 #[cfg(test)]
 mod tests;
 

packages/governance/src/multisig.cairo

@@ -0,0 +1,2 @@
+pub mod interface;
+pub mod multisig;

packages/governance/src/multisig/interface.cairo

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts for Cairo v0.18.0 (governance/multisig/interface.cairo)
+
+use starknet::ContractAddress;
+use starknet::account::Call;
+
+pub type TransactionID = u64;
+
+#[derive(Copy, Drop, Serde)]
+pub enum TransactionStatus {
+    NotFound,
+    Submitted,
+    Confirmed,
+    Executed
+}
+
+/// Interface for a contract providing the Multisig functionality.
+#[starknet::interface]
+pub trait IMultisig<TState> {
+    fn is_confirmed(self: @TState, id: TransactionID) -> bool;
+    fn is_executed(self: @TState, id: TransactionID) -> bool;
+    fn get_transaction_status(self: @TState, id: TransactionID) -> TransactionStatus;
+    fn get_transaction_calls(self: @TState, id: TransactionID) -> Span<Call>;
+    fn get_threshold(self: @TState) -> u32;
+    fn is_signer(self: @TState, signer: ContractAddress) -> bool;
+    fn add_signers(ref self: TState, new_threshold: u32, signers_to_add: Span<ContractAddress>);
+    fn remove_signers(
+        ref self: TState, new_threshold: u32, signers_to_remove: Span<ContractAddress>
+    );
+    fn replace_signer(
+        ref self: TState, signer_to_remove: ContractAddress, signer_to_add: ContractAddress
+    );
+    fn change_threshold(ref self: TState, new_threshold: u32);
+    fn submit_transaction(
+        ref self: TState, to: ContractAddress, selector: felt252, calldata: Span<felt252>
+    ) -> TransactionID;
+    fn submit_transaction_batch(ref self: TState, calls: Span<Call>) -> TransactionID;
+    fn confirm_transaction(ref self: TState, id: TransactionID);
+    fn revoke_confirmation(ref self: TState, id: TransactionID);
+    fn execute_transaction(ref self: TState, id: TransactionID);
+}