Feat: change private methods to admin methods (#676)

* fix:Include private checking method first on admin method

It turns out every private function changed into admin has  failing point where it conflicts with admin checking method.

* add comments for admin method checker

* fix: set factory_update_address_version as private

* remove unused comment

engine/src/lib.rs

@@ -377,6 +377,7 @@ mod contract {
     #[no_mangle]
     pub extern "C" fn factory_update_address_version() {
         let mut io = Runtime;
+        // The function is only set to be private, otherwise callback error will happen.
         io.assert_private_call().sdk_unwrap();
         let check_deploy: Result<(), &[u8]> = match io.promise_result_check() {
             Some(true) => Ok(()),
@@ -583,7 +584,11 @@ mod contract {
     pub extern "C" fn new_eth_connector() {
         let io = Runtime;
         // Only the owner can initialize the EthConnector
-        io.assert_private_call().sdk_unwrap();
+        let is_private = io.assert_private_call();
+        if is_private.is_err() {
+            let state = state::get_state(&io).sdk_unwrap();
+            require_owner_only(&state, &io.predecessor_account_id());
+        }
 
         let args: InitCallArgs = io.read_input_borsh().sdk_unwrap();
         let owner_id = io.current_account_id();
@@ -595,7 +600,11 @@ mod contract {
     pub extern "C" fn set_eth_connector_contract_data() {
         let mut io = Runtime;
         // Only the owner can set the EthConnector contract data
-        io.assert_private_call().sdk_unwrap();
+        let is_private = io.assert_private_call();
+        if is_private.is_err() {
+            let state = state::get_state(&io).sdk_unwrap();
+            require_owner_only(&state, &io.predecessor_account_id());
+        }
 
         let args: SetContractDataCallArgs = io.read_input_borsh().sdk_unwrap();
         connector::set_contract_data(&mut io, args).sdk_unwrap();
@@ -872,7 +881,11 @@ mod contract {
     #[no_mangle]
     pub extern "C" fn set_paused_flags() {
         let io = Runtime;
-        io.assert_private_call().sdk_unwrap();
+        let is_private = io.assert_private_call();
+        if is_private.is_err() {
+            let state = state::get_state(&io).sdk_unwrap();
+            require_owner_only(&state, &io.predecessor_account_id());
+        }
         let args: PauseEthConnectorCallArgs = io.read_input_borsh().sdk_unwrap();
         EthConnectorContract::init_instance(io)
             .sdk_unwrap()