Added new Ext to insert parachain asset mapping (#963)

## Describe your changes

## Issue ticket number and link
Added new Ext to insert parachain asset mapping.

pallets/xcm-helper/src/lib.rs

@@ -273,6 +273,7 @@ pub mod pallet {
 			Box<MultiLocation>,
 			Box<MultiAsset>,
 			polkadex_primitives::AssetId,
+			u128, // Amount
 			ExtraData,
 		),
 		/// Sibling Deposit
@@ -300,6 +301,10 @@ pub mod pallet {
 		NotAbleToHandleDestination,
 		/// Xcm sibling deposit failed
 		XcmSiblingDepositFailed(Box<MultiLocation>, Box<MultiAsset>),
+		/// Parachain asset mapped
+		ParachainAssetMapped(polkadex_primitives::AssetId, Box<AssetId>),
+		/// Parachain asset not mapped
+		ParachainAssetNotMapped,
 	}
 
 	// Errors inform users that something went wrong.
@@ -401,6 +406,22 @@ pub mod pallet {
 			Self::deposit_event(Event::<T>::XcmFeeTransferred(to, amount.saturated_into()));
 			Ok(())
 		}
+
+		#[pallet::call_index(4)]
+		#[pallet::weight(T::WeightInfo::transfer_fee(1))]
+		pub fn insert_asset(
+			origin: OriginFor<T>,
+			asset_id: polkadex_primitives::AssetId,
+			asset_multilocation: AssetId,
+		) -> DispatchResult {
+			T::AssetCreateUpdateOrigin::ensure_origin(origin)?;
+			<ParachainAssets<T>>::insert(asset_id, asset_multilocation);
+			Self::deposit_event(Event::<T>::ParachainAssetMapped(
+				asset_id,
+				Box::new(asset_multilocation),
+			));
+			Ok(())
+		}
 	}
 
 	impl<T: Config> Convert<polkadex_primitives::AssetId, Option<MultiLocation>> for Pallet<T> {
@@ -470,6 +491,7 @@ pub mod pallet {
 					Box::new(*who),
 					Box::new(what.clone()),
 					asset_id,
+					amount,
 					extra,
 				));
 			}
@@ -838,7 +860,7 @@ pub mod pallet {
 								}
 							} else {
 								log::error!(target:"xcm-helper","Withdrawal failed: Not able to handle dest");
-								Self::deposit_event(Event::<T>::NotAbleToDecodeDestination);
+								Self::deposit_event(Event::<T>::ParachainAssetNotMapped);
 								failed_withdrawal.push(withdrawal);
 							}
 						} else if Self::handle_deposit(withdrawal.clone(), destination).is_err() {

polkadex-xcm-simulator/Cargo.toml

@@ -41,6 +41,7 @@ xcm-helper = { path = "../pallets/xcm-helper" }
 thea-message-handler = { path = "../pallets/thea-message-handler" }
 thea = { path = "../pallets/thea" }
 smallvec = "1.13.1"
+hex = "0.4.3"
 
 
 

polkadex-xcm-simulator/src/lib.rs

@@ -153,7 +153,7 @@ mod tests {
 	use super::*;
 
 	use crate::parachain::{Balances, XcmHelper};
-	use codec::Encode;
+	use codec::{Decode, Encode};
 	use frame_support::traits::fungible::Mutate;
 	use frame_support::{assert_ok, weights::Weight};
 	use thea_primitives::extras::ExtraData;
@@ -633,4 +633,24 @@ mod tests {
 			)));
 		})
 	}
+
+	#[test]
+	fn test_with_thea_payload() {
+		MockNet::reset();
+		ParaA::execute_with(|| {
+			let hex = hex::decode("0400000000c9104ef90d846adb8cd6727f57c8e46d010010a5d4e800000000000000000000007003010200511f03007b9a3a0bd813c61006d94c7206137052f1cd6ce100000000").unwrap();
+			let payload: Vec<thea_primitives::types::Withdraw> =
+				Decode::decode(&mut &hex[..]).unwrap();
+			let block_no = 1;
+			let multlocation =
+				MultiLocation { parents: 1, interior: Junctions::X1(Junction::Parachain(1)) };
+			let pdex_asset_id = AssetId::Concrete(multlocation);
+			XcmHelper::insert_parachain_asset(
+				pdex_asset_id,
+				polkadex_primitives::AssetId::Polkadex,
+			);
+			XcmHelper::insert_pending_withdrawal(block_no, payload.first().unwrap().clone());
+			XcmHelper::handle_new_pending_withdrawals(block_no);
+		})
+	}
 }