git.delta.rocks / unique-network / refs/commits / f3a64f5136ce

1888		collection: &CollectionHandle<T>,1888		collection: &CollectionHandle<T>,
1889		item_id: TokenId,1889		item_id: TokenId,
1890		owner: &T::CrossAccountId,1890		owner: &T::CrossAccountId,
1891		value: u128,
1891	) -> DispatchResult {1892	) -> DispatchResult {
1892		let collection_id = collection.id;1893		let collection_id = collection.id;
18931894
1894		let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)1895		let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)
1895			.ok_or(Error::<T>::TokenNotFound)?;1896			.ok_or(Error::<T>::TokenNotFound)?;
1896		let rft_balance = token1897		let mut rft_balance = token
1897			.owner1898			.owner
1898			.iter()1899			.iter()
1899			.find(|&i| i.owner == *owner)1900			.find(|&i| i.owner == *owner)
1900			.ok_or(Error::<T>::TokenNotFound)?;1901			.ok_or(Error::<T>::TokenNotFound)?
1902			.clone();
1901		Self::remove_token_index(collection, item_id, owner)?;1903		Self::remove_token_index(collection, item_id, owner)?;
19021904
1903		// update balance1905		// update balance
1904		let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.as_sub())1906		let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.as_sub())
1905			.checked_sub(rft_balance.fraction)1907			.checked_sub(value)
1906			.ok_or(Error::<T>::NumOverflow)?;1908			.ok_or(Error::<T>::NumOverflow)?;
1907		<Balance<T>>::insert(collection_id, rft_balance.owner.as_sub(), new_balance);1909		<Balance<T>>::insert(collection_id, rft_balance.owner.as_sub(), new_balance);
19081910
1909		// Re-create owners list with sender removed1911		rft_balance.fraction = (rft_balance.fraction)
1912			.checked_sub(value)
1913			.ok_or(Error::<T>::NumOverflow)?;
1914
1910		let index = token1915		let index = token
1911			.owner1916			.owner
1912			.iter()1917			.iter()
1913			.position(|i| i.owner == *owner)1918			.position(|i| i.owner == *owner)
1914			.expect("owned item is exists");1919			.expect("owned item is exists");
1920		if rft_balance.fraction == 0 {
1921			// Re-create owners list with sender removed
1915		token.owner.remove(index);1922			token.owner.remove(index);
1923		} else {
1924			token.owner[index] = rft_balance;
1925		}
1926
1916		let owner_count = token.owner.len();1927		let owner_count = token.owner.len();
19171928