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@@ -1,46 +0,0 @@
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-// Ensure we're `no_std` when compiling for Wasm.
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-#![cfg_attr(not(feature = "std"), no_std)]
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-// Internal Substrate warning (decl_event).
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-#![allow(clippy::unused_unit)]
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-
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-use frame_support::traits::Currency;
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-use frame_support::{decl_event, decl_module, decl_storage, ensure};
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-use frame_system::ensure_signed;
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-use sp_arithmetic::traits::Zero;
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-use sp_std::vec::Vec;
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-
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-pub trait Trait: frame_system::Trait + balances::Trait {
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- type Event: From<Event<Self>> + Into<<Self as frame_system::Trait>::Event>;
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-}
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-
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-pub type MemoText = Vec<u8>;
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-
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-decl_storage! {
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- trait Store for Module<T: Trait> as Memo {
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- Memo get(fn memo) : map hasher(blake2_128_concat) T::AccountId => MemoText;
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- MaxMemoLength get(fn max_memo_length) : u32 = 4096;
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- }
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-}
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-
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-decl_event! {
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- pub enum Event<T> where <T as frame_system::Trait>::AccountId {
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- MemoUpdated(AccountId, MemoText),
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- }
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-}
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-
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-decl_module! {
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- pub struct Module<T: Trait> for enum Call where origin: T::Origin {
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- fn deposit_event() = default;
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-
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- #[weight = 10_000_000] // TODO: adjust weight
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- fn update_memo(origin, memo: MemoText) {
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- let sender = ensure_signed(origin)?;
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-
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- ensure!(!<balances::Module<T>>::total_balance(&sender).is_zero(), "account must have a balance");
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- ensure!(memo.len() as u32 <= Self::max_memo_length(), "memo too long");
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-
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- <Memo<T>>::insert(&sender, memo.clone());
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- Self::deposit_event(RawEvent::MemoUpdated(sender, memo));
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- }
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- }
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-}
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Shamil Gadelshin