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// Copyright 2022 IOTA Stiftung
// SPDX-License-Identifier: Apache-2.0
use primitive_types::U256;
use crate::{
client::secret::SecretManage,
types::block::{
address::Bech32Address,
output::{unlock_condition::UnlockCondition, FoundryId, NativeTokensBuilder, Output, Rent},
ConvertTo,
},
wallet::{
account::{
operations::helpers::time::can_output_be_unlocked_forever_from_now_on,
types::{AddressWithUnspentOutputs, Balance, NativeTokensBalance},
Account, AccountDetails, OutputsToClaim,
},
Error, Result,
},
};
impl<S: 'static + SecretManage> Account<S>
where
Error: From<S::Error>,
{
/// Get the balance of the account.
pub async fn balance(&self) -> Result<Balance> {
log::debug!("[BALANCE] balance");
let account_details = self.details().await;
self.balance_inner(account_details.addresses_with_unspent_outputs.iter(), &account_details)
.await
}
/// Get the balance of the given addresses.
pub async fn addresses_balance(&self, addresses: Vec<impl ConvertTo<Bech32Address>>) -> Result<Balance> {
log::debug!("[BALANCE] addresses_balance");
let account_details = self.details().await;
let addresses_with_unspent_outputs = addresses
.into_iter()
.map(|address| {
let address = address.convert()?;
account_details
.addresses_with_unspent_outputs
.iter()
.find(|&a| a.address == address)
.ok_or(Error::AddressNotFoundInAccount(address))
})
.collect::<Result<Vec<&_>>>()?;
self.balance_inner(addresses_with_unspent_outputs.into_iter(), &account_details)
.await
}
async fn balance_inner(
&self,
addresses_with_unspent_outputs: impl Iterator<Item = &AddressWithUnspentOutputs> + Send,
account_details: &AccountDetails,
) -> Result<Balance> {
let network_id = self.client().get_network_id().await?;
let rent_structure = self.client().get_rent_structure().await?;
let mut balance = Balance::default();
let mut total_rent_amount = 0;
let mut total_native_tokens = NativeTokensBuilder::default();
#[cfg(feature = "participation")]
let voting_output = self.get_voting_output().await?;
for address_with_unspent_outputs in addresses_with_unspent_outputs {
#[cfg(feature = "participation")]
{
if let Some(voting_output) = &voting_output {
if voting_output.output.as_basic().address() == address_with_unspent_outputs.address.inner() {
balance.base_coin.voting_power = voting_output.output.amount();
}
}
}
for output_id in &address_with_unspent_outputs.output_ids {
if let Some(data) = account_details.unspent_outputs.get(output_id) {
// Check if output is from the network we're currently connected to
if data.network_id != network_id {
continue;
}
let output = &data.output;
let rent = output.rent_cost(&rent_structure);
// Add alias and foundry outputs here because they can't have a
// [`StorageDepositReturnUnlockCondition`] or time related unlock conditions
match output {
Output::Alias(output) => {
// Add amount
balance.base_coin.total += output.amount();
// Add storage deposit
balance.required_storage_deposit.alias += rent;
if !account_details.locked_outputs.contains(output_id) {
total_rent_amount += rent;
}
// Add native tokens
total_native_tokens.add_native_tokens(output.native_tokens().clone())?;
let alias_id = output.alias_id_non_null(output_id);
balance.aliases.push(alias_id);
}
Output::Foundry(output) => {
// Add amount
balance.base_coin.total += output.amount();
// Add storage deposit
balance.required_storage_deposit.foundry += rent;
if !account_details.locked_outputs.contains(output_id) {
total_rent_amount += rent;
}
// Add native tokens
total_native_tokens.add_native_tokens(output.native_tokens().clone())?;
balance.foundries.push(output.id());
}
_ => {
// If there is only an [AddressUnlockCondition], then we can spend the output at any time
// without restrictions
if let [UnlockCondition::Address(_)] = output
.unlock_conditions()
.expect("output needs to have unlock conditions")
.as_ref()
{
// add nft_id for nft outputs
if let Output::Nft(output) = &output {
let nft_id = output.nft_id_non_null(output_id);
balance.nfts.push(nft_id);
}
// Add amount
balance.base_coin.total += output.amount();
// Add storage deposit
if output.is_basic() {
balance.required_storage_deposit.basic += rent;
if output
.native_tokens()
.map(|native_tokens| !native_tokens.is_empty())
.unwrap_or(false)
&& !account_details.locked_outputs.contains(output_id)
{
total_rent_amount += rent;
}
} else if output.is_nft() {
balance.required_storage_deposit.nft += rent;
if !account_details.locked_outputs.contains(output_id) {
total_rent_amount += rent;
}
}
// Add native tokens
if let Some(native_tokens) = output.native_tokens() {
total_native_tokens.add_native_tokens(native_tokens.clone())?;
}
} else {
// if we have multiple unlock conditions for basic or nft outputs, then we might can't
// spend the balance at the moment or in the future
let account_addresses = self.addresses().await?;
let local_time = self.client().get_time_checked().await?;
let is_claimable =
self.claimable_outputs(OutputsToClaim::All).await?.contains(output_id);
// For outputs that are expired or have a timelock unlock condition, but no expiration
// unlock condition and we then can unlock them, then
// they can never be not available for us anymore
// and should be added to the balance
if is_claimable {
// check if output can be unlocked always from now on, in that case it should be
// added to the total amount
let output_can_be_unlocked_now_and_in_future =
can_output_be_unlocked_forever_from_now_on(
// We use the addresses with unspent outputs, because other addresses of
// the account without unspent
// outputs can't be related to this output
&account_details.addresses_with_unspent_outputs,
output,
local_time,
);
if output_can_be_unlocked_now_and_in_future {
// If output has a StorageDepositReturnUnlockCondition, the amount of it should
// be subtracted, because this part
// needs to be sent back
let amount = output
.unlock_conditions()
.and_then(|u| u.storage_deposit_return())
.map_or_else(
|| output.amount(),
|sdr| {
if account_addresses
.iter()
.any(|a| a.address.inner == *sdr.return_address())
{
// sending to ourself, we get the full amount
output.amount()
} else {
// Sending to someone else
output.amount() - sdr.amount()
}
},
);
// add nft_id for nft outputs
if let Output::Nft(output) = &output {
let nft_id = output.nft_id_non_null(output_id);
balance.nfts.push(nft_id);
}
// Add amount
balance.base_coin.total += amount;
// Add storage deposit
if output.is_basic() {
balance.required_storage_deposit.basic += rent;
// Amount for basic outputs isn't added to total_rent_amount if there aren't
// native tokens, since we can
// spend it without burning.
if output
.native_tokens()
.map(|native_tokens| !native_tokens.is_empty())
.unwrap_or(false)
&& !account_details.locked_outputs.contains(output_id)
{
total_rent_amount += rent;
}
} else if output.is_nft() {
balance.required_storage_deposit.nft += rent;
if !account_details.locked_outputs.contains(output_id) {
total_rent_amount += rent;
}
}
// Add native tokens
if let Some(native_tokens) = output.native_tokens() {
total_native_tokens.add_native_tokens(native_tokens.clone())?;
}
} else {
// only add outputs that can't be locked now and at any point in the future
balance.potentially_locked_outputs.insert(*output_id, true);
}
} else {
// Don't add expired outputs that can't ever be unlocked by us
if let Some(expiration) = output
.unlock_conditions()
.expect("output needs to have unlock conditions")
.expiration()
{
// Not expired, could get unlockable when it's expired, so we insert it
if local_time < expiration.timestamp() {
balance.potentially_locked_outputs.insert(*output_id, false);
}
} else {
balance.potentially_locked_outputs.insert(*output_id, false);
}
}
}
}
}
}
}
}
self.finish(
balance,
account_details,
network_id,
total_rent_amount,
total_native_tokens,
)
}
fn finish(
&self,
mut balance: Balance,
account_details: &AccountDetails,
network_id: u64,
total_rent_amount: u64,
total_native_tokens: NativeTokensBuilder,
) -> Result<Balance> {
// for `available` get locked_outputs, sum outputs amount and subtract from total_amount
log::debug!("[BALANCE] locked outputs: {:#?}", account_details.locked_outputs);
let mut locked_amount = 0;
let mut locked_native_tokens = NativeTokensBuilder::default();
for locked_output in &account_details.locked_outputs {
// Skip potentially_locked_outputs, as their amounts aren't added to the balance
if balance.potentially_locked_outputs.contains_key(locked_output) {
continue;
}
if let Some(output_data) = account_details.unspent_outputs.get(locked_output) {
// Only check outputs that are in this network
if output_data.network_id == network_id {
locked_amount += output_data.output.amount();
if let Some(native_tokens) = output_data.output.native_tokens() {
locked_native_tokens.add_native_tokens(native_tokens.clone())?;
}
}
}
}
log::debug!(
"[BALANCE] total_amount: {}, locked_amount: {}, total_rent_amount: {}",
balance.base_coin.total,
locked_amount,
total_rent_amount,
);
locked_amount += total_rent_amount;
for native_token in total_native_tokens.finish_set()? {
// Check if some amount is currently locked
let locked_native_token_amount = locked_native_tokens.iter().find_map(|(id, amount)| {
if id == native_token.token_id() {
Some(amount)
} else {
None
}
});
let metadata = account_details
.native_token_foundries
.get(&FoundryId::from(*native_token.token_id()))
.and_then(|foundry| foundry.immutable_features().metadata())
.cloned();
balance.native_tokens.push(NativeTokensBalance {
token_id: *native_token.token_id(),
total: native_token.amount(),
available: native_token.amount() - *locked_native_token_amount.unwrap_or(&U256::from(0u8)),
metadata,
})
}
#[cfg(not(feature = "participation"))]
{
balance.base_coin.available = balance.base_coin.total.saturating_sub(locked_amount);
}
#[cfg(feature = "participation")]
{
balance.base_coin.available = balance
.base_coin
.total
.saturating_sub(locked_amount)
.saturating_sub(balance.base_coin.voting_power);
}
Ok(balance)
}
}