use {
crate::{common, fund_info::FundInfo, user_info::UserInfo},
solana_farm_sdk::{
fund::{Fund, FundUserRequests},
math,
program::{account, pda},
string::ArrayString64,
token::Token,
traits::Packed,
},
solana_program::{
account_info::AccountInfo, entrypoint::ProgramResult, msg, program_error::ProgramError,
},
};
pub fn approve_deposit(fund: &Fund, accounts: &[AccountInfo], amount: u64) -> ProgramResult {
#[allow(clippy::deprecated_cfg_attr)]
#[cfg_attr(rustfmt, rustfmt_skip)]
if let [
_admin_account,
fund_metadata,
fund_info_account,
_multisig_account,
fund_authority,
_spl_token_program,
fund_token_mint,
user_account,
user_info_account,
user_requests_account,
user_deposit_token_account,
user_fund_token_account,
custody_account,
custody_fees_account,
custody_metadata,
custody_token_metadata,
oracle_account
] = accounts
{
msg!("Validate state and accounts");
let mut fund_info = FundInfo::new(fund_info_account);
if fund_info.get_liquidation_start_time()? > 0 {
msg!("Error: Fund is in liquidation state");
return Err(ProgramError::Custom(516));
}
if fund_authority.key != &fund.fund_authority {
msg!("Error: Invalid Fund authority account");
return Err(ProgramError::Custom(517));
}
if !UserInfo::validate_account(fund, user_info_account, user_account.key) {
msg!("Error: Invalid user info account");
return Err(ProgramError::Custom(140));
}
if !account::check_token_account_owner(user_fund_token_account, user_account.key)? {
msg!("Error: Invalid Fund token account owner");
return Err(ProgramError::IllegalOwner);
}
common::check_fund_token_mint(fund, fund_token_mint)?;
let custody_token = account::unpack::<Token>(custody_token_metadata, "custody token")?;
common::check_wd_custody_accounts(
&fund.fund_program_id,
fund_metadata.key,
&custody_token,
custody_token_metadata,
user_deposit_token_account,
custody_account,
custody_fees_account,
custody_metadata,
oracle_account,
)?;
let mut user_requests = account::unpack::<FundUserRequests>(user_requests_account, "user requests")?;
common::check_user_requests_account(
fund,
&custody_token,
&user_requests,
user_account,
user_requests_account,
)?;
if user_requests.deposit_request.amount == 0 {
msg!("Error: No pending deposits found");
return Err(ProgramError::Custom(525));
}
msg!("Compute deposit amount and fees");
let user_token_balance = account::get_token_balance(user_deposit_token_account)?;
let amount_with_fee = if amount == 0 {
user_requests.deposit_request.amount
} else {
std::cmp::min(amount, user_requests.deposit_request.amount)
};
let fund_fee = fund_info.get_deposit_fee()?;
let (fee_numerator, fee_denominator) = math::get_fee_parts(fund_fee);
let deposit_fee = math::checked_as_u64(math::checked_div(
math::checked_mul(amount_with_fee as u128, fee_numerator as u128)?,
fee_denominator as u128,
)?)?;
let deposit_amount = amount_with_fee.checked_sub(deposit_fee).unwrap();
if deposit_amount == 0 || deposit_amount > user_token_balance {
msg!("Error: Insufficient user funds");
return Err(ProgramError::InsufficientFunds);
}
msg!("Compute assets value. amount_with_fee: {}", amount_with_fee);
let deposit_value_usd = account::get_asset_value_usd(
deposit_amount,
custody_token.decimals,
custody_token.oracle_type,
oracle_account,
fund_info.get_assets_max_price_error()?,
fund_info.get_assets_max_price_age_sec()?,
)?;
msg!(
"Deposit tokens into custody. deposit_amount: {}, deposit_value_usd: {}",
deposit_amount,
deposit_value_usd
);
common::check_assets_limit_usd(&fund_info, deposit_value_usd)?;
common::check_assets_update_time(
fund_info.get_assets_update_time()?,
fund_info.get_assets_max_update_age_sec()?,
)?;
let seeds: &[&[&[u8]]] = &[&[
b"fund_authority",
fund.name.as_bytes(),
&[fund.authority_bump],
]];
pda::transfer_tokens_with_seeds(
user_deposit_token_account,
custody_account,
fund_authority,
seeds,
deposit_amount,
)?;
if deposit_fee > 0 {
pda::transfer_tokens_with_seeds(
user_deposit_token_account,
custody_fees_account,
fund_authority,
seeds,
deposit_fee,
)?;
}
let current_assets_usd = fund_info.get_current_assets_usd()?;
let ft_supply_amount = common::get_fund_token_supply(fund_token_mint, &fund_info)?;
let ft_to_mint = common::get_fund_token_to_mint_amount(
current_assets_usd,
deposit_amount,
deposit_value_usd,
ft_supply_amount,
)?;
msg!(
"Mint Fund tokens to the user. ft_to_mint: {}, ft_supply_amount: {}, current_assets_usd: {}",
ft_to_mint, ft_supply_amount,
current_assets_usd
);
if ft_to_mint == 0 {
msg!("Error: Deposit instruction didn't result in Fund tokens mint");
return Err(ProgramError::Custom(170));
}
if fund_info.get_issue_virtual_tokens()? {
let mut user_info = UserInfo::new(user_info_account);
user_info.set_virtual_tokens_balance(math::checked_add(
user_info.get_virtual_tokens_balance()?,
ft_to_mint,
)?)?;
fund_info.set_virtual_tokens_supply(math::checked_add(
fund_info.get_virtual_tokens_supply()?,
ft_to_mint,
)?)?;
} else {
pda::mint_to_with_seeds(
user_fund_token_account,
fund_token_mint,
fund_authority,
seeds,
ft_to_mint,
)?;
}
msg!("Update Fund stats");
fund_info
.set_amount_invested_usd(fund_info.get_amount_invested_usd()? + deposit_value_usd)?;
fund_info.set_current_assets_usd(current_assets_usd + deposit_value_usd)?;
msg!("Update user stats");
user_requests.last_deposit.time = user_requests.deposit_request.time;
user_requests.last_deposit.amount = amount_with_fee;
user_requests.deposit_request.time = 0;
user_requests.deposit_request.amount = 0;
user_requests.deny_reason = ArrayString64::default();
user_requests.pack(*user_requests_account.try_borrow_mut_data()?)?;
Ok(())
} else {
Err(ProgramError::NotEnoughAccountKeys)
}
}