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use borsh::BorshSerialize;
use mpl_utils::{assert_signer, create_or_allocate_account_raw};
use solana_program::{
account_info::{next_account_info, AccountInfo},
entrypoint::ProgramResult,
program_memory::sol_memcpy,
pubkey::Pubkey,
};
use super::find_escrow_seeds;
use crate::{
assertions::{assert_derivation, assert_initialized, assert_owned_by},
error::MetadataError,
state::{
EscrowAuthority, Key, Metadata, TokenMetadataAccount, TokenOwnedEscrow, TokenStandard,
},
utils::check_token_standard,
};
pub fn process_create_escrow_account(
program_id: &Pubkey,
accounts: &[AccountInfo],
) -> ProgramResult {
let account_info_iter = &mut accounts.iter();
let escrow_account_info = next_account_info(account_info_iter)?;
let metadata_account_info = next_account_info(account_info_iter)?;
let mint_account_info = next_account_info(account_info_iter)?;
let token_account_info = next_account_info(account_info_iter)?;
let edition_account_info = next_account_info(account_info_iter)?;
let payer_account_info = next_account_info(account_info_iter)?;
let system_account_info = next_account_info(account_info_iter)?;
let _sysvar_ix_account_info = next_account_info(account_info_iter)?;
let is_using_authority = account_info_iter.len() == 1;
let maybe_authority_info: Option<&AccountInfo> = if is_using_authority {
Some(next_account_info(account_info_iter)?)
} else {
None
};
assert_owned_by(metadata_account_info, program_id)?;
assert_owned_by(mint_account_info, &spl_token::id())?;
assert_owned_by(token_account_info, &spl_token::id())?;
assert_signer(payer_account_info)?;
let metadata: Metadata = Metadata::from_account_info(metadata_account_info)?;
if &metadata.mint != mint_account_info.key {
return Err(MetadataError::MintMismatch.into());
}
if check_token_standard(mint_account_info, Some(edition_account_info))?
!= TokenStandard::NonFungible
{
return Err(MetadataError::MustBeNonFungible.into());
};
let creator = maybe_authority_info.unwrap_or(payer_account_info);
let token_account: spl_token::state::Account = assert_initialized(token_account_info)?;
if token_account.mint != *mint_account_info.key {
return Err(MetadataError::MintMismatch.into());
}
if token_account.amount < 1 {
return Err(MetadataError::NotEnoughTokens.into());
}
if token_account.mint != metadata.mint {
return Err(MetadataError::MintMismatch.into());
}
let creator_type = if token_account.owner == *creator.key {
EscrowAuthority::TokenOwner
} else {
EscrowAuthority::Creator(*creator.key)
};
let escrow_seeds = find_escrow_seeds(mint_account_info.key, &creator_type);
let bump_seed = &[assert_derivation(
&crate::id(),
escrow_account_info,
&escrow_seeds,
)?];
let escrow_authority_seeds = [escrow_seeds, vec![bump_seed]].concat();
let toe = TokenOwnedEscrow {
key: Key::TokenOwnedEscrow,
base_token: *mint_account_info.key,
authority: creator_type,
bump: bump_seed[0],
};
let serialized_data = toe
.try_to_vec()
.map_err(|_| MetadataError::BorshSerializationError)?;
create_or_allocate_account_raw(
*program_id,
escrow_account_info,
system_account_info,
payer_account_info,
serialized_data.len(),
&escrow_authority_seeds,
)?;
sol_memcpy(
&mut escrow_account_info.try_borrow_mut_data()?,
&serialized_data,
serialized_data.len(),
);
Ok(())
}