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use std::collections::HashMap;
use solana_program::{account_info::AccountInfo, entrypoint::ProgramResult, pubkey::Pubkey};
use spl_token::state::Account;
use crate::{
assertions::{assert_initialized, assert_owned_by},
error::MetadataError,
pda::PREFIX,
state::{
Creator, Data, Metadata, TokenRecord, TokenState, MAX_CREATOR_LIMIT, MAX_NAME_LENGTH,
MAX_SYMBOL_LENGTH, MAX_URI_LENGTH,
},
};
pub fn assert_data_valid(
data: &Data,
update_authority: &Pubkey,
existing_metadata: &Metadata,
allow_direct_creator_writes: bool,
update_authority_is_signer: bool,
) -> ProgramResult {
if data.name.len() > MAX_NAME_LENGTH {
return Err(MetadataError::NameTooLong.into());
}
if data.symbol.len() > MAX_SYMBOL_LENGTH {
return Err(MetadataError::SymbolTooLong.into());
}
if data.uri.len() > MAX_URI_LENGTH {
return Err(MetadataError::UriTooLong.into());
}
if data.seller_fee_basis_points > 10000 {
return Err(MetadataError::InvalidBasisPoints.into());
}
if let Some(creators) = &data.creators {
if creators.len() > MAX_CREATOR_LIMIT {
return Err(MetadataError::CreatorsTooLong.into());
}
if creators.is_empty() {
return Err(MetadataError::CreatorsMustBeAtleastOne.into());
}
let new_creators_map: HashMap<&Pubkey, &Creator> =
creators.iter().map(|c| (&c.address, c)).collect();
if new_creators_map.len() != creators.len() {
return Err(MetadataError::DuplicateCreatorAddress.into());
}
let existing_creators_map: Option<HashMap<&Pubkey, &Creator>> = existing_metadata
.data
.creators
.as_ref()
.map(|existing_creators| existing_creators.iter().map(|c| (&c.address, c)).collect());
let mut share_total: u8 = 0;
for (address, creator) in &new_creators_map {
share_total = share_total
.checked_add(creator.share)
.ok_or(MetadataError::NumericalOverflowError)?;
if allow_direct_creator_writes {
continue;
}
if update_authority_is_signer && **address == *update_authority {
continue;
}
if let Some(existing_creators_map) = &existing_creators_map {
if existing_creators_map.contains_key(address) {
if creator.verified && !existing_creators_map[address].verified {
return Err(MetadataError::CannotVerifyAnotherCreator.into());
} else if !creator.verified && existing_creators_map[address].verified {
return Err(MetadataError::CannotUnverifyAnotherCreator.into());
}
} else if creator.verified {
return Err(MetadataError::CannotVerifyAnotherCreator.into());
}
} else if creator.verified {
return Err(MetadataError::CannotVerifyAnotherCreator.into());
}
}
if share_total != 100 {
return Err(MetadataError::ShareTotalMustBe100.into());
}
if allow_direct_creator_writes {
return Ok(());
} else if let Some(existing_creators_map) = &existing_creators_map {
for (address, existing_creator) in existing_creators_map {
if update_authority_is_signer && **address == *update_authority {
continue;
} else if !new_creators_map.contains_key(address) && existing_creator.verified {
return Err(MetadataError::CannotUnverifyAnotherCreator.into());
}
}
}
}
Ok(())
}
pub fn assert_update_authority_is_correct(
metadata: &Metadata,
update_authority_info: &AccountInfo,
) -> ProgramResult {
if metadata.update_authority != *update_authority_info.key {
return Err(MetadataError::UpdateAuthorityIncorrect.into());
}
if !update_authority_info.is_signer {
return Err(MetadataError::UpdateAuthorityIsNotSigner.into());
}
Ok(())
}
pub fn assert_verified_member_of_collection(
item_metadata: &Metadata,
collection_metadata: &Metadata,
) -> ProgramResult {
if let Some(ref collection) = item_metadata.collection {
if collection_metadata.mint != collection.key {
return Err(MetadataError::NotAMemberOfCollection.into());
}
if !collection.verified {
return Err(MetadataError::NotVerifiedMemberOfCollection.into());
}
} else {
return Err(MetadataError::NotAMemberOfCollection.into());
}
Ok(())
}
pub fn assert_currently_holding(
program_id: &Pubkey,
owner_info: &AccountInfo,
metadata_info: &AccountInfo,
metadata: &Metadata,
mint_info: &AccountInfo,
token_account_info: &AccountInfo,
) -> ProgramResult {
assert_holding_amount(
program_id,
owner_info,
metadata_info,
metadata,
mint_info,
token_account_info,
1,
)
}
pub fn assert_holding_amount(
program_id: &Pubkey,
owner_info: &AccountInfo,
metadata_info: &AccountInfo,
metadata: &Metadata,
mint_info: &AccountInfo,
token_account_info: &AccountInfo,
amount: u64,
) -> ProgramResult {
assert_owned_by(metadata_info, program_id)?;
assert_owned_by(mint_info, &spl_token::id())?;
let token_account: Account = assert_initialized(token_account_info)?;
assert_owned_by(token_account_info, &spl_token::id())?;
if token_account.owner != *owner_info.key {
return Err(MetadataError::InvalidOwner.into());
}
if token_account.mint != *mint_info.key {
return Err(MetadataError::MintMismatch.into());
}
if token_account.amount < amount {
return Err(MetadataError::NotEnoughTokens.into());
}
if token_account.mint != metadata.mint {
return Err(MetadataError::MintMismatch.into());
}
Ok(())
}
pub fn assert_metadata_valid(
program_id: &Pubkey,
mint_pubkey: &Pubkey,
metadata_account_info: &AccountInfo,
) -> ProgramResult {
let seeds = &[PREFIX.as_bytes(), program_id.as_ref(), mint_pubkey.as_ref()];
let (metadata_pubkey, _) = Pubkey::find_program_address(seeds, program_id);
if metadata_pubkey != *metadata_account_info.key {
return Err(MetadataError::InvalidMetadataKey.into());
}
Ok(())
}
pub fn assert_state(token_record: &TokenRecord, state: TokenState) -> ProgramResult {
match state {
TokenState::Locked => {
if !token_record.is_locked() {
return Err(MetadataError::UnlockedToken.into());
}
}
TokenState::Unlocked => {
if token_record.is_locked() {
return Err(MetadataError::LockedToken.into());
}
}
TokenState::Listed => {
if !matches!(token_record.state, TokenState::Listed) {
return Err(MetadataError::IncorrectTokenState.into());
}
}
}
Ok(())
}
pub fn assert_not_locked(token_record: &TokenRecord) -> ProgramResult {
assert_state(token_record, TokenState::Unlocked)
}