mpl-metaplex 0.1.0

use crate::{
    error::MetaplexError,
    state::{get_auction_manager, AuctionManagerStatus, Store, PREFIX},
    utils::{assert_authority_correct, assert_owned_by},
};
use mpl_auction::{
    instruction::{start_auction_instruction, StartAuctionArgs},
    processor::AuctionData,
};
use solana_program::{
    account_info::{next_account_info, AccountInfo},
    entrypoint::ProgramResult,
    program::invoke_signed,
    pubkey::Pubkey,
};

pub fn issue_start_auction<'a>(
    auction_program: AccountInfo<'a>,
    authority: AccountInfo<'a>,
    auction: AccountInfo<'a>,
    clock: AccountInfo<'a>,
    vault: Pubkey,
    signer_seeds: &[&[u8]],
) -> ProgramResult {
    invoke_signed(
        &start_auction_instruction(
            *auction_program.key,
            *authority.key,
            StartAuctionArgs { resource: vault },
        ),
        &[auction_program, authority, auction, clock],
        &[&signer_seeds],
    )?;

    Ok(())
}

pub fn process_start_auction(program_id: &Pubkey, accounts: &[AccountInfo]) -> ProgramResult {
    let account_info_iter = &mut accounts.iter();
    let auction_manager_info = next_account_info(account_info_iter)?;
    let auction_info = next_account_info(account_info_iter)?;
    let authority_info = next_account_info(account_info_iter)?;
    let store_info = next_account_info(account_info_iter)?;
    let auction_program_info = next_account_info(account_info_iter)?;
    let clock_info = next_account_info(account_info_iter)?;

    let mut auction_manager = get_auction_manager(auction_manager_info)?;
    let auction = AuctionData::from_account_info(auction_info)?;
    let store = Store::from_account_info(store_info)?;

    if auction.authority != *auction_manager_info.key {
        return Err(MetaplexError::AuctionAuthorityMismatch.into());
    }

    assert_authority_correct(&auction_manager.authority(), authority_info)?;
    assert_owned_by(auction_info, &store.auction_program)?;
    assert_owned_by(auction_manager_info, program_id)?;
    assert_owned_by(store_info, program_id)?;

    if auction_manager.store() != *store_info.key {
        return Err(MetaplexError::AuctionManagerStoreMismatch.into());
    }

    if auction_manager.auction() != *auction_info.key {
        return Err(MetaplexError::AuctionManagerAuctionMismatch.into());
    }

    if store.auction_program != *auction_program_info.key {
        return Err(MetaplexError::AuctionManagerAuctionProgramMismatch.into());
    }

    if auction_manager.status() != AuctionManagerStatus::Validated {
        return Err(MetaplexError::AuctionManagerMustBeValidated.into());
    }

    let auction_key = auction_manager.auction();
    let seeds = &[PREFIX.as_bytes(), auction_key.as_ref()];
    let (_, bump_seed) = Pubkey::find_program_address(seeds, &program_id);
    let authority_seeds = &[PREFIX.as_bytes(), auction_key.as_ref(), &[bump_seed]];

    issue_start_auction(
        auction_program_info.clone(),
        auction_manager_info.clone(),
        auction_info.clone(),
        clock_info.clone(),
        auction_manager.vault(),
        authority_seeds,
    )?;

    auction_manager.set_status(AuctionManagerStatus::Running);

    auction_manager.save(auction_manager_info)?;

    Ok(())
}