1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

use crate::program::{
    dispatch_market::load_with_dispatch_mut, error::assert_with_msg, loaders::get_seat_address,
    status::SeatApprovalStatus, system_utils::create_account, AuthorizedSeatRequestContext,
    MarketHeader, ModifySeatContext, PhoenixMarketContext, RequestSeatContext, Seat,
};
use borsh::BorshDeserialize;
use sokoban::node_allocator::ZeroCopy;
use solana_program::{
    account_info::AccountInfo, entrypoint::ProgramResult, program_error::ProgramError,
    pubkey::Pubkey, rent::Rent, sysvar::Sysvar,
};
use std::mem::size_of;

/// This instruction is used to request a seat on the market by the market authority for a trader
pub(crate) fn process_request_seat_authorized<'a, 'info>(
    _program_id: &Pubkey,
    market_context: &PhoenixMarketContext<'a, 'info>,
    accounts: &'a [AccountInfo<'info>],
    _data: &[u8],
) -> ProgramResult {
    let AuthorizedSeatRequestContext {
        payer,
        trader,
        seat,
        system_program,
    } = AuthorizedSeatRequestContext::load(market_context, accounts)?;
    _create_seat(
        payer.as_ref(),
        trader.key,
        seat.as_ref(),
        market_context.market_info.key,
        system_program.as_ref(),
    )
}

/// This instruction is used to request a seat on the market for a trader (by the trader)
pub(crate) fn process_request_seat<'a, 'info>(
    _program_id: &Pubkey,
    market_context: &PhoenixMarketContext<'a, 'info>,
    accounts: &'a [AccountInfo<'info>],
    _data: &[u8],
) -> ProgramResult {
    let RequestSeatContext {
        seat,
        system_program,
        ..
    } = RequestSeatContext::load(market_context, accounts)?;
    let PhoenixMarketContext {
        market_info,
        signer: trader,
    } = market_context;
    _create_seat(
        trader.as_ref(),
        trader.key,
        seat.as_ref(),
        market_info.key,
        system_program.as_ref(),
    )
}

fn _create_seat<'a, 'info>(
    payer: &'a AccountInfo<'info>,
    trader: &'a Pubkey,
    seat: &'a AccountInfo<'info>,
    market_key: &Pubkey,
    system_program: &'a AccountInfo<'info>,
) -> ProgramResult {
    let (seat_address, bump) = get_seat_address(market_key, trader);
    assert_with_msg(
        &seat_address == seat.key,
        ProgramError::InvalidAccountData,
        "Invalid seat address",
    )?;
    let space = size_of::<Seat>();
    let seeds = vec![
        b"seat".to_vec(),
        market_key.as_ref().to_vec(),
        trader.as_ref().to_vec(),
        vec![bump],
    ];
    create_account(
        payer,
        seat,
        system_program,
        &crate::id(),
        &Rent::get()?,
        space as u64,
        seeds,
    )?;
    let mut seat_bytes = seat.try_borrow_mut_data()?;
    *Seat::load_mut_bytes(&mut seat_bytes).ok_or(ProgramError::InvalidAccountData)? =
        Seat::new_init(*market_key, *trader)?;
    Ok(())
}

/// This instruction is used to modify a seat on the market
/// The seat can be modified only by the market authority
pub(crate) fn process_change_seat_status<'a, 'info>(
    _program_id: &Pubkey,
    market_context: &PhoenixMarketContext<'a, 'info>,
    accounts: &'a [AccountInfo<'info>],
    data: &[u8],
) -> ProgramResult {
    let ModifySeatContext { seat: seat_info } = ModifySeatContext::load(market_context, accounts)?;
    let PhoenixMarketContext {
        market_info,
        signer: _,
    } = market_context;
    let new_status = SeatApprovalStatus::try_from_slice(data)?;
    let mut seat = seat_info.load_mut()?;
    let current_status = SeatApprovalStatus::from(seat.approval_status);
    if current_status == new_status {
        phoenix_log!("Seat status is unchanged");
        return Ok(());
    }
    match (current_status, new_status) {
        (SeatApprovalStatus::NotApproved, SeatApprovalStatus::Approved) => {
            seat.approval_status = SeatApprovalStatus::Approved as u64;
            // Initialize a seat for the approved trader
            let market_bytes = &mut market_info.try_borrow_mut_data()?[size_of::<MarketHeader>()..];
            let market = load_with_dispatch_mut(&market_info.size_params, market_bytes)?.inner;
            assert_with_msg(
                market.get_or_register_trader(&seat.trader).is_some(),
                ProgramError::InvalidArgument,
                "Failed to register trader",
            )?;
        }
        (SeatApprovalStatus::Approved, SeatApprovalStatus::NotApproved) => {
            seat.approval_status = SeatApprovalStatus::NotApproved as u64;
        }
        (SeatApprovalStatus::Approved, SeatApprovalStatus::Retired) => {
            seat.approval_status = SeatApprovalStatus::Retired as u64;
        }
        (SeatApprovalStatus::NotApproved, SeatApprovalStatus::Retired) => {
            seat.approval_status = SeatApprovalStatus::Retired as u64;
        }
        _ => {
            phoenix_log!(
                "Invalid seat status transition from {} to {}",
                current_status,
                new_status
            );
            return Err(ProgramError::InvalidInstructionData);
        }
    }
    Ok(())
}