cardinal-payment-manager 1.7.7

Cardinal payment manager
Documentation 
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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187

use mpl_token_metadata::utils::assert_derivation;

use {
    crate::{errors::ErrorCode, state::*},
    anchor_lang::prelude::*,
    anchor_spl::token::{self, Mint, Token, TokenAccount, Transfer},
    mpl_token_metadata::state::Metadata,
};

#[derive(Accounts)]
#[instruction(amount: u64)]
pub struct HandlePaymentWithRoyaltiesCtx<'info> {
    #[account(mut)]
    payment_manager: Box<Account<'info, PaymentManager>>,

    #[account(mut)]
    payer_token_account: Box<Account<'info, TokenAccount>>,
    #[account(mut, constraint = fee_collector_token_account.owner == payment_manager.fee_collector @ ErrorCode::InvalidFeeCollectorTokenAccount)]
    fee_collector_token_account: Box<Account<'info, TokenAccount>>,
    #[account(mut)]
    payment_token_account: Box<Account<'info, TokenAccount>>,

    payment_mint: Box<Account<'info, Mint>>,
    mint: Box<Account<'info, Mint>>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    mint_metadata: AccountInfo<'info>,

    payer: Signer<'info>,
    token_program: Program<'info, Token>,
    // > Remaining accounts for each mint creator
    // creator token account
}

pub fn handler<'key, 'accounts, 'remaining, 'info>(ctx: Context<'key, 'accounts, 'remaining, 'info, HandlePaymentWithRoyaltiesCtx<'info>>, payment_amount: u64) -> Result<()> {
    let payment_manager = &mut ctx.accounts.payment_manager;
    // maker-taker fees
    let maker_fee = payment_amount
        .checked_mul(payment_manager.maker_fee_basis_points.into())
        .expect("Multiplication error")
        .checked_div(BASIS_POINTS_DIVISOR.into())
        .expect("Division error");
    let taker_fee = payment_amount
        .checked_mul(payment_manager.taker_fee_basis_points.into())
        .expect("Multiplication error")
        .checked_div(BASIS_POINTS_DIVISOR.into())
        .expect("Division error");
    let mut total_fees = maker_fee.checked_add(taker_fee).expect("Add error");

    // assert metadata account derivation
    assert_derivation(
        &mpl_token_metadata::id(),
        &ctx.accounts.mint_metadata.to_account_info(),
        &[mpl_token_metadata::state::PREFIX.as_bytes(), mpl_token_metadata::id().as_ref(), ctx.accounts.mint.key().as_ref()],
    )?;

    // royalties
    let mut fees_paid_out: u64 = 0;
    let remaining_accs = &mut ctx.remaining_accounts.iter();
    if !ctx.accounts.mint_metadata.data_is_empty() {
        if ctx.accounts.mint_metadata.to_account_info().owner.key() != mpl_token_metadata::id() {
            return Err(error!(ErrorCode::InvalidMintMetadataOwner));
        }
        let mint_metadata_data = ctx.accounts.mint_metadata.try_borrow_mut_data().expect("Failed to borrow data");
        let mint_metadata = Metadata::deserialize(&mut mint_metadata_data.as_ref()).expect("Failed to deserialize metadata");
        if mint_metadata.mint != ctx.accounts.mint.key() {
            return Err(error!(ErrorCode::InvalidMintMetadata));
        }
        let seller_fee = if payment_manager.include_seller_fee_basis_points {
            payment_amount
                .checked_mul(mint_metadata.data.seller_fee_basis_points.into())
                .expect("Multiplication error")
                .checked_div(BASIS_POINTS_DIVISOR.into())
                .expect("Division error")
        } else {
            0
        };
        let total_creators_fee = total_fees
            .checked_mul(payment_manager.royalty_fee_share.unwrap_or(DEFAULT_ROYALTY_FEE_SHARE))
            .unwrap()
            .checked_div(BASIS_POINTS_DIVISOR.into())
            .expect("Div error")
            .checked_add(seller_fee)
            .expect("Add error");
        total_fees = total_fees.checked_add(seller_fee).expect("Add error");

        if let Some(creators) = mint_metadata.data.creators {
            let creator_amounts: Vec<u64> = creators
                .clone()
                .into_iter()
                .map(|creator| total_creators_fee.checked_mul(u64::try_from(creator.share).expect("Could not cast u8 to u64")).unwrap())
                .collect();
            let creator_amounts_sum: u64 = creator_amounts.iter().sum();
            let mut creators_fee_remainder = total_creators_fee.checked_sub(creator_amounts_sum.checked_div(100).expect("Div error")).expect("Sub error");
            for creator in creators {
                if creator.share != 0 {
                    let creator_token_account_info = next_account_info(remaining_accs)?;
                    let creator_token_account = Account::<TokenAccount>::try_from(creator_token_account_info)?;
                    if creator_token_account.owner != creator.address && creator_token_account.mint != ctx.accounts.payment_mint.key() {
                        return Err(error!(ErrorCode::InvalidTokenAccount));
                    }
                    let share = u64::try_from(creator.share).expect("Could not cast u8 to u64");
                    let creator_fee_remainder_amount = u64::from(creators_fee_remainder > 0);
                    let creator_fee_amount = total_creators_fee
                        .checked_mul(share)
                        .unwrap()
                        .checked_div(100)
                        .expect("Div error")
                        .checked_add(creator_fee_remainder_amount)
                        .expect("Add error");
                    creators_fee_remainder = creators_fee_remainder.checked_sub(creator_fee_remainder_amount).expect("Sub error");

                    if creator_fee_amount > 0 {
                        fees_paid_out = fees_paid_out.checked_add(creator_fee_amount).expect("Add error");
                        let cpi_accounts = Transfer {
                            from: ctx.accounts.payer_token_account.to_account_info(),
                            to: creator_token_account_info.to_account_info(),
                            authority: ctx.accounts.payer.to_account_info(),
                        };
                        let cpi_program = ctx.accounts.token_program.to_account_info();
                        let cpi_context = CpiContext::new(cpi_program, cpi_accounts);
                        token::transfer(cpi_context, creator_fee_amount)?;
                    }
                }
            }
        }
    }

    // calculate fees
    let buy_side_fee = payment_amount
        .checked_mul(DEFAULT_BUY_SIDE_FEE_SHARE)
        .unwrap()
        .checked_div(BASIS_POINTS_DIVISOR.into())
        .expect("Div error");
    let mut fee_collector_fee = total_fees.checked_add(buy_side_fee).expect("Add error").checked_sub(fees_paid_out).expect("Sub error");

    // pay buy side fee
    let buy_side_token_account_info = next_account_info(remaining_accs);
    if buy_side_token_account_info.is_ok() {
        let buy_side_token_account = Account::<TokenAccount>::try_from(buy_side_token_account_info?);
        if buy_side_token_account.is_ok() {
            let cpi_accounts = Transfer {
                from: ctx.accounts.payer_token_account.to_account_info(),
                to: buy_side_token_account?.to_account_info(),
                authority: ctx.accounts.payer.to_account_info(),
            };
            let cpi_program = ctx.accounts.token_program.to_account_info();
            let cpi_context = CpiContext::new(cpi_program, cpi_accounts);
            token::transfer(cpi_context, buy_side_fee)?;

            // remove buy side fee out of fee collector fee
            fee_collector_fee = fee_collector_fee.checked_sub(buy_side_fee).expect("Sub error");
        }
    }

    if fee_collector_fee > 0 {
        // pay remaining fees to fee_colector
        let cpi_accounts = Transfer {
            from: ctx.accounts.payer_token_account.to_account_info(),
            to: ctx.accounts.fee_collector_token_account.to_account_info(),
            authority: ctx.accounts.payer.to_account_info(),
        };
        let cpi_program = ctx.accounts.token_program.to_account_info();
        let cpi_context = CpiContext::new(cpi_program, cpi_accounts);
        token::transfer(cpi_context, fee_collector_fee)?;
    }

    // pay target
    let cpi_accounts = Transfer {
        from: ctx.accounts.payer_token_account.to_account_info(),
        to: ctx.accounts.payment_token_account.to_account_info(),
        authority: ctx.accounts.payer.to_account_info(),
    };
    let cpi_program = ctx.accounts.token_program.to_account_info();
    let cpi_context = CpiContext::new(cpi_program, cpi_accounts);
    token::transfer(
        cpi_context,
        payment_amount
            .checked_add(taker_fee)
            .expect("Add error")
            .checked_sub(total_fees)
            .expect("Sub error")
            .checked_sub(buy_side_fee)
            .expect("Sub error"),
    )?;

    Ok(())
}