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

use solana_program::{
    account_info::AccountInfo, entrypoint::ProgramResult, program::invoke_signed,
};

pub fn spl_token_burn(params: TokenBurnParams<'_, '_>) -> ProgramResult {
    let TokenBurnParams {
        mint,
        source,
        authority,
        token_program,
        amount,
        authority_signer_seeds,
    } = params;
    let mut seeds: Vec<&[&[u8]]> = vec![];
    if let Some(seed) = authority_signer_seeds {
        seeds.push(seed);
    }
    invoke_signed(
        &spl_token::instruction::burn(
            token_program.key,
            source.key,
            mint.key,
            authority.key,
            &[authority.key],
            amount,
        )?,
        &[source, mint, authority],
        seeds.as_slice(),
    )
}

/// TokenBurnParams
pub struct TokenBurnParams<'a: 'b, 'b> {
    /// mint
    pub mint: AccountInfo<'a>,
    /// source
    pub source: AccountInfo<'a>,
    /// amount
    pub amount: u64,
    /// authority
    pub authority: AccountInfo<'a>,
    /// authority_signer_seeds
    pub authority_signer_seeds: Option<&'b [&'b [u8]]>,
    /// token_program
    pub token_program: AccountInfo<'a>,
}

pub fn spl_token_close(params: TokenCloseParams<'_, '_>) -> ProgramResult {
    let TokenCloseParams {
        account,
        destination,
        owner,
        authority_signer_seeds,
        token_program,
    } = params;
    let mut seeds: Vec<&[&[u8]]> = vec![];
    if let Some(seed) = authority_signer_seeds {
        seeds.push(seed);
    }
    invoke_signed(
        &spl_token::instruction::close_account(
            token_program.key,
            account.key,
            destination.key,
            owner.key,
            &[],
        )?,
        &[account, destination, owner, token_program],
        seeds.as_slice(),
    )
}

/// TokenCloseParams
pub struct TokenCloseParams<'a: 'b, 'b> {
    /// Token account
    pub account: AccountInfo<'a>,
    /// Destination for redeemed SOL.
    pub destination: AccountInfo<'a>,
    /// Owner of the token account.
    pub owner: AccountInfo<'a>,
    /// authority_signer_seeds
    pub authority_signer_seeds: Option<&'b [&'b [u8]]>,
    /// token_program
    pub token_program: AccountInfo<'a>,
}

pub fn spl_token_mint_to(params: TokenMintToParams<'_, '_>) -> ProgramResult {
    let TokenMintToParams {
        mint,
        destination,
        authority,
        token_program,
        amount,
        authority_signer_seeds,
    } = params;
    let mut seeds: Vec<&[&[u8]]> = vec![];
    if let Some(seed) = authority_signer_seeds {
        seeds.push(seed);
    }
    invoke_signed(
        &spl_token::instruction::mint_to(
            token_program.key,
            mint.key,
            destination.key,
            authority.key,
            &[],
            amount,
        )?,
        &[mint, destination, authority, token_program],
        seeds.as_slice(),
    )
}

/// TokenMintToParams
pub struct TokenMintToParams<'a: 'b, 'b> {
    /// mint
    pub mint: AccountInfo<'a>,
    /// destination
    pub destination: AccountInfo<'a>,
    /// amount
    pub amount: u64,
    /// authority
    pub authority: AccountInfo<'a>,
    /// authority_signer_seeds
    pub authority_signer_seeds: Option<&'b [&'b [u8]]>,
    /// token_program
    pub token_program: AccountInfo<'a>,
}

pub fn spl_token_transfer(params: TokenTransferParams<'_, '_>) -> ProgramResult {
    let TokenTransferParams {
        mint: _,
        source,
        destination,
        amount,
        authority,
        token_program,
        authority_signer_seeds,
    } = params;
    let mut seeds: Vec<&[&[u8]]> = vec![];
    if let Some(seed) = authority_signer_seeds {
        seeds.push(seed);
    }
    invoke_signed(
        &spl_token::instruction::transfer(
            token_program.key,
            source.key,
            destination.key,
            authority.key,
            &[authority.key],
            amount,
        )?,
        &[source, destination, authority],
        seeds.as_slice(),
    )
}

/// TokenTransferParams
#[derive(Debug)]
pub struct TokenTransferParams<'a: 'b, 'b> {
    /// mint
    pub mint: AccountInfo<'a>,
    /// source
    pub source: AccountInfo<'a>,
    /// destination
    pub destination: AccountInfo<'a>,
    /// amount
    pub amount: u64,
    /// authority
    pub authority: AccountInfo<'a>,
    /// authority_signer_seeds
    pub authority_signer_seeds: Option<&'b [&'b [u8]]>,
    /// token_program
    pub token_program: AccountInfo<'a>,
}