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

//! This module implements the Storable trait for various types used in the indexer canister.

use candid::{Principal, CandidType, Deserialize, Encode, Decode};
use ic_stable_structures::memory_manager::VirtualMemory;
use ic_stable_structures::{
    storable::Bound, DefaultMemoryImpl, Storable,
};
use std::borrow::Cow;

pub const MAX_VALUE_SIZE: u32 = 500;
pub const MAX_KEY_SIZE: u32 = 100;

pub type Memory = VirtualMemory<DefaultMemoryImpl>;

#[derive(PartialEq, Eq, PartialOrd, Ord, Clone)]
pub struct StorablePrincipal(pub Principal);

#[derive(CandidType, Deserialize, Clone)]
pub struct Issuer {
    pub reputation_module: String,
    pub issuer_type: String,
    pub verified: bool,
    pub name: String,
    pub description: String
}

macro_rules! impl_storable {
    ($($t:ty),*) => {
        $(
            impl Storable for $t {
                fn to_bytes(&self) -> Cow<[u8]> {
                    Cow::Owned(Encode!(self).unwrap())
                }

                fn from_bytes(bytes: Cow<[u8]>) -> Self {
                    Decode!(bytes.as_ref(), Self).unwrap()
                }

                const BOUND: Bound = Bound::Bounded {
                    max_size: MAX_VALUE_SIZE,
                    is_fixed_size: false,
                };
            }
        )*
    };
}

impl Storable for StorablePrincipal {
    fn to_bytes(&self) -> std::borrow::Cow<[u8]> {
        self.0.to_bytes()
    }

    fn from_bytes(bytes: std::borrow::Cow<[u8]>) -> Self {
        Self(Principal::from_bytes(bytes))
    }

    const BOUND: Bound = Bound::Bounded {
        max_size: MAX_KEY_SIZE,
        is_fixed_size: false,
    };
}

impl_storable!(Issuer);