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

// Copyright 2020-2022 IOTA Stiftung
// SPDX-License-Identifier: Apache-2.0

//! Common types required by nodes and clients APIs like blocks, responses and DTOs.

#[cfg(feature = "std")]
extern crate std;

#[cfg(feature = "serde")]
pub mod api;
pub mod block;

use core::ops::Deref;

use self::block::protocol::ProtocolParameters;

/// Borrowed or Owned. Useful for generic impls and UX.
#[derive(Clone, Debug)]
pub enum Boo<'a, T> {
    Borrowed(&'a T),
    Owned(T),
}

impl<'a, T> Boo<'a, T> {
    pub fn into_owned(self) -> T
    where
        T: Clone,
    {
        match self {
            Boo::Borrowed(b) => b.clone(),
            Boo::Owned(o) => o,
        }
    }
}

impl<'a, T> AsRef<T> for Boo<'a, T> {
    fn as_ref(&self) -> &T {
        self.deref()
    }
}

impl<'a, T> Deref for Boo<'a, T> {
    type Target = T;

    fn deref(&self) -> &Self::Target {
        match *self {
            Boo::Borrowed(b) => b,
            Boo::Owned(ref o) => o,
        }
    }
}

impl<'a, T> From<T> for Boo<'a, T> {
    fn from(value: T) -> Self {
        Self::Owned(value)
    }
}

impl<'a, T> From<&'a T> for Boo<'a, T> {
    fn from(value: &'a T) -> Self {
        Self::Borrowed(value)
    }
}

impl<'a, T> From<&'a Boo<'a, T>> for Boo<'a, T> {
    fn from(value: &'a Boo<'a, T>) -> Self {
        match *value {
            Self::Borrowed(b) => Self::Borrowed(b),
            Self::Owned(ref o) => Self::Borrowed(o),
        }
    }
}

#[derive(Clone, Default, Debug)]
pub struct ValidationParams<'a> {
    protocol_parameters: Option<Boo<'a, ProtocolParameters>>,
    token_supply: Option<u64>,
}

impl<'a> ValidationParams<'a> {
    pub fn with_protocol_parameters(mut self, protocol_parameters: impl Into<Boo<'a, ProtocolParameters>>) -> Self {
        let protocol_parameters = protocol_parameters.into();
        let token_supply = protocol_parameters.token_supply();
        self.protocol_parameters.replace(protocol_parameters);
        self.with_token_supply(token_supply)
    }

    pub fn with_token_supply(mut self, token_supply: u64) -> Self {
        self.token_supply.replace(token_supply);
        self
    }

    pub fn protocol_parameters(&self) -> Option<&ProtocolParameters> {
        self.protocol_parameters.as_deref()
    }

    pub fn token_supply(&self) -> Option<u64> {
        self.token_supply
            .or_else(|| self.protocol_parameters.as_ref().map(|p| p.token_supply()))
    }
}

impl<'a> From<u64> for ValidationParams<'a> {
    fn from(value: u64) -> Self {
        Self::default().with_token_supply(value)
    }
}

impl<'a> From<ProtocolParameters> for ValidationParams<'a> {
    fn from(value: ProtocolParameters) -> Self {
        Self::default().with_protocol_parameters(value)
    }
}

impl<'a> From<&'a ProtocolParameters> for ValidationParams<'a> {
    fn from(value: &'a ProtocolParameters) -> Self {
        Self::default().with_protocol_parameters(value)
    }
}

impl<'a> From<&'a ValidationParams<'a>> for ValidationParams<'a> {
    fn from(value: &'a ValidationParams<'a>) -> Self {
        Self {
            protocol_parameters: value.protocol_parameters.as_ref().map(Into::into),
            token_supply: value.token_supply,
        }
    }
}

pub trait TryFromDto: Sized {
    type Dto;
    type Error;

    fn try_from_dto(dto: Self::Dto) -> Result<Self, Self::Error> {
        Self::try_from_dto_with_params(dto, ValidationParams::default())
    }

    fn try_from_dto_with_params<'a>(
        dto: Self::Dto,
        params: impl Into<ValidationParams<'a>> + Send,
    ) -> Result<Self, Self::Error> {
        Self::try_from_dto_with_params_inner(dto, params.into())
    }

    fn try_from_dto_with_params_inner(dto: Self::Dto, params: ValidationParams<'_>) -> Result<Self, Self::Error>;
}