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

// RGB Core Library: consensus layer for RGB smart contracts.
//
// SPDX-License-Identifier: Apache-2.0
//
// Written in 2019-2024 by
//     Dr Maxim Orlovsky <orlovsky@lnp-bp.org>
//
// Copyright (C) 2019-2024 LNP/BP Standards Association. All rights reserved.
// Copyright (C) 2019-2024 Dr Maxim Orlovsky. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use amplify::num::u24;
use commit_verify::ReservedBytes;
use strict_encoding::Primitive;
use strict_types::SemId;

use crate::{StateType, LIB_NAME_RGB_COMMIT};

#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Display)]
#[derive(StrictType, StrictDumb, StrictEncode, StrictDecode)]
#[strict_type(lib = LIB_NAME_RGB_COMMIT, tags = repr, into_u8, try_from_u8)]
#[cfg_attr(
    feature = "serde",
    derive(Serialize, Deserialize),
    serde(crate = "serde_crate", rename_all = "camelCase", tag = "type")
)]
#[non_exhaustive]
#[repr(u8)]
pub enum MediaType {
    #[display("*/*")]
    #[strict_type(dumb)]
    Any = 0xFF,
    // TODO: Complete MIME type implementation
}

impl MediaType {
    pub fn conforms(&self, other: &MediaType) -> bool {
        match (self, other) {
            (MediaType::Any, MediaType::Any) => true,
        }
    }
}

#[derive(Copy, Clone, PartialEq, Eq, Debug)]
#[derive(StrictType, StrictDumb, StrictEncode, StrictDecode)]
#[strict_type(lib = LIB_NAME_RGB_COMMIT, tags = order)]
#[cfg_attr(
    feature = "serde",
    derive(Serialize, Deserialize),
    serde(crate = "serde_crate", rename_all = "camelCase")
)]
pub enum OwnedStateSchema {
    #[strict_type(dumb)]
    Declarative,
    Fungible(FungibleType),
    Structured(SemId),
    Attachment(MediaType),
    // TODO: Computed state (RCP240327A) will be added here
}

impl OwnedStateSchema {
    pub fn state_type(&self) -> StateType {
        match self {
            OwnedStateSchema::Declarative => StateType::Void,
            OwnedStateSchema::Fungible(_) => StateType::Fungible,
            OwnedStateSchema::Structured(_) => StateType::Structured,
            OwnedStateSchema::Attachment(_) => StateType::Attachment,
        }
    }

    pub fn sem_id(&self) -> Option<SemId> {
        if let Self::Structured(id) = self { Some(*id) } else { None }
    }
}

/// Today we support only a single format of confidential data, because of the
/// limitations of the underlying secp256k1-zkp library: it works only with
/// u64 numbers. Nevertheless, homomorphic commitments can be created to
/// everything that has up to 256 bits and commutative arithmetics, so in the
/// future we plan to support more types. We reserve this possibility by
/// internally encoding [`ConfidentialFormat`] with the same type specification
/// details as used for [`DateFormat`]
#[derive(Copy, Clone, PartialEq, Eq, Debug, Default, Display)]
#[derive(StrictType, StrictEncode, StrictDecode)]
#[strict_type(lib = LIB_NAME_RGB_COMMIT, tags = repr, into_u8, try_from_u8)]
#[cfg_attr(
    feature = "serde",
    derive(Serialize, Deserialize),
    serde(crate = "serde_crate", rename_all = "camelCase")
)]
#[repr(u8)]
pub enum FungibleType {
    #[default]
    #[display("64bit")]
    Unsigned64Bit = Primitive::U64.into_code(),
}

#[derive(Clone, PartialEq, Eq, Hash, Debug)]
#[derive(StrictType, StrictDumb, StrictEncode, StrictDecode)]
#[strict_type(lib = LIB_NAME_RGB_COMMIT)]
#[cfg_attr(
    feature = "serde",
    derive(Serialize, Deserialize),
    serde(crate = "serde_crate", rename_all = "camelCase")
)]
pub struct GlobalStateSchema {
    // TODO: Reserved for computed state (RCP240327A): will be used as an enum tag with computed
    //       state having value 1.
    pub reserved: ReservedBytes<1>,
    pub sem_id: SemId,
    pub max_items: u24,
}

impl GlobalStateSchema {
    pub fn once(sem_id: SemId) -> Self {
        GlobalStateSchema {
            reserved: default!(),
            sem_id,
            max_items: u24::ONE,
        }
    }

    pub fn many(sem_id: SemId) -> Self {
        GlobalStateSchema {
            reserved: default!(),
            sem_id,
            max_items: u24::MAX,
        }
    }
}