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

use serde::{Deserialize, Serialize};
use std::fmt::Display;
use thiserror::Error;

use crate::MagicId;

const MAINNET_MAGIC_ID: MagicId = 764824073;
const TESTNET_MAGIC_ID: MagicId = 1097911063;
const PREPROD_MAGIC_ID: MagicId = 1;
const PREVIEW_MAGIC_ID: MagicId = 2;
const SANCHONET_MAGIC_ID: MagicId = 4;

#[derive(Error, Debug)]
pub enum CardanoNetworkError {
    #[error("parse from code error: '{0}'")]
    ParseFromCode(String),
}

/// The Cardano Network that is being targeted
#[allow(clippy::enum_variant_names)]
#[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize, Hash, Eq, PartialOrd)]
pub enum CardanoNetwork {
    /// The Cardano mainnet network
    MainNet,

    /// A Cardano test network (testnet, preview, or preprod)
    TestNet(MagicId),

    /// A Cardano private devnet
    DevNet(MagicId),
}

impl CardanoNetwork {
    /// Instantiates a CardanoNetwork from its code and magic id
    pub fn from_code(
        network_code: String,
        network_magic: Option<u64>,
    ) -> Result<CardanoNetwork, CardanoNetworkError> {
        match network_code.to_lowercase().as_str() {
            "mainnet" => Ok(CardanoNetwork::MainNet),
            "testnet" => Ok(CardanoNetwork::TestNet(TESTNET_MAGIC_ID)),
            "preview" => Ok(CardanoNetwork::TestNet(PREVIEW_MAGIC_ID)),
            "preprod" => Ok(CardanoNetwork::TestNet(PREPROD_MAGIC_ID)),
            "sanchonet" => Ok(CardanoNetwork::TestNet(SANCHONET_MAGIC_ID)),
            "private" => {
                if let Some(magic) = network_magic {
                    Ok(CardanoNetwork::TestNet(magic))
                } else {
                    Err(CardanoNetworkError::ParseFromCode(
                        "no NETWORK MAGIC number given for test network".to_string(),
                    ))
                }
            }
            "devnet" => {
                if let Some(magic) = network_magic {
                    Ok(CardanoNetwork::DevNet(magic))
                } else {
                    Err(CardanoNetworkError::ParseFromCode(
                        "no NETWORK MAGIC number given for devnet network".to_string(),
                    ))
                }
            }
            what => Err(CardanoNetworkError::ParseFromCode(format!(
                "could not parse network '{what}', the only recognized networks are: mainnet, devnet, testnet, preview, preprod and private"
            ))),
        }
    }

    /// Returns the code (magic) of the network
    pub fn code(&self) -> MagicId {
        match *self {
            CardanoNetwork::MainNet => MAINNET_MAGIC_ID,
            CardanoNetwork::DevNet(magic_id) => magic_id,
            CardanoNetwork::TestNet(magic_id) => magic_id,
        }
    }
}

impl Display for CardanoNetwork {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match *self {
            CardanoNetwork::MainNet => write!(f, "mainnet"),
            CardanoNetwork::DevNet(_) => write!(f, "devnet"),
            CardanoNetwork::TestNet(magic_id) => match magic_id {
                TESTNET_MAGIC_ID => write!(f, "testnet"),
                PREVIEW_MAGIC_ID => write!(f, "preview"),
                PREPROD_MAGIC_ID => write!(f, "preprod"),
                SANCHONET_MAGIC_ID => write!(f, "sanchonet"),
                _ => write!(f, "private"),
            },
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_cardano_network_from_code() {
        assert_eq!(
            CardanoNetwork::from_code("mainnet".to_string(), None).unwrap(),
            CardanoNetwork::MainNet
        );
        assert_eq!(
            CardanoNetwork::from_code("mainnet".to_string(), Some(123)).unwrap(),
            CardanoNetwork::MainNet
        );
        assert_eq!(
            CardanoNetwork::from_code("preview".to_string(), None).unwrap(),
            CardanoNetwork::TestNet(PREVIEW_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("preview".to_string(), Some(123)).unwrap(),
            CardanoNetwork::TestNet(PREVIEW_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("preprod".to_string(), None).unwrap(),
            CardanoNetwork::TestNet(PREPROD_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("preprod".to_string(), Some(123)).unwrap(),
            CardanoNetwork::TestNet(PREPROD_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("sanchonet".to_string(), None).unwrap(),
            CardanoNetwork::TestNet(SANCHONET_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("sanchonet".to_string(), Some(123)).unwrap(),
            CardanoNetwork::TestNet(SANCHONET_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("testnet".to_string(), None).unwrap(),
            CardanoNetwork::TestNet(TESTNET_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("testnet".to_string(), Some(123)).unwrap(),
            CardanoNetwork::TestNet(TESTNET_MAGIC_ID)
        );
        assert_eq!(
            CardanoNetwork::from_code("private".to_string(), Some(123)).unwrap(),
            CardanoNetwork::TestNet(123)
        );
        assert!(CardanoNetwork::from_code("private".to_string(), None).is_err());
    }
}