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

use chain_crypto::Ed25519;
use chain_impl_mockchain::{
    block::{builder, Block, BlockDate, BlockVersion, Contents, Header},
    chaintypes::ConsensusVersion,
    header::HeaderBuilder,
    key::BftLeaderId,
    testing::{data::StakePool, TestGen},
};
use jormungandr_automation::testing::keys::create_new_key_pair;
use jormungandr_lib::crypto::key::SigningKey;

pub struct BlockBuilder {
    block_date: BlockDate,
    consensus_protocol: ConsensusVersion,
    contents: Option<Contents>,
    signing_key: Option<SigningKey<Ed25519>>,
    invalid_hash: bool,
    invalid_signature: bool,
    parent_block_header: Header,
    stake_pool: Option<StakePool>,
}

impl BlockBuilder {
    pub fn bft(block_date: BlockDate, parent_block_header: Header) -> Self {
        Self {
            block_date,
            consensus_protocol: ConsensusVersion::Bft,
            contents: None,
            signing_key: None,
            invalid_hash: false,
            invalid_signature: false,
            parent_block_header,
            stake_pool: None,
        }
    }

    pub fn genesis_praos(block_date: BlockDate, parent_block_header: Header) -> Self {
        Self {
            block_date,
            consensus_protocol: ConsensusVersion::GenesisPraos,
            contents: None,
            signing_key: None,
            invalid_hash: false,
            invalid_signature: false,
            parent_block_header,
            stake_pool: None,
        }
    }

    pub fn contents(self, contents: Contents) -> Self {
        Self {
            contents: Some(contents),
            ..self
        }
    }

    pub fn signing_key(self, signing_key: SigningKey<Ed25519>) -> Self {
        Self {
            signing_key: Some(signing_key),
            ..self
        }
    }

    pub fn invalid_hash(self) -> Self {
        Self {
            invalid_hash: true,
            ..self
        }
    }

    pub fn invalid_signature(self) -> Self {
        Self {
            invalid_signature: true,
            ..self
        }
    }

    pub fn stake_pool(self, stake_pool: StakePool) -> Self {
        Self {
            stake_pool: Some(stake_pool),
            ..self
        }
    }

    pub fn build(self) -> Block {
        let Self {
            block_date,
            consensus_protocol,
            contents,
            signing_key,
            invalid_hash,
            invalid_signature,
            parent_block_header,
            stake_pool,
        } = self;

        let contents = contents.unwrap_or_else(Contents::empty);

        let (mut content_hash, content_size) = contents.compute_hash_size();

        if invalid_hash {
            content_hash = TestGen::hash();
        }

        builder(BlockVersion::Ed25519Signed, contents, |_| {
            let builder =
                HeaderBuilder::new_raw(BlockVersion::Ed25519Signed, &content_hash, content_size)
                    .set_parent(
                        &parent_block_header.id(),
                        parent_block_header.chain_length().increase(),
                    )
                    .set_date(block_date);

            let header = match consensus_protocol {
                ConsensusVersion::Bft => {
                    let signing_key = signing_key
                        .unwrap_or_else(|| create_new_key_pair::<Ed25519>().signing_key());

                    let bft_builder = builder.into_bft_builder().unwrap();

                    if invalid_signature {
                        bft_builder
                            .set_consensus_data(&BftLeaderId::from(
                                signing_key.identifier().into_public_key(),
                            ))
                            .set_signature(signing_key.into_secret_key().sign_slice(&[42u8]).into())
                            .generalize()
                    } else {
                        bft_builder
                            .sign_using(&signing_key.into_secret_key())
                            .generalize()
                    }
                }
                ConsensusVersion::GenesisPraos => {
                    let stake_pool = stake_pool.unwrap_or_else(TestGen::stake_pool);

                    let gp_builder = builder
                        .into_genesis_praos_builder()
                        .unwrap()
                        .set_consensus_data(&stake_pool.id(), &TestGen::vrf_proof(&stake_pool));

                    if invalid_signature {
                        gp_builder
                            .set_signature(
                                stake_pool.kes().private_key().sign_slice(&[42_u8]).into(),
                            )
                            .generalize()
                    } else {
                        gp_builder
                            .sign_using(stake_pool.kes().private_key())
                            .generalize()
                    }
                }
            };

            Ok::<_, ()>(header)
        })
        .unwrap()
    }
}