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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191

mod committee;
mod explorer;
pub mod rng;
pub mod settings;
mod stake_pool;
pub mod topology;
pub mod vote;
pub mod wallet;

pub use crate::controller::Error as ControllerError;
use crate::{
    config::{
        BlockchainConfiguration, BlockchainConfigurationOrHash, CommitteeTemplate, Config,
        ExplorerTemplate, SessionSettings, VotePlanTemplate, WalletTemplate,
    },
    controller::{Controller, Error},
    utils::Dotifier,
};
pub use jormungandr_automation::jormungandr::NodeAlias;
use jormungandr_automation::{
    jormungandr::NodeConfigBuilder,
    testing::observer::{Event, Observable, Observer},
};
use jormungandr_lib::{crypto::key::SigningKey, interfaces::NodeSecret};
pub use rng::{Random, Seed};
pub use settings::{vote_plan::VotePlanSettings, wallet::Wallet, NodeSetting, Settings};
use std::{
    collections::HashMap,
    path::Path,
    rc::{Rc, Weak},
};
pub use topology::{Node, Topology};
pub use vote::VotePlanKey;

#[derive(Default)]
pub struct NetworkBuilder {
    topology: Topology,
    blockchain: BlockchainConfigurationOrHash,
    session_settings: SessionSettings,
    explorer_template: Option<ExplorerTemplate>,
    wallet_templates: Vec<WalletTemplate>,
    committee_templates: Vec<CommitteeTemplate>,
    vote_plan_templates: Vec<VotePlanTemplate>,
    observers: Vec<Weak<dyn Observer>>,
}

impl Observable for NetworkBuilder {
    fn register(mut self, observer: &Rc<dyn Observer>) -> Self {
        self.observers.push(Rc::downgrade(observer));
        self
    }

    fn notify_all(&self, event: Event) {
        for observer in &self.observers {
            if let Some(observer_listener) = observer.upgrade() {
                observer_listener.notify(event.clone());
            }
        }
    }

    fn finish_all(&self) {
        for observer in &self.observers {
            if let Some(observer_listener) = observer.upgrade() {
                observer_listener.finished();
            }
        }
    }
}

impl NetworkBuilder {
    pub fn apply_config(self, mut config: Config) -> Self {
        self.topology(config.build_topology())
            .blockchain_config_or_hash(config.build_blockchain())
            .session_settings(config.session)
            .wallet_templates(config.wallets)
            .vote_plan_templates(config.vote_plans)
            .committees(config.committees)
            .explorer(config.explorer)
    }

    pub fn topology(mut self, topology: Topology) -> Self {
        self.topology = topology;
        self
    }

    pub fn blockchain_config(mut self, config: BlockchainConfiguration) -> Self {
        self.blockchain = BlockchainConfigurationOrHash::Block0(config);
        self
    }

    pub fn wallet_templates(mut self, wallets: Vec<WalletTemplate>) -> Self {
        self.wallet_templates = wallets;
        self
    }

    pub fn wallet_template(mut self, wallet: WalletTemplate) -> Self {
        self.wallet_templates.push(wallet);
        self
    }

    pub fn vote_plan_templates(mut self, vote_plans: Vec<VotePlanTemplate>) -> Self {
        self.vote_plan_templates = vote_plans;
        self
    }

    pub fn committees(mut self, committee_templates: Vec<CommitteeTemplate>) -> Self {
        self.committee_templates = committee_templates;
        self
    }

    pub fn session_settings(mut self, session_settings: SessionSettings) -> Self {
        self.session_settings = session_settings;
        self
    }

    pub fn build(self) -> Result<Controller, ControllerError> {
        self.notify_all(Event::new("building topology..."));
        let nodes: HashMap<NodeAlias, NodeSetting> = self
            .topology
            .nodes
            .iter()
            .map(|(alias, node)| {
                let node_config = NodeConfigBuilder::default().build();
                (
                    alias.clone(),
                    NodeSetting {
                        alias: alias.clone(),
                        config: node_config,
                        secret: NodeSecret::default(),
                        topology_secret: SigningKey::generate(rand::thread_rng()),
                        node_topology: node.clone(),
                    },
                )
            })
            .collect();

        let seed = Seed::generate(rand::rngs::OsRng);
        let mut random = Random::new(seed);

        self.notify_all(Event::new("building block0.."));

        let settings = match &self.blockchain {
            BlockchainConfigurationOrHash::Block0(blockchain) => Settings::new(
                nodes,
                blockchain,
                &self.wallet_templates,
                &self.committee_templates,
                &self.explorer_template,
                &self.vote_plan_templates,
                &mut random,
            )?,
            BlockchainConfigurationOrHash::Block0Hash(_) => {
                unimplemented!("TODO: allow to start hersir based on blockhash")
            }
        };

        self.notify_all(Event::new("dumping wallet secret keys.."));

        if self.session_settings.generate_documentation {
            document(self.session_settings.root.path(), &settings)?;
        }

        self.finish_all();
        Controller::new(settings, self.session_settings.root)
    }

    pub fn explorer(mut self, explorer: Option<ExplorerTemplate>) -> Self {
        self.explorer_template = explorer;
        self
    }
    pub fn blockchain_config_or_hash(mut self, config: BlockchainConfigurationOrHash) -> Self {
        self.blockchain = config;
        self
    }
}

fn document(path: &Path, settings: &Settings) -> Result<(), Error> {
    let file = std::fs::File::create(path.join("initial_setup.dot"))?;

    let dotifier = Dotifier;
    dotifier.dottify(settings, file)?;

    for wallet in &settings.wallets {
        wallet.save_to(path)?;
    }

    let file = std::fs::File::create(path.join("genesis.yaml"))?;
    serde_yaml::to_writer(file, &settings.block0).unwrap();

    Ok(())
}