spacejam 0.1.2

Take your protein pills and put your helmet on.
Documentation 
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

// Revolver
use super::Cowboy;
use crate::primitive::{IO, Transaction, TransactionArray, Barrel, BarrelChain};

#[derive(Clone)]
struct Wheel {
    pub pool:  IO,
    pub chain: IO,
    pub cowboy: IO
}

impl Wheel {
    pub fn new(
        pool: &'static str,
        chain: &'static str,
        cowboy: &'static str
    ) -> Self {
        let pool = IO::locate(pool);
        let chain = IO::locate(chain);
        let cowboy = IO::locate(cowboy);

        Wheel {
            pool: pool,
            chain: chain,
            cowboy: cowboy
        }
    }

    /// ErrKind: can't convert
    pub fn master(&self) -> Cowboy {
        if self.cowboy.pull().len() == 0 {
            self.cowboy.push(Cowboy::born().to_bytes());
        }
        
        Cowboy::from_bytes(self.cowboy.pull())
    }

    /// ErrKind: can't convert
    pub fn scan_pool(&self) -> TransactionArray {
        if self.pool.pull().len() == 0 {
            self.pool.push(TransactionArray::default().to_bytes())
        }
        
        TransactionArray::from_bytes(self.pool.pull())
    }

    pub fn fill_pool(&self, txs: &TransactionArray) {
            self.pool.push(txs.to_bytes())
    }

    /// ErrKind: can't convert
    pub fn scan_chain(&self) -> BarrelChain {
        if self.chain.pull().len() == 0 {
            let mut bc = BarrelChain::default();
            let mut txs = TransactionArray::default();
            
            let tx = Transaction::reward("Genesis Transaction", [0_u8; 32]);
            txs.push(tx);

            let barrel = Barrel::new("Genesis Block", txs.to_bytes(), [0_u8;32]);
            bc.push(barrel);
            
            self.chain.push(bc.to_bytes());
        }

        BarrelChain::from_bytes(self.chain.pull())
    }

    pub fn stretch_chain(&self, bc: &BarrelChain) {
        self.chain.push(bc.to_bytes())
    }
}

/// Cowboy + Revolver ~> Spaceboy
pub struct Revolver {
    wheel: Wheel,
    pub pool:  TransactionArray,
    pub chain: BarrelChain
}

impl Revolver {
    /// locate database
    ///
    /// # Example
    /// ```
    /// fn revolver() {
    ///     let revolver = Revolver::locate("test_pool", "test_chain", "test_cowboy");
    ///     
    ///     assert_eq!(revolver.pool.len(), 0);
    ///     assert_eq!(revolver.pool.to_bytes().len(), 8);
    ///     assert_eq!(revolver.pool, TransactionArray::default());
    /// 
    ///     assert_eq!(revolver.chain.len(), 1);
    ///     assert_eq!(revolver.chain.to_bytes().len(), 239);
    /// 
    ///     assert_eq!(revolver.master().to_bytes().len(), 72);
    ///     revolver.explode();
    /// }
    /// ```
    pub fn locate(p: &'static str, c: &'static str, cb: &'static str) -> Self {
        let wheel = Wheel::new(p, c, cb);

        Revolver {
            wheel: wheel.clone(),
            pool: wheel.scan_pool(),
            chain: wheel.scan_chain()
        }
    }

    /// find the master cowboy
    pub fn master(&self) -> Cowboy {
        self.wheel.master()
    }

    /// shoot transaction
    pub fn shoot(&mut self, tx: Transaction) {
        &self.pool.push(tx);
        &self.wheel.fill_pool(&self.pool);
        self.pool = self.wheel.scan_pool();
    }

    /// refresh chain records.
    pub fn revolve(&mut self, bc: Barrel) {
        &self.chain.push(bc);
        &self.wheel.stretch_chain(&self.chain);
        self.chain = self.wheel.scan_chain();

        self.wheel.pool.clean();
    }

    /// clean database
    pub fn explode(&self) {
        if self.wheel.pool.path.exists() {
            self.wheel.pool.clean();
        }
        
        self.wheel.chain.clean();
        self.wheel.cowboy.clean();
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn revolver() {
        let revolver = Revolver::locate("test_pool", "test_chain", "test_cowboy");
        
        assert_eq!(revolver.pool.len(), 0);
        assert_eq!(revolver.pool.to_bytes().len(), 8);
        assert_eq!(revolver.pool, TransactionArray::default());

        assert_eq!(revolver.chain.len(), 1);
        assert_eq!(revolver.chain.to_bytes().len(), 239);

        assert_eq!(revolver.master().to_bytes().len(), 72);
        revolver.explode();
    }
}