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

use pallas_codec::minicbor::{data::Tag, decode, encode, Decode, Decoder, Encode, Encoder};

use super::{
    protocol::{Message, TxIdAndSize},
    EraTxBody, EraTxId,
};

impl<TxId: Encode<()>> Encode<()> for TxIdAndSize<TxId> {
    fn encode<W: encode::Write>(
        &self,
        e: &mut Encoder<W>,
        _ctx: &mut (),
    ) -> Result<(), encode::Error<W::Error>> {
        e.array(2)?;
        e.encode(&self.0)?;
        e.u32(self.1)?;

        Ok(())
    }
}

impl<'b, TxId: Decode<'b, ()>> Decode<'b, ()> for TxIdAndSize<TxId> {
    fn decode(d: &mut Decoder<'b>, _ctx: &mut ()) -> Result<Self, decode::Error> {
        d.array()?;

        let tx_id = d.decode()?;

        let size = d.u32()?;

        Ok(Self(tx_id, size))
    }
}

impl<TxId: Encode<()>, TxBody: Encode<()>> Encode<()> for Message<TxId, TxBody> {
    fn encode<W: encode::Write>(
        &self,
        e: &mut Encoder<W>,
        _ctx: &mut (),
    ) -> Result<(), encode::Error<W::Error>> {
        match self {
            Message::Init => {
                e.array(1)?.u16(6)?;
                Ok(())
            }
            Message::RequestTxIds(blocking, ack, req) => {
                e.array(4)?.u16(0)?;
                e.bool(*blocking)?;
                e.u16(*ack)?;
                e.u16(*req)?;
                Ok(())
            }
            Message::ReplyTxIds(ids) => {
                e.array(2)?.u16(1)?;
                e.begin_array()?;
                for id in ids {
                    e.encode(id)?;
                }
                e.end()?;
                Ok(())
            }
            Message::RequestTxs(ids) => {
                e.array(2)?.u16(2)?;
                e.begin_array()?;
                for id in ids {
                    e.encode(id)?;
                }
                e.end()?;
                Ok(())
            }
            Message::ReplyTxs(txs) => {
                e.array(2)?.u16(3)?;
                e.begin_array()?;
                for tx in txs {
                    e.encode(tx)?;
                }
                e.end()?;
                Ok(())
            }
            Message::Done => {
                e.array(1)?.u16(4)?;
                Ok(())
            }
        }
    }
}

impl<'b> Decode<'b, ()> for EraTxBody {
    fn decode(d: &mut Decoder<'b>, _ctx: &mut ()) -> Result<Self, decode::Error> {
        d.array()?;
        let era = d.u16()?;
        let tag = d.tag()?;
        if tag != Tag::Cbor {
            return Err(decode::Error::message("Expected encoded CBOR data item"));
        }
        Ok(EraTxBody(era, d.bytes()?.to_vec()))
    }
}

impl Encode<()> for EraTxBody {
    fn encode<W: encode::Write>(
        &self,
        e: &mut Encoder<W>,
        _ctx: &mut (),
    ) -> Result<(), encode::Error<W::Error>> {
        e.array(2)?;
        e.u16(self.0)?;
        e.tag(Tag::Cbor)?;
        e.bytes(&self.1)?;
        Ok(())
    }
}

impl<'b, TxId: Decode<'b, ()>, TxBody: Decode<'b, ()>> Decode<'b, ()> for Message<TxId, TxBody> {
    fn decode(d: &mut Decoder<'b>, _ctx: &mut ()) -> Result<Self, decode::Error> {
        d.array()?;
        let label = d.u16()?;

        match label {
            0 => {
                let blocking = d.bool()?;
                let ack = d.u16()?;
                let req = d.u16()?;
                Ok(Message::RequestTxIds(blocking, ack, req))
            }
            1 => {
                let items = d.decode()?;
                Ok(Message::ReplyTxIds(items))
            }
            2 => {
                let ids = d.decode()?;
                Ok(Message::RequestTxs(ids))
            }
            3 => Ok(Message::ReplyTxs(
                d.array_iter()?.collect::<Result<_, _>>()?,
            )),
            4 => Ok(Message::Done),
            6 => Ok(Message::Init),
            _ => Err(decode::Error::message(
                "unknown variant for txsubmission message",
            )),
        }
    }
}

impl Encode<()> for EraTxId {
    fn encode<W: encode::Write>(
        &self,
        e: &mut Encoder<W>,
        _ctx: &mut (),
    ) -> Result<(), encode::Error<W::Error>> {
        e.array(2)?;
        e.encode(self.0)?;
        e.bytes(&self.1)?;

        Ok(())
    }
}

impl<'b> Decode<'b, ()> for EraTxId {
    fn decode(d: &mut Decoder<'b>, _ctx: &mut ()) -> Result<Self, decode::Error> {
        d.array()?;

        let era = d.u16()?;

        let tx_id = d.bytes()?;

        Ok(Self(era, tx_id.to_vec()))
    }
}