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

use super::data_information::{self};
use super::data_record::DataRecord;
use super::DataRecords;

#[derive(Debug, PartialEq)]
pub enum DataRecordError {
    DataInformationError(data_information::DataInformationError),
    InsufficientData,
}

#[derive(Debug, PartialEq)]
pub enum VariableUserDataError {
    DataInformationError(DataRecordError),
}

impl From<DataRecordError> for VariableUserDataError {
    fn from(error: DataRecordError) -> Self {
        VariableUserDataError::DataInformationError(error)
    }
}

impl TryFrom<&[u8]> for DataRecords {
    type Error = VariableUserDataError;
    fn try_from(data: &[u8]) -> Result<DataRecords, VariableUserDataError> {
        let mut records = DataRecords::new();
        let mut offset = 0;
        let mut _more_records_follow = false;

        while offset < data.len() {
            match data[offset] {
                0x0F => {
                    /* TODO: parse manufacturer specific */
                    offset = data.len();
                }
                0x1F => {
                    /* TODO: parse manufacturer specific */
                    _more_records_follow = true;
                    offset = data.len();
                }
                0x2F => {
                    offset += 1;
                }
                _ => {
                    let record = DataRecord::try_from(&data[offset..])?;
                    offset += record.get_size();
                    let _res = records.add_record(record);
                }
            }
        }

        Ok(records)
    }
}

mod tests {

    #[test]
    fn test_parse_variable_data() {
        use crate::user_data::DataRecords;

        /* Data block 1: unit 0, storage No 0, no tariff, instantaneous volume, 12565 l (24 bit integer) */
        /* DIF = 0x03, VIF = 0x13, Value = 0x153100 */
        let data = &[0x03, 0x13, 0x15, 0x31, 0x00];

        let _result = DataRecords::try_from(data.as_slice());
    }

    #[test]
    fn test_parse_variable_data2() {
        /* Data block 2: unit 0, storage No 5, no tariff, maximum volume flow, 113 l/h (4 digit BCD) */
        let _data = &[0x01, 0xFD, 0x1B, 0x00];
    }

    /*  Out: PlainText : Unit "%RH"  Value:   33.96
    In: 0x02, 0xFC, 0x03, 0x48, 0x52, 0x25, 0x74, 0x44, 0x0D*/
    #[cfg(feature = "plaintext-before-extension")]
    #[test]
    fn test_parse_variable_data3() {
        use crate::user_data::DataRecords;
        /* Data block 3: unit 1, storage No 0, tariff 2, instantaneous energy, 218,37 kWh (6 digit BCD) */
        let data = &[0x02, 0xFC, 0x03, 0x48, 0x52, 0x25, 0x74, 0x44, 0x0D];
        let _data = DataRecords::try_from(data.as_slice());
    }

    /*  Out: PlainText : Unit "%RH"  Value:   33.96
    In: 0x02, 0xFC, 0x03, 0x48, 0x52, 0x25, 0x74, 0x44, 0x0D*/
    #[cfg(not(feature = "plaintext-before-extension"))]
    #[test]
    fn test_parse_variable_data3() {
        use crate::user_data::DataRecords;
        /* Data block 3: unit 1, storage No 0, tariff 2, instantaneous energy, 218,37 kWh (6 digit BCD) */
        let data = &[0x02, 0xFC, 0x74, 0x03, 0x48, 0x52, 0x25, 0x44, 0x0D];
        let _data = DataRecords::try_from(data.as_slice());
    }

    fn _test_parse_variable_data2() {
        /* Data block 2: unit 0, storage No 5, no tariff, maximum volume flow, 113 l/h (4 digit BCD) */
        let _data = &[0xDA, 0x02, 0x3B, 0x13, 0x01];
    }

    fn _test_parse_variable_data3() {
        /* Data block 3: unit 1, storage No 0, tariff 2, instantaneous energy, 218,37 kWh (6 digit BCD) */
        let _data = &[0x8B, 0x60, 0x04, 0x37, 0x18, 0x02];
    }
}