ocpi 0.3.5

Unofficial, in progress, OCPI implementation
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
160
161
162
163
164
165
166
167
168
169

use std::{fmt, str::FromStr};

static PARSE_FORMAT: &str = "%FT%T%.f%Z";
static FORMAT: &str = "%FT%T%.f";

pub struct Date(chrono::NaiveDate);

impl Date {
    pub fn from_ymd(year: i32, month: u32, day: u32) -> Date {
        Date(chrono::NaiveDate::from_ymd(year, month, day))
    }

    pub fn and_hms(&self, hour: u32, min: u32, sec: u32) -> DateTime {
        DateTime(self.0.and_hms(hour, min, sec))
    }

    pub fn and_hms_milli(&self, hour: u32, min: u32, sec: u32, millis: u32) -> DateTime {
        DateTime(self.0.and_hms_milli(hour, min, sec, millis))
    }
}

/// DateTime is valid OCPI datetime. It's always in UTC.
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, serde::Serialize)]
pub struct DateTime(pub chrono::NaiveDateTime);

impl DateTime {
    pub fn now() -> Self {
        Self(chrono::Utc::now().naive_utc())
    }

    pub fn utc(&self) -> chrono::DateTime<chrono::Utc> {
        chrono::DateTime::from_utc(self.0, chrono::Utc)
    }
}

impl From<chrono::DateTime<chrono::Utc>> for DateTime {
    fn from(dt: chrono::DateTime<chrono::Utc>) -> Self {
        Self(dt.naive_utc())
    }
}

impl From<chrono::NaiveDateTime> for DateTime {
    fn from(dt: chrono::NaiveDateTime) -> Self {
        Self(dt)
    }
}
impl From<&chrono::NaiveDateTime> for DateTime {
    fn from(dt: &chrono::NaiveDateTime) -> Self {
        Self(*dt)
    }
}

impl FromStr for DateTime {
    type Err = chrono::ParseError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        Ok(Self(chrono::NaiveDateTime::parse_from_str(
            s,
            PARSE_FORMAT,
        )?))
    }
}

impl fmt::Display for DateTime {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}", self.0.format(FORMAT))
    }
}

impl<'de> serde::Deserialize<'de> for DateTime {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: serde::de::Deserializer<'de>,
    {
        deserializer.deserialize_str(crate::common::FromStrVisitor::expecting(
            "a valid OCPI datetime",
        ))
    }
}

#[cfg(test)]
mod tests {

    use chrono::{Datelike, Timelike};

    use super::*;

    #[test]
    fn test_display() {
        assert_eq!(
            "2018-01-01T01:08:01.123",
            Date::from_ymd(2018, 1, 1)
                .and_hms_milli(1, 8, 1, 123)
                .to_string()
        );
    }

    #[test]
    fn test_from_str() {
        "2015-06-29T20:39:09Z".parse::<DateTime>().expect("Parsing");
        "2015-06-29T20:39:09".parse::<DateTime>().expect("Parsing");
        "2016-12-29T17:45:09.2Z"
            .parse::<DateTime>()
            .expect("Parsing");
        "2016-12-29T17:45:09.2"
            .parse::<DateTime>()
            .expect("Parsing");
        "2018-01-01T01:08:01.123Z"
            .parse::<DateTime>()
            .expect("Parsing");
        "2018-01-01T01:08:01.123"
            .parse::<DateTime>()
            .expect("Parsing");
    }
    #[test]
    fn test_deserialize() {
        let res =
            serde_json::from_str::<DateTime>(r#""2015-06-29T20:39:09Z""#).expect("Deserializing");
        assert_eq!(res.0.year(), 2015);
        assert_eq!(res.0.month(), 6);
        assert_eq!(res.0.day(), 29);
        assert_eq!(res.0.hour(), 20);
        assert_eq!(res.0.minute(), 39);
        assert_eq!(res.0.second(), 9);
        let res = serde_json::from_str::<DateTime>(r#""2015-06-29T20:39:09""#).expect("Deser");
        assert_eq!(res.0.year(), 2015);
        assert_eq!(res.0.month(), 6);
        assert_eq!(res.0.day(), 29);
        assert_eq!(res.0.hour(), 20);
        assert_eq!(res.0.minute(), 39);
        assert_eq!(res.0.second(), 9);

        let res = serde_json::from_str::<DateTime>(r#""2016-12-29T17:45:09.2Z""#).expect("Deser");
        assert_eq!(res.0.year(), 2016);
        assert_eq!(res.0.month(), 12);
        assert_eq!(res.0.day(), 29);
        assert_eq!(res.0.hour(), 17);
        assert_eq!(res.0.minute(), 45);
        assert_eq!(res.0.second(), 9);
        assert_eq!(res.0.nanosecond(), 200000000);

        let res = serde_json::from_str::<DateTime>(r#""2016-12-29T17:45:09.2""#).expect("Deser");
        assert_eq!(res.0.year(), 2016);
        assert_eq!(res.0.month(), 12);
        assert_eq!(res.0.day(), 29);
        assert_eq!(res.0.hour(), 17);
        assert_eq!(res.0.minute(), 45);
        assert_eq!(res.0.second(), 9);
        assert_eq!(res.0.nanosecond(), 200000000);

        let res = serde_json::from_str::<DateTime>(r#""2018-01-01T01:08:01.123Z""#).expect("Deser");
        assert_eq!(res.0.year(), 2018);
        assert_eq!(res.0.month(), 1);
        assert_eq!(res.0.day(), 1);
        assert_eq!(res.0.hour(), 1);
        assert_eq!(res.0.minute(), 8);
        assert_eq!(res.0.second(), 1);
        assert_eq!(res.0.nanosecond(), 123000000);

        let res = serde_json::from_str::<DateTime>(r#""2018-01-01T01:08:01.123""#).expect("Deser");
        assert_eq!(res.0.year(), 2018);
        assert_eq!(res.0.month(), 1);
        assert_eq!(res.0.day(), 1);
        assert_eq!(res.0.hour(), 1);
        assert_eq!(res.0.minute(), 8);
        assert_eq!(res.0.second(), 1);
        assert_eq!(res.0.nanosecond(), 123000000);
    }
}