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

// SPDX-License-Identifier: MIT
// Copyright 2023 IROX Contributors

//!
//! Date Formatters
//!
//! | Letter | Component    | Description                                         | Repeated Ex.   | Example        |
//! |--------|--------------|-----------------------------------------------------|----------------|----------------|
//! |   Y    | Year         | Proleptic Gregorian Calendar Year                   | `YY` or `YYYY` | `05` or `2005` |
//! |   M    | Month        | Month of the year as decimal 01-12                  | `M` or `MM`    | `01`           |
//! |   D    | Day of Year  | Day of the year as decimal 01-366                   | `D` or `DDD`   | `075`          |
//! |   d    | Day of Month | Day of the month as decimal 01-31                   | `d` or `dd`    | `09`           |
//! |   H    | Hour         | Hour of day as decimal 00-24                        | `H` or `HH`    | `08`           |
//! |   m    | Minute       | Minute of hour as decimal 00-59                     | `m` or `mm`    | `07`           |
//! |   s    | Second       | Second of minute as decimal 00-59                   | `s` or `ss`    | `06`           |
//! |   S    | Millis       | Millisecond of Second as decimal 000-999            | `S` or `SSS`   | `051`          |
//! |   U    | Micros       | Microsecond of Second as decimal 000000-999999      | `U`            | `051020`       |
//! |   N    | Nanos        | Nanosecond of Second as decimal 000000000-999999999 | `N`            | `051020946`    |
//!
//!

use std::error::Error;
use std::fmt::{Display, Formatter};
use std::num::{ParseFloatError, ParseIntError};

use irox_units::bounds::GreaterThanEqualToValueError;

pub mod iso8601;
pub mod rfc3339;

///
/// Provides a mechanism to translate a date or a time to a [`String`]
pub trait Format<T> {
    ///
    /// Implementation-specific format of a date or time
    fn format(&self, date: &T) -> String;
}

///
/// Provides a mechanism to parse a date or time from a string.
///
pub trait FormatParser<T> {
    ///
    /// Tries to parse the specified string into the resultant item.
    fn try_from(&self, data: &str) -> Result<T, FormatError>;
}

///
/// Different format error conditions
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum FormatErrorType {
    IOError,
    NumberFormatError,
    OutOfRangeError,
    Other,
}

///
/// Error type returned by the [`FormatParser`]s and [`Format`]ters
#[derive(Debug)]
pub struct FormatError {
    error_type: FormatErrorType,
    msg: String,
}

impl Display for FormatError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        f.write_fmt(format_args!("{:?}{}", self.error_type, self.msg))
    }
}

impl Error for FormatError {}

impl FormatError {
    /// Creates a new format error
    #[must_use]
    pub fn new(error_type: FormatErrorType, msg: String) -> FormatError {
        FormatError { error_type, msg }
    }

    /// Helper for returning errors
    pub fn err<T>(msg: String) -> Result<T, Self> {
        Err(Self::new(FormatErrorType::Other, msg))
    }

    /// Helper for returning errors
    pub fn err_str<T>(msg: &'static str) -> Result<T, Self> {
        Err(Self::new(FormatErrorType::Other, msg.to_string()))
    }
}

impl From<std::io::Error> for FormatError {
    fn from(value: std::io::Error) -> Self {
        FormatError {
            error_type: FormatErrorType::IOError,
            msg: value.to_string(),
        }
    }
}
impl From<ParseIntError> for FormatError {
    fn from(value: ParseIntError) -> Self {
        FormatError {
            error_type: FormatErrorType::NumberFormatError,
            msg: value.to_string(),
        }
    }
}
impl From<ParseFloatError> for FormatError {
    fn from(value: ParseFloatError) -> Self {
        FormatError {
            error_type: FormatErrorType::NumberFormatError,
            msg: value.to_string(),
        }
    }
}
impl From<GreaterThanEqualToValueError<u8>> for FormatError {
    fn from(value: GreaterThanEqualToValueError<u8>) -> Self {
        FormatError {
            error_type: FormatErrorType::OutOfRangeError,
            msg: value.to_string(),
        }
    }
}

impl From<GreaterThanEqualToValueError<u16>> for FormatError {
    fn from(value: GreaterThanEqualToValueError<u16>) -> Self {
        FormatError {
            error_type: FormatErrorType::OutOfRangeError,
            msg: value.to_string(),
        }
    }
}

impl From<GreaterThanEqualToValueError<f64>> for FormatError {
    fn from(value: GreaterThanEqualToValueError<f64>) -> Self {
        FormatError {
            error_type: FormatErrorType::OutOfRangeError,
            msg: value.to_string(),
        }
    }
}

impl From<GreaterThanEqualToValueError<u32>> for FormatError {
    fn from(value: GreaterThanEqualToValueError<u32>) -> Self {
        FormatError {
            error_type: FormatErrorType::OutOfRangeError,
            msg: value.to_string(),
        }
    }
}