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

//! Ipify
//!
//! My implementation of the ipify-cli.org API to get your own public IP address
//!
//! The fastest way to use it is to use the `myip()` wrapper:
//!
//! Example:
//! ```
//! use ipify_rs::myip;
//!
//! println!("My IP is: {}", myip());
//! ```
//!
//! The full API is described below.

/// IPv4 endpoint, plain text
const ENDPOINT4: &str = "https://api.ipify.org";
/// IPv6 endpoint, plain text
const ENDPOINT6: &str = "https://api64.ipify.org";
/// IPv4 endpoint, JSON
const ENDPOINT4J: &str = "https://api.ipify.org?format=json";
/// IPv6 endpoint, JSON
const ENDPOINT6J: &str = "https://api64.ipify.org?format=json";

/// Minimalistic API
///
/// Example:
/// ```
/// use ipify_rs::myip;
///
/// println!("{}", myip())
/// ```
///
pub fn myip() -> String {
    Ipify::new().call()
}

/// The current set of operations
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Op {
    /// Plain text
    IPv4,
    /// Plain text (default)
    IPv6,
    /// Json output
    IPv4J,
    /// Json output
    IPv6J,
}

/// The main API struct
#[derive(Clone, Copy, Debug)]
pub struct Ipify<'a> {
    /// Current type of operation
    pub t: Op,
    /// Endpoint, different for every operation
    pub endp: &'a str,
}

/// Impl. default values.
impl<'a> Default for Ipify<'a> {
    fn default() -> Self {
        Self::new()
    }
}

/// API Implementation
impl<'a> Ipify<'a> {
    /// Create a new API instance client with the defaults
    ///
    /// Example:
    /// ```
    /// use ipify_rs::*;
    ///
    /// let mut a = Ipify::new();
    ///
    /// println!("{}", a.call());
    /// ```
    ///
    pub fn new() -> Self {
        Ipify {
            t: Op::IPv6,
            endp: ENDPOINT6,
        }
    }

    /// Specify the subsequent operation to perform on `call()`
    ///
    /// Examples:
    /// ```
    /// use ipify_rs::{Ipify, Op};
    ///
    /// let mut a = Ipify::new();
    /// a.set(Op::IPv6J);
    ///
    /// println!("{}", a.call());
    /// ```
    ///
    pub fn set(mut self, op: Op) -> Self {
        self.endp = match op {
            Op::IPv4 => ENDPOINT4,
            Op::IPv6 => ENDPOINT6,
            Op::IPv4J => ENDPOINT4J,
            Op::IPv6J => ENDPOINT6J,
        };
        self.t = op;
        self
    }

    /// Actually perform the API call
    ///
    /// Example:
    /// ```
    /// use ipify_rs::Ipify;
    ///
    /// let r = Ipify::new().call();
    ///
    /// println!("my ip = {}", r);
    /// ```
    ///
    pub fn call(self) -> String {
        let c = reqwest::blocking::ClientBuilder::new()
            .user_agent("ipify-cli/1.0.0")
            .build()
            .unwrap();
        c.get(self.endp).send().unwrap().text().unwrap()
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_set_1() {
        let c = Ipify::new();

        assert_eq!(Op::IPv6, c.t);
        let c = c.set(Op::IPv4J);
        assert_eq!(Op::IPv4J, c.t);
        let c = c.set(Op::IPv6);
        assert_eq!(Op::IPv6, c.t);
    }

    #[test]
    fn test_set_2() {
        let c = Ipify::new().set(Op::IPv4J).set(Op::IPv6J);
        assert_eq!(Op::IPv6J, c.t);
    }

    #[test]
    fn test_with_1() {
        let c = Ipify::new();

        assert_eq!(Op::IPv6, c.t);
    }

    #[test]
    fn test_with_set() {
        let c = Ipify::new();

        assert_eq!(Op::IPv6, c.t);
        let c = c.set(Op::IPv4);
        assert_eq!(Op::IPv4, c.t);

        let c = c.set(Op::IPv4J);
        assert_eq!(Op::IPv4J, c.t);
    }
}