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

use std::fmt::Debug;
use std::rc::Rc;

use yew::prelude::*;

use super::{use_effect_once, use_effect_update, use_effect_update_with_deps, use_previous};

/// This hook logs in console as component goes through life-cycles.
///
/// # Example
///
/// ```rust
/// # use yew::prelude::*;
/// #
/// use yew_hooks::prelude::*;
///
/// #[function_component(UseLogger)]
/// fn logger(props: &Props) -> Html {
///     use_logger("MyComponent".to_string(), props.clone());
///
///     let c = use_state(|| 0);
///     let d = use_state(|| "d".to_string());
///     use_logger("MyComponent".to_string(), (c.clone(), d.clone()));
///     
///     html! {
///         <>
///             <b>{ " a: " }</b> { props.a }
///             <b>{ " b: " }</b> { &props.b }
///             <b>{ " c: " }</b> { *c }
///             <b>{ " d: " }</b> { &*d }
///         </>
///     }
/// }
///
/// #[derive(Debug, Properties, PartialEq, Clone)]
/// struct Props {
///     pub a: i32,
///     pub b: String,
/// }
/// ```
#[hook]
pub fn use_logger<T>(name: String, props: T)
where
    T: Debug + 'static,
{
    let name = Rc::new(name);
    let props = Rc::new(props);

    {
        let name = name.clone();
        let props = props.clone();

        use_effect_once(move || {
            log::debug!("{} mounted: {:?}", name, props);

            move || log::debug!("{} unmounted", name)
        });
    }

    use_effect_update(move || {
        log::debug!("{} updated: {:?}", name, props);
        || ()
    });
}

/// This hook logs in console as component goes through life-cycles.
/// Like [`use_logger`] but only logs when `prev_state != next_state`.
/// This requires the props to implement [`PartialEq`].
///
/// # Example
///
/// ```rust
/// # use yew::prelude::*;
/// #
/// use yew_hooks::prelude::*;
///
/// #[function_component(UseLogger)]
/// fn logger(props: &Props) -> Html {
///     use_logger_eq("MyComponent".to_string(), props.clone());
///
///     let c = use_state(|| 0);
///     let d = use_state(|| "d".to_string());
///     use_logger_eq("MyComponent".to_string(), (c.clone(), d.clone()));
///     
///     html! {
///         <>
///             <b>{ " a: " }</b> { props.a }
///             <b>{ " b: " }</b> { &props.b }
///             <b>{ " c: " }</b> { *c }
///             <b>{ " d: " }</b> { &*d }
///         </>
///     }
/// }
///
/// #[derive(Debug, Properties, PartialEq, Clone)]
/// struct Props {
///     pub a: i32,
///     pub b: String,
/// }
/// ```
#[hook]
pub fn use_logger_eq<T>(name: String, props: T)
where
    T: Debug + PartialEq + 'static,
{
    let name = Rc::new(name);
    let props = Rc::new(props);
    let props_prev = use_previous(props.clone());

    {
        let name = name.clone();
        let props = props.clone();

        use_effect_once(move || {
            log::debug!("{} mounted: {:?}", name, props);

            move || log::debug!("{} unmounted", name)
        });
    }

    use_effect_update_with_deps(
        move |props| {
            log::debug!("{} updated: from {:?}, to {:?}", name, *props_prev, props);
            || ()
        },
        props,
    );
}