mise 2024.5.13

The front-end to your dev env
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

use std::collections::HashMap;
use std::fmt::Formatter;
use std::str::FromStr;

use either::Either;
use serde::de;
use tera::{Context, Tera};

use crate::task::EitherStringOrBool;

pub struct TomlParser<'a> {
    table: &'a toml::Value,
    tera: Tera,
    tera_ctx: Context,
}

impl<'a> TomlParser<'a> {
    pub fn new(table: &'a toml::Value, tera: Tera, tera_ctx: Context) -> Self {
        Self {
            table,
            tera,
            tera_ctx,
        }
    }

    pub fn parse_str<T>(&self, key: &str) -> eyre::Result<Option<T>>
    where
        T: From<String>,
    {
        self.table
            .get(key)
            .and_then(|value| value.as_str())
            .map(|s| self.render_tmpl(s))
            .transpose()
    }
    pub fn parse_bool(&self, key: &str) -> Option<bool> {
        self.table.get(key).and_then(|value| value.as_bool())
    }
    pub fn parse_array<T>(&self, key: &str) -> eyre::Result<Option<Vec<T>>>
    where
        T: Default + From<String>,
    {
        self.table
            .get(key)
            .and_then(|value| value.as_array())
            .map(|array| {
                array
                    .iter()
                    .filter_map(|value| value.as_str().map(|v| self.render_tmpl(v)))
                    .collect::<eyre::Result<Vec<T>>>()
            })
            .transpose()
    }
    pub fn parse_env(
        &self,
        key: &str,
    ) -> eyre::Result<Option<HashMap<String, EitherStringOrBool>>> {
        self.table
            .get(key)
            .and_then(|value| value.as_table())
            .map(|table| {
                table
                    .iter()
                    .map(|(key, value)| {
                        let v = value
                            .as_str()
                            .map(|v| Ok(EitherStringOrBool(Either::Left(self.render_tmpl(v)?))))
                            .or_else(|| {
                                value
                                    .as_integer()
                                    .map(|v| Ok(EitherStringOrBool(Either::Left(v.to_string()))))
                            })
                            .or_else(|| {
                                value
                                    .as_bool()
                                    .map(|v| Ok(EitherStringOrBool(Either::Right(v))))
                            })
                            .unwrap_or_else(|| {
                                Err(eyre::eyre!("invalid env value: {:?}", value))
                            })?;
                        Ok((key.clone(), v))
                    })
                    .collect::<eyre::Result<HashMap<String, EitherStringOrBool>>>()
            })
            .transpose()
    }

    fn render_tmpl<T>(&self, tmpl: &str) -> eyre::Result<T>
    where
        T: From<String>,
    {
        let tmpl = self.tera.clone().render_str(tmpl, &self.tera_ctx)?;
        Ok(tmpl.into())
    }
}

pub fn deserialize_arr<'de, D, T>(deserializer: D) -> eyre::Result<Vec<T>, D::Error>
where
    D: de::Deserializer<'de>,
    T: FromStr,
    <T as FromStr>::Err: std::fmt::Display,
{
    struct ArrVisitor<T>(std::marker::PhantomData<T>);

    impl<'de, T> de::Visitor<'de> for ArrVisitor<T>
    where
        T: FromStr,
        <T as FromStr>::Err: std::fmt::Display,
    {
        type Value = Vec<T>;
        fn expecting(&self, formatter: &mut Formatter) -> std::fmt::Result {
            formatter.write_str("string or array of strings")
        }

        fn visit_str<E>(self, v: &str) -> std::result::Result<Self::Value, E>
        where
            E: de::Error,
        {
            let v = v.parse().map_err(de::Error::custom)?;
            Ok(vec![v])
        }

        fn visit_seq<S>(self, mut seq: S) -> std::result::Result<Self::Value, S::Error>
        where
            S: de::SeqAccess<'de>,
        {
            let mut v = vec![];
            while let Some(s) = seq.next_element::<String>()? {
                v.push(s.parse().map_err(de::Error::custom)?);
            }
            Ok(v)
        }
    }

    deserializer.deserialize_any(ArrVisitor(std::marker::PhantomData))
}