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

pub mod token;

use crate::error::{Error, UpstreamError};
use crate::{AuthScheme, Config};
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use url::Url;

pub const METADATA_LABEL_NAME: &str = "io.flipt.auth.token.name";
pub const METADATA_LABEL_DESCRIPTION: &str = "io.flipt.auth.token.description";

const DEFAULT_LIMIT: usize = 100;

pub type Result<T> = anyhow::Result<T>;

#[derive(Debug)]
pub struct AuthClient {
    client: reqwest::Client,
    auth_scheme: AuthScheme,
    endpoint: Url,
}

impl AuthClient {
    pub fn new(config: Config) -> Result<Self> {
        let client = reqwest::Client::builder()
            .user_agent(config.user_agent)
            .build()?;

        Ok(Self {
            client,
            auth_scheme: config.auth_scheme,
            endpoint: config.endpoint,
        })
    }

    pub async fn me(&self) -> Result<Authentication> {
        self.get("/auth/v1/self", None::<&()>).await
    }

    pub fn tokens(&self) -> token::TokenClient {
        token::TokenClient::new(self)
    }

    pub(crate) async fn get<P, R>(&self, path: &str, params: Option<&P>) -> Result<R>
    where
        P: serde::Serialize,
        R: serde::de::DeserializeOwned,
    {
        let url = self.build_url(path)?;
        let mut request = self.client.get(url);
        if let Some(params) = params {
            request = request.query(params);
        }
        let resp = self.send(request).await?;
        deserialize(resp).await
    }

    pub(crate) async fn post<B, R>(&self, path: &str, body: Option<&B>) -> Result<R>
    where
        B: serde::Serialize,
        R: serde::de::DeserializeOwned,
    {
        let url = self.build_url(path)?;
        let mut request = self.client.post(url);
        if let Some(body) = body {
            request = request
                .header("Content-Type", "application/json")
                .json(body);
        }
        let resp = self.send(request).await?;
        deserialize(resp).await
    }

    pub(crate) async fn delete<P, R>(&self, path: &str, params: Option<&P>) -> Result<R>
    where
        P: serde::Serialize,
        R: serde::de::DeserializeOwned,
    {
        let url = self.build_url(path)?;
        let mut request = self.client.delete(url);
        if let Some(params) = params {
            request = request.query(params);
        }
        let resp = self.send(request).await?;
        deserialize(resp).await
    }

    async fn send(&self, mut request: reqwest::RequestBuilder) -> Result<reqwest::Response> {
        match self.auth_scheme {
            AuthScheme::None => {}
            AuthScheme::BearerToken(ref token) => {
                request = request.bearer_auth(token);
            }
        }
        Ok(request.send().await?)
    }

    fn build_url(&self, path: &str) -> Result<Url> {
        Ok(self.endpoint.join(path)?)
    }
}

pub async fn deserialize<T: serde::de::DeserializeOwned>(resp: reqwest::Response) -> Result<T> {
    if resp.status().is_success() {
        return Ok(resp.json::<T>().await?);
    }
    let parsed_err = resp.json::<UpstreamError>().await?;
    Err(anyhow::Error::new(Error::Upstream(parsed_err)))
}

#[derive(Debug, Clone, Eq, PartialEq, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct Authentication {
    pub id: String,
    pub metadata: HashMap<String, String>,
    pub method: Method,
    pub expires_at: Option<DateTime<Utc>>,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
}

#[derive(Debug, Clone, Eq, PartialEq, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct AuthenticationList {
    pub authentications: Vec<Authentication>,
    pub next_page_token: String,
}

#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
pub enum Method {
    #[serde(rename = "METHOD_NONE")]
    None,
    #[serde(rename = "METHOD_TOKEN")]
    Token,
}