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

use crate::{
  api_config::SharedAPIConfig,
  error::{APIErrorResponse, Error},
  request_builder::RequestBuilder,
};
use std::marker::PhantomData;

pub struct Request<Body, Query, Response> {
  pub(crate) builder: reqwest::RequestBuilder,
  pub(crate) api_config: SharedAPIConfig,
  pub(crate) _body: PhantomData<Body>,
  pub(crate) _query: PhantomData<Query>,
  pub(crate) _response: PhantomData<Response>,
}

impl<Body, Query, Response> Request<Body, Query, Response>
where
  Body: serde::Serialize,
  Query: serde::Serialize,
  Response: serde::de::DeserializeOwned,
{
  pub fn builder(config: &SharedAPIConfig) -> RequestBuilder<Body, Query, Response> {
    RequestBuilder::new(config)
  }

  pub fn query(mut self, query: &Query) -> Self {
    self.builder = self.builder.query(query);

    self
  }

  pub fn body(mut self, body: &Body) -> Self {
    self.builder = self.builder.json(body);

    self
  }

  pub async fn send(self) -> Result<Response, Error> {
    let mut builder = self
      .builder
      .header("User-Agent", "octocrate")
      .header("Accept", "application/vnd.github+json");

    if let Some(token) = &self.api_config.token {
      if let Some(token) = token.get_token() {
        builder = builder.header("Authorization", format!("Bearer {}", token));
      }
    }

    let res = builder.send().await;
    match res {
      Ok(res) => {
        let status = res.status();
        if !status.is_success() {
          if let Ok(error_response) = res.json::<APIErrorResponse>().await {
            return Err(Error::RequestFailed(error_response));
          }

          let err_msg = format!("Request failed with {}", status.to_string());
          return Err(Error::Error(err_msg));
        }

        let res = res
          .text()
          .await
          .map_err(|err| Error::Error(format!("Failed to read response: {}", err)))?;

        match serde_json::from_str(&res) {
          Ok(response) => {
            return Ok(response);
          }
          Err(error) => {
            return Err(Error::Error(format!(
              "Failed to parse response: {}\nResponse: {}",
              error, res
            )));
          }
        }
      }
      Err(err) => {
        return Err(Error::Error(err.to_string()));
      }
    }
  }
}

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

  #[tokio::test]
  async fn test_request_builder() {
    let config = APIConfig::default().shared();

    #[derive(serde::Serialize)]
    struct Query {
      page: u32,
    }

    #[derive(serde::Serialize)]
    struct Body {
      name: String,
    }

    #[derive(serde::Deserialize)]
    struct Response {
      full_name: String,
    }

    let request = Request::<Body, Query, Response>::builder(&config)
      .get("/repos/panghu-huang/octocrate")
      .build();

    let response = request.query(&Query { page: 1 }).send().await.unwrap();

    assert_eq!(response.full_name, "panghu-huang/octocrate");
  }
}