algorithm_problem_client/atcoder/
client.rs1use crate::util;
2use crate::Result;
3
4use super::*;
5
6const ATCODER_PREFIX: &str = "https://atcoder.jp";
7
8pub struct AtCoderClient;
9
10impl Default for AtCoderClient {
11 fn default() -> Self {
12 Self
13 }
14}
15
16impl AtCoderClient {
17 pub async fn fetch_atcoder_contests(&self, page: u32) -> Result<Vec<AtCoderContest>> {
18 let url = format!("{}/contests/archive?lang=ja&page={}", ATCODER_PREFIX, page);
19 let html = util::get_html(&url).await?;
20 contest::scrape(&html)
21 }
22
23 pub async fn fetch_atcoder_submission_list(
25 &self,
26 contest_id: &str,
27 page: Option<u32>,
28 ) -> Result<AtCoderSubmissionListResponse> {
29 let page = page.unwrap_or(1);
30 let url = format!(
31 "{}/contests/{}/submissions?page={}",
32 ATCODER_PREFIX, contest_id, page
33 );
34 let html = util::get_html(&url).await?;
35 let submissions = submission::scrape(&html, contest_id)?;
36 let max_page = submission::scrape_submission_page_count(&html)?;
37 Ok(AtCoderSubmissionListResponse {
38 max_page,
39 submissions,
40 })
41 }
42
43 pub async fn fetch_problem_list(&self, contest_id: &str) -> Result<Vec<AtCoderProblem>> {
44 let url = format!("{}/contests/{}/tasks", ATCODER_PREFIX, contest_id);
45 let html = util::get_html(&url).await?;
46 problem::scrape(&html, contest_id)
47 }
48}
49
50#[cfg(test)]
51mod tests {
52 use super::*;
53 use futures::executor::block_on;
54
55 #[test]
56 fn test_fetch_contest_list() {
57 let client = AtCoderClient::default();
58 let contests = block_on(client.fetch_atcoder_contests(1)).unwrap();
59 assert_eq!(contests.len(), 50);
60 }
61
62 #[test]
63 fn test_fetch_problem_list() {
64 let client = AtCoderClient::default();
65 let problems = block_on(client.fetch_problem_list("abc107")).unwrap();
66 assert_eq!(problems.len(), 4);
67 }
68
69 #[test]
70 fn test_fetch_submission_list() {
71 let client = AtCoderClient::default();
72 let response = block_on(client.fetch_atcoder_submission_list("xmascon17", None)).unwrap();
73 assert_eq!(response.submissions.len(), 20);
74
75 let response =
76 block_on(client.fetch_atcoder_submission_list("xmascon17", Some(response.max_page)))
77 .unwrap();
78 assert!(!response.submissions.is_empty());
79
80 let response = block_on(
81 client.fetch_atcoder_submission_list("xmascon17", Some(response.max_page + 1)),
82 );
83 assert!(response.is_err());
84 }
85}