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use reqwest::Error as HttpError;
use serde::Deserialize;
use std::{borrow::Borrow, fmt};
pub mod client;
pub use client::Client;
#[cfg(test)]
mod test;
#[derive(Debug, Deserialize)]
#[serde(bound(deserialize = "T: for<'t> Deserialize<'t>"))]
struct CFResult<T: for<'t> Deserialize<'t>> {
result: Option<T>,
comment: Option<String>,
}
impl<T: for<'t> Deserialize<'t>> From<CFResult<T>> for Result<T> {
fn from(c: CFResult<T>) -> Self {
match c.result {
Some(v) => Ok(v),
None => Err(Error::Codeforces(
c.comment.unwrap_or("Unknown error".to_owned()),
)),
}
}
}
#[derive(Debug)]
pub enum Error {
Http(HttpError),
Decode(serde_json::Error),
Codeforces(String),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::Http(ref e) => write!(f, "HTTP: {}", e),
Error::Decode(ref e) => write!(f, "Decode: {}", e),
Error::Codeforces(ref s) => write!(f, "Codeforces: {}", s),
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Error::Http(ref e) => Some(e),
Error::Decode(ref e) => Some(e),
Error::Codeforces(_) => None,
}
}
}
impl From<HttpError> for Error {
fn from(e: HttpError) -> Self {
Error::Http(e)
}
}
impl From<serde_json::Error> for Error {
fn from(e: serde_json::Error) -> Self {
Error::Decode(e)
}
}
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct User {
pub handle: String,
pub email: Option<String>,
pub first_name: Option<String>,
pub last_name: Option<String>,
pub country: Option<String>,
pub organization: Option<String>,
pub city: Option<String>,
pub contribution: i64,
pub rank: Option<String>,
pub max_rank: Option<String>,
pub rating: Option<i64>,
pub max_rating: Option<i64>,
pub last_online_time_seconds: u64,
pub registration_time_seconds: u64,
pub friend_of_count: u64,
pub avatar: String,
pub title_photo: String,
}
impl User {
pub fn profile_url(&self) -> String {
format!("https://codeforces.com/profile/{}", self.handle)
}
pub fn color(&self) -> u64 {
match self.rating {
None => 0x000000,
Some(rating) => {
if rating < 1200 {
0x808080
} else if rating < 1400 {
0x008000
} else if rating < 1600 {
0x03a89e
} else if rating < 1900 {
0x0000ff
} else if rating < 2100 {
0xaa00aa
} else if rating < 2300 {
0xbbbb00
} else if rating < 2400 {
0xff8c00
} else {
0xff0000
}
}
}
}
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct RatingChange {
pub contest_id: u64,
pub contest_name: String,
pub handle: String,
pub rank: u64,
pub rating_update_time_seconds: u64,
pub old_rating: i64,
pub new_rating: i64,
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
pub enum ContestType {
CF,
IOI,
ICPC,
}
impl fmt::Display for ContestType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
ContestType::CF => write!(f, "Codeforces"),
ContestType::IOI => write!(f, "IOI-based"),
ContestType::ICPC => write!(f, "ACM ICPC-based"),
}
}
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum ContestPhase {
Before,
Coding,
PendingSystemTest,
SystemTest,
Finished,
}
impl fmt::Display for ContestPhase {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use ContestPhase::*;
write!(
f,
"{}",
match self {
Before => "Contest hasn't started",
Coding => "Contest is currently running",
PendingSystemTest => "Pending system test",
SystemTest => "System test running",
Finished => "Finished",
}
)
}
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct Contest {
pub id: u64,
pub name: String,
#[serde(rename = "type")]
pub contest_type: ContestType,
pub phase: ContestPhase,
pub frozen: bool,
pub duration_seconds: u64,
pub start_time_seconds: Option<u64>,
pub relative_time_seconds: Option<i64>,
pub prepared_by: Option<String>,
pub website_url: Option<String>,
pub description: Option<String>,
pub difficulty: Option<u8>,
pub kind: Option<String>,
pub icpc_region: Option<String>,
pub country: Option<String>,
pub city: Option<String>,
pub season: Option<String>,
}
impl Contest {
pub fn url(&self) -> String {
format!("https://codeforces.com/contests/{}", self.id)
}
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum ProblemType {
Programming,
Question,
}
impl fmt::Display for ProblemType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
ProblemType::Programming => write!(f, "Programming"),
ProblemType::Question => write!(f, "Question"),
}
}
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct Problem {
pub contest_id: Option<u64>,
pub problemset_name: Option<String>,
pub index: String,
pub name: String,
#[serde(rename = "type")]
pub problem_type: ProblemType,
pub points: Option<f64>,
pub rating: Option<u64>,
pub tags: Vec<String>,
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct TeamMember {
pub handle: String,
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum ParticipantType {
Contestant,
Practice,
Virtual,
Manager,
OutOfCompetition,
}
impl fmt::Display for ParticipantType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use ParticipantType::*;
write!(
f,
"{}",
match self {
Contestant => "Contestant",
Practice => "Practice",
Virtual => "Virtual",
Manager => "Manager",
OutOfCompetition => "OutOfCompetition",
}
)
}
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct Party {
pub contest_id: Option<u64>,
pub members: Vec<TeamMember>,
pub participant_type: ParticipantType,
pub team_id: Option<u64>,
pub team_name: Option<String>,
pub ghost: bool,
pub room: Option<u64>,
pub start_time_seconds: Option<u64>,
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum ProblemResultType {
Preliminary,
Final,
}
impl fmt::Display for ProblemResultType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{}",
match self {
ProblemResultType::Preliminary => "Preliminary",
ProblemResultType::Final => "Final",
}
)
}
}
#[derive(Debug, Deserialize, Clone, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProblemResult {
pub points: f64,
pub penalty: Option<u64>,
pub rejected_attempt_count: u64,
#[serde(rename = "type")]
pub result_type: ProblemResultType,
pub best_submission_time_seconds: Option<u64>,
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct RanklistRow {
pub party: Party,
pub rank: u64,
pub points: f64,
pub penalty: u64,
pub successful_hack_count: u64,
pub unsuccessful_hack_count: u64,
pub problem_results: Vec<ProblemResult>,
pub last_submission_time_seconds: Option<u64>,
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum Verdict {
Failed,
Ok,
Partial,
CompilationError,
RuntimeError,
WrongAnswer,
PresentationError,
TimeLimitExceeded,
MemoryLimitExceeded,
IdlenessLimitExceeded,
SecurityViolated,
Crashed,
InputPreparationCrashed,
Challenged,
Skipped,
Testing,
Rejected,
}
impl fmt::Display for Verdict {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use Verdict::*;
write!(
f,
"{}",
match self {
Failed => "Failed",
Ok => "Ok",
Partial => "Partial",
CompilationError => "Compilation Error",
RuntimeError => "Runtime Error",
WrongAnswer => "Wrong Answer",
PresentationError => "Presentation Error",
TimeLimitExceeded => "Time Limit Exceeded",
MemoryLimitExceeded => "Memory Limit Exceeded",
IdlenessLimitExceeded => "Idleness Limit Exceeded",
SecurityViolated => "Security Violated",
Crashed => "Crashed",
InputPreparationCrashed => "Input Preparation Crashed",
Challenged => "Challenged",
Skipped => "Skipped",
Testing => "Testing",
Rejected => "Rejected",
}
)
}
}
#[derive(Debug, Deserialize, Clone, Copy, PartialEq, Eq)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub enum SubmissionTestSet {
Samples,
Pretests,
Tests,
Challenges,
#[serde(rename = "TESTS1")]
TestSet1,
#[serde(rename = "TESTS2")]
TestSet2,
#[serde(rename = "TESTS3")]
TestSet3,
#[serde(rename = "TESTS4")]
TestSet4,
#[serde(rename = "TESTS5")]
TestSet5,
#[serde(rename = "TESTS6")]
TestSet6,
#[serde(rename = "TESTS7")]
TestSet7,
#[serde(rename = "TESTS8")]
TestSet8,
#[serde(rename = "TESTS9")]
TestSet9,
#[serde(rename = "TESTS10")]
TestSet10,
}
impl fmt::Display for SubmissionTestSet {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use SubmissionTestSet::*;
write!(
f,
"{}",
match self {
Samples => "Samples",
Pretests => "Pretests",
Tests => "Tests",
Challenges => "Challenges",
TestSet1 => "Test Set 1",
TestSet2 => "Test Set 2",
TestSet3 => "Test Set 3",
TestSet4 => "Test Set 4",
TestSet5 => "Test Set 5",
TestSet6 => "Test Set 6",
TestSet7 => "Test Set 7",
TestSet8 => "Test Set 8",
TestSet9 => "Test Set 9",
TestSet10 => "Test Set 10",
}
)
}
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct Submission {
pub id: u64,
pub contest_id: Option<u64>,
pub creation_time_seconds: u64,
pub relative_time_seconds: Option<u64>,
pub problem: Problem,
pub author: Party,
pub programming_language: String,
pub verdict: Option<Verdict>,
#[serde(rename = "testset")]
pub test_set: SubmissionTestSet,
pub passed_test_count: u64,
pub time_consumed_millis: u64,
pub memory_consumed_bytes: u64,
}
impl User {
pub async fn info<T>(client: &Client, handles: &[T]) -> Result<Vec<User>>
where
T: Borrow<str>,
{
let users: CFResult<_> = client
.borrow()
.await
.get("https://codeforces.com/api/user.info")
.query(&[("handles", handles.join(";"))])
.send()
.await?
.json()
.await?;
users.into()
}
pub async fn rated_list(client: &Client, active_only: bool) -> Result<Vec<User>> {
let users: CFResult<_> = client
.borrow()
.await
.get("https://codeforces.com/api/user.ratedList")
.query(&[("activeOnly", active_only)])
.send()
.await?
.json()
.await?;
users.into()
}
pub async fn rating(client: &Client, handle: &str) -> Result<Vec<RatingChange>> {
let changes: CFResult<_> = client
.borrow()
.await
.get("https://codeforces.com/api/user.rating")
.query(&[("handle", handle)])
.send()
.await?
.json()
.await?;
changes.into()
}
pub async fn status(
client: &Client,
handle: &str,
from: u64,
count: u64,
) -> Result<Vec<Submission>> {
let submissions: CFResult<_> = client
.borrow()
.await
.get("https://codeforces.com/api/user.status")
.query(&[("handle", handle)])
.query(&[("from", from.max(1)), ("count", count.min(1))])
.send()
.await?
.json()
.await?;
submissions.into()
}
}
#[derive(Debug, Default)]
pub struct ContestRankingsBuilder {
from: Option<u64>,
count: Option<u64>,
handles: Option<Vec<String>>,
room: Option<u64>,
allow_unofficial: bool,
}
impl ContestRankingsBuilder {
pub fn limit(&mut self, from: u64, count: u64) -> &mut Self {
self.from = Some(from);
self.count = Some(count);
self
}
pub fn handles(&mut self, handles: Vec<String>) -> &mut Self {
self.handles = Some(handles);
self
}
pub fn room(&mut self, room: u64) -> &mut Self {
self.room = Some(room);
self
}
pub fn allow_unofficial(&mut self, value: bool) -> &mut Self {
self.allow_unofficial = value;
self
}
}
impl From<ContestRankingsBuilder> for Vec<(&'static str, String)> {
fn from(c: ContestRankingsBuilder) -> Self {
vec![
Some(("allowOfficial", c.allow_unofficial.to_string())),
c.from.map(|v| ("from", v.to_string())),
c.count.map(|v| ("count", v.to_string())),
c.handles.map(|v| ("handles", v.join(";"))),
c.room.map(|v| ("room", v.to_string())),
]
.into_iter()
.filter_map(|v| v)
.collect()
}
}
impl Contest {
pub async fn list(client: &Client, with_gym: bool) -> Result<Vec<Contest>> {
let v: CFResult<_> = client
.borrow()
.await
.get("https://codeforces.com/api/contest.list")
.query(&[("gym", with_gym)])
.send()
.await?
.json()
.await?;
v.into()
}
pub async fn standings(
client: &Client,
contest_id: u64,
opts: impl FnOnce(&mut ContestRankingsBuilder) -> &mut ContestRankingsBuilder,
) -> Result<(Contest, Vec<Problem>, Vec<RanklistRow>)> {
#[derive(Deserialize)]
struct Middle {
contest: Contest,
problems: Vec<Problem>,
rows: Vec<RanklistRow>,
}
let mut b = ContestRankingsBuilder::default();
opts(&mut b);
let v: CFResult<Middle> = client
.borrow()
.await
.get("https://codeforces.com/api/contest.standings")
.query(&[("contestId", contest_id)])
.query(&Vec::<(&'static str, String)>::from(b))
.send()
.await?
.json()
.await?;
let v: Middle = Result::<_>::from(v)?;
Ok((v.contest, v.problems, v.rows))
}
}
impl User {
pub async fn rating_changes(&self, client: &Client) -> Result<Vec<RatingChange>> {
Self::rating(client, &self.handle).await
}
pub async fn submissions(
&self,
client: &Client,
from: u64,
count: u64,
) -> Result<Vec<Submission>> {
Self::status(client, &self.handle, from, count).await
}
}
impl Contest {
pub async fn get_standings(
&self,
client: &Client,
opts: impl FnOnce(&mut ContestRankingsBuilder) -> &mut ContestRankingsBuilder,
) -> Result<(Vec<Problem>, Vec<RanklistRow>)> {
let (_, problems, rows) = Self::standings(client, self.id, opts).await?;
Ok((problems, rows))
}
}