1use std::sync::{Arc, OnceLock};
  2
  3use axum::{
  4    Extension, Json, Router,
  5    extract::{self, Query},
  6    routing::get,
  7};
  8use chrono::{NaiveDateTime, SecondsFormat};
  9use serde::{Deserialize, Serialize};
 10
 11use crate::db::ContributorSelector;
 12use crate::{AppState, Result};
 13
 14pub fn router() -> Router {
 15    Router::new()
 16        .route("/contributors", get(get_contributors).post(add_contributor))
 17        .route("/contributor", get(check_is_contributor))
 18}
 19
 20async fn get_contributors(Extension(app): Extension<Arc<AppState>>) -> Result<Json<Vec<String>>> {
 21    Ok(Json(app.db.get_contributors().await?))
 22}
 23
 24#[derive(Debug, Deserialize)]
 25struct CheckIsContributorParams {
 26    github_user_id: Option<i32>,
 27    github_login: Option<String>,
 28}
 29
 30impl CheckIsContributorParams {
 31    fn into_contributor_selector(self) -> Result<ContributorSelector> {
 32        if let Some(github_user_id) = self.github_user_id {
 33            return Ok(ContributorSelector::GitHubUserId { github_user_id });
 34        }
 35
 36        if let Some(github_login) = self.github_login {
 37            return Ok(ContributorSelector::GitHubLogin { github_login });
 38        }
 39
 40        Err(anyhow::anyhow!(
 41            "must be one of `github_user_id` or `github_login`."
 42        ))?
 43    }
 44}
 45
 46#[derive(Debug, Serialize)]
 47struct CheckIsContributorResponse {
 48    signed_at: Option<String>,
 49}
 50
 51async fn check_is_contributor(
 52    Extension(app): Extension<Arc<AppState>>,
 53    Query(params): Query<CheckIsContributorParams>,
 54) -> Result<Json<CheckIsContributorResponse>> {
 55    let params = params.into_contributor_selector()?;
 56
 57    if RenovateBot::is_renovate_bot(&params) {
 58        return Ok(Json(CheckIsContributorResponse {
 59            signed_at: Some(
 60                RenovateBot::created_at()
 61                    .and_utc()
 62                    .to_rfc3339_opts(SecondsFormat::Millis, true),
 63            ),
 64        }));
 65    }
 66
 67    Ok(Json(CheckIsContributorResponse {
 68        signed_at: app
 69            .db
 70            .get_contributor_sign_timestamp(&params)
 71            .await?
 72            .map(|ts| ts.and_utc().to_rfc3339_opts(SecondsFormat::Millis, true)),
 73    }))
 74}
 75
 76/// The Renovate bot GitHub user (`renovate[bot]`).
 77///
 78/// https://api.github.com/users/renovate[bot]
 79struct RenovateBot;
 80
 81impl RenovateBot {
 82    const LOGIN: &'static str = "renovate[bot]";
 83    const USER_ID: i32 = 29139614;
 84
 85    /// Returns the `created_at` timestamp for the Renovate bot user.
 86    fn created_at() -> &'static NaiveDateTime {
 87        static CREATED_AT: OnceLock<NaiveDateTime> = OnceLock::new();
 88        CREATED_AT.get_or_init(|| {
 89            chrono::DateTime::parse_from_rfc3339("2017-06-02T07:04:12Z")
 90                .expect("failed to parse 'created_at' for 'renovate[bot]'")
 91                .naive_utc()
 92        })
 93    }
 94
 95    /// Returns whether the given contributor selector corresponds to the Renovate bot user.
 96    fn is_renovate_bot(contributor: &ContributorSelector) -> bool {
 97        match contributor {
 98            ContributorSelector::GitHubLogin { github_login } => github_login == Self::LOGIN,
 99            ContributorSelector::GitHubUserId { github_user_id } => {
100                github_user_id == &Self::USER_ID
101            }
102        }
103    }
104}
105
106#[derive(Debug, Deserialize)]
107struct AddContributorBody {
108    github_user_id: i32,
109    github_login: String,
110    github_email: Option<String>,
111    github_name: Option<String>,
112    github_user_created_at: chrono::DateTime<chrono::Utc>,
113}
114
115async fn add_contributor(
116    Extension(app): Extension<Arc<AppState>>,
117    extract::Json(params): extract::Json<AddContributorBody>,
118) -> Result<()> {
119    let initial_channel_id = app.config.auto_join_channel_id;
120    app.db
121        .add_contributor(
122            &params.github_login,
123            params.github_user_id,
124            params.github_email.as_deref(),
125            params.github_name.as_deref(),
126            params.github_user_created_at,
127            initial_channel_id,
128        )
129        .await
130}