commit 36e10cf8d29a86e10dae711dddef60b1ea668059
Author: Nathan Lamy <nathan.lamycharrier@gmail.com>
Date:   Thu Aug 21 13:49:30 2025 +0200

    Initial commit :)

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..007e632
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/target
+/prod
+config.toml
+Cargo.lock
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..92d1e2f
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "worker"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+reqwest = { version = "0.12", features = ["blocking", "json"] }
+scraper = "0.18"
+tokio = { version = "1", features = ["full"] }
+chrono = { version = "0.4", features = ["serde", "clock"] }
+url = "2.5.4"
+redis = { version = "0.32.3", features = ["tokio-comp"] }
+pdf-extract = "0.9.0"
+tempfile = "3.20.0"
+config = "0.15.13"
+tokio-cron-scheduler = "0.14.0"
+sha2 = "0.10.9"
+cron = "0.15.0"
diff --git a/src/api.rs b/src/api.rs
new file mode 100644
index 0000000..0c089e2
--- /dev/null
+++ b/src/api.rs
@@ -0,0 +1,92 @@
+use chrono::NaiveDateTime;
+use reqwest::{self, Client};
+use serde_json::json;
+
+use crate::configuration::{Settings, get_config};
+
+pub async fn post_colle(
+    colle: &Colle,
+    class_name: &str,
+    config: &Settings,
+) -> Result<(), Box<dyn std::error::Error>> {
+    let api_url = get_config(config, "api");
+    let api_token = get_config(config, "token");
+
+    let url = format!("{api_url}/colles");
+    let colle_json = json!({
+        "colle": &colle,
+        "className": class_name,
+    });
+
+    let response = Client::new()
+        .post(&url)
+        .json(&colle_json)
+        .header("Content-Type", "application/json")
+        .header("Accept", "application/json")
+        // Bearer token for authentication
+        .header("Authorization", format!("Bearer {api_token}"))
+        .send()
+        .await?;
+    // Check if the response is successful
+    if !response.status().is_success() {
+        eprintln!("Failed to post colle: HTTP {}", response.status(),);
+        eprint!("Response: {:?}", response.text().await?);
+        return Err("Failed to post colle".into());
+    }
+
+    Ok(())
+}
+
+pub async fn post_upcoming_colles(
+    colles: &[Colle],
+    class_name: &str,
+    config: &Settings,
+) -> Result<(), Box<dyn std::error::Error>> {
+    let api_url = get_config(config, "api");
+    let api_token = get_config(config, "token");
+
+    let url = format!("{api_url}/colles");
+    let colles_json = json!({
+        "colles": &colles,
+        "className": class_name,
+    });
+
+    let response = Client::new()
+        .post(&url)
+        .json(&colles_json)
+        .header("Content-Type", "application/json")
+        .header("Accept", "application/json")
+        // Bearer token for authentication
+        .header("Authorization", format!("Bearer {api_token}"))
+        .send()
+        .await?;
+    // Check if the response is successful
+    if !response.status().is_success() {
+        eprintln!("Failed to post upcoming colles: HTTP {}", response.status(),);
+        eprint!("Response: {:?}", response.text().await?);
+        return Err("Failed to post upcoming colles".into());
+    }
+
+    Ok(())
+}
+
+#[derive(Debug, serde::Serialize)]
+pub struct Colle {
+    pub date: NaiveDateTime,
+    pub examiner: String,
+    pub room: String,
+    pub subject: String,
+    pub student: String,
+    pub bjid: Option<String>,
+    pub bjsecret: Option<String>,
+    pub grade: Option<f32>,
+    pub content: Option<String>,
+    pub comment: Option<String>,
+    pub attachments: Option<Vec<ColleAttachment>>, // (file_url, file_name)
+}
+
+#[derive(Debug, serde::Serialize)]
+pub struct ColleAttachment {
+    pub url: String,
+    pub name: String,
+}
diff --git a/src/configuration.rs b/src/configuration.rs
new file mode 100644
index 0000000..4f37f65
--- /dev/null
+++ b/src/configuration.rs
@@ -0,0 +1,77 @@
+use config::{Config, ConfigError, File};
+use serde::Deserialize;
+use std::collections::HashMap;
+
+#[derive(Debug, Deserialize)]
+pub struct Account {
+    pub username: String,
+    pub password: String,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Settings {
+    redis: Option<HashMap<String, String>>,
+    api: Option<HashMap<String, String>>,
+    accounts: Option<HashMap<String, Account>>,
+    cron: Option<HashMap<String, Vec<String>>>,
+}
+
+pub fn load_config() -> Result<Settings, ConfigError> {
+    let settings = Config::builder()
+        .add_source(File::with_name("config"))
+        .build()?
+        .try_deserialize::<Settings>()?;
+
+    Ok(settings)
+}
+
+pub fn get_config(config: &Settings, section: &str) -> String {
+    match section {
+        "redis" => {
+            if let Some(redis_map) = &config.redis {
+                redis_map.get("url").cloned().unwrap_or_default()
+            } else {
+                println!("Redis configuration not found.");
+                String::new()
+            }
+        }
+        "api" => {
+            if let Some(api_map) = &config.api {
+                api_map.get("url").cloned().unwrap_or_default()
+            } else {
+                String::new()
+            }
+        }
+        "token" => {
+            if let Some(api_map) = &config.api {
+                api_map.get("token").cloned().unwrap_or_default()
+            } else {
+                String::new()
+            }
+        }
+        _ => String::new(),
+    }
+}
+
+pub fn get_cron(config: &Settings, section: &str) -> Vec<String> {
+    if let Some(map) = &config.cron {
+        map.get(section).cloned().unwrap_or_default()
+    } else {
+        Vec::new()
+    }
+}
+
+pub fn get_account_by_class<'a>(config: &'a Settings, class_name: &str) -> Option<&'a Account> {
+    config
+        .accounts
+        .as_ref()
+        .and_then(|accounts| accounts.get(class_name))
+}
+
+pub fn list_classes(config: &Settings) -> Vec<String> {
+    config
+        .accounts
+        .as_ref()
+        .map(|accounts| accounts.keys().cloned().collect())
+        .unwrap_or_default()
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..eec1e99
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,303 @@
+use std::{str::FromStr, sync::Arc};
+
+use crate::{
+    api::{post_colle, post_upcoming_colles},
+    configuration::{get_config, get_cron, list_classes, load_config},
+    parser::{authenticate, fetch_class_colles, fetch_colle, fetch_upcoming_colles},
+};
+use chrono::{DateTime, Utc};
+use cron::Schedule;
+use redis::AsyncCommands;
+use redis::aio::MultiplexedConnection;
+use redis::{Client, Connection, RedisError, RedisResult, TypedCommands};
+use serde::Serialize;
+use serde_json::Value;
+use tokio::sync::Mutex;
+use tokio_cron_scheduler::{Job, JobScheduler};
+mod api;
+mod configuration;
+mod parser;
+
+#[tokio::main]
+async fn main() -> redis::RedisResult<()> {
+    // Load configuration
+    let config = load_config();
+    if config.is_err() {
+        eprintln!("Failed to load configuration: {}", config.unwrap_err());
+        return Err(redis::RedisError::from((
+            redis::ErrorKind::InvalidClientConfig,
+            "Configuration loading failed",
+        )));
+    }
+    let config = config.unwrap();
+    println!("Configuration loaded successfully");
+
+    // Connect to Redis
+    let redis_url = get_config(&config, "redis");
+    let client = Client::open(redis_url)?;
+
+    // Create separate connections for pubsub and job processing
+    let mut pubsub_con = client.get_connection()?;
+    let mut job_con = client.get_connection()?;
+    let scheduler_con = client.get_multiplexed_async_connection().await.unwrap();
+    let mut pubsub = pubsub_con.as_pubsub();
+    pubsub.subscribe("jobs_queue")?;
+    println!("Connected to Redis pubsub channel 'jobs_queue'");
+
+    // Schedule cron jobs
+    schedule_cron_jobs(&config, scheduler_con).await;
+    println!("Cron jobs scheduled successfully");
+
+    loop {
+        let msg = pubsub.get_message()?;
+        let payload: String = msg.get_payload()?;
+        if let Ok(event) = serde_json::from_str::<Value>(&payload) {
+            match process_job(&event, &mut job_con, &config).await {
+                Ok(_) => {
+                    println!("Job processed successfully: {:?}", event);
+                }
+                Err(e) => {
+                    eprintln!("Error processing job: {:?}, Error: {}", event, e);
+                }
+            }
+        }
+    }
+}
+
+#[derive(Serialize)]
+struct JobMessage {
+    r#type: u8,
+    class_name: String,
+}
+
+async fn schedule_cron_jobs(config: &configuration::Settings, con: MultiplexedConnection) {
+    let scheduler = JobScheduler::new().await.unwrap();
+    let classes: Vec<String> = list_classes(config);
+    let class_colles_crons = get_cron(config, "class_colles");
+    let upcoming_colles_crons = get_cron(config, "upcoming_colles");
+
+    let con = Arc::new(Mutex::new(con));
+
+    for class_name in classes {
+        // Start job for upcoming colles
+        let message = JobMessage {
+            r#type: 2,
+            class_name: class_name.clone(),
+        };
+        for cron in &upcoming_colles_crons {
+            let job = start_job(&message, &cron, Arc::clone(&con)).await;
+            scheduler.add(job).await.unwrap();
+        }
+        println!("Scheduled job for upcoming colles: {}", class_name);
+        // Start job for class colles
+        let message = JobMessage {
+            r#type: 1,
+            class_name: class_name.clone(),
+        };
+        for cron in &class_colles_crons {
+            let job = start_job(&message, &cron, Arc::clone(&con)).await;
+            scheduler.add(job).await.unwrap();
+        }
+        println!("Scheduled job for class colles: {}", class_name);
+    }
+
+    scheduler.start().await.unwrap();
+}
+
+async fn start_job(
+    message: &JobMessage,
+    cron: &str,
+    con: Arc<Mutex<MultiplexedConnection>>,
+) -> Job {
+    let con_clone = Arc::clone(&con);
+    let payload = serde_json::to_string(message).unwrap();
+
+    // Register cron job
+    Job::new_async(&cron, move |_uuid, _l| {
+        let payload = payload.clone();
+        let con_clone = Arc::clone(&con_clone);
+        Box::pin(async move {
+            let mut conn = con_clone.lock().await;
+            let res: Result<(), RedisError> = conn.publish("jobs_queue", payload).await;
+            if res.is_err() {
+                eprintln!("Failed to publish job: {}", res.unwrap_err());
+            }
+        })
+    })
+    .unwrap()
+}
+
+async fn process_job(
+    job: &Value,
+    con: &mut Connection,
+    config: &configuration::Settings,
+) -> RedisResult<()> {
+    // Retrieve the class name from the job
+    println!("Processing job: {:?}", job);
+    let class_name = job["class_name"].as_str();
+    if class_name.is_none() {
+        eprintln!("Job does not contain a class name.");
+        return Err(redis::RedisError::from((
+            redis::ErrorKind::InvalidClientConfig,
+            "Job missing class name",
+        )));
+    }
+    let class_name = class_name.unwrap();
+
+    /*
+     * Fetch ONE colle (id and secret)
+     */
+    if job["type"] == 0 {
+        // Simulate fetching colles
+        let colle_id = job["colle_id"].as_str().unwrap_or("unknown");
+        let colle_secret = job["colle_secret"].as_str().unwrap_or("unknown");
+        println!("Fetched colle: ID={}, Secret={}", colle_id, colle_secret);
+
+        match fetch_colle(colle_id, colle_secret).await {
+            Ok(colle) => {
+                if colle.is_none() {
+                    eprintln!("No colle found for ID: {}", colle_id);
+                    return Ok(());
+                }
+                let mut colle = colle.unwrap();
+                if colle.examiner.is_empty() {
+                    colle.examiner = job["examiner_name"]
+                        .as_str()
+                        .unwrap_or("Unknown")
+                        .to_string();
+                }
+                let res = post_colle(&colle, class_name, config).await;
+                if res.is_err() {
+                    eprintln!("Failed to post colle: {}", res.unwrap_err());
+                    return Err(redis::RedisError::from((
+                        redis::ErrorKind::ResponseError,
+                        "Failed to post colle",
+                    )));
+                }
+            }
+            Err(e) => {
+                eprintln!("Failed to fetch colle {}: {}", colle_id, e);
+            }
+        }
+    } else {
+        // Authenticate
+        let session = authenticate(class_name, &mut *con, config).await;
+        if session.is_err() {
+            eprintln!("Failed to authenticate: {}", session.unwrap_err());
+            return Err(redis::RedisError::from((
+                redis::ErrorKind::AuthenticationFailed,
+                "Authentication failed",
+            )));
+        }
+        let session = session.unwrap();
+        println!("Authenticated successfully: {}", session);
+
+        /*
+         * Fetch class colles (class name and optionally date)
+         */
+        if job["type"] == 1 {
+            let last_hash_key = format!("class_colles_hash_{}", class_name);
+            let last_hash = get_last_hash(con, &last_hash_key);
+
+            // Fetch class colles
+            match fetch_class_colles(&session, job["date"].as_str().or(None), &last_hash).await {
+                Ok((colles, hash)) => {
+                    set_last_hash(con, &last_hash_key, &hash)?;
+                    // Add each colle to Redis queue pubsub
+                    for (colle_id, colle_secret, examiner_name) in colles {
+                        let colle_job = serde_json::json!({
+                            "type": 0,
+                            "colle_id": colle_id,
+                            "colle_secret": colle_secret,
+                            "class_name": class_name,
+                            "examiner_name": examiner_name,
+                        });
+                        let colle_job_str =
+                            serde_json::to_string(&colle_job).unwrap_or_else(|_| "{}".to_string());
+
+                        // Publish the colle job to the Redis channel
+                        con.publish("jobs_queue", &colle_job_str)?;
+                        println!("Published colle job: {}", &colle_job_str);
+                    }
+
+                    // Set the last sync date in Redis
+                    let last_sync_key = format!("last_sync_{}", class_name);
+                    con.set(&last_sync_key, Utc::now().to_rfc3339().as_str())?;
+
+                    let class_colles_crons = get_cron(config, "class_colles");
+                    let healthy_until = next_run_any(&class_colles_crons).unwrap_or_default();
+                    let healhy_until_key = format!("healthy_until_{}", class_name);
+                    con.set(&healhy_until_key, healthy_until.to_rfc3339().as_str())?;
+                }
+                Err(e) => {
+                    eprintln!("Failed to fetch class colles: {}", e);
+                }
+            }
+        /*
+         * Fetch upcoming colles (class name)
+         */
+        } else if job["type"] == 2 {
+            // Retrieve the last hash from Redis and fetch upcoming colles
+            let last_hash_key = format!("upcoming_colles_hash_{}", class_name);
+            let last_hash = get_last_hash(con, &last_hash_key);
+
+            let (colles, hash) = fetch_upcoming_colles(&session, &last_hash).await;
+            set_last_hash(con, &last_hash_key, &hash)?;
+
+            if colles.is_empty() {
+                return Ok(());
+            }
+            let res = post_upcoming_colles(&colles, class_name, config).await;
+            if res.is_err() {
+                eprintln!("Failed to post upcoming colles: {}", res.unwrap_err());
+                return Err(redis::RedisError::from((
+                    redis::ErrorKind::ResponseError,
+                    "Failed to post upcoming colles",
+                )));
+            }
+            println!("Posted upcoming colles successfully.");
+        /*
+         * Handle unknown job types
+         * This is a catch-all for any job types that are not recognized.
+         */
+        } else {
+            eprintln!("Unknown job type: {}", job["type"]);
+        }
+    }
+
+    Ok(())
+}
+
+fn get_last_hash(con: &mut Connection, key: &str) -> String {
+    let last_hash = con.get(key);
+    // If the last hash is not found, use an empty string
+    let last_hash = match last_hash {
+        Ok(hash) => hash.unwrap_or_else(|| String::new()),
+        Err(e) => {
+            eprintln!("Failed to get last hash: {}", e);
+            String::new()
+        }
+    };
+    last_hash
+}
+
+fn set_last_hash(con: &mut Connection, key: &str, hash: &str) -> RedisResult<()> {
+    con.set(key, hash)?;
+    Ok(())
+}
+
+fn next_run_any<I>(expressions: I) -> Option<DateTime<Utc>>
+where
+    I: IntoIterator,
+    I::Item: AsRef<str>,
+{
+    let now = Utc::now();
+
+    expressions
+        .into_iter()
+        .filter_map(|expr| {
+            let schedule = Schedule::from_str(expr.as_ref()).ok()?;
+            schedule.after(&now).next()
+        })
+        .min()
+}
diff --git a/src/parser/auth.rs b/src/parser/auth.rs
new file mode 100644
index 0000000..43ee4de
--- /dev/null
+++ b/src/parser/auth.rs
@@ -0,0 +1,169 @@
+/**
+ * Authenticate on BJColle.
+ */
+use crate::{configuration::{get_account_by_class, Settings}};
+use redis::{Commands, Connection, RedisError, RedisResult};
+use reqwest::{self, header::HeaderValue, redirect::Policy};
+
+pub async fn request_session() -> Result<String, Box<dyn std::error::Error>> {
+    let url = "https://bjcolle.fr/acces.php";
+
+    let response = reqwest::get(url).await?;
+    // Get response headers
+    let session_id = response.headers().get("set-cookie");
+    if !session_id.is_some() {
+        return Err("Failed to get session ID".into());
+    }
+    Ok(session_id.unwrap().to_str()?.to_string())
+}
+
+pub async fn login(
+    username: &str,
+    password: &str,
+    session_id: &str,
+) -> Result<String, Box<dyn std::error::Error>> {
+    let url = "https://bjcolle.fr/acces.php";
+
+    let client = reqwest::Client::builder()
+        .redirect(Policy::none())
+        .build()?;
+    let response = client
+        .post(url)
+        .header("Cookie", session_id)
+        .form(&[
+            ("USERNAME_ACCES", username),
+            ("PASSWORD_ACCES", password),
+            ("SOUVENIR", "on"),
+            ("valider_ident", "Valider"),
+        ])
+        .send()
+        .await?;
+
+    // Get session ID from cookies
+    let session_id: Vec<String> = response
+        .headers()
+        .get_all("set-cookie")
+        .iter()
+        .filter_map(|value: &HeaderValue| value.to_str().ok())
+        .filter_map(|s| {
+            // Get the part before the first semicolon
+            let first_part = s.split(';').next()?.trim();
+
+            // Only keep "bjid" or "bjp"
+            if first_part.starts_with("bjid=") || first_part.starts_with("bjp=") {
+                Some(first_part.to_string())
+            } else {
+                None
+            }
+        })
+        .collect();
+
+    if session_id.is_empty() {
+        return Err("Failed to get session ID".into());
+    }
+
+    Ok(session_id.join("; "))
+}
+
+pub async fn refresh_session(cookie: &str) -> Result<String, Box<dyn std::error::Error>> {
+    let url = "https://bjcolle.fr/acces_cookies.php";
+
+    let client = reqwest::Client::builder()
+        .redirect(Policy::none())
+        .build()?;
+    let response = client.get(url).header("Cookie", cookie).send().await?;
+
+    // Get session ID from cookies
+    let new_session_id = response.headers().get("set-cookie");
+    if !new_session_id.is_some() {
+        return Err("Failed to refresh session ID".into());
+    }
+
+    Ok(new_session_id.unwrap().to_str()?.to_string())
+}
+
+pub async fn authenticate(
+    class_name: &str,
+    con: &mut Connection,
+    config: &Settings,
+) -> RedisResult<String> {
+    // Try reusing an existing session if available
+    let session_key = format!("session_{}", class_name);
+    let session_duration = 900; // 15 minutes
+    let session_id: RedisResult<Option<String>> = con.get(&session_key);
+    match session_id? {
+        Some(id) => {
+            println!("Reusing existing session: {}", id);
+            return Ok(id);
+        }
+        None => {
+            println!("No existing session found for class: {}", class_name);
+        }
+    }
+
+    // Request a session ID (valid for 15 minutes)
+    let session = request_session().await;
+    if let Err(err) = session {
+        eprintln!("Failed to request session: {}", err);
+        return Err(redis::RedisError::from((
+            redis::ErrorKind::AuthenticationFailed,
+            "Session request failed",
+        )));
+    }
+    let session_id = session.unwrap();
+    println!("Session requested: {}", session_id);
+
+    // Try to get cached session ID
+    let cookie_key = format!("auth_cookie_{}", class_name);
+    let cached_session: RedisResult<Option<String>> = con.get(&cookie_key);
+
+    match cached_session? {
+        Some(cookie) => {
+            // Attempt to refresh session
+            let refreshed = refresh_session(&cookie).await;
+            if let Err(err) = refreshed {
+                eprintln!("Failed to refresh session: {}", err);
+                // Remove the cached cookie if refresh fails and retry authentication
+                let _: Result<(), RedisError> = con.del(&cookie_key);
+                return Box::pin(authenticate(class_name, con, config)).await;
+            }
+
+            let new_session_id = refreshed.unwrap();
+            println!("Session refreshed: {}", new_session_id);
+
+            // Set the new session id (for 15 minutes)
+            let _: Result<(), RedisError> = con.set_ex(&session_key, &new_session_id, session_duration);
+            Ok(new_session_id)
+        }
+
+        None => {
+            // No cookie found, authenticate with credentials
+            let account = get_account_by_class(&config, class_name);
+            if account.is_none() {
+                eprintln!("No account found for class: {}", class_name);
+                return Err(redis::RedisError::from((
+                    redis::ErrorKind::AuthenticationFailed,
+                    "No account found",
+                )));
+            }
+            let account = account.unwrap();
+            println!("Using account: {}", account.username);
+
+            let login_result = login(&account.username, &account.password, &session_id).await;
+            if let Err(err) = login_result {
+                eprintln!("Failed to login: {}", err);
+                return Err(redis::RedisError::from((
+                    redis::ErrorKind::AuthenticationFailed,
+                    "Login failed",
+                )));
+            }
+            let cookie = login_result.unwrap();
+            println!("Login successful: {}", cookie);
+
+            let _: Result<(), RedisError> = con.set(&cookie_key, cookie.clone());
+            // Set the new session id (for 15 minutes)
+            let _: Result<(), RedisError> = con.set_ex(&session_key, &session_id, session_duration);
+            Ok(session_id)
+        }
+    }
+}
diff --git a/src/parser/colles/class.rs b/src/parser/colles/class.rs
new file mode 100644
index 0000000..3a9b965
--- /dev/null
+++ b/src/parser/colles/class.rs
@@ -0,0 +1,75 @@
+/**
+ * List class colles from BJColle (list ID and secret).
+ * URL: https://bjcolle.fr/students_dashboard_class.php
+ */
+use reqwest::{self, Client};
+use scraper::{Html, Selector};
+use std::collections::HashMap;
+use url::Url;
+
+use crate::parser::utils::hash_text;
+
+pub async fn fetch(
+    session: &str,
+    date: Option<&str>,
+    last_hash: &str,
+) -> Result<(Vec<(String, String, String)>, String), Box<dyn std::error::Error>> {
+    let mut url = String::from("https://bjcolle.fr/students_dashboard_class.php?erasedate=1");
+    if let Some(date) = date {
+        url = format!(
+            "https://bjcolle.fr/students_dashboard_class.php?go={}",
+            date
+        );
+    }
+
+    // Retrieve page content
+    let response = Client::new()
+        .get(url)
+        .header("Cookie", session)
+        .send()
+        .await?
+        .text()
+        .await?;
+
+    // Calculate the hash of the response
+    let hash = hash_text(&response);
+    if hash == last_hash {
+        return Ok((Vec::new(), hash));
+    }
+
+    let document = Html::parse_document(&response);
+
+    // Select the table rows containing colles
+    let row_selector = Selector::parse("#Choix > a.bouton_eleve2").unwrap();
+
+    let mut colles = Vec::new();
+
+    for row in document.select(&row_selector) {
+        // Extract ID and secret from each row
+        if let Some(href) = row.value().attr("href") {
+            if let Some((colle_id, colle_secret)) = parse_colle_info(href) {
+                let rows: Vec<&str> = row.text().collect();
+                let examiner_name = rows[2].trim().to_string();
+                colles.push((colle_id, colle_secret, examiner_name));
+            } else {
+                eprintln!("Failed to parse colle info from URL: {}", href);
+            }
+        } else {
+            eprintln!("Row does not contain a valid href attribute.");
+        }
+    }
+
+    Ok((colles, hash))
+}
+
+fn parse_colle_info(raw_url: &str) -> Option<(String, String)> {
+    let full_url = format!("https://dummy.host/{}", raw_url); // must be absolute
+    let parsed = Url::parse(&full_url).ok()?;
+
+    let query: HashMap<_, _> = parsed.query_pairs().into_owned().collect();
+
+    let colle_id = query.get("colle")?.to_string();
+    let colle_secret = query.get("hgfebrgl8ri3h")?.to_string();
+
+    Some((colle_id, colle_secret))
+}
diff --git a/src/parser/colles/fetch.rs b/src/parser/colles/fetch.rs
new file mode 100644
index 0000000..ce4f55e
--- /dev/null
+++ b/src/parser/colles/fetch.rs
@@ -0,0 +1,163 @@
+/*
+    Request a colle from BJColle given its ID (and secret).
+    URL : https://bjcolle.fr/students_oral_disp.php?colle=<colle_id>&hgfebrgl8ri3h=<secret>
+*/
+
+use crate::{api::{Colle, ColleAttachment}, parser::utils};
+use reqwest;
+use scraper::{ElementRef, Html, Selector};
+
+pub async fn fetch(
+    colle_id: &str,
+    secret: &str,
+) -> Result<Option<Colle>, Box<dyn std::error::Error>> {
+    // Retrieve page content
+    let url = format!(
+        "https://bjcolle.fr/students_oral_disp.php?colle={}&hgfebrgl8ri3h={}",
+        colle_id, secret
+    );
+    let response = reqwest::get(url).await?.text().await?;
+
+    let document = Html::parse_document(&response);
+
+    let header_selector = "#envelope > header > table > tbody h2";
+    let header_selector = Selector::parse(header_selector).unwrap();
+
+    // Expect ONLY ONE header
+    let Some(header) = document.select(&header_selector).next() else {
+        // Header not found error
+        eprint!("Header not found in the document.");
+        return Ok(None);
+    };
+
+    // Use the header text to extract informations :
+    // - subject
+    // - examiner
+    // - date
+    // - room
+    // - student name
+    let header_text = header.text().collect::<Vec<_>>();
+    let (title, date, room, student) = if header_text.len() >= 4 {
+        (
+            header_text[0].trim().to_string(),
+            header_text[1].trim().to_string(),
+            header_text[2].trim().to_string(),
+            header_text[3].trim().to_string(),
+        )
+    } else {
+        // TODO: Handle the case where no header is found
+        print!("Header text does not contain enough elements.");
+        return Ok(None);
+    };
+
+    let (subject, examiner) = title
+        .split("avec")
+        .map(|s| s.trim())
+        .collect::<Vec<_>>()
+        .split_first()
+        .map(|(subject, examiner)| {
+            (
+                subject
+                    .to_string()
+                    .replace("Colle de", "")
+                    .replace("Colle d'", "")
+                    .trim()
+                    .to_string(),
+                examiner.join(" "),
+            )
+        })
+        .unwrap_or((String::new(), String::new()));
+
+    // Parse the date and room
+    let date = utils::parse_french_datetime(&date)?;
+    let room = room.replace("Salle :", "").trim().to_string();
+
+    // Parse grades and comments
+    let grade_selector = "#haut > div > input#NOTE_ELEVE";
+    let grade_selector = Selector::parse(grade_selector).unwrap();
+
+    let grade = document
+        .select(&grade_selector)
+        .next()
+        .and_then(|e| e.value().attr("value"))
+        .unwrap_or("")
+        .to_string()
+        .replace(",", ".")
+        .parse()
+        .unwrap_or(-1.0);
+
+    // Attachments
+    let attachment_selector =  Selector::parse(".bj > a.bouton_eleve").unwrap();
+    let files = document
+        .select(&attachment_selector)
+        .filter_map(|el| {
+            let href = el.value().attr("href")?.to_string();
+            let text = el.text().collect::<String>().trim().to_string();
+            Some(ColleAttachment {
+                url: href,
+                name: text,
+            })
+        })
+        .collect();
+
+    // Return a JSON object with the parsed information
+    Ok(Some(Colle {
+        date,
+        room,
+        student,
+        subject,
+        examiner,
+        bjid: Some(colle_id.to_string()),
+        bjsecret: Some(secret.to_string()),
+        grade: if grade >= 0.0 { Some(grade) } else { None },
+        content: Some(extract_section(&document, "Sujet", true)),
+        comment: Some(extract_section(&document, "Commentaire", false)),
+        attachments: Some(files),
+    }))
+}
+
+fn extract_section(document: &Html, keyword: &str, use_first_span: bool) -> String {
+    let legend_selector = Selector::parse("fieldset.bj > legend.bj2").unwrap();
+    let span_selector = Selector::parse("fieldset.bj > span").unwrap();
+
+    // Check if legend contains the keyword ("Sujet" or "Commentaire")
+    let is_match = document
+        .select(&legend_selector)
+        .any(|el| el.text().collect::<String>().contains(keyword));
+
+    if !is_match {
+        return String::new();
+    }
+
+    // Collect all matching spans
+    let spans: Vec<_> = document.select(&span_selector).collect();
+
+    let span_el = if spans.is_empty() {
+        None
+    } else if use_first_span {
+        Some(spans[0].clone())
+    } else {
+        Some(spans[spans.len() - 1].clone())
+    };
+
+    let mut results = Vec::new();
+
+    if let Some(span) = span_el {
+        // Filter children != <br>
+        let children: Vec<_> = span
+            .children()
+            .filter_map(ElementRef::wrap)
+            .filter(|el| el.value().name() != "br")
+            .collect();
+
+        if !children.is_empty() {
+            for child in children {
+                results.push(child.html());
+            }
+        } else {
+            results.push(span.html());
+        }
+    }
+
+    utils::clean_content(&results.join("<br>"))
+}
diff --git a/src/parser/colles/mod.rs b/src/parser/colles/mod.rs
new file mode 100644
index 0000000..5e01722
--- /dev/null
+++ b/src/parser/colles/mod.rs
@@ -0,0 +1,7 @@
+mod class;
+mod fetch;
+mod upcoming;
+
+pub use class::fetch as fetch_class_colles;
+pub use fetch::fetch as fetch_colle;
+pub use upcoming::fetch as fetch_upcoming_colles;
diff --git a/src/parser/colles/upcoming.rs b/src/parser/colles/upcoming.rs
new file mode 100644
index 0000000..5652034
--- /dev/null
+++ b/src/parser/colles/upcoming.rs
@@ -0,0 +1,191 @@
+use crate::{
+    api::Colle,
+    parser::utils::{hash_text, parse_french_date, with_time},
+};
+use chrono::{Datelike, NaiveDate};
+use reqwest::Client;
+use std::{collections::HashMap, io::Write};
+use tempfile::NamedTempFile;
+
+// Splits a vector of strings into a HashMap based on dates.
+// The keys are the dates, and the values are vectors of strings containing the lines after that
+fn split_dates(text: Vec<&str>) -> HashMap<NaiveDate, Vec<String>> {
+    // Get the current year
+    let current_year = chrono::Utc::now().year();
+    let mut result = HashMap::new();
+
+    let mut content = Vec::new();
+    for line in text {
+        // Check if the line contains a year
+        if line.contains(&current_year.to_string()) {
+            let date = parse_french_date(line);
+            if date.is_ok() {
+                if !content.is_empty() {
+                    result.insert(date.unwrap(), content.clone());
+                    content.clear();
+                }
+            } else {
+                // If parsing failed, just continue
+                eprintln!("Failed to parse date from line: {}", line);
+            }
+        } else {
+            content.push(line.to_string());
+        }
+    }
+    // Return the result as a vector of strings
+    result
+}
+
+// Check if the line starts with a time format (e.g., "16h20")
+fn is_time(line: &str) -> bool {
+    let trimmed = line.trim();
+
+    if let Some(h_pos) = trimmed.find('h') {
+        // Check if there are only digits before 'h'
+        let before_h = &trimmed[..h_pos];
+        if !before_h.is_empty() && before_h.chars().all(|c| c.is_digit(10)) {
+            // Check that there are exactly 2 digits after 'h'
+            let after_h = &trimmed[h_pos + 1..];
+            return after_h.len() >= 2 && after_h.chars().take(2).all(|c| c.is_digit(10));
+        }
+    }
+
+    false
+}
+
+// Check if the line starts with a last name (uppercase first word)
+fn is_name(line: &str) -> bool {
+    let trimmed = line.trim();
+    if let Some(first_space) = trimmed.find(' ') {
+        let first_word = &trimmed[..first_space];
+        return first_word.chars().all(|c| c.is_uppercase() || c == '-');
+    }
+    false
+}
+
+// Extract all names from a line (split on "/" and trim each part)
+fn extract_names(line: &str) -> Vec<String> {
+    line.split('/')
+        .map(|s| s.trim().to_string())
+        .filter(|s| !s.is_empty())
+        .collect()
+}
+
+// Parse header (time, teacher, room)
+fn parse_header(line: &str) -> (String, String, String) {
+    // First 5 characters are the time
+    let time = line.get(0..5).unwrap_or("").to_string();
+    // Split the rest on "Salle :"
+    let parts: Vec<&str> = line[5..].split("Salle :").collect();
+    let teacher = parts.get(0).map_or("", |s| s.trim()).to_string();
+    let room = parts.get(1).map_or("", |s| s.trim()).to_string();
+    (time, teacher, room)
+}
+
+// Parse the PDF text into a vector of Upcoming colles
+fn parse_upcoming(text: Vec<&str>) -> Vec<Colle> {
+    let dates = split_dates(text);
+    let mut result = Vec::new();
+
+    for (date, lines) in dates {
+        let mut current_header = (String::new(), String::new(), String::new());
+        let mut current_subject = String::new();
+
+        for line in lines {
+            let trimmed = line.trim();
+            if trimmed.is_empty() {
+                continue;
+            }
+
+            if is_time(trimmed) {
+                current_header = parse_header(trimmed);
+            } else if is_name(trimmed) {
+                let names = extract_names(trimmed);
+                // Pre-allocate and extend instead of pushing individual items
+                let entries: Vec<Colle> = names
+                    .into_iter()
+                    .map(|name| Colle {
+                        date: with_time(date, &current_header.0).unwrap_or_default(),
+                        examiner: current_header.1.clone(),
+                        room: current_header.2.clone(),
+                        subject: current_subject.clone(),
+                        student: name,
+                        bjid: None,
+                        bjsecret: None,
+                        grade: None,
+                        content: None,
+                        comment: None,
+                        attachments: None,
+                    })
+                    .collect();
+                result.extend(entries);
+            } else {
+                current_subject = trimmed.to_string();
+            }
+        }
+    }
+
+    result
+}
+
+pub async fn fetch(session: &str, last_hash: &str) -> (Vec<Colle>, String) {
+    let url = "https://bjcolle.fr/oral_choice_week_billboard_cdt.php";
+    // Start date is 3 days ago, end date is 14 days from now (2 weeks)
+    let start_date = chrono::Utc::now().date_naive() - chrono::Duration::days(3);
+    let end_date = chrono::Utc::now().date_naive() + chrono::Duration::days(14);
+
+    let response = Client::new()
+        .post(url)
+        .header("Cookie", session)
+        .form(&[
+            ("datepicker_1", &start_date.format("%d/%m/%Y").to_string()),
+            ("datepicker_2", &end_date.format("%d/%m/%Y").to_string()),
+            ("VALIDER_SEMAINE", &"Valider".to_string()),
+        ])
+        .send()
+        .await
+        .expect("Failed to send request");
+
+    if !response.status().is_success() {
+        eprintln!(
+            "Failed to fetch upcoming colles: HTTP {}",
+            response.status()
+        );
+        return (Vec::new(), String::new());
+    }
+
+    // Save PDF to a temporary file
+    let body = response
+        .bytes()
+        .await
+        .expect("Failed to read response body");
+    let mut tmpfile = NamedTempFile::new().expect("Failed to create temp file");
+    tmpfile
+        .write_all(&body)
+        .expect("Failed to write PDF to temp file");
+
+    // Extract text using pdf_extract
+    let pdf_text = pdf_extract::extract_text(tmpfile.path()).expect("Failed to extract PDF text");
+    // Calculate the hash of the PDF file
+    let hash = hash_text(&pdf_text);
+    if hash == last_hash || pdf_text.contains("Aucune colle") {
+        return (Vec::new(), hash);
+    }
+
+    // Split the text into lines and filter out empty lines
+    let lines: Vec<&str> = pdf_text
+        .lines()
+        .filter(|line| !line.trim().is_empty())
+        .collect();
+    // Remove the first line
+    let lines: Vec<&str> = lines.into_iter().skip(1).collect();
+
+    // Parse the lines into Upcoming structs
+    let upcoming_colles = parse_upcoming(lines);
+    if upcoming_colles.is_empty() {
+        eprintln!("No upcoming colles found.");
+    } else {
+        println!("Found {} upcoming colles.", upcoming_colles.len());
+    }
+    (upcoming_colles, hash)
+}
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
new file mode 100644
index 0000000..771752d
--- /dev/null
+++ b/src/parser/mod.rs
@@ -0,0 +1,9 @@
+mod auth;
+mod utils;
+mod colles;
+
+pub use colles::fetch_class_colles;
+pub use colles::fetch_colle;
+pub use colles::fetch_upcoming_colles;
+
+pub use auth::authenticate;
diff --git a/src/parser/utils.rs b/src/parser/utils.rs
new file mode 100644
index 0000000..2343d62
--- /dev/null
+++ b/src/parser/utils.rs
@@ -0,0 +1,101 @@
+use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
+use sha2::{Digest, Sha256};
+use std::collections::HashMap;
+use std::error::Error;
+
+pub fn parse_french_date(french_date: &str) -> Result<NaiveDate, Box<dyn Error>> {
+    let months: HashMap<&str, u32> = [
+        ("janvier", 1),
+        ("février", 2),
+        ("mars", 3),
+        ("avril", 4),
+        ("mai", 5),
+        ("juin", 6),
+        ("juillet", 7),
+        ("août", 8),
+        ("septembre", 9),
+        ("octobre", 10),
+        ("novembre", 11),
+        ("décembre", 12),
+    ]
+    .iter()
+    .cloned()
+    .collect();
+
+    // Split by spaces
+    let parts: Vec<&str> = french_date.split_whitespace().collect();
+    if parts.len() < 4 {
+        return Err("Date string too short".into());
+    }
+
+    // parts layout: ["vendredi", "6", "juin", "2025"]
+    // Extract day (digits only)
+    let day: u32 = parts[1]
+        .chars()
+        .filter(|c| c.is_digit(10))
+        .collect::<String>()
+        .parse()?;
+
+    // Month number
+    let month = months
+        .get(parts[2])
+        .ok_or_else(|| format!("Unknown month: {}", parts[2]))?;
+
+    // Year
+    let year: i32 = parts[3].parse()?;
+
+    let date = NaiveDate::from_ymd_opt(year, *month, day).ok_or("Invalid date components")?;
+
+    Ok(date)
+}
+
+pub fn parse_french_datetime(french_date: &str) -> Result<NaiveDateTime, Box<dyn Error>> {
+    let parts: Vec<&str> = french_date.split_whitespace().collect();
+    if parts.len() < 8 {
+        return Err("DateTime string too short".into());
+    }
+
+    // Parse the date part using the existing function
+    let date_part = parts[0..4].join(" ");
+    let date = parse_french_date(&date_part)?;
+
+    // parts layout: ["vendredi", "6", "juin", "2025", "à", "19", "h", "00"]
+    // Extract hour and minute
+    let hour: u32 = parts[5].parse()?;
+    let minute: u32 = parts[7].parse()?;
+
+    let datetime = date
+        .and_hms_opt(hour, minute, 0)
+        .ok_or("Invalid time components")?;
+
+    Ok(datetime)
+}
+
+pub fn clean_content(content: &str) -> String {
+    // Remove HTML tags and decode HTML entities
+    let cleaned = content
+        .replace("<p>", "")
+        .replace("</p>", "")
+        .replace("&nbsp;", " ")
+        .trim()
+        .to_string();
+    cleaned
+}
+
+pub fn with_time(date: NaiveDate, time_str: &str) -> Result<NaiveDateTime, String> {
+    // Replace 'h' with ':' to make parsing easier
+    let clean_time = time_str.replace('h', ":");
+
+    // Parse the time string into NaiveTime
+    match NaiveTime::parse_from_str(&clean_time, "%H:%M") {
+        Ok(time) => Ok(date.and_time(time)),
+        Err(_) => Err(format!("Invalid time format: {}", time_str)),
+    }
+}
+
+pub fn hash_text(text: &str) -> String {
+    let mut hasher = Sha256::new();
+    hasher.update(text.as_bytes());
+    let result = hasher.finalize();
+    format!("{:x}", result)
+}