Enhance application configuration and functionality

- Updated `.env` file to include `DB_MAX_CONNECTIONS` and `ENVIRONMENT` variables.
- Modified `Cargo.toml` to add `thiserror` and `time` dependencies, and updated `sqlx` features.
- Refactored `main.rs` to implement periodic tasks for checking future shifts and printing the current hospital.
- Expanded routing in `routes.rs` to include a new endpoint for current hospital status.
- Improved database initialization in `init.rs` to conditionally drop tables based on the environment.
- Enhanced error handling in database operations and added logging for better traceability.
- Updated hospital management logic in `hospital.rs` to fetch and store shifts with improved timestamp logging.

.env

@@ -4,3 +4,6 @@ PORT=3000
 
 # DB
 DATABASE_URL=postgres://hospitalapi:NVtqiNsQq2t7Lss@kn0x.tech/hospitalapi
+DB_MAX_CONNECTIONS=5
+
+ENVIRONMENT=production

Cargo.toml

@@ -9,6 +9,8 @@ tokio = { version = "1", features = ["full"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 dotenvy = "0.15.7"
-sqlx = { version = "0.8.2", features = ["runtime-tokio-native-tls", "postgres"] }
+sqlx = { version = "0.8.2", features = ["runtime-tokio-native-tls", "postgres", "time"] }
 chrono = "0.4.38"
 chrono-tz = "0.10.0"
+thiserror = "1.0"
+time = "0.3"

src/db/init.rs

@@ -1,6 +1,18 @@
 use sqlx::PgPool;
 use serde::{Deserialize, Serialize};
-use std::fs;
+use std::{fs, env};
+use thiserror::Error;
+use crate::utilities::hospital;
+
+#[derive(Error, Debug)]
+pub enum InitError {
+    #[error("Database error: {0}")]
+    Database(#[from] sqlx::Error),
+    #[error("File error: {0}")]
+    File(#[from] std::io::Error),
+    #[error("JSON parsing error: {0}")]
+    Json(#[from] serde_json::Error),
+}
 
 #[derive(Serialize, Deserialize)]
 struct HospitalData {
@@ -15,15 +27,17 @@ struct Hospital {
     phone: String,
 }
 
-pub async fn initiate_database(pool: &PgPool) -> Result<(), sqlx::Error> {
+pub async fn initiate_database(pool: &PgPool) -> Result<(), InitError> {
-    // Drop the hospitals table for testing
+    // Only drop tables in development environment
-    sqlx::query("DROP TABLE IF EXISTS shifts;")
+    if env::var("ENVIRONMENT").unwrap_or_else(|_| "development".to_string()) == "development" {
-        .execute(pool)
+        sqlx::query("DROP TABLE IF EXISTS shifts;")
-        .await?;
+            .execute(pool)
+            .await?;
 
-    sqlx::query("DROP TABLE IF EXISTS hospitals;")
+        sqlx::query("DROP TABLE IF EXISTS hospitals;")
-        .execute(pool)
+            .execute(pool)
-        .await?;
+            .await?;
+    }
 
     if !table_exists(pool).await? {
         println!("Initializing database...");
@@ -35,6 +49,10 @@ pub async fn initiate_database(pool: &PgPool) -> Result<(), sqlx::Error> {
         create_shifts_table(pool).await?;
         
         println!("Database initialization completed successfully");
+        
+        println!("Generating hospital schedule...");
+        let pool_arc = std::sync::Arc::new(pool.clone());
+        hospital::create_hospital_list(pool_arc).await.map_err(|e| InitError::Database(e))?;
     }
     
     Ok(())
@@ -56,7 +74,7 @@ async fn table_exists(pool: &PgPool) -> Result<bool, sqlx::Error> {
     Ok(exists)
 }
 
-async fn create_hospital_table(pool: &PgPool) -> Result<(), sqlx::Error> {
+async fn create_hospital_table(pool: &PgPool) -> Result<(), InitError> {
     // Create the hospitals table if it doesn't exist
     sqlx::query(
         r#"
@@ -64,7 +82,9 @@ async fn create_hospital_table(pool: &PgPool) -> Result<(), sqlx::Error> {
             id SERIAL PRIMARY KEY,
             name VARCHAR(255) NOT NULL,
             address VARCHAR(255) NOT NULL,
-            phone VARCHAR(20) NOT NULL
+            phone VARCHAR(20) NOT NULL,
+            created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
         )
         "#,
     )
@@ -79,10 +99,8 @@ async fn create_hospital_table(pool: &PgPool) -> Result<(), sqlx::Error> {
     // Only insert default hospitals if the table is empty
     if count == 0 {
         // Read and parse the hospital.json file
-        let data = fs::read_to_string("hospital.json")
+        let data = fs::read_to_string("hospital.json")?;
-            .expect("Unable to read hospital.json");
+        let hospital_data: HospitalData = serde_json::from_str(&data)?;
-        let hospital_data: HospitalData = serde_json::from_str(&data)
-            .expect("Unable to parse hospital.json");
 
         // Insert each hospital from the JSON file
         for hospital in hospital_data.hospitals {
@@ -104,7 +122,7 @@ async fn create_hospital_table(pool: &PgPool) -> Result<(), sqlx::Error> {
     Ok(())
 }
 
-async fn create_shifts_table(pool: &PgPool) -> Result<(), sqlx::Error> {
+async fn create_shifts_table(pool: &PgPool) -> Result<(), InitError> {
     // Create the shifts table if it doesn't exist
     sqlx::query("CREATE EXTENSION IF NOT EXISTS btree_gist")
         .execute(pool)
@@ -117,7 +135,6 @@ async fn create_shifts_table(pool: &PgPool) -> Result<(), sqlx::Error> {
             hospital_id INTEGER NOT NULL REFERENCES hospitals(id),
             start_time TIMESTAMP WITH TIME ZONE NOT NULL,
             end_time TIMESTAMP WITH TIME ZONE NOT NULL,
-            created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
             CONSTRAINT no_overlapping_shifts EXCLUDE USING gist (
                 tstzrange(start_time, end_time) WITH &&
             )

src/db/mod.rs

@@ -1,27 +1,43 @@
 use sqlx::postgres::PgPoolOptions;
 use sqlx::PgPool;
 use std::{env, sync::Arc};
+use thiserror::Error;
 
 mod init;
 pub use init::initiate_database;
 
+#[derive(Error, Debug)]
+pub enum DatabaseError {
+    #[error("Database URL not found in environment")]
+    MissingDatabaseUrl,
+    #[error("Failed to create connection pool: {0}")]
+    PoolCreationError(#[from] sqlx::Error),
+    #[error("Database initialization failed: {0}")]
+    InitializationError(String),
+}
+
 // initialize and return an Arc wrapped PgPool instance
-pub async fn create_pool() -> Arc<PgPool> {
+pub async fn create_pool() -> Result<Arc<PgPool>, DatabaseError> {
     // load environments variables from `.env` file
-    let database_url: String = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
+    let database_url = env::var("DATABASE_URL").map_err(|_| DatabaseError::MissingDatabaseUrl)?;
+    
+    // Get configuration from environment or use defaults
+    let max_connections = env::var("DB_MAX_CONNECTIONS")
+        .ok()
+        .and_then(|v| v.parse().ok())
+        .unwrap_or(5);
 
     // create postgres connection pool
     let pool = PgPoolOptions::new()
-        .max_connections(5)
+        .max_connections(max_connections)
         .connect(&database_url)
         .await
-        .expect("Failed to create connection pool");
+        .map_err(DatabaseError::PoolCreationError)?;
 
     // Initialize database tables
-    if let Err(e) = initiate_database(&pool).await {
+    initiate_database(&pool)
-        eprintln!("Error initializing database: {}", e);
+        .await
-        panic!("Database initialization failed");
+        .map_err(|e| DatabaseError::InitializationError(e.to_string()))?;
-    }
 
-    Arc::new(pool)
+    Ok(Arc::new(pool))
 } 

src/handlers/current_hospital.rs

@@ -0,0 +1,79 @@
+use axum::{
+    extract::State,
+    Json,
+};
+use serde::Serialize;
+use std::sync::Arc;
+use sqlx::PgPool;
+use chrono::Local;
+use time::OffsetDateTime;
+
+#[derive(Serialize)]
+pub struct CurrentHospital {
+    id: i32,
+    name: String,
+    start_time: String,
+    end_time: String,
+}
+
+#[derive(Serialize)]
+pub struct HospitalResponse {
+    success: bool,
+    hospital: Option<CurrentHospital>,
+    message: String,
+}
+
+pub async fn current_hospital_handler(
+    State(pool): State<Arc<PgPool>>,
+) -> Json<HospitalResponse> {
+    // Get the current time
+    let now = Local::now();
+    
+    // Convert chrono DateTime to time OffsetDateTime for SQLx
+    let now_offset = OffsetDateTime::from_unix_timestamp(now.timestamp())
+        .expect("Failed to convert to OffsetDateTime");
+    
+    // Get the current hospital on duty
+    let result = sqlx::query!(
+        r#"
+        SELECT h.id, h.name, s.start_time, s.end_time
+        FROM hospitals h
+        JOIN shifts s ON h.id = s.hospital_id
+        WHERE s.start_time <= $1 AND s.end_time > $1
+        ORDER BY s.end_time ASC
+        LIMIT 1
+        "#,
+        now_offset
+    )
+    .fetch_optional(&*pool)
+    .await;
+    
+    match result {
+        Ok(Some(hospital)) => {
+            Json(HospitalResponse {
+                success: true,
+                hospital: Some(CurrentHospital {
+                    id: hospital.id,
+                    name: hospital.name,
+                    start_time: hospital.start_time.to_string(),
+                    end_time: hospital.end_time.to_string(),
+                }),
+                message: "Current hospital retrieved successfully".to_string(),
+            })
+        },
+        Ok(None) => {
+            Json(HospitalResponse {
+                success: false,
+                hospital: None,
+                message: "No hospital currently on duty".to_string(),
+            })
+        },
+        Err(e) => {
+            Json(HospitalResponse {
+                success: false,
+                hospital: None,
+                message: format!("Error retrieving current hospital: {}", e),
+            })
+        }
+    }
+} 

src/handlers/mod.rs

@@ -0,0 +1,2 @@
+pub mod root;
+pub mod current_hospital; 

src/main.rs

@@ -1,19 +1,24 @@
-use std::{env, net::SocketAddrV4};
+use std::{env, net::SocketAddrV4, time::Duration as StdDuration};
 use dotenvy::dotenv;
 use utilities::hospital;
+use tokio::time;
+use chrono::Local;
 
 mod db;
 mod routes;
-mod handlers {
+mod handlers;
-    pub mod root;
-}
 mod utilities {
     pub mod hospital;
 }
 
+// Helper function to print with timestamp
+fn log_with_timestamp(message: &str) {
+    let now = Local::now();
+    println!("[{}] {}", now.format("%Y-%m-%d %H:%M:%S"), message);
+}
+
 #[tokio::main]
 async fn main() {
-
     // load environment variables from `.env` file
     dotenv().ok();
 
@@ -25,21 +30,42 @@ async fn main() {
     let addr: SocketAddrV4 = format!("{}:{}", host, port).parse::<SocketAddrV4>().expect("Invalid address");
     
     // initialize the database pool connection
-    let pool: std::sync::Arc<sqlx::Pool<sqlx::Postgres>>  = db::create_pool().await;
+    let pool: std::sync::Arc<sqlx::Pool<sqlx::Postgres>> = db::create_pool()
+        .await
+        .expect("Failed to create database pool");
     
-    // check if the programm was called with any arguments
+    // Set up a periodic task to check for future shifts every 48 hours
-    let args: Vec<String> = env::args().collect();
+    let pool_clone = pool.clone();
-    if args.len() > 1 && args[1] == "create-hospital-list" {
+    tokio::spawn(async move {
-        hospital::create_hospital_list();
+        let mut interval = time::interval(StdDuration::from_secs(48 * 60 * 60)); // 48 hours
-        return;
+        loop {
-    }
+            interval.tick().await;
+            log_with_timestamp("Periodic check for future shifts...");
+            if let Err(e) = hospital::check_and_create_future_shifts(pool_clone.clone()).await {
+                eprintln!("[{}] Error checking for future shifts: {}", 
+                    Local::now().format("%Y-%m-%d %H:%M:%S"), e);
+            }
+        }
+    });
+    
+    // Set up a task to print the current hospital every minute
+    let pool_clone = pool.clone();
+    tokio::spawn(async move {
+        let mut interval = time::interval(StdDuration::from_secs(60)); // 1 minute
+        loop {
+            interval.tick().await;
+            if let Err(e) = hospital::print_current_hospital(pool_clone.clone()).await {
+                eprintln!("[{}] Error printing current hospital: {}", 
+                    Local::now().format("%Y-%m-%d %H:%M:%S"), e);
+            }
+        }
+    });
 
     // set up the application routes
     let app: axum::Router = routes::create_router(pool);
-    println!("Server is running on https://{addr}");
+    log_with_timestamp(&format!("Server is running on https://{}", addr));
     
     // bind and serve the application
     let listener: tokio::net::TcpListener = tokio::net::TcpListener::bind(&addr).await.unwrap();
     axum::serve(listener, app).await.unwrap();
-    
 }

src/routes.rs

@@ -3,9 +3,11 @@ use std::sync::Arc;
 use sqlx::PgPool;
 
 use crate::handlers::root::root_handler;
+use crate::handlers::current_hospital::current_hospital_handler;
 
 pub fn create_router(pool: Arc<PgPool>) -> Router {
     Router::new()
         .route("/", get(root_handler))
+        .route("/current-hospital", get(current_hospital_handler))
         .with_state(pool)
 }

src/utilities/hospital.rs

@@ -1,9 +1,14 @@
 use core::panic;
 use std::io;
 use chrono::{offset::LocalResult, DateTime, Datelike, Duration, Local, TimeZone};
+use sqlx::PgPool;
+use std::sync::Arc;
+use time::OffsetDateTime;
+use std::sync::Mutex;
 
+#[derive(Debug)]
 struct Hospital {
-    id: u32,
+    id: i32,
     name: String,
 }
 
@@ -12,30 +17,43 @@ struct Hospital {
 //     to: DateTime<chrono_tz::Tz>,
 // }
 
-pub fn create_hospital_list() {
+// Helper function to print with timestamp
+fn log_with_timestamp(message: &str) {
+    let now = Local::now();
+    println!("[{}] {}", now.format("%Y-%m-%d %H:%M:%S"), message);
+}
 
-    // create the hospitals
+// Static variable to store the last printed hospital ID
-    let hospitals: [Hospital; 2] = [
+static LAST_HOSPITAL_ID: Mutex<Option<i32>> = Mutex::new(None);
-        Hospital {
+
-            id: 1,
+pub async fn create_hospital_list(pool: Arc<PgPool>) -> Result<(), sqlx::Error> {
-            name: "Centre Hospitalier".to_string(),
+    // Fetch hospitals from the database
-        },
+    let hospitals = sqlx::query_as!(
-        Hospital {
+        Hospital,
-            id: 2,
+        r#"
-            name: "Hopital Kirchberg".to_string(),
+        SELECT id, name FROM hospitals ORDER BY id
-        },
+        "#
-    ];
+    )
+    .fetch_all(&*pool)
+    .await?;
+
+    if hospitals.is_empty() {
+        log_with_timestamp("No hospitals found in the database.");
+        return Ok(());
+    }
 
     // let mut start: DateTime<Local> = Local.with_ymd_and_hms(2025, 1, 6, 8, 0, 0).unwrap(); // set date for testing
     let mut start: DateTime<Local> = Local::now();
     let mut end: DateTime<Local> = get_end_of_shift(start);
 
-    println!("It is now {} and the current Shift is ending on {}", start.format("%A %d/%m/%Y %H:%M"), end.format("%A %d/%m/%Y %H:%M"));
+    log_with_timestamp(&format!("It is now {} and the current Shift is ending on {}", 
-    println!("Whitch Hospital is actualy on duty?");
+        start.format("%A %d/%m/%Y %H:%M"), 
+        end.format("%A %d/%m/%Y %H:%M")));
+    log_with_timestamp("Which Hospital is currently on duty?");
 
     // print out the hospitals
     for hospital in &hospitals {
-        println!("{}) {}", hospital.id, hospital.name)
+        log_with_timestamp(&format!("{}) {}", hospital.id, hospital.name));
     }
 
     let mut hospital_id_input = String::new();
@@ -46,26 +64,249 @@ pub fn create_hospital_list() {
     let hospital_id: i32 = match hospital_id_input.parse() {
         Ok(num) => num,
         Err(_) => {
-            println!("Please enter a valid number!");
+            log_with_timestamp("Please enter a valid number!");
-            return;
+            return Ok(());
         }
     };
-    let mut hospital_index: usize = (hospital_id - 1) as usize;
     
-    for _ in 1..=100 {
+    // Find the index of the selected hospital
+    let mut hospital_index: usize = 0;
+    let mut found = false;
+    for (i, hospital) in hospitals.iter().enumerate() {
+        if hospital.id == hospital_id {
+            hospital_index = i;
+            found = true;
+            break;
+        }
+    }
     
-        // Print the current hospital on duty
+    if !found {
-        println!("From {} to {} is {} on duty.", start.format("%A %d/%m/%Y %H:%M"), end.format("%A %d/%m/%Y %H:%M"), hospitals[hospital_index].name );
+        log_with_timestamp(&format!("Hospital with ID {} not found.", hospital_id));
+        return Ok(());
+    }
+
+    log_with_timestamp("Generating and storing shifts in the database...");
+    
+    // Clear existing shifts
+    sqlx::query("DELETE FROM shifts")
+        .execute(&*pool)
+        .await?;
+    
+    // Generate and store 100 shifts
+    for i in 1..=100 {
+        // Format the timestamps as strings for database storage
+        let start_str = start.format("%Y-%m-%d %H:%M:%S").to_string();
+        let end_str = end.format("%Y-%m-%d %H:%M:%S").to_string();
+        
+        // Store the current shift in the database
+        sqlx::query(
+            r#"
+            INSERT INTO shifts (hospital_id, start_time, end_time)
+            VALUES ($1, $2::timestamp with time zone, $3::timestamp with time zone)
+            "#,
+        )
+        .bind(hospitals[hospital_index].id)
+        .bind(start_str)
+        .bind(end_str)
+        .execute(&*pool)
+        .await?;
+        
+        // Print progress only every 10 shifts
+        if i % 10 == 0 {
+            log_with_timestamp(&format!("Stored {} shifts...", i));
+        }
 
         // new shift
         start = end;
         end = get_end_of_shift(start);
 
         // change hospital
-        hospital_index = if hospital_index == 0 { 1 } else { 0 }
+        hospital_index = if hospital_index == 0 { 1 } else { 0 };
+        
+        // If we only have one hospital, don't switch
+        if hospitals.len() == 1 {
+            hospital_index = 0;
+        }
     }
     
+    log_with_timestamp("Successfully stored 100 shifts in the database.");
+    Ok(())
+}
 
+pub async fn check_and_create_future_shifts(pool: Arc<PgPool>) -> Result<(), sqlx::Error> {
+    // Get the current time
+    let now = Local::now();
+    
+    // Calculate the date two months from now
+    let two_months_from_now = now + Duration::days(60);
+    
+    // Convert chrono DateTime to time OffsetDateTime for SQLx
+    let now_offset = OffsetDateTime::from_unix_timestamp(now.timestamp())
+        .expect("Failed to convert to OffsetDateTime");
+    let two_months_offset = OffsetDateTime::from_unix_timestamp(two_months_from_now.timestamp())
+        .expect("Failed to convert to OffsetDateTime");
+    
+    // Check if there are any shifts in the next two months
+    let future_shifts_count = sqlx::query_scalar::<_, i64>(
+        r#"
+        SELECT COUNT(*) FROM shifts 
+        WHERE start_time > $1 AND start_time < $2
+        "#,
+    )
+    .bind(now_offset)
+    .bind(two_months_offset)
+    .fetch_one(&*pool)
+    .await?;
+    
+    // If there are no future shifts, create them
+    if future_shifts_count == 0 {
+        log_with_timestamp("No future shifts found. Creating shifts for the next two months...");
+        
+        // Get the current hospital on duty
+        let current_hospital = sqlx::query_as!(
+            Hospital,
+            r#"
+            SELECT h.id, h.name 
+            FROM hospitals h
+            JOIN shifts s ON h.id = s.hospital_id
+            WHERE s.end_time > $1
+            ORDER BY s.end_time ASC
+            LIMIT 1
+            "#,
+            now_offset
+        )
+        .fetch_optional(&*pool)
+        .await?;
+        
+        // If no current hospital is found, get the first hospital from the database
+        let hospital_id = match current_hospital {
+            Some(hospital) => hospital.id,
+            None => {
+                let first_hospital = sqlx::query_as!(
+                    Hospital,
+                    r#"
+                    SELECT id, name FROM hospitals ORDER BY id LIMIT 1
+                    "#
+                )
+                .fetch_optional(&*pool)
+                .await?
+                .ok_or_else(|| sqlx::Error::RowNotFound)?;
+                
+                first_hospital.id
+            }
+        };
+        
+        // Find the index of the selected hospital
+        let hospitals = sqlx::query_as!(
+            Hospital,
+            r#"
+            SELECT id, name FROM hospitals ORDER BY id
+            "#
+        )
+        .fetch_all(&*pool)
+        .await?;
+        
+        let mut hospital_index = 0;
+        for (i, hospital) in hospitals.iter().enumerate() {
+            if hospital.id == hospital_id {
+                hospital_index = i;
+                break;
+            }
+        }
+        
+        // Generate shifts starting from now
+        let mut start = now;
+        let mut end = get_end_of_shift(start);
+        
+        // Generate shifts for the next two months (approximately 60 days)
+        for _ in 1..=120 {
+            // Convert chrono DateTime to time OffsetDateTime for SQLx
+            let start_offset = OffsetDateTime::from_unix_timestamp(start.timestamp())
+                .expect("Failed to convert to OffsetDateTime");
+            let end_offset = OffsetDateTime::from_unix_timestamp(end.timestamp())
+                .expect("Failed to convert to OffsetDateTime");
+            
+            // Store the current shift in the database
+            sqlx::query(
+                r#"
+                INSERT INTO shifts (hospital_id, start_time, end_time)
+                VALUES ($1, $2, $3)
+                "#,
+            )
+            .bind(hospitals[hospital_index].id)
+            .bind(start_offset)
+            .bind(end_offset)
+            .execute(&*pool)
+            .await?;
+            
+            // new shift
+            start = end;
+            end = get_end_of_shift(start);
+            
+            // change hospital
+            hospital_index = if hospital_index == 0 { 1 } else { 0 };
+            
+            // If we only have one hospital, don't switch
+            if hospitals.len() == 1 {
+                hospital_index = 0;
+            }
+        }
+        
+        log_with_timestamp("Successfully created future shifts for the next two months.");
+    } else {
+        log_with_timestamp(&format!("Found {} future shifts. No need to create more.", future_shifts_count));
+    }
+    
+    Ok(())
+}
+
+pub async fn print_current_hospital(pool: Arc<PgPool>) -> Result<(), sqlx::Error> {
+    // Get the current time
+    let now = Local::now();
+    
+    // Convert chrono DateTime to time OffsetDateTime for SQLx
+    let now_offset = OffsetDateTime::from_unix_timestamp(now.timestamp())
+        .expect("Failed to convert to OffsetDateTime");
+    
+    // Get the current hospital on duty
+    let current_hospital = sqlx::query_as!(
+        Hospital,
+        r#"
+        SELECT h.id, h.name 
+        FROM hospitals h
+        JOIN shifts s ON h.id = s.hospital_id
+        WHERE s.start_time <= $1 AND s.end_time > $1
+        ORDER BY s.end_time ASC
+        LIMIT 1
+        "#,
+        now_offset
+    )
+    .fetch_optional(&*pool)
+    .await?;
+    
+    // Get the last printed hospital ID
+    let mut last_id = LAST_HOSPITAL_ID.lock().unwrap();
+    
+    // Check if the hospital has changed
+    let current_id = current_hospital.as_ref().map(|h| h.id);
+    let has_changed = *last_id != current_id;
+    
+    // Only print if the hospital has changed
+    if has_changed {
+        match &current_hospital {
+            Some(hospital) => {
+                log_with_timestamp(&format!("Current hospital on duty: {} (ID: {})", hospital.name, hospital.id));
+            },
+            None => {
+                log_with_timestamp("No hospital currently on duty.");
+            }
+        }
+        
+        // Update the last printed hospital ID
+        *last_id = current_id;
+    }
+    
+    Ok(())
 }
 
 fn get_end_of_shift(start: DateTime<Local>) -> DateTime<Local> {