Added database connection

Code now connects to database and prints out errors. Also the ticket
table now includes a timestamp field

backend/src/main.rs

@@ -1,10 +1,24 @@
+mod models;
 use axum::{Router, routing};
 use dotenv::dotenv;
+use models::*;
 use serde::{Deserialize, Serialize};
 use sqlx::{PgPool, postgres::PgPoolOptions};
 
 #[tokio::main]
 async fn main() {
+    dotenv().ok();
+    let database_url = std::env::var("DATABASE_URL").expect("DATABASE_URL variable not set");
+    let pool = match PgPoolOptions::new().connect(&database_url).await {
+        Ok(pool) => {
+            println!("Database connection successful");
+            pool
+        }
+        Err(err) => {
+            println!("Failed to connect to database: {:?}", err);
+            std::process::exit(1);
+        }
+    };
     let app = Router::new().route("/", routing::get(root_handler));
 
     let listener = tokio::net::TcpListener::bind("0.0.0.0:8001").await.unwrap();

backend/src/models.rs

@@ -0,0 +1,30 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, Deserialize)]
+pub enum category {
+    WhiteboardBeamer,
+    Internet,
+    IPadKoffer,
+    AppleTV,
+    DocuCam,
+    Sonstiges,
+}
+
+#[derive(Deserialize, Clone, PartialEq, Debug)]
+pub struct ticket {
+    pub id: i32,
+    pub category: category,
+    pub betreff: String,
+    pub description: String,
+    pub room: i16,
+    pub date: chrono::NaiveDateTime,
+    pub user_id: i16,
+}
+
+#[derive(Deserialize, Clone, PartialEq, Debug)]
+pub struct user {
+    pub id: i16,
+    pub first_name: String,
+    pub last_name: String,
+    pub is_admin: bool,
+}