add first draft of cal

src/rest/cal.rs

@@ -0,0 +1,33 @@
+use rocket::{get, routes, Route, State};
+use sqlx::SqlitePool;
+
+use crate::model::planned_event::PlannedEvent;
+
+#[get("/")]
+async fn index(db: &State<SqlitePool>) -> String {
+    let mut res = String::from(
+        r#"BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//rudernlinz.at//Trips//DE"#,
+    );
+
+    let events = PlannedEvent::all(db).await;
+    for event in events {
+        res.push_str("\nBEGIN:VEVENT");
+        res.push_str(&format!("\nUID:{}@rudernlinz.at", event.id));
+        res.push_str(&format!(
+            "\nDTSTART:{}T{}Z",
+            event.day, event.planned_starting_time
+        ));
+        res.push_str(&format!("\nSUMMARY:{}", event.name));
+
+        res.push_str("\nEND:VEVENT");
+    }
+
+    res.push_str("\nEND:VCALENDAR");
+    res
+}
+
+pub fn routes() -> Vec<Route> {
+    routes![index]
+}