New Calling structure using https://livekit.io/ (: Incomplete, Untested

:)

src/calls/call_util.rs

@@ -0,0 +1,21 @@
+use livekit_api::access_token;
+use std::env;
+use uuid::Uuid;
+
+pub fn create_token(
+    user_id: Uuid,
+    call_id: Uuid,
+) -> Result<String, access_token::AccessTokenError> {
+    let api_key = env::var("LIVEKIT_API_KEY").expect("LIVEKIT_API_KEY is not set");
+    let api_secret = env::var("LIVEKIT_API_SECRET").expect("LIVEKIT_API_SECRET is not set");
+
+    let token = access_token::AccessToken::with_api_key(&api_key, &api_secret)
+        .with_identity(&user_id.to_string())
+        .with_grants(access_token::VideoGrants {
+            room_join: true,
+            room: call_id.to_string(),
+            ..Default::default()
+        })
+        .to_jwt();
+    return token;
+}