restructured auto-credentials (#74)

* restructured auto-credentials

* fix clone

---------

Co-authored-by: Jai A <jaiagr+gpg@pm.me>
Co-authored-by: Geometrically <18202329+Geometrically@users.noreply.github.com>

theseus/src/api/auth.rs

@@ -57,6 +57,7 @@ pub async fn authenticate(
     Ok(credentials)
 }
 
+
 /// Refresh some credentials using Hydra, if needed
 /// This is the primary desired way to get credentials, as it will also refresh them.
 #[tracing::instrument]

theseus/src/api/profile.rs

@@ -1,5 +1,9 @@
 //! Theseus profile management interface
-use crate::{launcher::download, state::MinecraftChild};
+use crate::{
+    auth::{self, refresh},
+    launcher::download,
+    state::MinecraftChild,
+};
 pub use crate::{
     state::{JavaSettings, Profile},
     State,
@@ -91,10 +95,33 @@ pub async fn sync(path: &Path) -> crate::Result<()> {
     }
 }
 
-/// Run Minecraft using a profile
+/// Run Minecraft using a profile and the default credentials, logged in credentials,
+/// failing with an error if no credentials are available
+#[tracing::instrument(skip_all)]
+pub async fn run(path: &Path) -> crate::Result<Arc<RwLock<MinecraftChild>>> {
+    let state = State::get().await?;
+
+    // Get default account and refresh credentials (preferred way to log in)
+    let default_account = state.settings.read().await.default_user;
+    let credentials = if let Some(default_account) = default_account {
+        refresh(default_account, false).await?
+    } else {
+        // If no default account, try to use a logged in account
+        let users = auth::users().await?;
+        let last_account = users.iter().next();
+        if let Some(last_account) = last_account {
+            refresh(last_account.id, false).await?
+        } else {
+            return Err(crate::ErrorKind::NoCredentialsError.as_error());
+        }
+    };
+    run_credentials(path, &credentials).await
+}
+
+/// Run Minecraft using a profile, and credentials for authentication
 /// Returns Arc pointer to RwLock to Child
 #[tracing::instrument(skip_all)]
-pub async fn run(
+pub async fn run_credentials(
     path: &Path,
     credentials: &crate::auth::Credentials,
 ) -> crate::Result<Arc<RwLock<MinecraftChild>>> {