feat(db): Added database setup and basic types (#5)

Co-authored-by: Sharang Parnerkar <parnerkarsharang@gmail.com>
Reviewed-on: #5

src/models/user.rs

@@ -1,21 +1,44 @@
-use serde::Deserialize;
-use serde::Serialize;
+use serde::{Deserialize, Serialize};
+
+/// Basic user display data used by frontend components.
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct UserData {
     pub name: String,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct LoggedInState {
-    pub access_token: String,
+/// Authentication information returned by the `check_auth` server function.
+///
+/// The frontend uses this to determine whether the user is logged in
+/// and to display their profile (name, email, avatar).
+#[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
+pub struct AuthInfo {
+    /// Whether the user has a valid session
+    pub authenticated: bool,
+    /// Keycloak subject identifier (unique user ID)
+    pub sub: String,
+    /// User email address
     pub email: String,
+    /// User display name
+    pub name: String,
+    /// Avatar URL (from Keycloak picture claim)
+    pub avatar_url: String,
 }
 
-impl LoggedInState {
-    pub fn new(access_token: String, email: String) -> Self {
-        Self {
-            access_token,
-            email,
-        }
-    }
+/// Per-user preferences stored in MongoDB.
+///
+/// Keyed by `sub` (Keycloak subject) and optionally scoped to an org.
+#[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
+pub struct UserPreferences {
+    /// Keycloak subject identifier
+    pub sub: String,
+    /// Organization ID (from Keycloak Organizations)
+    pub org_id: String,
+    /// User-selected news/search topics
+    pub custom_topics: Vec<String>,
+    /// Per-user Ollama URL override (empty = use server default)
+    pub ollama_url_override: String,
+    /// Per-user Ollama model override (empty = use server default)
+    pub ollama_model_override: String,
+    /// Recently searched queries for quick access
+    pub recent_searches: Vec<String>,
 }