Add QR codes, link expiry, password protection, previews, audit trail and bulk operations

src/models/api_key.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct ApiKey {

src/models/audit.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct AuditLog {

src/models/mod.rs

@@ -1,13 +1,13 @@
-pub mod user;
-pub mod url;
-pub mod page;
-pub mod visit;
 pub mod api_key;
 pub mod audit;
+pub mod page;
+pub mod url;
+pub mod user;
+pub mod visit;
 
-pub use user::{User, Session};
-pub use url::Url;
-pub use page::LandingPage;
-pub use visit::{VisitRecord, SummaryEntry};
 pub use api_key::ApiKey;
 pub use audit::AuditLog;
+pub use page::LandingPage;
+pub use url::{AuditEvent, LinkPreview, QrCode, Url};
+pub use user::{Session, User};
+pub use visit::{SummaryEntry, VisitRecord};

src/models/page.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct LandingPage {

src/models/url.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct Url {
@@ -11,4 +11,67 @@ pub struct Url {
     pub created_at: String,
     pub updated_at: String,
     pub tags: Vec<String>,
+    // --- Feature Expansion Fields ---
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub expires_at: Option<String>,
+    #[serde(default)]
+    pub expired: bool,
+    #[serde(skip_serializing)]
+    pub password_hash: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub last_status: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub last_latency_ms: Option<i64>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub max_access_count: Option<i64>,
+    #[serde(default)]
+    pub access_count: i64,
+}
+
+impl Url {
+    /// Returns true if this URL has a password set.
+    pub fn is_password_protected(&self) -> bool {
+        self.password_hash.is_some()
+    }
+
+    /// Returns true if this URL has reached its access limit.
+    pub fn is_access_exhausted(&self) -> bool {
+        if let Some(max) = self.max_access_count {
+            self.access_count >= max
+        } else {
+            false
+        }
+    }
+}
+
+/// Link preview metadata for smart landing pages.
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct LinkPreview {
+    pub id: String,
+    pub url_id: String,
+    pub title: Option<String>,
+    pub description: Option<String>,
+    pub logo_url: Option<String>,
+    pub button_text: String,
+}
+
+/// QR code metadata record.
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct QrCode {
+    pub id: String,
+    pub url_id: String,
+    pub style: String,
+    pub created_at: String,
+}
+
+/// Audit event record for the enhanced audit trail.
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct AuditEvent {
+    pub id: String,
+    pub actor: String,
+    pub action: String,
+    pub object_type: String,
+    pub object_id: String,
+    pub timestamp: String,
+    pub metadata: Option<String>,
 }

src/models/user.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct User {

src/models/visit.rs

@@ -1,4 +1,4 @@
-use serde::{Serialize, Deserialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct VisitRecord {