feat: Update audit log queries to improve clarity and accuracy in statistics

src/components/AuditLogViewer.js

@@ -280,7 +280,7 @@ export default function AuditLogViewer() {
 			</div>
 
 			{/* Statistics */}
-			{stats && (
+			{stats && stats.total > 0 && (
 				<div className="grid grid-cols-1 md:grid-cols-4 gap-4 mb-6">
 					<div className="bg-white p-4 rounded-lg shadow">
 						<h3 className="text-lg font-semibold">Total Events</h3>
@@ -289,22 +289,22 @@ export default function AuditLogViewer() {
 					<div className="bg-white p-4 rounded-lg shadow">
 						<h3 className="text-lg font-semibold">Top Action</h3>
 						<p className="text-sm font-medium">
-							{stats.actionBreakdown[0]?.action || "N/A"}
+							{stats.actionBreakdown && stats.actionBreakdown[0]?.action || "N/A"}
 						</p>
 						<p className="text-lg font-bold text-green-600">
-							{stats.actionBreakdown[0]?.count || 0}
+							{stats.actionBreakdown && stats.actionBreakdown[0]?.count || 0}
 						</p>
 					</div>
 					<div className="bg-white p-4 rounded-lg shadow">
 						<h3 className="text-lg font-semibold">Active Users</h3>
 						<p className="text-2xl font-bold text-purple-600">
-							{stats.userBreakdown.length}
+							{stats.userBreakdown ? stats.userBreakdown.length : 0}
 						</p>
 					</div>
 					<div className="bg-white p-4 rounded-lg shadow">
 						<h3 className="text-lg font-semibold">Resource Types</h3>
 						<p className="text-2xl font-bold text-orange-600">
-							{stats.resourceBreakdown.length}
+							{stats.resourceBreakdown ? stats.resourceBreakdown.length : 0}
 						</p>
 					</div>
 				</div>

src/lib/auditLog.js

@@ -177,7 +177,7 @@ export async function getAuditLogs({
       SELECT 
         al.*,
         u.name as user_name,
-        u.email as user_email
+        u.username as user_email
       FROM audit_logs al
       LEFT JOIN users u ON al.user_id = u.id
       WHERE 1=1
@@ -291,7 +291,7 @@ export async function getAuditLogStats({
 		// Dynamic import to avoid Edge Runtime issues
 		const { default: db } = await import("./db.js");
 
-		let baseQuery = "FROM audit_logs WHERE 1=1";
+		let baseQuery = "FROM audit_logs al WHERE 1=1";
 		const params = [];
 
 		if (startDate) {
@@ -310,34 +310,48 @@ export async function getAuditLogStats({
 
 		// Actions breakdown
 		const actionsStmt = db.prepare(`
-      SELECT action, COUNT(*) as count 
+      SELECT al.action, COUNT(*) as count 
       ${baseQuery} 
-      GROUP BY action 
+      GROUP BY al.action 
       ORDER BY count DESC
     `);
 		const actionsResult = actionsStmt.all(...params);
 
 		// Users breakdown
-		const usersStmt = db.prepare(`
+		let usersQuery = `
       SELECT 
         al.user_id, 
         u.name as user_name,
-        u.email as user_email,
+        u.username as user_email,
         COUNT(*) as count 
-      ${baseQuery} 
+      FROM audit_logs al
       LEFT JOIN users u ON al.user_id = u.id
-      GROUP BY al.user_id, u.name, u.email
+      WHERE 1=1
+    `;
+
+		if (startDate) {
+			usersQuery += " AND al.timestamp >= ?";
+		}
+
+		if (endDate) {
+			usersQuery += " AND al.timestamp <= ?";
+		}
+
+		usersQuery += `
+      GROUP BY al.user_id, u.name, u.username
       ORDER BY count DESC
       LIMIT 10
-    `);
+    `;
+
+		const usersStmt = db.prepare(usersQuery);
 		const usersResult = usersStmt.all(...params);
 
 		// Resource types breakdown
 		const resourcesStmt = db.prepare(`
-      SELECT resource_type, COUNT(*) as count 
+      SELECT al.resource_type, COUNT(*) as count 
       ${baseQuery} 
-      WHERE resource_type IS NOT NULL
+      WHERE al.resource_type IS NOT NULL
-      GROUP BY resource_type 
+      GROUP BY al.resource_type 
       ORDER BY count DESC
     `);
 		const resourcesResult = resourcesStmt.all(...params);