adding new features

src/Storage/Database.php

@@ -181,5 +181,17 @@ $this->pdo->exec("
                 created_at TEXT DEFAULT (datetime('now'))
             )
         ");
+
+        $this->pdo->exec("
+            CREATE TABLE IF NOT EXISTS audit_log (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                action TEXT NOT NULL,
+                entity_type TEXT NOT NULL,
+                entity_id INTEGER,
+                details TEXT,
+                username TEXT,
+                created_at TEXT DEFAULT (datetime('now'))
+            )
+        ");
     }
 }

src/Storage/Repository.php

@@ -121,7 +121,7 @@ class Repository
         return $row ? Alert::fromRow($row) : null;
     }
 
-    public function getAlerts(int $limit = 100, int $offset = 0, ?string $status = null, ?string $severity = null): array
+    public function getAlerts(int $limit = 100, int $offset = 0, ?string $status = null, ?string $severity = null, ?string $since = null, ?string $until = null): array
     {
         $where = [];
         $params = [];
@@ -134,6 +134,14 @@ class Repository
             $where[] = 'severity = ?';
             $params[] = $severity;
         }
+        if ($since) {
+            $where[] = 'created_at >= ?';
+            $params[] = $since;
+        }
+        if ($until) {
+            $where[] = 'created_at <= ?';
+            $params[] = $until;
+        }
 
         $sql = "SELECT * FROM alerts";
         if ($where) {
@@ -187,29 +195,52 @@ class Repository
         $stmt->execute([$line, $sourceId, $sourceName, $level]);
     }
 
-    public function searchLogEntries(string $query, int $limit = 200, int $offset = 0): array
+    public function searchLogEntries(string $query, int $limit = 200, int $offset = 0, ?string $since = null, ?string $until = null): array
     {
         $query = trim($query);
         if ($query === '') {
             return [];
         }
 
+        $where = [];
+        $params = [];
+
+        if ($since) {
+            $where[] = 'e.created_at >= ?';
+            $params[] = $since;
+        }
+        if ($until) {
+            $where[] = 'e.created_at <= ?';
+            $params[] = $until;
+        }
+
         if ($query === '*') {
-            $stmt = $this->db->pdo()->prepare(
-                "SELECT * FROM log_entries ORDER BY created_at DESC LIMIT ? OFFSET ?"
-            );
-            $stmt->execute([$limit, $offset]);
+            $sql = "SELECT * FROM log_entries e";
+            if ($where) {
+                $sql .= ' WHERE ' . implode(' AND ', $where);
+            }
+            $sql .= " ORDER BY e.created_at DESC LIMIT ? OFFSET ?";
+            $params[] = $limit;
+            $params[] = $offset;
+            $stmt = $this->db->pdo()->prepare($sql);
+            $stmt->execute($params);
             return $stmt->fetchAll();
         }
 
         $like = $this->toLikePattern($query);
-        $stmt = $this->db->pdo()->prepare(
-            "SELECT e.* FROM log_entries e
-             WHERE e.line LIKE ?
-             ORDER BY e.created_at DESC
-             LIMIT ? OFFSET ?"
-        );
-        $stmt->execute([$like, $limit, $offset]);
+        $where[] = 'e.line LIKE ?';
+        $params[] = $like;
+        $sql = "SELECT e.* FROM log_entries e";
+
+        if ($where) {
+            $sql .= ' WHERE ' . implode(' AND ', $where);
+        }
+        $sql .= " ORDER BY e.created_at DESC LIMIT ? OFFSET ?";
+        $params[] = $limit;
+        $params[] = $offset;
+
+        $stmt = $this->db->pdo()->prepare($sql);
+        $stmt->execute($params);
         return $stmt->fetchAll();
     }
 
@@ -338,4 +369,96 @@ class Repository
         }
         return false;
     }
+
+    // --- Audit Log ---
+
+    public function logAudit(string $action, string $entityType, ?int $entityId = null, ?string $details = null, ?string $username = null): void
+    {
+        $stmt = $this->db->pdo()->prepare(
+            "INSERT INTO audit_log (action, entity_type, entity_id, details, username) VALUES (?, ?, ?, ?, ?)"
+        );
+        $stmt->execute([$action, $entityType, $entityId, $details, $username]);
+    }
+
+    public function getAuditLog(int $limit = 50): array
+    {
+        return $this->db->pdo()->prepare(
+            "SELECT * FROM audit_log ORDER BY created_at DESC LIMIT ?"
+        )->execute([$limit])->fetchAll();
+    }
+
+    // --- Retention ---
+
+    public function purgeOldData(int $logDays = 30, int $alertDays = 90): array
+    {
+        $deletedLogs = $this->db->pdo()->prepare(
+            "DELETE FROM log_entries WHERE created_at < datetime('now', ?)"
+        )->execute(['-' . $logDays . ' days'])->rowCount();
+
+        $deletedAlerts = $this->db->pdo()->prepare(
+            "DELETE FROM alerts WHERE status = 'resolved' AND created_at < datetime('now', ?)"
+        )->execute(['-' . $alertDays . ' days'])->rowCount();
+
+        $this->db->pdo()->exec("DELETE FROM rate_limiter WHERE window_start < " . (time() - 86400));
+
+        return ['log_entries_deleted' => $deletedLogs, 'alerts_deleted' => $deletedAlerts];
+    }
+
+    // --- Log Context ---
+
+    public function getLogContext(int $id, int $before = 5, int $after = 5): array
+    {
+        $beforeStmt = $this->db->pdo()->prepare(
+            "SELECT * FROM log_entries WHERE id < ? ORDER BY id DESC LIMIT ?"
+        );
+        $beforeStmt->execute([$id, $before]);
+        $beforeRows = array_reverse($beforeStmt->fetchAll());
+
+        $current = $this->db->pdo()->prepare("SELECT * FROM log_entries WHERE id = ?");
+        $current->execute([$id]);
+        $currentRow = $current->fetch();
+
+        $afterStmt = $this->db->pdo()->prepare(
+            "SELECT * FROM log_entries WHERE id > ? ORDER BY id ASC LIMIT ?"
+        );
+        $afterStmt->execute([$id, $after]);
+        $afterRows = $afterStmt->fetchAll();
+
+        return [
+            'before' => $beforeRows,
+            'current' => $currentRow,
+            'after' => $afterRows,
+        ];
+    }
+
+    // --- Bulk Operations ---
+
+    public function bulkUpdateAlertStatus(array $ids, AlertStatus $status): int
+    {
+        if (empty($ids)) return 0;
+        $placeholders = implode(',', array_fill(0, count($ids), '?'));
+        $stmt = $this->db->pdo()->prepare(
+            "UPDATE alerts SET status = ? WHERE id IN ($placeholders)"
+        );
+        $stmt->execute(array_merge([$status->value], $ids));
+        return $stmt->rowCount();
+    }
+
+    public function exportAlerts(array $ids): array
+    {
+        if (empty($ids)) return [];
+        $placeholders = implode(',', array_fill(0, count($ids), '?'));
+        $stmt = $this->db->pdo()->prepare("SELECT * FROM alerts WHERE id IN ($placeholders) ORDER BY id");
+        $stmt->execute($ids);
+        return array_map(fn(array $r) => Alert::fromRow($r), $stmt->fetchAll());
+    }
+
+    public function exportLogs(array $ids): array
+    {
+        if (empty($ids)) return [];
+        $placeholders = implode(',', array_fill(0, count($ids), '?'));
+        $stmt = $this->db->pdo()->prepare("SELECT * FROM log_entries WHERE id IN ($placeholders) ORDER BY id");
+        $stmt->execute($ids);
+        return $stmt->fetchAll();
+    }
 }