Implemented the factory reset script (#9293)

* Implemented the factory reset script

* Added options for CH to the factory reset script and fixed Redis reset

* Added help option for the factory reset script

tools/factory_reset.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+help() {
+  echo "Usage: $0 [OPTIONS]"
+  echo ""
+  echo "This script resets ntopng data by:"
+  echo "  - Removing /var/lib/ntopng/ contents"
+  echo "  - Flushing ntopng Redis keys"
+  echo "  - Dropping ClickHouse ntopng database"
+  echo ""
+  echo "Options:"
+  echo "  -c, --clickhouse         Enable ClickHouse reset"
+  echo "  -h, --host <hostname>    ClickHouse host (default: localhost)"
+  echo "  -u, --user <username>    ClickHouse username"
+  echo "  -p, --password <pass>    ClickHouse password"
+  echo "      --help               Show this help message and exit"
+  echo ""
+  echo "Example:"
+  echo "  sudo $0 --clickhouse --host localhost --user admin --password secret"
+  exit 0
+}
+
+CLICKHOUSE=0
+HOST=""
+USER=""
+PASS=""
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --help)
+      help
+      ;;
+    -c|--clickhouse)
+      CLICKHOUSE=1
+      shift
+      ;;
+    -h|--host)
+      HOST="$2"
+      shift 2
+      ;;
+    -u|--user)
+      USER="$2"
+      shift 2
+      ;;
+    -p|--password)
+      PASS="$2"
+      shift 2
+      ;;
+    *)
+      echo "Unknown option: $1"
+      exit 1
+      ;;
+  esac
+done
+if [ "$EUID" -ne 0 ]; then
+  echo "Please run this script as root"
+  exit 1
+fi
+
+echo "Removing contents of /var/lib/ntopng/..."
+rm -rf /var/lib/ntopng/*
+echo "ntopng data removed."
+
+NTOPNG_KEYS=$(redis-cli --raw keys "ntopng.*" | wc -l)
+if [ "$NTOPNG_KEYS" -gt 1 ]; then
+  echo "Flushing Redis ($NTOPNG_KEYS keys)..."
+  redis-cli --raw keys "ntopng.*" | xargs -n 100 redis-cli del >/dev/nul
+  echo "Redis flushed."
+else
+  echo "No ntopng-related keys found in Redis. Skipping flush."
+fi
+
+check_clickhouse_installed() {
+    command -v clickhouse-client >/dev/null 2>&1
+}
+
+if [ "$CLICKHOUSE" -eq 1 ]; then
+    if check_clickhouse_installed; then
+
+        echo "Dropping ntopng database from ClickHouse..."
+        CMD=("clickhouse-client")
+        if [ -n "$HOST" ]; then
+            CMD+=(--host="$HOST")
+        fi
+        if [ -n "$USER" ]; then
+            CMD+=(--user="$USER")
+        fi
+        if [ -n "$PASS" ]; then
+            CMD+=(--password="$PASS")
+        fi
+        CMD+=(--query="DROP DATABASE IF EXISTS ntopng")
+
+        "${CMD[@]}"
+
+        if [ $? -eq 0 ]; then
+            echo "ClickHouse database ntopng dropped."
+        else
+            echo "Failed to drop ClickHouse database."
+        fi
+    else
+        echo "ClickHouse is not installed."
+    fi
+else
+    echo "Skipping ClickHouse operations."
+fi