Add device-side log file, remote terminal, and streaming error reporting

IPTV.py now writes logs to a rotating file and forwards critical VLC
playback errors (start timeout, MediaPlayerEncounteredError) to the
server instead of losing everything to unredirected print() calls.
The web UI's device menu gets a working Terminal (to run diagnostic
commands like tail on the log) and a Recent errors view backed by a
capped last_errors list on each device document, keeping DB volume
bounded to the last 5 entries per device.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

server.py

@@ -74,6 +74,7 @@ recents =  db_iptv['recents']
 settings_collection = db_iptv['settings']
 
 devices_db = db_iptv['devices']
+MAX_STREAMING_ERRORS_PER_DEVICE = 5
 devices = []
 active_xtream_imports = {}
 sio_session_ips = {}
@@ -1471,6 +1472,21 @@ async def communication(fromSid, data):
     await sio.emit('communication', data, room=toSidDevice ,callback=messageReceived)
 
 
+@sio.event
+async def streaming_error(sid, data):
+    IdDevice = data.get('IdDevice')
+    message = data.get('message', '')
+    if not IdDevice:
+        return
+
+    print('streaming_error from device :', IdDevice, message, flush=True)
+    error_entry = {'message': str(message)[:500], 'timestamp': time.time()}
+    devices_db.update_one(
+        {'id_device': IdDevice},
+        {'$push': {'last_errors': {'$each': [error_entry], '$slice': -MAX_STREAMING_ERRORS_PER_DEVICE}}}
+    )
+
+
 @sio.event
 def disconnect(sid):
     sio_session_ips.pop(sid, None)

static/IPTV.py

@@ -5,6 +5,7 @@
 
 
 import logging
+import logging.handlers
 import vlc
 import os
 import re
@@ -12,7 +13,6 @@ import sys
 import json
 import queue
 import psutil
-import logging
 import requests
 import time
 import threading
@@ -44,6 +44,31 @@ sio = socketio.Client(
 )
 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
 
+# ----------------------------------------------------------------
+# LOGGING (fichier local avec rotation, consultable via le Terminal
+# du menu device sur le site, ex: tail -n 200 iptv.log)
+# ----------------------------------------------------------------
+LOG_FILE_PATH = "/home/pi/Documents/iptv.log"
+LOG_FILE_MAX_BYTES = 1_000_000
+LOG_FILE_BACKUP_COUNT = 5
+
+logger = logging.getLogger(__name__)
+logger.setLevel(logging.INFO)
+_log_formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+
+_console_handler = logging.StreamHandler()
+_console_handler.setFormatter(_log_formatter)
+logger.addHandler(_console_handler)
+
+try:
+    _file_handler = logging.handlers.RotatingFileHandler(
+        LOG_FILE_PATH, maxBytes=LOG_FILE_MAX_BYTES, backupCount=LOG_FILE_BACKUP_COUNT
+    )
+    _file_handler.setFormatter(_log_formatter)
+    logger.addHandler(_file_handler)
+except OSError as exc:
+    logger.warning("Unable to open log file %s: %s", LOG_FILE_PATH, exc)
+
 
 class IdleScreenManager:
     def __init__(self):
@@ -167,7 +192,7 @@ class IdleScreenManager:
             self.root.after(IDLE_SCREEN_REFRESH_INTERVAL_MS, self._refresh_recent_data)
             self.root.mainloop()
         except Exception as exc:
-            print("Unable to start idle screen:", exc, flush=True)
+            logger.warning("Unable to start idle screen: %s", exc)
             self.enabled = False
 
     def _process_commands(self):
@@ -358,7 +383,7 @@ def fetch_channel_logo_photo(item):
     try:
         photo_image = ImageTk.PhotoImage(background)
     except Exception as exc:
-        print("Unable to create Tk logo image:", exc, flush=True)
+        logger.warning("Unable to create Tk logo image: %s", exc)
         return None, f"Tk image creation failed: {exc}"
 
     logo_cache[cache_key] = photo_image
@@ -482,7 +507,7 @@ def sync_recent_channels_from_server():
         if normalized_items:
             return save_recent_channels_to_db(normalized_items)
     except Exception as exc:
-        print("Unable to refresh recent channels from server:", exc, flush=True)
+        logger.warning("Unable to refresh recent channels from server: %s", exc)
 
     return recent
 
@@ -494,7 +519,34 @@ def focus_vlc_player():
     try:
         media_principal.set_fullscreen(True)
     except Exception as exc:
-        print("Unable to focus VLC player:", exc, flush=True)
+        logger.warning("Unable to focus VLC player: %s", exc)
+
+
+STREAMING_ERROR_REPORT_MIN_INTERVAL_SECONDS = 5
+_last_streaming_error_report_ts = 0
+
+
+def report_streaming_error(message):
+    """Log a critical streaming error and forward it to the server (best effort,
+    rate-limited so a burst of VLC errors doesn't flood the socket)."""
+    global _last_streaming_error_report_ts
+
+    logger.error(message)
+
+    now = time.time()
+    if now - _last_streaming_error_report_ts < STREAMING_ERROR_REPORT_MIN_INTERVAL_SECONDS:
+        return
+    _last_streaming_error_report_ts = now
+
+    try:
+        if sio.connected:
+            sio.emit('streaming_error', {'IdDevice': IdDevice, 'message': str(message)})
+    except Exception as exc:
+        logger.warning("Unable to report streaming error to server: %s", exc)
+
+
+def on_vlc_encountered_error(event):
+    report_streaming_error("VLC encountered a playback error (channel: %s)" % mediaRunning)
 
 
 def wait_for_vlc_playback_start():
@@ -507,11 +559,11 @@ def wait_for_vlc_playback_start():
                 focus_vlc_player()
                 return True
         except Exception as exc:
-            print("Unable to determine VLC playback state:", exc, flush=True)
+            logger.warning("Unable to determine VLC playback state: %s", exc)
             break
         time.sleep(VLC_PLAYBACK_POLL_INTERVAL_SECONDS)
 
-    print("VLC did not report playback start before timeout", flush=True)
+    report_streaming_error("VLC did not report playback start before timeout (channel: %s)" % mediaRunning)
     return False
 
 
@@ -617,6 +669,7 @@ def new_media_player(url):
         media.add_option(f":vout={forced_vout}")
 
     player.set_media(media)
+    player.event_manager().event_attach(vlc.EventType.MediaPlayerEncounteredError, on_vlc_encountered_error)
     return player
 
 
@@ -650,7 +703,7 @@ def capture_and_upload_snapshot():
     snapshot_path = get_snapshot_filepath()
     snapshot_status = media_principal.video_take_snapshot(0, snapshot_path, 0, 0)
     if snapshot_status != 0:
-        print('snapshot capture failed', flush=True)
+        logger.error("Snapshot capture failed")
         return False
 
     upload_snapshot_file(snapshot_path)
@@ -663,7 +716,7 @@ def snapshot_loop():
             if auto_snapshot_enabled and data_running:
                 capture_and_upload_snapshot()
         except Exception as exc:
-            print('snapshot loop error', exc, flush=True)
+            logger.warning("Snapshot loop error: %s", exc)
         time.sleep(SNAPSHOT_INTERVAL_SECONDS)
 
 def RepresentsInt(s):
@@ -677,7 +730,7 @@ def convertMillis(millis):
      seconds=(millis/1000)%60
      minutes=(millis/(1000*60))%60
      hours=(millis/(1000*60*60))%24
-     print(str(seconds)+" "+str(minutes)+" "+ str(hours))
+     logger.debug("%s %s %s", seconds, minutes, hours)
      return seconds, minutes, hours
 
 def is_vpn_connected():
@@ -730,12 +783,12 @@ def findInfo(tag, s):
 
 def restart_process():
     try:
-        print('restart new process')
+        logger.info("Restarting process")
         p = psutil.Process(os.getpid())
         for handler in p.get_open_files() + p.connections():
             os.close(handler.fd)
     except Exception as e:
-        logging.error(e)
+        logger.error(e)
 
     python = sys.executable
     os.execl(python, python, *sys.argv)
@@ -768,7 +821,7 @@ def display_overlay_message(message, duration_ms=10000):
         media_principal.video_set_marquee_int(vlc.VideoMarqueeOption.Timeout, duration_ms)
         media_principal.video_set_marquee_int(vlc.VideoMarqueeOption.Position, 8)
     except Exception as exc:
-        print('Unable to display overlay message:', exc, flush=True)
+        logger.warning("Unable to display overlay message: %s", exc)
 
 
 def playMedia(id_channel, url_channel, name_channel, id_playlist):
@@ -781,20 +834,20 @@ def playMedia(id_channel, url_channel, name_channel, id_playlist):
         media_principal.stop()
         media_principal.release()
     except Exception as e:
-        print("Unable to reset VLC player:", e, flush=True)
+        logger.warning("Unable to reset VLC player: %s", e)
 
     media_principal = new_media_player(url_channel)
     try:
         media_principal.set_fullscreen(True)
     except Exception as e:
-        print("Unable to enable fullscreen:", e, flush=True)
+        logger.warning("Unable to enable fullscreen: %s", e)
     media_principal.audio_set_volume(200)
     media_principal.play()
     start_playback_transition()
     mediaRunning = name_channel
     data_running = {'name_channel':name_channel, 'id_channel':id_channel, 'id_playlist':id_playlist, 'url_channel': url_channel, 'progress':0}
     prepend_recent_channel(id_channel, url_channel, name_channel, id_playlist)
-    print(' DATA : ', data_running, flush=True)
+    logger.info("Playback started: %s", data_running)
 
     media_principal.video_set_marquee_int(vlc.VideoMarqueeOption.Enable, 1)
     media_principal.video_set_marquee_string(vlc.VideoMarqueeOption.Text, name_channel)
@@ -813,7 +866,7 @@ def update_source():
             updated_file.write(r.content)
         os.replace(temp_path, path + 'IPTV.py')
     except Exception as exc:
-        print('error update_source', exc, flush=True)
+        logger.error("Error during update_source: %s", exc)
         if os.path.exists(temp_path):
             os.remove(temp_path)
         raise
@@ -821,14 +874,14 @@ def update_source():
 
 def wait_for_internet_connection():
     while True:
-        print("Checking connexion ...", flush=True)
+        logger.info("Checking connexion ...")
         for check_url, verify_ssl in CONNECTIVITY_CHECK_TARGETS:
             try:
                 requests.get(check_url, timeout=CONNECTIVITY_CHECK_TIMEOUT_SECONDS, verify=verify_ssl)
-                print(f"Connectivity check succeeded with {check_url}", flush=True)
+                logger.info("Connectivity check succeeded with %s", check_url)
                 return
             except requests.RequestException as exc:
-                print(f"Connectivity check failed for {check_url}: {exc}", flush=True)
+                logger.warning("Connectivity check failed for %s: %s", check_url, exc)
 
         time.sleep(CONNECTIVITY_CHECK_RETRY_SECONDS)
 
@@ -856,18 +909,18 @@ def ensure_socket_connection(force_reset=False):
                     pass
 
             wait_for_internet_connection()
-            print('Attempting socket connection...', flush=True)
+            logger.info("Attempting socket connection...")
             sio.connect(
                 url_update_server,
                 wait=True,
                 wait_timeout=SOCKET_CONNECT_TIMEOUT,
                 transports=['websocket', 'polling']
             )
-            print('Socket connection ready', flush=True)
+            logger.info("Socket connection ready")
             server_connection_ready = True
             return True
         except Exception as exc:
-            print('Socket reconnection failed', exc, flush=True)
+            logger.warning("Socket reconnection failed: %s", exc)
             server_connection_ready = False
             return False
 
@@ -876,7 +929,7 @@ def polling_server():
     global media_principal
     global data_running
     global status_vpn
-    print('polling_server')
+    logger.info("Polling loop started")
     while True:
         try:
             if not sio.connected:
@@ -890,7 +943,7 @@ def polling_server():
             percentage = media_principal.get_position()*100
             
             if data_running:
-                print(data_running_tmp)
+                logger.debug("Current playback state: %s", data_running_tmp)
                 data_running = {'name_channel':data_running_tmp['name_channel'], 'id_channel':data_running_tmp['id_channel'], 'id_playlist':data_running_tmp['id_playlist'], 'url_channel':data_running_tmp['url_channel'], 'progress':milli, 'percentage':percentage}
             sio.emit('polling', {
                 'name': name_device,
@@ -902,7 +955,7 @@ def polling_server():
                 'snapshot_interval_seconds': SNAPSHOT_INTERVAL_SECONDS
             })
         except Exception as exc:
-            print('Polling failed, will reconnect', exc, flush=True)
+            logger.warning("Polling failed, will reconnect: %s", exc)
             ensure_socket_connection(force_reset=True)
         time.sleep(POLLING_INTERVAL_SECONDS)
 
@@ -911,23 +964,23 @@ def polling_server():
 
 def sendMessage(fromSidDevice, toSidDevice, typeCommand, payload, num_packet):
     new_data = {'fromSidDevice': fromSidDevice, 'toSidDevice': toSidDevice, 'typeCommand': typeCommand, 'payload': payload, 'packet':num_packet}
-    print(new_data)
+    logger.info("Sending message: %s", new_data)
     if sio.connected or ensure_socket_connection():
         sio.emit('communication', new_data)
     else:
-        print('Socket disconnected, unable to send message', flush=True)
+        logger.warning("Socket disconnected, unable to send message")
 
 
 @sio.event
 def connect():
     global server_connection_ready
     server_connection_ready = True
-    print('connection established')
+    logger.info("Connection established")
 
 
 @sio.event
 def connect_error(data):
-    print('connection error', data, flush=True)
+    logger.error("Connection error: %s", data)
 
 
 @sio.event
@@ -973,14 +1026,14 @@ def communication(data):
     # PLAY A CHANNEL ON
     # --------------------------------
     if typeCommand == "on":
-        print ("switch on")
+        logger.info("Switch on requested")
         data_channel = data['payload']
         name_channel = data_channel['name']
         url_channel = data_channel['url']
         id_channel = data_channel['id_channel']
         id_playlist = data_channel['id_playlist']
 
-        print(id_channel, name_channel, url_channel, flush=True)
+        logger.info("Playing channel id=%s name=%s url=%s", id_channel, name_channel, url_channel)
         playMedia(id_channel, url_channel, name_channel, id_playlist)
         sendMessage(toSidDevice, fromSidDevice, 'playing', name_channel, 0)
         sendMessage(toSidDevice, fromSidDevice, 'warning', 'Starting media', 0)
@@ -1105,7 +1158,7 @@ def communication(data):
     if typeCommand == "changeDeviceName":
         global name_device
         name_device = data['payload']
-        print(name_device)
+        logger.info("Change device name to: %s", name_device)
         query = "UPDATE settings SET valueParameter = '" + name_device + "' WHERE nameParameter = 'deviceName'"
         cur_ = con.cursor()
         cur_.execute(query)
@@ -1134,7 +1187,7 @@ def communication(data):
     # --------------------------------
     if typeCommand == "takeSnapshot":
         try:
-            print('take snapshot')
+            logger.info("Take snapshot requested")
             time.sleep(1)
             capture_and_upload_snapshot()
         except Exception as e:
@@ -1152,22 +1205,19 @@ def communication(data):
     # Command line
     # --------------------------------
     if typeCommand == "command_line":
+        logger.info("Command line requested: %s", data['payload'])
         records = re.split(r' ', data['payload'])
-        #result = subprocess.run(records, capture_output=True, text=True)
+        process = subprocess.Popen(records, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True)
-        process = subprocess.Popen(records, stdout=subprocess.PIPE, text=True)
         for line in process.stdout:
-            print(line, end="")
+            logger.info("command_line output: %s", line.rstrip())
             sendMessage(toSidDevice, fromSidDevice, 'display_command_result', line, 0)
 
 
-        #print(result.stdout)
-        
-
 @sio.event
 def disconnect():
     global server_connection_ready
     server_connection_ready = False
-    print('Disconnected from server', flush=True)
+    logger.warning("Disconnected from server")
 
 
 
@@ -1181,7 +1231,7 @@ def initDB():
         cur = con.cursor()
         cur.execute('SELECT SQLITE_VERSION()')
         data = cur.fetchone()
-        print ("Connexion succeed : SQLite version: %s" % data)
+        logger.info("Connexion succeed : SQLite version: %s", data)
         cur.execute(
             """
             CREATE TABLE IF NOT EXISTS recent_channels_cache (
@@ -1197,7 +1247,7 @@ def initDB():
         con.commit()
 
     except (lite.Error, e):
-        print ("Error %s:" % e.args[0])
+        logger.error("Error %s:", e.args[0])
         sys.exit(1)
 
 
@@ -1217,9 +1267,9 @@ def initIPTV():
     record = cur_.fetchone()
     if record:
         IdDevice = record[0]
-        print(IdDevice)
+        logger.info("Device ID: %s", IdDevice)
     else:
-        print("No ID device found")
+        logger.info("No ID device found, generating one")
         IdDevice = str(uuid.uuid4())
         query = "INSERT INTO settings (nameParameter, valueParameter) VALUES ('IdDevice', '"+IdDevice+"')"
         cur_ = con.cursor()
@@ -1234,7 +1284,7 @@ def initIPTV():
     valueParameter = cur_.fetchone()
     if valueParameter is not None:
         name_device = valueParameter
-        print('Update device name : ' + str(name_device))
+        logger.info("Update device name : %s", name_device)
 
 
     # SAVE PID
@@ -1252,7 +1302,7 @@ def initIPTV():
 
 # ----------------------------------------------------------------
 # ----------------------------------------------------------------
-num_version='5.0.4'
+num_version='5.0.6'
 # ----------------------------------------------------------------
 # ----------------------------------------------------------------
 
@@ -1266,7 +1316,7 @@ db_file = 'config.db'
 path = os.path.dirname(os.path.realpath(__file__))+'/'
 con = None
 pid = os.getppid()
-print('PID : ', pid)
+logger.info("PID : %s", pid)
 
 channels = []
 playlists = []
@@ -1317,12 +1367,8 @@ auth_file = "/home/pi/Documents/auth.txt"
 
 
 # ----------------------------------------------------------------
-# ----------------------------------------------------------------
+# ---------------------------------------------------------------
-
+# (logging configuré plus haut dans le fichier, juste après les imports)
-logging.basicConfig(
-    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO
-)
-logger = logging.getLogger(__name__)
 
 # ----------------------------------------------------------------
 # LOOP PRINCIPAL

static/index.html

@@ -961,6 +961,8 @@
                                                 <li><a onclick="openSnapshotIntervalSettings()" class="dropdown-item" href="#">Snapshot interval</a></li>
                                                 <li><a onclick="openGeminiKeySettings()" class="dropdown-item" href="#">Gemini API Key</a></li>
                                                 <li><a onclick="openTerminal()" class="dropdown-item" href="#">Terminal</a></li>
+                                                <li><a onclick="viewDeviceLogs()" class="dropdown-item" href="#">View logs</a></li>
+                                                <li><a onclick="openRecentErrors()" class="dropdown-item" href="#">Recent errors</a></li>
                                                 <li><a onclick="takeSnapshot()" class="dropdown-item" href="#">Take Snapshot</a></li>
                                                 <li><a onclick="getIP()" class="dropdown-item" href="#">Get IP</a></li>
                                                 <li class="dropdown-submenu">
@@ -1152,19 +1154,35 @@
 
         <!-- ZONE MODAL TERMINAL -->
         <div class="modal fade" id="modalTerminal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
-        <div class="modal-dialog modal-dialog-centered modal-sm" role="document">
+        <div class="modal-dialog modal-dialog-centered" role="document">
             <div class="modal-content">
                 <div class="modal-header">
                     <h5 class="modal-title">Terminal </h5>
+                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                 </div>
                 <div class="modal-body">
                     <div class="input-group mb-3">
                         <span class="input-group-text" id="basic-addon1">Command</span>
                         <input type="text" class="form-control" placeholder="Text Command" aria-label="Command" aria-describedby="basic-addon1" id="txt_command">
                     </div>
-                    <button type="button" class="btn btn-primary">Send command</button>
+                    <button type="button" class="btn btn-primary" id="btn_send_terminal_command">Send command</button>
-                    <div class="alert alert-secondary" role="alert" id="txt_result_command">
+                    <button type="button" class="btn btn-outline-secondary" id="btn_view_device_logs">View streaming logs</button>
-                    </div>
+                    <pre class="alert alert-secondary mt-3 mb-0" role="alert" id="txt_result_command" style="max-height: 320px; overflow-y: auto; white-space: pre-wrap; text-align: left;"></pre>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        <!-- ZONE MODAL RECENT ERRORS -->
+        <div class="modal fade" id="modalRecentErrors" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
+        <div class="modal-dialog modal-dialog-centered" role="document">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">Recent streaming errors</h5>
+                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+                </div>
+                <div class="modal-body">
+                    <div id="recent_errors_list" style="max-height: 320px; overflow-y: auto;"></div>
                 </div>
             </div>
         </div>
@@ -1511,6 +1529,7 @@
     var playlistImportProgress = 0
     var playlistImportInFlight = false
     var selectedDeviceSnapshotIntervalSeconds = 10
+    var currentSelectedDeviceData = null
 
     var socket = io('https://iptv.mrk.ovh', {
             secure: true,
@@ -1549,6 +1568,13 @@
             updateListDevices()
         }
 
+        // RECEPTION TERMINAL COMMAND OUTPUT
+        if (data['typeCommand'] == 'display_command_result') {
+            var resultBox = document.getElementById('txt_result_command');
+            $(resultBox).text($(resultBox).text() + data['payload']);
+            resultBox.scrollTop = resultBox.scrollHeight;
+        }
+
         // PROGRESS BAR DISPLAY
         if (data['typeCommand'] == 'progress_analysis') {
             $('#progress-container').show()
@@ -2661,6 +2687,7 @@
                 if (isCurrentDevice) {
                     currentDeviceUpdated = true;
                     selectedDeviceSnapshotData = dataJSON[i];
+                    currentSelectedDeviceData = dataJSON[i];
               
                     $('#sidDevice').val( dataJSON[i].sid)
                     var data_running = dataJSON[i].data_running || {}
@@ -2684,6 +2711,7 @@
 
             }
             if (!currentDeviceUpdated) {
+                currentSelectedDeviceData = null;
                 updateCurrentDeviceStream({label: 'No data', className: 'bg-secondary'}, false);
                 updateSelectedDeviceSnapshot(null, false);
                 updateAutoSnapshotToggle(null);
@@ -3170,6 +3198,86 @@
         });
     });
 
+    // --- TERMINAL / DEVICE LOGS ---
+    var DEVICE_LOG_FILE_PATH = '/home/pi/Documents/iptv.log';
+
+    function openTerminal() {
+        if ($('#sidDevice').val().length === 0 || $('#id_device').val().length === 0) {
+            $('#noDeviceModal').modal('show');
+            return;
+        }
+        $('#txt_command').val('');
+        $('#txt_result_command').text('');
+        $('#modalTerminal').modal('show');
+    }
+
+    function sendTerminalCommand(command) {
+        if ($('#sidDevice').val().length === 0 || $('#id_device').val().length === 0) {
+            $('#modalTerminal').modal('hide');
+            $('#noDeviceModal').modal('show');
+            return;
+        }
+
+        var cmd = (typeof command === 'string') ? command : $('#txt_command').val().trim();
+        if (!cmd) {
+            return;
+        }
+
+        $('#txt_command').val(cmd);
+        $('#txt_result_command').text('');
+        socket.emit('communication', {
+            fromSidDevice: $('#sidClient').val(),
+            toSidDevice: $('#sidDevice').val(),
+            typeCommand: 'command_line',
+            payload: cmd,
+            packet: 0
+        });
+    }
+
+    $('#btn_send_terminal_command').click(function () {
+        sendTerminalCommand();
+    });
+
+    $('#btn_view_device_logs').click(function () {
+        sendTerminalCommand('tail -n 200 ' + DEVICE_LOG_FILE_PATH);
+    });
+
+    function viewDeviceLogs() {
+        if ($('#sidDevice').val().length === 0 || $('#id_device').val().length === 0) {
+            $('#noDeviceModal').modal('show');
+            return;
+        }
+        $('#txt_result_command').text('');
+        $('#modalTerminal').modal('show');
+        sendTerminalCommand('tail -n 200 ' + DEVICE_LOG_FILE_PATH);
+    }
+
+    $('#txt_command').on('keypress', function (e) {
+        if (e.which === 13) {
+            sendTerminalCommand();
+        }
+    });
+
+    function openRecentErrors() {
+        if ($('#sidDevice').val().length === 0 || $('#id_device').val().length === 0) {
+            $('#noDeviceModal').modal('show');
+            return;
+        }
+
+        var errors = (currentSelectedDeviceData && currentSelectedDeviceData.last_errors) || [];
+        var html = '';
+        if (errors.length === 0) {
+            html = '<div class="text-muted">No recent errors.</div>';
+        } else {
+            errors.slice().reverse().forEach(function (err) {
+                var when = err.timestamp ? new Date(err.timestamp * 1000).toLocaleString() : '';
+                html += '<div class="alert alert-danger py-2 mb-2"><strong>' + when + '</strong><br>' + $('<div>').text(err.message).html() + '</div>';
+            });
+        }
+        $('#recent_errors_list').html(html);
+        $('#modalRecentErrors').modal('show');
+    }
+
     // --- AI SEARCH ---
     function openAiSearch() {
         $('#aiSearchAlert').html('');