update player with wachdog and intro

start.sh

@@ -1,58 +1,152 @@
 #!/bin/bash
 
-# Kivy Signage Player Startup Script
-# This script activates the virtual environment and starts the player
+# Kivy Signage Player Startup Script with Watchdog
+# This script monitors and auto-restarts the player if it crashes
 
 # Get the directory where this script is located
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-echo "=========================================="
-echo "Starting Kivy Signage Player"
-echo "=========================================="
-echo ""
+# Configuration
+MAX_RETRIES=999999  # Effectively unlimited retries
+RESTART_DELAY=5     # Seconds to wait before restart
+HEALTH_CHECK_INTERVAL=30  # Seconds between health checks
+HEARTBEAT_FILE="$SCRIPT_DIR/.player_heartbeat"
+STOP_FLAG_FILE="$SCRIPT_DIR/.player_stop_requested"
+LOG_FILE="$SCRIPT_DIR/player_watchdog.log"
+
+# Function to log messages
+log_message() {
+    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
+}
+
+# Function to check if player is healthy
+check_health() {
+    # Check if heartbeat file exists and is recent (within last 60 seconds)
+    if [ -f "$HEARTBEAT_FILE" ]; then
+        local last_update=$(stat -c %Y "$HEARTBEAT_FILE" 2>/dev/null || echo 0)
+        local current_time=$(date +%s)
+        local diff=$((current_time - last_update))
+        
+        if [ $diff -lt 60 ]; then
+            return 0  # Healthy
+        else
+            log_message "⚠️  Player heartbeat stale (${diff}s old)"
+            return 1  # Unhealthy
+        fi
+    else
+        # If heartbeat file doesn't exist yet, assume player is starting
+        return 0
+    fi
+}
+
+# Cleanup function
+cleanup() {
+    log_message "🛑 Watchdog received stop signal"
+    rm -f "$HEARTBEAT_FILE"
+    rm -f "$STOP_FLAG_FILE"
+    exit 0
+}
+
+# Trap signals for graceful shutdown
+trap cleanup SIGINT SIGTERM
+
+log_message "=========================================="
+log_message "🚀 Kivy Signage Player Watchdog Started"
+log_message "=========================================="
+log_message "Project directory: $SCRIPT_DIR"
+log_message "Max retries: Unlimited"
+log_message "Restart delay: ${RESTART_DELAY}s"
+log_message ""
+
+# Remove old stop flag if exists (fresh start)
+rm -f "$STOP_FLAG_FILE"
 
 # Change to the project directory
 cd "$SCRIPT_DIR"
-echo "Project directory: $SCRIPT_DIR"
 
 # Check if virtual environment exists
 if [ -d ".venv" ]; then
-    echo "Activating virtual environment..."
+    log_message "✓ Virtual environment found"
     source .venv/bin/activate
-    echo "✓ Virtual environment activated"
 else
-    echo "Warning: Virtual environment not found at .venv/"
-    echo "Creating virtual environment..."
+    log_message "⚠️  Creating virtual environment..."
     python3 -m venv .venv
     source .venv/bin/activate
-    echo "Installing dependencies..."
+    log_message "📦 Installing dependencies..."
     pip3 install -r requirements.txt
-    echo "✓ Virtual environment created and dependencies installed"
+    log_message "✓ Virtual environment ready"
 fi
 
-echo ""
-
 # Check if configuration exists
 if [ ! -f "config/app_config.json" ]; then
-    echo "=========================================="
-    echo "⚠ WARNING: Configuration file not found!"
-    echo "=========================================="
-    echo ""
-    echo "Please configure the player before running:"
-    echo "  1. Copy config/app_config.json.example to config/app_config.json"
-    echo "  2. Edit the configuration file with your server details"
-    echo ""
-    read -p "Press Enter to continue anyway, or Ctrl+C to exit..."
-    echo ""
+    log_message "⚠️  WARNING: Configuration file not found!"
+    log_message "Player may not function correctly without configuration"
 fi
 
-# Change to src directory and start the application
-echo "Starting application..."
-echo "=========================================="
-echo ""
+# Main watchdog loop
+retry_count=0
+while true; do
+    retry_count=$((retry_count + 1))
+    
+    log_message ""
+    log_message "=========================================="
+    log_message "▶️  Starting player (attempt #${retry_count})"
+    log_message "=========================================="
+    
+    # Clean old heartbeat
+    rm -f "$HEARTBEAT_FILE"
+    
+    # Start the player
+    cd "$SCRIPT_DIR/src"
+    python3 main.py &
+    PLAYER_PID=$!
+    
+    log_message "Player PID: $PLAYER_PID"
+    
+    # Monitor the player
+    while true; do
+        sleep $HEALTH_CHECK_INTERVAL
+        
+        # Check if process is still running
+        if ! kill -0 $PLAYER_PID 2>/dev/null; then
+            log_message "❌ Player process crashed or stopped (PID: $PLAYER_PID)"
+            break
+        fi
+        
+        # Check health via heartbeat
+        if ! check_health; then
+            log_message "❌ Player health check failed - may be frozen"
+            kill $PLAYER_PID 2>/dev/null
+            sleep 2
+            kill -9 $PLAYER_PID 2>/dev/null
+            break
+        fi
+        
+        # Player is healthy, continue monitoring
+    done
+    
+    # Player stopped or crashed
+    # Check if user requested intentional exit
+    if [ -f "$STOP_FLAG_FILE" ]; then
+        log_message "✋ Stop flag detected - user requested exit via password"
+        log_message "Watchdog will NOT restart the player"
+        log_message "To restart, run ./start.sh again"
+        rm -f "$HEARTBEAT_FILE"
+        break
+    fi
+    
+    log_message "⏳ Waiting ${RESTART_DELAY}s before restart..."
+    sleep $RESTART_DELAY
+    
+    # Cleanup any zombie processes
+    pkill -9 -f "python3 main.py" 2>/dev/null
+    
+done
 
-cd src
-python3 main.py
+log_message ""
+log_message "=========================================="
+log_message "Watchdog stopped"
+log_message "=========================================="
 
-# Deactivate virtual environment when app exits
+# Deactivate virtual environment (this line is never reached in watchdog mode)
 deactivate