Add bluetooth autolocking

.xinitrc

@@ -36,6 +36,7 @@ xset s 1200
 #xss-lock -- slock &
 #xss-lock -- xlock -echokeys -usefirst &
 #xscreensaver &
+bluetooth-autolock.sh &
 
 
 exec xmonad

local/bin/bluetooth-autolock.sh

@@ -0,0 +1,123 @@
+#!/usr/bin/env bash
+
+# Default configuration
+DEVICE_MAC="dc:10:57:6e:26:6b"  # Replace with your iPhone MAC
+DEFAULT_RSSI_THRESHOLD=-10      # Default RSSI threshold in dBm
+DEFAULT_CHECK_INTERVAL=10       # Default check interval in seconds
+
+# Initialize variables with defaults
+RSSI_THRESHOLD=$DEFAULT_RSSI_THRESHOLD
+CHECK_INTERVAL=$DEFAULT_CHECK_INTERVAL
+TEST_MODE=false
+
+# Function to display usage
+show_usage() {
+    echo "Usage: $0 [OPTIONS]"
+    echo ""
+    echo "OPTIONS:"
+    echo "  --test                    Run in test mode (prints to console, no actual locking)"
+    echo "  --interval <seconds>      Set check interval (default: $DEFAULT_CHECK_INTERVAL)"
+    echo "  --threshold <-dBm>        Set RSSI threshold (default: $DEFAULT_RSSI_THRESHOLD)"
+    echo "  --help                    Show this help message"
+    echo ""
+    echo "Examples:"
+    echo "  $0 --test --interval 3 --threshold -50"
+    echo "  $0 --threshold -70 --test"
+    echo "  $0 --interval 10"
+    echo ""
+    echo "Note: RSSI threshold should be negative (e.g., -60, -70, -80)"
+}
+
+is_device_connected() {
+    local connected_status
+    connected_status=$(bluetoothctl info "$DEVICE_MAC" 2>/dev/null | grep "Connected:" | awk '{print $2}')
+    [[ "$connected_status" == "yes" ]]
+}
+
+# Parse command line arguments
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --test)
+            TEST_MODE=true
+            shift
+            ;;
+        --interval)
+            if [[ -n $2 && $2 =~ ^[0-9]+$ ]]; then
+                CHECK_INTERVAL=$2
+                shift 2
+            else
+                echo "Error: --interval requires a positive integer"
+                exit 1
+            fi
+            ;;
+        --threshold)
+            if [[ -n $2 && $2 =~ ^-[0-9]+$ ]]; then
+                RSSI_THRESHOLD=$2
+                shift 2
+            else
+                echo "Error: --threshold requires a negative integer (e.g., -60)"
+                exit 1
+            fi
+            ;;
+        --help)
+            show_usage
+            exit 0
+            ;;
+        *)
+            echo "Error: Unknown option '$1'"
+            show_usage
+            exit 1
+            ;;
+    esac
+done
+
+# Display configuration
+if [[ "$TEST_MODE" == true ]]; then
+    echo "=== BLUETOOTH AUTO-LOCK TEST MODE ==="
+    echo "Device: $DEVICE_MAC"
+    echo "RSSI Threshold: $RSSI_THRESHOLD dBm"
+    echo "Check Interval: ${CHECK_INTERVAL}s"
+    echo ""
+    echo "Locking Logic:"
+    echo "  ✓ Connected + Weak Signal (< $RSSI_THRESHOLD dBm) → LOCK"
+    echo "  ✗ Connected + Strong Signal (≥ $RSSI_THRESHOLD dBm) → No action"
+    echo "  ✗ Disconnected → No action (waiting for reconnection)"
+    echo ""
+    echo "Press Ctrl+C to stop"
+    echo "Format: [TIME] [CONNECTION] RSSI: [VALUE] dBm - [ACTION]"
+    echo "--------------------------------------------------------"
+fi
+
+# Main monitoring loop
+while :; do
+    TIMESTAMP=$(date '+%H:%M:%S')
+
+    # First check if device is connected
+    if is_device_connected; then
+        # Device is connected, now check RSSI
+        RSSI=$(hcitool rssi "$DEVICE_MAC" 2>/dev/null | awk '{print $4}')
+
+        if [[ -n "$RSSI" && "$RSSI" -lt "$RSSI_THRESHOLD" ]]; then
+            # Connected but weak signal - LOCK
+            if [[ "$TEST_MODE" == true ]]; then
+                echo "[$TIMESTAMP] [CONNECTED] RSSI: $RSSI dBm - WOULD LOCK (weak signal)"
+            else
+                if ! pgrep -x "xlock" > /dev/null; then
+                    xlock -mode random &
+                fi
+            fi
+        else
+            # Connected with good signal - OK
+            if [[ "$TEST_MODE" == true ]]; then
+                echo "[$TIMESTAMP] [CONNECTED] RSSI: $RSSI dBm - OK (strong signal)"
+            fi
+        fi
+    else
+        # Device is disconnected - don't lock, wait for reconnection
+        if [[ "$TEST_MODE" == true ]]; then
+            echo "[$TIMESTAMP] [DISCONNECTED] RSSI: N/A - WAITING (no lock during reconnection)"
+        fi
+    fi
+
+    sleep "$CHECK_INTERVAL"
+  done