#!/bin/bash
# Remap USB Tab Button to F20 (for PTT use with Superwhisper, Discord, etc.)
# Works with generic USB tab key (VendorID: 0x8808, ProductID: 0x6600)
VID="0x8808"
PID="0x6600"
PLIST="$HOME/Library/LaunchAgents/com.user.usb-button-remap.plist"
# Check if device is connected
if ! hidutil list | grep -q "0x8808.*0x6600"; then
  echo "ERROR: USB button not detected. Plug it in and try again."
  exit 1
fi
echo "Found USB button (VID: $VID, PID: $PID)"
# Apply remap now
hidutil property \
  --matching "{\"VendorID\":$VID,\"ProductID\":$PID}" \
  --set '{"UserKeyMapping":[{"HIDKeyboardModifierMappingSrc":0x70000002B,"HIDKeyboardModifierMappingDst":0x70000006F}]}' \
  > /dev/null
echo "Remapped Tab -> F20 on USB button"
# Create Launch Agent so it persists across reboots
cat > "$PLIST" << 'EOF'
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.user.usb-button-remap</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/bin/hidutil</string>
        <string>property</string>
        <string>--matching</string>
        <string>{"VendorID":0x8808,"ProductID":0x6600}</string>
        <string>--set</string>
        <string>{"UserKeyMapping":[{"HIDKeyboardModifierMappingSrc":0x70000002B,"HIDKeyboardModifierMappingDst":0x70000006F}]}</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
</dict>
</plist>
EOF
launchctl unload "$PLIST" 2>/dev/null
launchctl load "$PLIST"
echo "Launch Agent installed -- remap will persist across reboots."
echo ""
echo "Done! Now set your PTT keybind to F20 in your app."