#!/bin/bash
# KVM Switch: Nobara → Mac
# Switches monitor to USB-C and peripherals to Channel 3 (Mac Bolt via monitor hub)
#
# Channel setup:
#   Channel 2 (0x01): Bolt #1 → Nobara
#   Channel 3 (0x02): Bolt #2 → Mac (via monitor USB hub)

set -e

HIDAPITESTER="$HOME/bin/hidapitester"
[ -x "$HIDAPITESTER" ] || HIDAPITESTER="/usr/local/bin/hidapitester"

echo "Switching to Mac..."

# 1. Switch Monitor to USB-C (Dell U3821DW input code: 27)
echo "  Monitor -> USB-C..."
if command -v ddcutil &>/dev/null; then
    ddcutil setvcp 60 27 2>/dev/null || \
        echo "  [WARN] Monitor switch failed (DDC/CI disabled or permissions issue)"
else
    echo "  [WARN] ddcutil not installed: sudo dnf install ddcutil"
fi

# 2. Switch Mouse (MX Master 3S) to Channel 3 (Mac Bolt)
# Device index 0x01 - adjust if mouse was paired in different order
echo "  Mouse -> Channel 3..."
"$HIDAPITESTER" --vidpid 046d/c548 --usage 0x0001 --usagePage 0xff00 \
    --open --length 7 --send-output 0x10,0x01,0x09,0x1b,0x02,0x00,0x00 2>/dev/null || \
    echo "  [WARN] Mouse switch failed"

# 3. Switch Keyboard (MX Keys S) to Channel 3 (Mac Bolt)
# Device index 0x02 - adjust if keyboard was paired in different order
echo "  Keyboard -> Channel 3..."
"$HIDAPITESTER" --vidpid 046d/c548 --usage 0x0001 --usagePage 0xff00 \
    --open --length 7 --send-output 0x10,0x02,0x09,0x1b,0x02,0x00,0x00 2>/dev/null || \
    echo "  [WARN] Keyboard switch failed"

echo "Done!"