#!/usr/bin/env bash
set -euo pipefail

PRIMARY="eDP-2"
DP_OUT="DP-2"
HDMI_OUT="HDMI-A-1"

# eDP-2 at scale 1.5 → logical width 1280px → externals start at x=1280
# DP-2 at 1920px wide → HDMI starts at x=1280+1920=3200

notify() {
  notify-send -a "monitor-toggle" "$1" "${2:-}" 2>/dev/null || true
}

active_monitors() {
  hyprctl -j monitors | jq -r '.[] | select(.disabled != true) | .name'
}

has_external() {
  active_monitors | grep -qvx "$PRIMARY"
}

profile_laptop() {
  wlr-randr --output "$DP_OUT"   --off 2>/dev/null || true
  wlr-randr --output "$HDMI_OUT" --off 2>/dev/null || true
  notify "Laptop only"
}

profile_dual() {
  wlr-randr --output "$PRIMARY"  --on --mode 1920x1080@144 --pos 0,0    --scale 1
  wlr-randr --output "$HDMI_OUT" --on --mode 1920x1080@60  --pos 1920,0 --scale 1
  wlr-randr --output "$DP_OUT"   --off 2>/dev/null || true
  notify "Dual"
}

profile_triple() {
  wlr-randr --output "$PRIMARY"  --on --mode 1920x1080@144 --pos 0,0    --scale 1
  wlr-randr --output "$HDMI_OUT" --on --mode 1920x1080@60  --pos 1920,0 --scale 1
  wlr-randr --output "$DP_OUT"   --on --mode 1920x1080@60  --pos 3840,0 --scale 1 --transform 90
  notify "Triple"
}

toggle() {
  if has_external; then
    profile_laptop
  else
    profile_triple
  fi
}

status() {
  echo "Active monitors:"
  active_monitors | sed 's/^/  - /'
}

case "${1:-}" in
  laptop) profile_laptop ;;
  dual)   profile_dual   ;;
  triple) profile_triple ;;
  toggle) toggle         ;;
  status) status         ;;
  *)
    echo "Usage: $(basename "$0") laptop|dual|triple|toggle|status"
    exit 1
    ;;
esac