#! /usr/bin/env sh

# A hyprland script for a laptop-external-monitor setup, toggling between which is in use

# Launch at startup to make hyprland disable the internal monitor if an external monitor is detected and enabled
# Additionally it's called with a keybind to switch between a laptop monitor and an external display
# Ideally the conditional monitor behaviour was instead done directly in hyprland.conf, but I'm not sure whether that's possible
#
# Relevant info:
# - hyprctl monitors: identifies currently enabled monitors
# - hyprctl monitors all: identifies ALL connected monitors - including those not in use
#
# Suggested use:
# Add this line somewhere after the regular monitor configuration in hyprland.conf:
# exec = /path/to/hyprland-monitors-toggle.sh
# Add a keybind to run this script on demand:
# bind =,SomeKeyHere, exec, /path/to/hyprland-monitors-toggle.sh

#move_all_workspaces_to_monitor() {
#  TARGET_MONITOR="$1"

#  hyprctl workspaces | grep ^workspace | cut --delimiter ' ' --fields 3 | xargs -I '{}' hyprctl dispatch moveworkspacetomonitor '{}' "$TARGET_MONITOR"

#  # Previous approach
#  #hyprctl swapactiveworkspaces $EXTERNAL_MONITOR $INTERNAL_MONITOR
#}

# TODO: Detect these instead of hardcoding them
INTERNAL_MONITOR="eDP-1"
EXTERNAL_MONITOR="HDMI-A-1"

# NUM_MONITORS=$(hyprctl monitors all | grep --count Monitor)
# NUM_MONITORS_ACTIVE=$(hyprctl monitors | grep --count Monitor)

# Make sure all
# if [ "$NUM_MONITORS_ACTIVE" -eq 1 ]; then
#     move_all_workspaces_to_monitor $INTERNAL_MONITOR
#     exit
# fi

MIRROR_SETTING=$(hyprctl monitors all -j | jq -r '.[] | select(.name == "HDMI-A-1") | .mirrorOf')

# # For dynamically toggling which monitor is active later via a keybind
# if [ "$NUM_MONITORS" -gt 1 ]; then # Handling multiple monitors
#   if hyprctl monitors | cut --delimiter ' ' --fields 2 | grep --quiet ^$EXTERNAL_MONITOR; then
#     hyprctl keyword monitor $INTERNAL_MONITOR,preferred,0x0,1
#     move_all_workspaces_to_monitor $INTERNAL_MONITOR
#     hyprctl keyword monitor "$EXTERNAL_MONITOR, disable"
#   else
#     hyprctl keyword monitor $EXTERNAL_MONITOR,preferred,0x0,1
#     move_all_workspaces_to_monitor $EXTERNAL_MONITOR
#     hyprctl keyword monitor "$INTERNAL_MONITOR, disable"
#   fi
# else  # If the external monitor is disconnected without running this script first, it might become the case that no monitor is on - therefore turn on the laptop monitor!
#     hyprctl keyword monitor $INTERNAL_MONITOR,preferred,0x0,1
#     move_all_workspaces_to_monitor $INTERNAL_MONITOR
# fi

echo setting:
echo $MIRROR_SETTING
if [ "$MIRROR_SETTING" = "none" ]; then
    echo "mirroring..."
    hyprctl keyword monitor "$EXTERNAL_MONITOR, preferred, auto, 1, mirror, $INTERNAL_MONITOR"
else
    hyprctl keyword monitor "$EXTERNAL_MONITOR, disable" # shortly disable monitor so waybar recognizes the new monitor again # TODO: find better solution
    hyprctl keyword monitor "$EXTERNAL_MONITOR, preferred, auto, 1"
fi