#!/usr/bin/env bash

# Toggles the state of the internal laptop monitor, which is useful
# when I'm connected to an external monitor / docks.
set -o nounset
set -o pipefail
set -e

SCRIPTS=${SCRIPTS:-$HOME/.local/scripts}
THIS_FILE=${BASH_SOURCE[0]}
LOG_LABEL=$(basename "$THIS_FILE")
THIS=${THIS:-$LOG_LABEL}
LOG_FILE=${LOG_FILE:-"/tmp/$LOG_LABEL.log"}

usage() {
  cat <<EOF

Toggles the state (enable/disable) of a monitor.

USAGE:

  $ $THIS <flags> <id>

FLAGS:
  -i | --internal:      Toggle the internal monitor.
  -h | --help:          Show this help page.

EOF
}

# Logging utility function, use in place of echo.
log() {
  logging log --source "$THIS_FILE" "$@"
}

toggle() {

  local monitor="${1:-""}"

  if [[ -z $monitor ]]; then
    log --error "No monitor supplied." && exit 1
  fi

  if hyprctl monitors | grep -q "$monitor"; then
    hyprctl keyword monitor "$monitor,disable" 1>/dev/null
  else
    hyprctl keyword monitor "$monitor,enable" 1>/dev/null
  fi
}

################################################################################
# MAIN
################################################################################

# Setup logging file and label.
source "$SCRIPTS/hypr/logging"
setup-logging "$LOG_FILE" "$LOG_LABEL"

monitor=""

while [[ $# -gt 0 ]]; do
  if [[ $1 == "-h" ]] || [[ $1 == "--help" ]]; then
    usage && exit 0
  elif [[ $1 == "-i" ]] || [[ $1 == "--internal" ]]; then
    monitor="eDP-1"
  else
    log --error "Unhandled option: $1" && exit 1
  fi
  shift
done

if [[ -z $monitor ]]; then
  read -p "Monitor id: " monitor
fi

toggle $monitor