#!/usr/bin/env bash
#
# Emoji Menu
#
# Quickly find emojis and copy to clipboard.
#
#
# To install:
#
# 1. Clean-up https://unicode.org/Public/emoji/11.0/emoji-test.txt
#    grep -Po '(?<=   #).*'
#
# 2. Install xclip and rofi
#    sudo apt install xclip rofi
#
# 3. Assign to a keyboard combination
#    Try xbindkeys
#

set -e

# Emoji database location
EMOJI_MENU_DB=${EMOJI_MENU_DB:-"$HOME/.emoji-menu-db"}

# Command to run after user chooses an emoji
EMOJI_MENU_COMMAND=${EMOJI_MENU_COMMAND:-'xclip -selection clipboard'}

# Report usage
usage() {
  echo "Usage: $(basename "$0") [-t | -c <command>] [-f <filepath> ]" 1>&2
  echo
  echo "   -f <filepath>  Use a custom emoji database."
  echo "   -c <command>   Apply a custom command to the emoji choice."
  echo "   -t             Simulate typing the emoji choice with the keyboard."
  echo
  exit "$1"
}

# Type result using xdotool
typeResult() {
  awk '{ print "type " $0 }' | xdotool -
}

# Get Options
while getopts ":c:f:th" o; do
  case "${o}" in
    f) EMOJI_MENU_DB="${OPTARG}" ;;
    c) EMOJI_MENU_COMMAND="${OPTARG}" ;;
    t) EMOJI_MENU_COMMAND=typeResult ;;
    h) usage 0 ;;
    *) usage 1 ;;
  esac
done

# Default DB
if [ ! -e "$EMOJI_MENU_DB" ]; then
  wget -O "$EMOJI_MENU_DB" 'http://bit.ly/emoji-menu-db'
fi

# Rofi can handle large inputs and emojis
rofi -p '🔍' -width 610 -dmenu \
  < "$EMOJI_MENU_DB" \
  | grep -oP '^[^\s]+' \
  | tr -d '\n' \
  | ${EMOJI_MENU_COMMAND}