#!/usr/bin/env bash
# Merge both global and local charfiles
CHARDIR=~/.cache/charsel
mkdir $CHARDIR/
cp -R /usr/share/charsel/* $CHARDIR/
cp -R ~/.local/share/charsel/* $CHARDIR/

# Check if user provided an input
if [ $1 = "list" ]; then
  echo "The following charfiles are installed"
  ls $CHARDIR/charfiles
  exit
elif [[ $1 = "help" || $1 = "-h" || $1 = "--help" || $# -ne 1 ]]; then
  cat /usr/share/doc/charsel/README.md
  exit
else

# Clear screen
clear

# Define charfile path
CHARFILE=$CHARDIR/charfiles/$1

# Define length of shortcut
LENGTH=$(cat $CHARFILE | cut -f 1 -d ',' -s | wc -L | cut -b 1)

# MOTD
cat $CHARDIR/motd

# Main program
while :
do
  # Put charfile into table, showing only the shortcuts below the divider in the charfile
  cat $CHARFILE | grep -A 100 - | tail -n +2 | column -t  --output-separator ' | ' --separator ','

  # Automatically enter input
  read -N $LENGTH INPUT
  
  # Navigate to the right characther
  LINENUMBER=$(cut -f 1 -d ',' -s $CHARFILE | grep -n $INPUT | cut -d : -f 1)
  OUTPUT=$(cut -f 2 -d ',' -s $CHARFILE | head -$LINENUMBER | tail +$LINENUMBER)
  # Clear screen
  clear

  # Copy output to clipboard
  echo $OUTPUT | xclip -selection clipboard
done

fi