#!/bin/sh
fzf=${YATT_FZF:="fzf --ansi"}
fzfm=${YATT_FZF_MULTI:="fzf --ansi -m"}

script_executable=${yatt_script_executable:=$0}

usage () {
  echo "\
$usage_prefix with preferred fuzzy finder.
By default, 'fzf' is used, but you can change it by setting \
YATT_FZF environment variable value.

USAGE:
    $script_executable [SUBCOMMAND]

SUBCOMMANDS:
    task        Handles tasks
    group       Handles groups
    interval    Handles intervalsa
    theme       Handles themes
    help        Prints this message

FLAGS:
    -m          Multiselect
"
  exit 0
}

error () {
  echo "Error: invalid argument. Type \
'$script_executable help' to get list of possible commands."
  exit 1
}

[ -z "$1" ] && usage
[ "$1" != "help" ] || usage

command=$1
if [ "$command" == "-m" ]; then
  command=$2
  fzf=$fzfm
fi

echo $command | grep -E '^task|interval|group|theme$' > /dev/null || error

if [ "$command" == "theme" ]; then
  command="themes list"

  while read -r line; do
    line=$(echo $line | grep -E '[0-9a-z\-]+' -o)
    if [ "$res" != "" ]; then
      res="$res,$line"
    else
      res="$line"
    fi
  done <<< $(yatt $command | $fzf)
else
  command=${command}s
  command="list ${command/groups/"tasks -g"}"

  while read -r line; do
    line="${line%%]*}"
    line="${line#[}"
    if [ "$res" != "" ]; then
      res="$res,$line"
    else
      res="$line"
    fi
  done <<< $(yatt $command | $fzf)
fi


echo "${res#[}"