#!/bin/sh

##### config #####
# command to filtering tool
FILTER="peco"
#FILTER="fzf --ansi --multi --reverse"

# command to grep
GREP_CMD="ag"

# command to less
LESS_CMD="less -giNMRXSW"

DEFAULT_NAME="`date +%Y%m%d`"
EXTENSION=".md"
MEMO_DIR="$HOME/documents/workspace/memo"
##################

function get_editor()
{
  USE_EDITOR=`echo $VISUAL`
  if [[ -z $USE_EDITOR ]]; then
    USE_EDITOR=`echo $EDITOR`
  fi
  if [[ -z $USE_EDITOR ]]; then
    exit 1
  fi
}

function usage()
{
  echo "Usage: $(basename ${0}) [-c] [-e] [-g PATTERN] [-h] [-l] [-n] [-s] [-t TITLE]"
  echo ""
  echo "Options:"
  echo "  -c  Copy or edit a memo with a default name [ $DEFAULT_NAME$EXTENSION ]"
  echo "  -e  Edit memo"
  echo "  -g  Grep memo"
  echo "  -h  Show this message"
  echo "  -l  Show memo list"
  echo "  -n  Create or edit a memo with a default name [ $DEFAULT_NAME$EXTENSION ]"
  echo "  -s  Show memo contents"
  echo "  -t  Create or edit a memo with the entered title [ $DEFAULT_NAME-TITLE$EXTENSION ]"
  exit 0
}

function new_memo()
{
  get_editor
  if [[ -n $OPTARG ]]; then
    $USE_EDITOR $MEMO_DIR/`date +%Y/%m/`$DEFAULT_NAME-$OPTARG$EXTENSION
  else
    $USE_EDITOR $MEMO_DIR/`date +%Y/%m/`$DEFAULT_NAME$EXTENSION
  fi
  exit 0
}

function list_memo()
{
  find $MEMO_DIR -type f | sort -r | $FILTER
  exit 0
}

function show_memo_contents()
{
  find $MEMO_DIR -type f | sort -r | $FILTER | xargs $LESS_CMD
  exit 0
}

function edit_memo()
{
  FILE_NAME=`find $MEMO_DIR -type f | sort -r | $FILTER`

  if [[ -z $FILE_NAME ]]; then
    exit 1
  fi

  get_editor
  $USE_EDITOR $FILE_NAME
  exit 0
}

function copy_memo()
{
  FILE_NAME=`find $MEMO_DIR -type f | sort -r | $FILTER`

  if [[ -z $FILE_NAME ]]; then
    exit 1
  fi

  COPY_FILE=$MEMO_DIR/`date +%Y/%m/`$DEFAULT_NAME$EXTENSION
  if [[ ! -f $COPY_FILE ]]; then
    \cp $FILE_NAME $COPY_FILE
  fi

  get_editor
  $USE_EDITOR $COPY_FILE
  exit 0
}

function grep_memo()
{
  if [[ -n $OPTARG ]]; then
    $GREP_CMD $OPTARG $MEMO_DIR
  fi
  exit 0
}

while getopts ceg:lnst:h OPT
do
  case $OPT in
    "c" ) copy_memo ;;
    "e" ) edit_memo ;;
    "g" ) grep_memo ;;
    "l" ) list_memo ;;
    "n" ) new_memo ;;
    "s" ) show_memo_contents ;;
    "t" ) new_memo ;;
    "h" ) usage ;;
     *  ) usage ;;
  esac
done

usage