#!/usr/bin/env bash

set -uo pipefail
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8

LAUNCHER=('rofi' '-kb-custom-1' 'Alt+d' '-kb-custom-2' 'Alt+n' '-kb-custom-3' 'Alt+e' '-theme-str' 'window {width: 20%;}' '-dmenu' '-c' '-l' '10' '-p')
NOTESDIR="${XDG_DOCUMENTS_DIR:-$HOME/.notes}"
mkdir -p "$NOTESDIR"

newnote() {
  local NAME
  NAME=$(printf "%s" "$(find "$NOTESDIR" -maxdepth 1 -type f -printf '%T@ %f\n' | sort -rn | cut -d' ' -f2-)" | \
  "${LAUNCHER[@]}" "new:" | xargs)
  
  if [[ -z "$NAME" ]]; then
    return 1
  fi
    
  touch "${NOTESDIR}/${NAME}"
  main
}

opennote() {
  local NOTE="$1"
  $TERMINAL --class notes "$EDITOR" "${NOTESDIR}/${NOTE}"
  main
}

deletenote() {
  local NOTE="${1:-}"
  
  if [[ -z "$NOTE" ]]; then
    NOTE=$(find "$NOTESDIR" -maxdepth 1 -type f -printf '%T@ %f\n' | sort -rn | cut -d' ' -f2- | \
      "${LAUNCHER[@]}" "delete:")
  fi
    
  [[ -z "$NOTE" ]] && return 1
    
  local CONFIRM
  CONFIRM=$(printf "%s\n%s\n" "no" "yes" | \
      "${LAUNCHER[@]}" "delete ${NOTE}:")
    
  if [[ "$CONFIRM" == "yes" ]]; then
    rm "${NOTESDIR}/${NOTE}"
    echo "Deleted ${NOTE}"
  fi
  main
}

editnote() {
  local NOTE="${1:-}"
  NAME=$(echo "" | \
  "${LAUNCHER[@]}" 'edit:' -filter "$NOTE" -matching prefix)
   
  if [[ -z "$NAME" ]]; then
    main
  fi
    
  if [[ "${NOTE}" != "${NAME}" ]]; then
    mv "${NOTESDIR}/${NOTE}" "${NOTESDIR}/${NAME}"
  fi
    
  main
}

main() {
  local CHOICE
  CHOICE=$(printf "%s" "$(find "$NOTESDIR" -maxdepth 1 -type f -printf '%T@ %f\n' | sort -rn | cut -d' ' -f2-)" | \
    "${LAUNCHER[@]}" "notes:")

  local EXITCODE=$?
  case $EXITCODE in
    0)  # Enter pressed
      case "$CHOICE" in
        *) opennote "$CHOICE" ;;
      esac
      ;;
    10) # Delete pressed
      case "$CHOICE" in
        *) deletenote "$CHOICE" ;;
      esac
      ;;
    11) # New pressed
      case "$CHOICE" in
        *) newnote ;;
      esac
      ;;
    12)
      case "$CHOICE" in
        *) editnote "$CHOICE";;
      esac
      ;;
    1)  # Escape pressed
      exit 0
      ;;
    esac
}

main