#!/bin/bash

#
# Thanks to ...
# the guys at puri.sm for their article about yad:
# * [https://wp.puri.sm/posts/easy-librem-5-app-development-take-a-screenshot/]()
#
# as well as this website:
# * http://smokey01.com/yad/
# 


function doStuff(){
  # :param $1: user-input
  
  # Parse user input

  SRC=`echo $1 | cut -d '|' -f1`
  H=`echo $1 | cut -d '|' -f2`
  M=`echo $1 | cut -d '|' -f3`
  S=`echo $1 | cut -d '|' -f4`

  # Print input to stdout

  printf "SRC:\t%s\n" "$SRC"
  printf "Time:\t%s:%s:%s\n" "$H" "$M" "$S"

  # Calculate time in seconds
  # H(ours) + M(inutes) + S(econds) -> S(econds)

  HS="$(( 3600 * $H ))"
  MS="$((   60 * $M ))"
  S="$((  $HS + $MS + $S ))"

  printf "Seconds: %s\n" "$S"
  
  # Split Video at specific time

  splitVideo "$SRC" "$S"
  errno="$?"
  
  # inform user of result
  
  case "$errno" in
    "0")
        TITLE="SUCCESS"
        TEXT="Done! Check out the _a.mkv and _b.mkv files next to your input file."
    ;;
    *)
        TITLE="ERROR"
        TEXT="An error occured with code $errno."
	;;
  esac
  echo "$TEXT" | yad --title="$TITLE" --wrap --text-info
  
  # return exitCode of splitVideo
  return "$errno"
}

function main(){
  # TODO check if yad installed

  # Get user input via yad (GUI)

  INPUT=`yad --title "splitVideo" --text="Split video at specific time" --form \
    --field=video:SFL \
    --field=hours:NUM \
    --field=minutes:NUM \
    --field=seconds:NUM \
    "splitMeUp.mp4" "1" "15" "5" --focus-field=1`

  case "$?" in
    "0")
        echo "User pressed 'OK'"
        doStuff "$INPUT"
        exit "$?"
    ;;
    "1")
        echo "User pressed 'cancel'"
        exit 0
	;;
	"252")
	    echo "User closed window."
	    exit 0
	;;
    *)
        echo "An unexpected error has occurred: Code $?"
        exit 1
	;;
  esac
}

main "$@"