#!/bin/bash

read url
arg1=`echo "$url" | cut -d\  -f1`
argrest=`echo "$url" | cut -d\  -f1 --complement`

if [[ $arg1 = "--version" ]]
then
  echo "Blatech head v0.2"
  exit
elif [[ $arg1 = "-h" || $arg1 = "--help" ]]
then
  echo "Give an HTTP URL to get its MIME type, size and modified date.  -v for verbose output, --help for this help message, --version for the version number."
  exit
elif [[ $arg1 = "-v" ]]
then
  curl -sI "$argrest" | sed ':a;N;$!ba;s/\r\n/ | /g' | sed 's/ | \r$//'
  exit
fi

curl -sI "$url" > head.txt
sed -i ':a;N;$!ba;s/\r//g' head.txt

http=`grep HTTP head.txt`
modified=`grep Last-Modified head.txt | sed "s/Last-Modified: //"`
type=`grep Content-Type head.txt | cut -d " " -f2`
length=`grep Content-Length head.txt | cut -d " " -f2 | ./filesize.sh | sed -r "s/[ \t]{2,}//"`

if [[ ! "$http" =~ "200" ]]
then
  echo $http
else
  if [ -z "$length" ] && [ -z "$modified" ]
  then
    echo "$type"
  else
    echo "$type | $length | $modified"
  fi
fi

rm head.txt