#!/bin/bash

# Dependencies: cut wget curl printf
# "error.log" will list all download and convert errors

# Set time file for sorting text
downloadtemp="$(mktemp)"
sortingtemp="$(mktemp)"

useragent='Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36'

# Follow given url to final destination
url=$(curl -s -L -I -o /dev/null -w '%{url_effective}' "$1")

toonname=$(echo $url | cut -d'/' -f6)
episodeno=$(echo $url | cut -d'=' -f3)
eipsodename=$(echo $url | cut -d'/' -f7)
pictureno=0
mkdir -p "$toonname/${toonname}_$(printf %03d $episodeno)"

wget --quiet -O "$downloadtemp" "$url"
if [ ! $? -eq 0 ]; then
  echo -e "Error:\tURL: $url\t(404? This may not be an issue, check the output.)" >> "$toonname/error.log"
  exit 1
fi

grep 'rel="nofollow" ondragstart="return false;" onselectstart="return false;" oncontextmenu="return false;"' "$downloadtemp" > "$sortingtemp"

echo -e "\nChapter URL: $url"

while read i; do
  pictureno=$((pictureno+1))
  imageurl=$(echo "$i" | cut -d'"' -f12 | cut -d'?' -f1)	# Cut out the indervidual image urls
  wget --no-verbose --tries=6 --user-agent="$useragent" --referer="http://www.webtoons.com/" "$imageurl" -O "$toonname/${toonname}_$(printf %03d $episodeno)/${toonname}_$(printf %03d $episodeno)_$(printf %03d $pictureno).jpg" || echo "URL: $imageurl Name: $toonname/${toonname}_$(printf %03d $episodeno)/${toonname}_$(printf %03d $episodeno)_$(printf %03d $pictureno).jpg" >> "$toonname/error.log"
done < "$sortingtemp"

# Remove the last image if it is the webtoon logo
#mv "$toonname/temp/${toonname}_$(printf %03d $episodeno)_$(printf %03d $pictureno).jpg" "$toonname/temp/logo/${toonname}_$(printf %03d $episodeno)_$(printf %03d $pictureno).jpg"

if [ -f "$toonname/error.log" ]; then
  echo "Error log:"
  cat "$toonname/error.log"
fi

# Remove temp file
rm "$sortingtemp" "$downloadtemp"