#!/bin/sh

# Dependencies check
[ -z $(command -v curl) ] && echo "Please install curl" && exit 1
[ -z $(command -v shup) ] && echo "Please install shup https://github.com/pystardust/shup" && exit 1

# Some initializations
dir="/home/niko/dev/app/wibu-rss" # To make it absolute, customize if needed especially if running a cronjob
mkdir -p "$dir/.tmp"
mkdir -p "$dir/feeds"
tmpdir="$dir/.tmp" # Just in case in the future
tmp="$(mktemp -p "$tmpdir")" # I'm too stupid to not use temporary file(s)

# Additional info for the feeds
feedlink="https://nikotile.xyz/library/rss" # see printNewFeed()
email="niko@nikotile.xyz" # For support, etc kek

printNewFeed() {
  host="$1"
  id="$2"
  link="$feedlink/$id.xml"
  title=$(curl -s "$host" | shup "head" "title" | sed "s/^\s*//" | sed "s/<titl.*>//" | sed "s/<\/title>//" | grep "\S")
  
  printf "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">\n<channel>\n<title>%s</title>\n<description>Pembaruan dari %s.</description><language>id</language>\n<link>%s</link>\n<atom:link href=\"%s\" rel=\"self\" type=\"application/rss+xml\" />\n<webMaster>%s</webMaster>\n<!-- content -->\n</channel>\n</rss>" "$title" "$host" "$link" "$link" "$email" > "$dir/feeds/$id.xml"
}

validateFeed() {
  id="$1"
  host="$2"

  # Create a new xml file if doesn't exist
  [ ! -f "$dir/feeds/$id.xml" ] && printNewFeed "$host" "$id"

  # Additional checks
  error_empty="Something is wrong with the prexisting xml file.\nPlease check if the feed is not empty.\n"
  error_invalid="Something is wrong with the prexisting xml file.\nPlease check if the feed is valid.\n"
  [ ! -s "$dir/feeds/$id.xml" ] && rm $tmp && printf "$error_empty" && exit 1
  [ -z "$(grep "<!-- content -->" "$dir/feeds/$id.xml")" ] && rm $tmp && printf "$error_invalid" && exit 1

  # Get the actual data from the host(s). Uses a temporary file to make it easier
  curl -s "$host" > $tmp
}

archive() {
  for file in "$dir/feeds"/* ; do
    date="$(date +"%Y-%m-%d")"
    newfile="$(echo $file | sed "s/feeds\//archive\/$date-/")"
    mkdir -p "$dir/archive"
    cp "$file" "$newfile"
  done
}

# Source functions
# Since each site has different structures, their function has to be specialized in some way
for file in "$dir/src"/* ; do
  . $file
done

# Actually running the function(s)
kanau
mediaformasi
risamedia
tirto

# Archive every 11 pm, remember what your system timezone is
[ "$(date +"%H")" -eq "23" ] && archive

rm -r $tmpdir