#!/bin/sh
# this is a wget stub which directly interfaces with the browsers javascript fetch()
# REASON: way less overhead / complexity compared to the v86 linux networking stack
 
url="$1"
filename="$(basename "$url")"
tmp=/mnt/$$
 
test -z "$1" && { echo "usage: $0 <url> [-o outfile]"; exit 0; }
 
for arg in $*; do
  test $arg = "-o" && shift && filename=$*
  shift
done

echo "$url" | grep -qE '^http' && test -f ~/.config/wget/corsproxy && {
  proxy="$(cat ~/.config/wget/corsproxy)"
  url="${proxy}${url}"
  echo "[i] using CORS proxy: $url" 1>&2
}
 
js '$("[isoterminal]").emit("create_file_from_url",["'$tmp'","'$url'"])'
while sleep 0.5s; do
  printf "." 1>&2
  test -f $tmp && {
    test "$(awk '{ print $1 }' $tmp)" = 0 && retcode=1 || retcode=0
    mv $tmp "$filename" && printf "\n" && exit $retcode
  }
done