#!/bin/sh
has() {
  case "$(command -v $1 2>/dev/null)" in
    alias*|"") return 1
  esac
}
deps() {
  deps="curl"
  missing=0
  for i in $deps; do
    has $i || { echo "$i IS MISSING!"; exit 1; }
  done
  # Check for ssl
  curl -V | grep tls -i -q || {
    curl -V | grep ssl -i -q || {
      echo "!!SSL/TLS SUPPORT IS MISSING FROM CURL!!"
      echo "!!SOME SERVICES MAY NOT CONNECT!!"
      http="http"
    }
  }
  [ ! "$http" ] && http="https" # default to https
}
count() {
  c=0; IFS=' +'; for i in $1; do
    : $((c+=1))
  done
  echo "$c"
  # pure shell counter function

  # heredocs are used as piping to the while loop puts the while loop in a subshell
  # due to this subshell the value of $c is forgotten once the loop ends
  # heredocs don't create a subshell, but are able to redirect the contents of a subshell
  unset IFS
}
rule34(){
  while read -r p || [ "$p" ]; do
    F="${p##*file_url=?}"; F="${F%%? parent_id*}"
    [ "$F" = "$p" ] && continue # skip line if above has chaned nothing
    printf '%s:' "$F"
    I="${p##* id=?}"; I="${I%%? width*}"; printf '%s\n' "$I"
  done << EOF
$(curl -sL "$http://rule34.xxx//index.php?page=dapi&s=post&q=index&tags=$2&limit=1000&pid=${pid:-0}&json=0")
EOF
}
e621(){
  while read -r p || [ "$p" ]; do
    F="${p##* data-file-url=?}"; F="${F%%? data-large-file-url*}"
    [ "$F" = "$p" ] && continue # skip line if above has chaned nothing
    printf '%s:' "$F"
    I="${p##* data-id=?}"; I="${I%%? data-has-sound*}"; printf '%s\n' "$I"
  done << EOF
 $(curl -sL "$http://e621.net/posts?tags=$2&limit=120" --user-agent "booruMicro (https://dicksdeathabove.xyz/~mia/booruMicro)")
EOF
# e621 requires a UA
}
deps
case "$1" in
  r34|rule34|e621)
    [ "$1" = "r34" ] && { rule34 "$@"; exit 0; } || { ${1} "$@"; };;
  *) echo "Please select a service.."; exit 1
esac