#!/usr/bin/bash

[ -z $1 ] && exit 0
after=""

while [ 1 ]
do
    if [ "$2" = "top" ]
    then
        url="reddit.com/r/$1/top.json?t=all&after=$after"
    else
        url="reddit.com/r/$1.json?after=$after"
    fi
    wget --quiet -O - "$url" |\
        tee /tmp/rtmp.json | jq '.data.children[] |.data.url' |\
        grep -E 'jpg|png"$' | xargs feh -F 2>/dev/null
    after=$(cat /tmp/rtmp.json | jq '.data.after' | tr -d '"')
    printf "continue? [y/n]: "; read ans
    [ $ans = "n" ] && exit 0
done