#!/bin/sh
# Twitch.tv playlist grab script.
# License: WTFPL
# Author:  Hiltjo Posthuma <hiltjo@codemadness.org>
# Usage:   mpv --playlist $(sh twitch.sh channel)
# NOTE:    channel name is very case-sensitive ;_;

[ "$1" = "" ] && printf "Usage: %s <channel>\n" "$0" >&2 && exit 1

tokendata=$(curl -s -L "https://api.twitch.tv/api/channels/$1/access_token")
test x"${tokendata}" = x"" && exit 1
printf 'http://usher.justin.tv/api/channel/hls/%s.m3u8?token=%s&sig=%s' \
	"$1" \
	"$(printf '%s' "${tokendata}" | sed -E -e 's@.*"token":"(.*)","sig".*@\1@g' -e 's@\\"@"@g')" \
	"$(printf '%s' "${tokendata}" | sed -E 's@.*"sig":"([^"]*)".*@\1@g')"