rts

#!/usr/bin/env bash

# Get from https://dev.twitch.tv/docs/api/#step-1-setup
clientId=

headers=$(mktemp)

get() {
  if rg 'ratelimit-remaining: 0' "$headers" >/dev/null; then
    echo "API limit reached, waiting for 3 seconds.." >&2
    sleep 3
  fi
  url="https://api.twitch.tv/helix/$1"
  shift
  while ! result=$(curl -sSf -H "Client-ID: $clientId" -D "$headers" -G "$url" "$@"); do
    echo "Error response: $result" >&2
    cat "$headers" >&2
  done
  echo "$result"
}

choosegame() {
  echo -n "What game [empty for any game]? "
  read game
  if [ -n "$game" ] && ! gameid=$(get games --data-urlencode "name=$game" | jq '.data[]?.id' -r -e); then
    echo "Couldn't get game id for game '$game'" >&2
    choosegame
  fi
}

choosegame

gameidpart=${gameid:+--data-urlencode "game_id=$gameid"}

echo -n "What language (ISO 639-1 code) [empty for en]? "
read language
language=${language:-en}

echo "Game $game ($gameid), language $language"

streamUsers() {
  pagepart=${1:+--data-urlencode "after=$1"}
  echo "Getting streams for $game in $language${1:+ after cursor $1}" >&2
  result=$(get streams \
	    --data-urlencode "language=$language" \
	    --data-urlencode "first=100" \
	    $pagepart \
	    $gameidpart)
  jq '.data[].user_id' -r <<< "$result"
  cursor=$(jq '.pagination.cursor' -r <<< "$result")
  if [ "$cursor" = null ]; then
    echo "No more streams" >&2
  else
    streamUsers "$cursor"
  fi
}

userToUrl() {
  result=$(get users --data-urlencode "id=$1")
  login=$(echo "$result" | jq '.data[].login' -r)
  echo "https://twitch.tv/$login"
}

streamUsers | shuf | while read user; do
  mpv "$(userToUrl "$user")" "$@"
done