Youtube playback

[admin]

While this can be implemented with manual copying of tokens this solution might stop working at any point. The problem is that OAuth is means for end-user apps with UI not for server-to-server communication (Spotify server-to-server API does not provide player control). You will need a script to refresh the token periodically as it has a short expiration time.

This example might be helpful. It's for different OAuth service but quite similar. You need to put refresh token into storage variable and use access token from storage in scripts that send API requests.

Code:

url = require('socket.url')
http = require('ssl.https')
ltn12 = require('ltn12')
json = require('json')

refresh_token = storage.get('oauth_refresh_token')
if not refresh_token then
  log('missing refresh_token')
  return
end

local function buildqs(chunks)
  local qs = {}
  for k, v in pairs(chunks) do
    qs[ #qs + 1 ] = url.escape(tostring(k)) .. '=' .. url.escape(tostring(v))
  end
  return table.concat(qs, '&')
end

payload = buildqs({
  grant_type = 'refresh_token',
  client_id = 'CLIENT_ID',
  client_secret = 'CLIENT_SECRET',
  refresh_token = refresh_token,
})

source = ltn12.source.string(payload)

headers = {
  ['content-length'] = tostring(#payload),
  ['content-type'] = 'application/x-www-form-urlencoded; charset=UTF-8',
}

sink, output = ltn12.sink.table()

local one, code, hdrs, status = http.request({
  url = 'ENDPOINT_URL',
  sink = sink,
  source = source,
  method = 'POST',
  headers = headers,
})

res = table.concat(output)

if code == 200 then
  res, err = json.pdecode(res)

  if type(res) == 'table' then
    storage.set('oauth_access_token', res.access_token)
    storage.set('oauth_refresh_token', res.refresh_token)
  else
    log('json decode failed', res, err)
  end
else
  log('error', code, res)
end