Add MLS in 15 videos to VLC

mls_in_15.lua

function descriptor()
  return { title="MLS in 15"}
end

function main()
  vlc.msg.dbg("Loading MLS in 15 graphql query")
  local videos, err = query_mls_graphql()

  if err then
    vlc.msg.warn(err)
    return
  end

  for i, v in ipairs(ReverseTable(videos)) do
    vlc.sd.add_item({
      path=v["source"],
      title=v["name"],
      duration=v["duration"] / 1000
    })
  end
end

function query_mls_graphql()
  local query = [[
    query {
      videos(channels: ["MLS in 15"], limit: 20) {
        id,
        name,
        duration,
        source
      }
    }]]
    local url = "https://blender-api.mlsdigital.net/graphql?query=" .. vlc.strings.encode_uri_component(query)
    local obj, pos, err = parse_json(url)

    if err then
      return nil, "Error querying GraphQL: " .. err
    end

    if obj.errors then
      local err = "GraphQL query error: " .. obj.errors[0].message
      return nil, err
    end

    return obj["data"]["videos"]
end

-- -- Download and parse a JSON document from the specified URL
-- -- Returns: obj, pos, err (see dkjson docs)
function parse_json(url)
  local json   = require("dkjson")
  local stream = vlc.stream(url)
  local string = ""
  local line   = ""

  if not stream then
      return nil, nil, "Failed creating VLC stream"
  end

  while true do
      line = stream:readline()

      if not line then
          break
      end

      string = string .. line
  end

  return json.decode(string)
end

function ReverseTable(t)
  local reversedTable = {}
  local itemCount = #t
  for k, v in ipairs(t) do
      reversedTable[itemCount + 1 - k] = v
  end
  return reversedTable
end