components_config_SetServerScreen.bs

import "pkg:/source/roku_modules/log/LogMixin.brs"
import "pkg:/source/utils/config.bs"

sub init()
  m.log = log.Logger("SetServerScreen")
  m.top.setFocus(true)

  m.serverPicker = m.top.findNode("serverPicker")
  m.serverUrlTextbox = m.top.findNode("serverUrlTextbox")
  m.serverUrlContainer = m.top.findNode("serverUrlContainer")
  m.serverUrlOutline = m.top.findNode("serverUrlOutline")
  m.submit = m.top.findNode("submit")

  m.top.observeField("serverUrl", "clearErrorMessage")

  ScanForServers()
end sub

function onKeyEvent(key as string, press as boolean) as boolean
  m.log.debug("SetServerScreen onKeyEvent", key, press)

  if not press then return true
  handled = true

  if key = "OK" and m.serverPicker.hasFocus()
    m.top.serverUrl = m.serverPicker.content.getChild(m.serverPicker.itemFocused).baseUrl
    m.submit.setFocus(true)
    'if the user pressed the down key and we are already at the last child of server picker, then change focus to the url textbox
  else if key = "down" and m.serverPicker.hasFocus() and m.serverPicker.content.getChildCount() > 0 and m.serverPicker.itemFocused = m.serverPicker.content.getChildCount() - 1
    m.serverUrlContainer.setFocus(true)

    'user navigating up to the server picker from the input box (it's only focusable if it has items)
  else if key = "up" and m.serverUrlContainer.hasFocus() and m.servers.Count() > 0
    m.serverPicker.setFocus(true)
  else if key = "up" and m.serverUrlContainer.hasFocus() and m.servers.Count() = 0
    ScanForServers()
  else if key = "back" and m.serverUrlContainer.hasFocus() and m.servers.Count() > 0
    m.serverPicker.setFocus(true)
  else if key = "OK" and m.serverUrlContainer.hasFocus()
    ShowKeyboard()
  else if key = "back" and m.submit.hasFocus() and m.servers.Count() > 0
    m.serverPicker.setFocus(true)
  else if key = "back" and m.submit.hasFocus() and m.servers.Count() = 0
    m.serverUrlContainer.setFocus(true)
  else if key = "back" and m.serverUrlContainer.hasFocus() and m.servers.Count() = 0
    ScanForServers()
  else if key = "back" and m.serverPicker.hasFocus() and m.servers.Count() > 0
    ScanForServers()
    ' On "back" with or without available local servers, will rescan for servers
  else if key = "up" and m.submit.hasFocus()
    m.serverUrlContainer.setFocus(true)
    'focus the submit button from serverUrl
  else if key = "down" and m.serverUrlContainer.hasFocus()
    m.submit.setFocus(true)
  else if key = "options"
    if m.serverPicker.itemFocused >= 0 and m.serverPicker.itemFocused < m.serverPicker.content.getChildCount()
      serverName = m.serverPicker.content.getChild(m.serverPicker.itemFocused).name
      if m.servers.Count() > 0 and Instr(1, serverName, "Saved") > 0
        'Can only delete previously saved servers, not locally discovered ones
        'So if we are on a "Saved" item, let the options dialog be shown (handled elsewhere)
        handled = false
      end if
    end if
  else
    handled = false
  end if
  'show/hide input box outline
  m.serverUrlOutline.visible = m.serverUrlContainer.isInFocusChain()

  return handled
end function

sub ScanForServers()
  startLoadingSpinner(false)

  m.ssdpScanner = CreateObject("roSGNode", "ServerDiscoveryTask")
  'run the task
  m.ssdpScanner.observeField("content", "ScanForServersComplete")
  m.ssdpScanner.control = "RUN"
end sub

sub ScanForServersComplete(event)
  m.servers = event.getData()

  items = CreateObject("roSGNode", "ContentNode")
  stopLoadingSpinner()
  for each server in m.servers
    server.subtype = "ContentNode"
    'add new fields for every server property onto the ContentNode (rather than making a dedicated component just to hold data...)
    items.update([server], true)
  end for

  'load any previously logged in to servers as well (if they aren't already discovered on the local network)
  saved = get_setting("saved_servers")
  if saved <> invalid
    savedServers = ParseJson(saved)
    for each server in savedServers.serverList
      alreadyListed = false
      for each listed in m.servers
        if LCase(listed.baseUrl) = server.baseUrl 'saved server data is always lowercase
          alreadyListed = true
          exit for
        end if
      end for
      if alreadyListed = false
        items.update([server], true)
        m.servers.push(server)
      end if
    end for
  end if

  m.serverPicker.content = items

  'if we have at least one server, focus on the server picker
  if m.servers.Count() > 0
    m.serverPicker.setFocus(true)
    'no servers found...focus on the input textbox
  else
    m.serverUrlContainer.setFocus(true)
    'show/hide input box outline
    m.serverUrlOutline.visible = true
  end if

end sub

sub ShowKeyboard()
  dialog = createObject("roSGNode", "StandardKeyboardDialog")
  dialog.title = tr("Enter the server name or ip address")
  dialog.buttons = [tr("OK"), tr("Cancel")]
  dialog.text = m.serverUrlTextbox.text
  greenPalette = createObject("roSGNode", "RSGPalette")
  greenPalette.colors = { DialogBackgroundColor: "#2A2B2A" }
  dialog.palette = greenPalette

  m.top.getscene().dialog = dialog
  m.dialog = dialog

  dialog.observeField("buttonSelected", "onDialogButton")
end sub

function onDialogButton()
  d = m.dialog
  button_text = d.buttons[d.buttonSelected]

  if button_text = tr("OK")
    m.serverUrlTextbox.text = d.text
    m.dialog.close = true
    return true
  else if button_text = tr("Cancel")
    m.dialog.close = true
    return true
  else
    return false
  end if
end function

sub clearErrorMessage()
  m.top.errorMessage = ""
end sub

' JRScreen hook called when the screen is displayed by the screen manager
sub OnScreenShown()
  scene = m.top.getScene()
  overhang = scene.findNode("overhang")
  if isValid(overhang)
    overhang.isLogoVisible = true
    overhang.currentUser = ""
    overhang.title = ""
  end if
end sub