local Craft  = require('craft2')
local Milo   = require('milo')
local UI     = require('ui')
local Util   = require('util')

local colors  = _G.colors
local context = Milo:getContext()
local device  = _G.device

local page = UI.Page {
  titleBar = UI.TitleBar { title = 'Reassign Machine' },
  grid = UI.ScrollingGrid {
    y = 2, ey = -4,
    values = context.storage.nodes,
    columns = {
      {                   key = 'suffix',     width = 4, justify = 'right' },
      { heading = 'Name', key = 'displayName' },
      { heading = 'Type', key = 'mtype',      width = 4 },
      { heading = 'Pri',  key = 'priority',   width = 3 },
    },
    sortColumn = 'displayName',
    help = 'Select Node',
  },
  accept = UI.Button {
    x = -9, y = -2,
    event = 'grid_select',
    text = 'Accept',
  },
  cancel = UI.Button {
    x = -18, y = -2,
    event = 'cancel',
    text = 'Cancel',
  },
  accelerators = {
    grid_select = 'nextView',
  },
  notification = UI.Notification { },
}

function page.grid:getDisplayValues(row)
  row = Util.shallowCopy(row)
  local t = { row.name:match(':(.+)_(%d+)$') }
  if #t ~= 2 then
    t = { row.name:match('(.+)_(%d+)$') }
  end
  if t and #t == 2 then
    row.name, row.suffix = table.unpack(t)
    row.name = row.name .. '_' .. row.suffix
  end
  row.displayName = row.displayName or row.name
  return row
end

function page.grid:getRowTextColor(row, selected)
  if row.mtype == 'ignore' then
    return colors.lightGray
  end
  return UI.Grid:getRowTextColor(row, selected)
end

function page:applyFilter()
  local t = Util.filter(context.storage.nodes, function(v)
    return v.mtype == 'ignore' and device[v.name]
  end)

  self.grid:setValues(t)
end

function page:enable(machine)
  self.machine = machine
  self:applyFilter()

  UI.Page.enable(self)
end

function page:eventHandler(event)
  if event.type == 'grid_select' then
    local target = self.grid:getSelected()
    if target then
      local adapter = target.adapter
      local name = target.name
      Util.merge(target, self.machine)
      target.adapter = adapter
      target.name = name

      context.storage.nodes[self.machine.name] = nil
      context.storage:saveConfiguration()

      for k,v in pairs(Craft.machineLookup) do
        if v == self.machine.name then
          Craft.machineLookup[k] = name
        end
        Util.writeTable(Craft.MACHINE_LOOKUP, Craft.machineLookup)
      end

      UI:setPreviousPage()
    end

  elseif event.type == 'cancel' then
    UI:setPreviousPage()

  else
    return UI.Page.eventHandler(self, event)
  end
end

UI:addPage('machineMover', page)