local Config = require('config')
local UI     = require('ui')

local os     = _G.os

local config = Config.load('store')

local storeTab = UI.Window {
  tabTitle = 'Store',
  index = 6,
  form = UI.Form {
    x = 2, ex = -2, y = 2, ey = -2,
    manualControls = true,
    [1] = UI.TextEntry {
      formLabel = 'Name', formKey = 'name',
      help = 'Unique name used when paying for an item',
      required = true,
      width = 16,
      limit = 64,
    },
    [2] = UI.TextEntry {
      width = 6,
      formLabel = 'Price', formKey = 'price',
      help = 'Per item cost',
      required = true,
      validate = 'numeric',
    },
    clearButton = UI.Button {
      x = 2, y = -2,
      event = 'clear',
      text = 'Remove',
    },
    updateButton = UI.Button {
      x = -12, y = -2,
      event = 'update',
      text = 'Update',
    },
  },
}

function storeTab:setItem(item)
  self.item = item
  self.form:setValues(config[item.key] or { })
end

function storeTab:eventHandler(event)
  if event.type == 'clear' then
    self.form:setValues({ })
    config[self.item.key] = nil
    Config.update('store', config)
    os.queueEvent('store_refresh')
    self.form:draw()

  elseif event.type == 'update' then
    if self.form:save() then
      config[self.item.key] = self.form.values
      Config.update('store', config)
      os.queueEvent('store_refresh')
      self:emit({ type = 'success_message', message = 'Updated' })
    end
  else
    return
  end
  return true
end

return storeTab