local colors = require 'colors'
local icons = require 'icons'
local settings = require 'settings'

local menu_watcher = sbar.add('item', {
  drawing = false,
  updates = false,
})
local space_menu_swap = sbar.add('item', {
  drawing = false,
  updates = true,
})
sbar.add('event', 'swap_menus_and_spaces')

local max_items = 15
local menu_items = {}
for i = 1, max_items, 1 do
  local menu = sbar.add('item', 'menu.' .. i, {
    padding_left = settings.paddings,
    padding_right = settings.paddings,
    drawing = false,
    icon = { drawing = false },
    label = {
      font = {
        style = settings.font.style_map[i == 1 and 'Heavy' or 'Semibold'],
      },
      padding_left = 6,
      padding_right = 6,
    },
    click_script = 'sk-menus -s ' .. i,
  })

  menu_items[i] = menu
end

sbar.add('bracket', { '/menu\\..*/' }, {
  background = { color = colors.bg1 },
})

local menu_padding = sbar.add('item', 'menu.padding', {
  drawing = false,
  width = 5,
})

local function update_menus(env)
  sbar.exec('sk-menus -l', function(menus)
    sbar.set('/menu\\..*/', { drawing = false })
    menu_padding:set { drawing = true }
    id = 1
    for menu in string.gmatch(menus, '[^\r\n]+') do
      if id < max_items then
        menu_items[id]:set { label = menu, drawing = true }
      else
        break
      end
      id = id + 1
    end
  end)
end

menu_watcher:subscribe('front_app_switched', update_menus)

space_menu_swap:subscribe('swap_menus_and_spaces', function(env)
  local drawing = menu_items[1]:query().geometry.drawing == 'on'
  if drawing then
    menu_watcher:set { updates = false }
    sbar.set('/menu\\..*/', { drawing = false })
    sbar.set('/space\\..*/', { drawing = true })
    sbar.set('front_app', { drawing = true })
  else
    menu_watcher:set { updates = true }
    sbar.set('/space\\..*/', { drawing = false })
    sbar.set('front_app', { drawing = false })
    update_menus()
  end
end)

return menu_watcher