local awful = require("awful")
local wibox = require("wibox")
local gears = require("gears")
local beautiful = require("beautiful")
local longpress = require("awesome-longpress")
local batterystat = require("awesome-batterystat")
local memstat = require("awesome-memwidget")
local fswidget = require("awesome-fswidget")
local switcherpopup = {
  iconSize = 128,
  systraySize = 64,
  buttonSize = 96,
  spacing = 5,
  defaultLayout = awful.layout.suit.max,
  iconPath = gears.filesystem.get_configuration_dir() .. "/awesome-switcherpopup/",
}
function switcherpopup.nextTagName(s)
 print(#s.tags, #s.tags+1)
 return tostring(#s.tags+1)
end
local systray = wibox.widget.systray()
systray:set_base_size(switcherpopup.systraySize)
function switcherpopup.new(s)
  local popup = false
  local tasklistWidget = wibox.widget{
    screen = s,
    layout = wibox.layout.grid.vertical(math.floor(s.geometry.width / (switcherpopup.iconSize + switcherpopup.spacing)))
  }
  local clock = wibox.container.place(wibox.widget{
    layout = wibox.layout.fixed.vertical,
    wibox.widget{
      widget = wibox.widget.textbox,
      align = "center",
      text = "time"
    },
    wibox.widget{
      widget = wibox.widget.textbox,
      align = "center",
      text = "date"
    }
  })
  function clock.update(self)
    self.widget.children[1].markup = string.format('<span size="xx-large">%s</span>',os.date("%H:%M"))
    self.widget.children[2].markup = os.date("%Y-%m-%d")
  end
  local tagindex = wibox.widget({widget = wibox.widget.textbox, align = "center", valign = "center"})
  local indicators = wibox.widget({layout=wibox.layout.grid.horizontal, spacing=5, mem, battery})
  local unpack = unpack or table.unpack -- in Lua 5.1, table.unpack was just called 'unpack'
  for k,v in ipairs({memstat, batterystat, fswidget}) do
    indicators:add(unpack(v.all()))
  end
  local function updateSwitcherpopup()
    clock:update()
    tagindex.markup = '<span size="xx-large" color="'..tostring(beautiful.bg_normal)..'">'..tostring(awful.screen.focused().selected_tag.name)..'</span>'
    for k,v in ipairs(indicators.children) do
     pcall(v.update, v)
    end
    tasklistWidget:reset()
    tasklistWidget.forced_num_cols = math.min(math.floor(s.geometry.width / (switcherpopup.iconSize + switcherpopup.spacing)), #awful.screen.focused().selected_tag:clients())
    for k,v in pairs(awful.screen.focused().selected_tag:clients()) do
      local clientIcon = awful.widget.clienticon(v)
      clientIcon:set_forced_width(switcherpopup.iconSize)
      clientIcon:set_forced_height(switcherpopup.iconSize)
      clientName = wibox.container.constraint(wibox.widget{
        widget = wibox.widget.textbox,
        valign = center,
        halign = center,
        text = v.name
      },nil,switcherpopup.iconSize,switcherpopup.iconSize * 0.5)
      clientWidget = wibox.widget{
        layout = wibox.layout.fixed.vertical
      }
      clientWidget:add(clientIcon,clientName)
      clientWidget:buttons(gears.table.join(
        awful.button({ }, 1, function (c)
          v:raise()
          popup.visible = false
        end)))
      if v == client.focus then
        tasklistWidget:add(wibox.widget{wibox.container.constraint(clientWidget,nil,switcherpopup.iconSize,switcherpopup.iconSize * 1.5),bg=beautiful.get().tasklist_bg_focus or beautiful.get().bg_focus,widget=wibox.container.background})
      else
        tasklistWidget:add(wibox.container.constraint(clientWidget,nil,switcherpopup.iconSize,switcherpopup.iconSize * 1.5))
      end
    end
  end
  screen.connect_signal("arrange",updateSwitcherpopup)
  local updateTimer = gears.timer{
   timeout = 60,
   callback = updateSwitcherpopup
  }

  local function pictureButton(icon,fn,lfn)
    local rc = wibox.container.constraint(wibox.widget({
      widget=wibox.widget.imagebox,
      forced_width = switcherpopup.buttonSize,
      forced_height = switcherpopup.buttonSize,
      image = switcherpopup.iconPath .. "/" .. icon
    }),nil,switcherpopup.buttonSize,switcherpopup.buttonSize)
    longpress.add(rc,fn,lfn)
    return wibox.container.place(rc)
  end

  local close_button = pictureButton("window-close.svg",
    function()
      if s.clients[1] then
        s.clients[1]:kill()
        popup.visible = false
      end
    end
  )
  local create_tag_button = pictureButton("tag-create.svg",
    function()
      awful.tag.add(switcherpopup.nextTagName(s), {
        screen = s,
        layout = switcherpopup.defaultLayout
      }):view_only()
      popup.visible = false
    end
  )
  local destroy_tag_button = pictureButton("tag-destroy.svg",
    function()
      if #s.tags > 1 then
        s.selected_tag:delete()
        popup.visible = false
      end
    end
  )
  local prev_tag_button = pictureButton("go-previous.svg",
    function()
      awful.tag.viewprev(s)
      popup.visible = false
    end,
    function()
      if s.clients[1] and s.selected_tag then
        local nextTag = s.selected_tag.index-1
        if nextTag < 1 then nextTag = #s.tags end
        s.clients[1]:move_to_tag(s.tags[nextTag])
        popup.visible = false
        error("move attempted")
      end
      error("move failed?")
    end
  )
  local next_tag_button = pictureButton("go-next.svg",
    function()
      awful.tag.viewnext(s)
      popup.visible = false
    end,
    function()
      if s.clients[1] and s.selected_tag then
        local nextTag = s.selected_tag.index+1
        if nextTag > #s.tags then nextTag = 1 end
        s.clients[1]:move_to_tag(s.tags[nextTag])
        popup.visible = false
      end
    end
  )

  local tagbuttons = wibox.widget({layout = wibox.layout.grid.horizontal, prev_tag_button,create_tag_button,wibox.widget{layout=wibox.layout.stack, destroy_tag_button, tagindex},next_tag_button,close_button})
  systray:set_screen(s)
  systray:set_horizontal(true)
  popup = awful.popup {
    widget = {layout = wibox.layout.fixed.vertical, clock, wibox.container.place(indicators), wibox.container.place(systray), wibox.container.place(tasklistWidget), wibox.container.place(tagbuttons)},
    border_color = beautiful.border_focus,
    border_width = 2,
    ontop = true,
    placement = awful.placement.centered,
    visible = false,
  }
  function popup.show(self)
    updateSwitcherpopup()
    self.visible = true
    updateTimer:again()
  end
  function popup.hide(self)
    self.visible = false
    updateTimer:stop()
  end
  function popup.toggle(self)
    updateSwitcherpopup()
    self.visible = not self.visible 
    if self.visible then
      updateTimer:again()
    else
      updateTimer:stop()
    end
  end
  return popup
end
return switcherpopup