local awful = require("awful")
local wibox = require("wibox")
local gears = require("gears")
local beautiful = require("beautiful")
local longpress = require("awesome-longpress")
local switcherpopup = {
  iconSize = 128,
  systraySize = 64,
  buttonSize = 96,
  spacing = 5,
  defaultLayout = awful.layout.suit.max,
  iconPath = gears.filesystem.get_configuration_dir() .. "/awesome-switcherpopup/",
  batteryPath = "/sys/class/power_supply/pad-battery/"
}
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.textclock("%H:%M %Y-%m-%d"), "center", "center")
  local tagindex = wibox.widget({widget = wibox.widget.textbox, align = "center"})
  local function updateSwitcherpopup()
    tagindex.text = "Tag: "..tostring(awful.screen.focused().selected_tag.name)
    local fp, fs = io.open(switcherpopup.batteryPath .. "/capacity","rb"), io.open(switcherpopup.batteryPath .. "/status","rb")
    if fp and fs then
      local status = fs:read()
      tagindex.text = string.format("Battery: %s%%%s\n%s", fp:read(), status == "Charging" and "+" or "-", tagindex.text)
      fp:close()
      fs:close()
    end
    tasklistWidget:reset()
    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 function pictureButton(icon)
    local rc = wibox.container.place(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), "center", "top")
    rc.content_fill_vertical = true
    rc.content_fill_horizontal = true
    return rc
  end
  local close_button = pictureButton("window-close.svg")
  close_button:buttons(gears.table.join(
    close_button:buttons(),
    awful.button({}, 1, nil, function()
      if s.clients[1] then
        s.clients[1]:kill()
        popup.visible = false
      end
    end)
  ))
  local create_tag_button = pictureButton("tag-create.svg")
  create_tag_button:buttons(gears.table.join(
    create_tag_button:buttons(),
    awful.button({}, 1, nil, 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")
  destroy_tag_button:buttons(gears.table.join(
    destroy_tag_button:buttons(),
    awful.button({}, 1, nil, function()
      if #s.tags > 1 then
        s.selected_tag:delete()
        popup.visible = false
      end
    end)
  ))
  local prev_tag_button = pictureButton("go-previous.svg")
  longpress.add(prev_tag_button, 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")
  longpress.add(next_tag_button, 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
      error("move attempted")
    end
    error("move failed?")
  end)
  local tagbuttons = wibox.widget({layout = wibox.layout.ratio.horizontal, spacing=0, prev_tag_button,create_tag_button,destroy_tag_button,next_tag_button,close_button})
  systray:set_screen(s)
  systray:set_horizontal(true)
  popup = awful.popup {
    widget = {layout = wibox.layout.fixed.vertical, clock, tagindex, systray, tasklistWidget, wibox.container.constraint(tagbuttons, min, switcherpopup.buttonSize*5, switcherpopup.buttonSize)},
    border_color = beautiful.border_focus,
    border_width = 2,
    ontop        = true,
    placement    = awful.placement.centered,
    visible = false,
  }
  function popup.show(self)
    updateSwitcherpopup()
    self.visible = true
  end
  function popup.hide(self)
    self.visible = false
  end
  function popup.toggle(self)
    updateSwitcherpopup()
    self.visible = not self.visible 
  end
  return popup
end
return switcherpopup