-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
awful.rules = require("awful.rules")
require("awful.autofocus")
-- Widget and layout library
local wibox = require("wibox")
-- Theme handling library
local beautiful = require("beautiful")
-- Notification library
local naughty = require("naughty")
local menubar = require("menubar")
-- Load Debian menu entries
require("debian.menu")

-- from https://github.com/tony/awesome-config/blob/master/helpers.lua

function file_exists(file)
   s = awful.util.pread("/bin/dash -c 'if [ -e " .. file .. " ]; then echo true; fi;'"):gsub("\n","")
   if s == 'true' then return true else return nil end
end


-- {{{ Variable definitions
-- Themes define colours, icons, and wallpapers
beautiful.init("/usr/share/awesome/themes/default/theme.lua")

-- local APW
-- if file_exists("apw/widget.lua") then
local APW = require("apw/widget")
-- end

-- local vicious
local vicious = require("vicious")

local cpuwidget = wibox.widget.textbox()
vicious.register(cpuwidget, vicious.widgets.cpu, "$1%CPU ")
local batwidget = wibox.widget.textbox()
if file_exists("/sys/class/power_supply/BAT1") then
   vicious.register(batwidget,vicious.widgets.bat," $2%$1 $3",120,"BAT1")
else
   vicious.register(batwidget,vicious.widgets.bat," $2%$1 $3",120,"BAT0")
end
-- This is used later as the default terminal and editor to run.
terminal = "x-terminal-emulator"
editor = os.getenv("EDITOR") or "editor"
editor_cmd = terminal .. " -e " .. editor
home = os.getenv("HOME")

hostname = awful.util.pread("hostname -f"):gsub("\n", "")

-- Default modkey.
-- Usually, Mod4 is the key with a logo between Control and Alt.
-- If you do not like this or do not have such a key,
-- I suggest you to remap Mod4 to another key using xmodmap or other tools.
-- However, you can use another modifier like Mod1, but it may interact with others.
modkey = "Mod4"

-- Table of layouts to cover with awful.layout.inc, order matters.
local layouts =
{
    awful.layout.suit.tile,
    awful.layout.suit.tile.left,
    awful.layout.suit.tile.bottom,
    awful.layout.suit.tile.top,
    awful.layout.suit.fair,
    awful.layout.suit.fair.horizontal,
    awful.layout.suit.spiral,
    awful.layout.suit.spiral.dwindle,
    awful.layout.suit.max,
    awful.layout.suit.max.fullscreen,
    awful.layout.suit.magnifier,
    awful.layout.suit.floating
}
-- }}}

-- {{{ Tags
-- Define a tag table which hold all screen tags.
tags = {names={"mail","emacs","www","remotes",5,6,7,8,9}
       }
for s = 1, screen.count() do
    -- Each screen has its own tag table.
   local defaultlayout=layouts[9]
   tags[s] = awful.tag(tags.names, s, defaultlayout)
end
-- }}}

-- {{{ Menu
-- Create a laucher widget and a main menu
myawesomemenu = {
   { "manual", terminal .. " -e man awesome" },
   { "edit config", editor_cmd .. " " .. awful.util.getdir("config") .. "/rc.lua" },
   { "restart", awesome.restart },
   { "quit", awesome.quit }
}

mymainmenu = awful.menu({ items = { { "awesome", myawesomemenu, beautiful.awesome_icon },
                                    { "Debian", debian.menu.Debian_menu.Debian },
                                    { "open terminal", terminal }
                                  }
                        })

mylauncher = awful.widget.launcher({ image = beautiful.awesome_icon,
                                     menu = mymainmenu })
-- }}}

-- {{{ Wibox
-- Create a textclock widget
mytextclock = awful.widget.textclock() --{ align = "right" }, " %c ", 1)

-- mybattery = obvious.battery()

-- mytemp = obvious.temp_info()

-- Create a wibox for each screen and add it
mywibox = {}
mypromptbox = {}
mylayoutbox = {}
mytaglist = {}
mytaglist.buttons = awful.util.table.join(
                    awful.button({ }, 1, awful.tag.viewonly),
                    awful.button({ modkey }, 1, awful.client.movetotag),
                    awful.button({ }, 3, awful.tag.viewtoggle),
                    awful.button({ modkey }, 3, awful.client.toggletag),
                    awful.button({ }, 4, awful.tag.viewnext),
                    awful.button({ }, 5, awful.tag.viewprev)
                    )
mytasklist = {}
mytasklist.buttons = awful.util.table.join(
                     awful.button({ }, 1, function (c)
                                              if not c:isvisible() then
                                                  awful.tag.viewonly(c:tags()[1])
                                              end
                                              client.focus = c
                                              c:raise()
                                          end),
                     awful.button({ }, 3, function ()
                                              if instance then
                                                  instance:hide()
                                                  instance = nil
                                              else
                                                  instance = awful.menu.clients({ width=250 })
                                              end
                                          end),
                     awful.button({ }, 4, function ()
                                              awful.client.focus.byidx(1)
                                              if client.focus then client.focus:raise() end
                                          end),
                     awful.button({ }, 5, function ()
                                              awful.client.focus.byidx(-1)
                                              if client.focus then client.focus:raise() end
                                          end))

for s = 1, screen.count() do
    -- Create a promptbox for each screen
    mypromptbox[s] = awful.widget.prompt()
    -- Create an imagebox widget which will contains an icon indicating which layout we're using.
    -- We need one layoutbox per screen.
    mylayoutbox[s] = awful.widget.layoutbox(s)
    mylayoutbox[s]:buttons(awful.util.table.join(
                           awful.button({ }, 1, function () awful.layout.inc(layouts, 1) end),
                           awful.button({ }, 3, function () awful.layout.inc(layouts, -1) end),
                           awful.button({ }, 4, function () awful.layout.inc(layouts, 1) end),
                           awful.button({ }, 5, function () awful.layout.inc(layouts, -1) end)))
    -- Create a taglist widget
    mytaglist[s] = awful.widget.taglist(s, awful.widget.taglist.filter.all, mytaglist.buttons)

    -- Create a tasklist widget
    mytasklist[s] = awful.widget.tasklist(s, awful.widget.tasklist.filter.currenttags, mytasklist.buttons)

    -- Create the wibox
    mywibox[s] = awful.wibox({ position = "top", screen = s })

    -- Widgets that are aligned to the left
    local left_layout = wibox.layout.fixed.horizontal()
    left_layout:add(mylauncher)
    left_layout:add(mytaglist[s])
    left_layout:add(mypromptbox[s])

    -- Widgets that are aligned to the right
    local right_layout = wibox.layout.fixed.horizontal()
    if s == 1 then right_layout:add(wibox.widget.systray()) end
    
    right_layout:add(cpuwidget)
    right_layout:add(batwidget)
    right_layout:add(mytextclock)
    right_layout:add(mylayoutbox[s])

    -- Now bring it all together (with the tasklist in the middle)
    local layout = wibox.layout.align.horizontal()
    layout:set_left(left_layout)
    layout:set_middle(mytasklist[s])
    layout:set_right(right_layout)

    mywibox[s]:set_widget(layout)
end
-- }}}

-- {{{ Mouse bindings
root.buttons(awful.util.table.join(
    awful.button({ }, 3, function () mymainmenu:toggle() end),
    awful.button({ }, 4, awful.tag.viewnext),
    awful.button({ }, 5, awful.tag.viewprev)
))
-- }}}

-- {{{ Key bindings
globalkeys = awful.util.table.join(
    -- awful.key({ modkey,           }, "Left",   awful.tag.viewprev       ),
    -- awful.key({ modkey,           }, "Right",  awful.tag.viewnext       ),
   awful.key({},"XF86AudioRaiseVolume",APW.Up),
   awful.key({},"XF86AudioLowerVolume",APW.Down),
   awful.key({},"XF86RotateWindows", function () awful.util.spawn("rotate_monitor") end),
   awful.key({},"XF86MonBrightnessUp",function() awful.util.spawn("xbacklight -inc 5") end),
   awful.key({},"XF86MonBrightnessDown",function() awful.util.spawn("xbacklight -dec 5") end),
    awful.key({ modkey,           }, "Escape", awful.tag.history.restore),

    awful.key({ modkey,           }, "j",
        function ()
            awful.client.focus.byidx( 1)
            if client.focus then client.focus:raise() end
	    warp_mouse()
        end),
    awful.key({ modkey,           }, "k",
        function ()
            awful.client.focus.byidx(-1)
            if client.focus then client.focus:raise() end
	    warp_mouse()
        end),
    awful.key({ modkey,           }, "w", function () mymainmenu:show({keygrabber=true}) end),

    -- Layout manipulation
    awful.key({ modkey, "Shift"   }, "j", function () awful.client.swap.byidx(  1)    end),
    awful.key({ modkey, "Shift"   }, "k", function () awful.client.swap.byidx( -1)    end),
    awful.key({ modkey,           }, "Left", function () awful.screen.focus_relative( 1) end),
    awful.key({ modkey,           }, "Right", function () awful.screen.focus_relative(-1) end),
    awful.key({ modkey,           }, "u", awful.client.urgent.jumpto),
    awful.key({ modkey,           }, "Tab",
              function ()
                 -- awful.client.focus.history.previous()
                 awful.client.focus.byidx(-1)
                 if client.focus then
                    client.focus:raise()
                 end
              end),
    
    awful.key({ modkey, "Shift"   }, "Tab",
              function ()
                 -- awful.client.focus.history.previous()
                 awful.client.focus.byidx(1)
                 if client.focus then
                    client.focus:raise()
                 end
              end),
    -- Standard program
    awful.key({ modkey,           }, "Return", function () awful.util.spawn(terminal) end),
    awful.key({ modkey, "Control", "Shift" }, "r", awesome.restart),
    awful.key({ modkey, "Control", "Shift"   }, "q", awesome.quit),

    awful.key({ modkey,           }, "l",     function () awful.tag.incmwfact( 0.05)    end),
    awful.key({ modkey,           }, "h",     function () awful.tag.incmwfact(-0.05)    end),
    awful.key({ modkey, "Shift"   }, "h",     function () awful.tag.incnmaster( 1)      end),
    awful.key({ modkey, "Shift"   }, "l",     function () awful.tag.incnmaster(-1)      end),
    awful.key({ modkey, "Control" }, "h",     function () awful.tag.incncol( 1)         end),
    awful.key({ modkey, "Control" }, "l",     function () awful.tag.incncol(-1)         end),
    awful.key({ modkey,           }, "n", function () awful.layout.inc(layouts,  1) end),
    awful.key({ modkey, "Shift"   }, "n", function () awful.layout.inc(layouts, -1) end),

    -- resize floats
    awful.key({ modkey, "Control" }, "Down",  function () awful.client.moveresize(0, 20, 0, 0) end),
    awful.key({ modkey, "Control" }, "Up",    function () awful.client.moveresize(0, -20, 0, 0) end),
    awful.key({ modkey, "Control" }, "Left",  function () awful.client.moveresize(-20, 0, 0, 0) end),
    awful.key({ modkey, "Control" }, "Right", function () awful.client.moveresize(20, 0, 0, 0) end),
    awful.key({ modkey, "Control" , "Shift" }, "Down",  function () awful.client.moveresize(0, 0, 0, -20) end),
    awful.key({ modkey, "Control" , "Shift" }, "Up",    function () awful.client.moveresize(0, 0, 0, 20) end),
    awful.key({ modkey, "Control" , "Shift" }, "Left",  function () awful.client.moveresize(0, 0, -20, 0) end),
    awful.key({ modkey, "Control" , "Shift" }, "Right", function () awful.client.moveresize(0, 0, 20, 0) end),
   -- Prompt
    awful.key({ modkey },            "r",     function () mypromptbox[mouse.screen]:run() end),

    awful.key({ modkey }, "x",
              function ()
                  awful.prompt.run({ prompt = "Run Lua code: " },
                  mypromptbox[mouse.screen].widget,
                  awful.util.eval, nil,
                  awful.util.getdir("cache") .. "/history_eval")
              end)
)

clientkeys = awful.util.table.join(
    awful.key({ modkey,           }, "f",      function (c) c.fullscreen = not c.fullscreen  end),
    awful.key({ modkey, "Shift"   }, "c",      function (c) c:kill()                         end),
    awful.key({ modkey, "Control" }, "space",  awful.client.floating.toggle                     ),
    awful.key({ modkey,           }, "space", function (c) c:swap(awful.client.getmaster()) end),
    awful.key({ modkey,           }, "o",      awful.client.movetoscreen                        ),
    awful.key({ modkey, "Shift"   }, "Right",  function(c) awful.client.movetoscreen(c,c.screen-1 % screen.count())      end),
    awful.key({ modkey, "Shift"   }, "Left",   function(c) awful.client.movetoscreen(c,c.screen+1 % screen.count())     end),
    awful.key({ modkey,           }, "t",      function (c) c.ontop = not c.ontop            end),
    awful.key({ modkey, "Shift"   }, "r",      function (c) c:redraw()                       end),
    awful.key({ modkey, "Shift"   }, "m",      function (c) c.minimized = not c.minimized    end),
    awful.key({ modkey,           }, "m",
        function (c)
            c.maximized_horizontal = not c.maximized_horizontal
            c.maximized_vertical   = not c.maximized_vertical
        end)
)

-- Compute the maximum number of digit we need, limited to 9
keynumber = 0
for s = 1, screen.count() do
   keynumber = math.min(9, math.max(#tags[s], keynumber));
end

-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it works on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, keynumber do
    globalkeys = awful.util.table.join(globalkeys,
        awful.key({ modkey }, "#" .. i + 9,
                  function ()
                        local screen = mouse.screen
                        if tags[screen][i] then
                            awful.tag.viewonly(tags[screen][i])
                        end
                  end),
        awful.key({ modkey, "Control" }, "#" .. i + 9,
                  function ()
                      local screen = mouse.screen
                      if tags[screen][i] then
                          awful.tag.viewtoggle(tags[screen][i])
                      end
                  end),
        awful.key({ modkey, "Shift" }, "#" .. i + 9,
                  function ()
                      if client.focus and tags[client.focus.screen][i] then
                          awful.client.movetotag(tags[client.focus.screen][i])
                      end
                  end),
        awful.key({ modkey, "Control", "Shift" }, "#" .. i + 9,
                  function ()
                      if client.focus and tags[client.focus.screen][i] then
                          awful.client.toggletag(tags[client.focus.screen][i])
                      end
                  end))
end

clientbuttons = awful.util.table.join(
    awful.button({ }, 1, function (c) client.focus = c; c:raise() end),
    awful.button({ modkey }, 1, awful.mouse.client.move),
    awful.button({ modkey }, 3, awful.mouse.client.resize))

-- Set keys
root.keys(globalkeys)
-- }}}

-- {{{ Rules
awful.rules.rules = {
    -- All clients will match this rule.
    { rule = { },
      properties = { border_width = beautiful.border_width,
                     border_color = beautiful.border_normal,
                     focus = true,
                     keys = clientkeys,
                     buttons = clientbuttons } },
    { rule = { class = "MPlayer" },
      properties = { floating = true , ontop=true } },
    { rule = { class = "pinentry" },
      properties = { floating = true , ontop=true } },
    { rule = { class = "gimp" },
      properties = { floating = true } },
    -- Set Firefox to always map on tags number 2 of screen 1.
    -- { rule = { class = "Firefox" },
    --   properties = { tag = tags[1][2] } },
}
-- }}}

-- {{{ Signals
-- Signal function to execute when a new client appears.
client.add_signal("manage", function (c, startup)
    -- Add a titlebar
    -- awful.titlebar.add(c, { modkey = modkey })

    -- Enable sloppy focus
    c:add_signal("mouse::enter", function(c)
        if awful.layout.get(c.screen) ~= awful.layout.suit.magnifier
            and awful.client.focus.filter(c) then
            client.focus = c
        end
    end)

    if not startup then
        -- Set the windows at the slave,
        -- i.e. put it at the end of others instead of setting it master.
        -- awful.client.setslave(c)

        -- Put windows in a smart way, only if they does not set an initial position.
        if not c.size_hints.user_position and not c.size_hints.program_position then
            awful.placement.no_overlap(c)
            awful.placement.no_offscreen(c)
        end
    end
end)

function warp_mouse()
    c = client.focus
    if c then
        local g = c:geometry()
        mouse.coords({ x = g.x + 1, y = g.y + 1}, true)
    end
end

-- for s = 1, screen.count() do
--     screen[s]:add_signal("arrange", function (screen)
--         warp_mouse(screen)
--     end)
-- end


client.add_signal("focus", function(c) c.border_color = beautiful.border_focus end)
client.add_signal("unfocus", function(c) c.border_color = beautiful.border_normal end)
-- }}}


wallpaper_dir = home .. "/media/background"
if (not file_exists(wallpaper_dir)) then
   wallpaper_dir = "/usr/share/awesome/themes/default/background.png"
end

wallpaper_cmd = "find " .. wallpaper_dir ..
   " -xtype f \\( -iname '*.jpg' -o -iname '*.png' \\) " ..
   " -not -name '.*' -print0 | shuf -n" .. screen.count() .. " -z | xargs -0 feh --draw-exif -d --bg-max"

-- set up the wallpaper timer
-- wallpaper_timer = timer({ timeout = 0 })
-- wallpaper_timer:add_signal("timeout",
--   function()
--      -- tell awsetbg to randomly choose a wallpaper from your wallpaper directory
--      os.execute(wallpaper_cmd)
--      -- stop the timer (we don't need multiple instances running at the same time)
--      wallpaper_timer:stop()
--      
--      -- define the interval in which the next wallpaper change should occur in seconds
--      -- (in this case anytime between 10 and 20 minutes)
--      --restart the timer
--      wallpaper_timer.timeout = math.random(600,1200)
--      wallpaper_timer:start()
--   end
-- )
-- wallpaper_timer:start();