-- Standard awesome library
local gears = require("gears")
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")

-- {{{ Error handling
if awesome.startup_errors then
  naughty.notify({
    preset = naughty.config.presets.critical,
    title = "Oops, there were errors during startup!",
    text = awesome.startup_errors
  })
end

function move(c)
  local n
  local border = 2*beautiful.border_width
  if awful.client.floating.get(c) then
    n = naughty.notify({screen=mouse.screen, title="move floating", timeout=0})
    grabber = awful.keygrabber.run(
      function(mod, key, event)
        if event == "release" then return end

        local g = c:geometry()
        local w = screen[c.screen].workarea
        m = 100
        local step = {}
        local step_max = {
          g.x - w.x,
          g.y - w.y,
          w.x + w.width - (g.x + g.width) - border,
          w.y + w.height - (g.y + g.height) - border
        }

        for i=1, #step_max do
          if step_max[i] > m then
            step[i] = m
          else
            step[i] = step_max[i]
          end
        end

        if     key == 'h'       then awful.client.moveresize(-step[1], 0, 0, 0, c)
        elseif key == 'j'       then awful.client.moveresize(0, step[4], 0, 0, c)
        elseif key == 'k'       then awful.client.moveresize(0, -step[2], 0, 0, c)
        elseif key == 'l'       then awful.client.moveresize(step[3], 0, 0, 0, c)
        elseif key == 'H'       then awful.client.moveresize(-step_max[1], 0, 0, 0, c)
        elseif key == 'J'       then awful.client.moveresize(0, step_max[4], 0, 0, c)
        elseif key == 'K'       then awful.client.moveresize(0, -step_max[2], 0, 0, c)
        elseif key == 'L'       then awful.client.moveresize(step_max[3], 0, 0, 0, c)
        elseif key == 'Shift_L' then return
        else                         awful.keygrabber.stop(grabber)
                                     naughty.destroy(n)
        end
      end)
    end
end

function resize(c)
  local n
  local border = 2*beautiful.border_width
  if awful.client.floating.get(c) then
    n = naughty.notify({screen=mouse.screen, title="resize floating", timeout=0})
    grabber = awful.keygrabber.run(
      function(mod, key, event)
        if event == "release" then return end

        local g = c:geometry()
        local w = screen[c.screen].workarea
        local m = 100
        local min = 100
        local step_max = {
          x0 = g.x - w.x,
          x1 = w.x + w.width - (g.x + g.width + border),
          y0 = g.y - w.y,
          y1 = w.y + w.height - (g.y + g.height + border)
        }
        local step_min = {
          w = g.width - min,
          h = g.height - min
        }
        local step_inc = {
          x0 = (m < step_max.x0) and m or step_max.x0,
          x1 = (m < step_max.x1) and m or step_max.x1,
          y0 = (m < step_max.y0) and m or step_max.y0,
          y1 = (m < step_max.y1) and m or step_max.y1
        }
        local step_dec = {
          x = (m < step_min.w) and m or step_min.w,
          y = (m < step_min.h) and m or step_min.h
        }

        if     key == 'h'       then awful.client.moveresize(-step_inc.x0, 0, step_inc.x0, 0, c)
        elseif key == 'j'       then awful.client.moveresize(0, 0, 0, step_inc.y1, c)
        elseif key == 'k'       then awful.client.moveresize(0, -step_inc.y0, 0, step_inc.y0, c)
        elseif key == 'l'       then awful.client.moveresize(0, 0, step_inc.x1, 0, c)
        elseif key == 'H'       then awful.client.moveresize(step_dec.x, 0, -step_dec.x, 0, c)
        elseif key == 'J'       then awful.client.moveresize(0, 0, 0, -step_dec.y, c)
        elseif key == 'K'       then awful.client.moveresize(0, step_dec.y, 0, -step_dec.y, c)
        elseif key == 'L'       then awful.client.moveresize(0, 0, -step_dec.x, 0, c)
        elseif key == 'Shift_L' then return
        else                         awful.keygrabber.stop(grabber)
                                     naughty.destroy(n)
        end
      end)
  else
    n = naughty.notify({screen=mouse.screen, title="resize tiling"})
    grabber = awful.keygrabber.run(
      function(mod, key, event)
        if event == "release" then return end

        if     key == 'h'       then awful.tag.incmwfact(-0.05)
        elseif key == 'j'       then awful.client.incwfact(0.05)
        elseif key == 'k'       then awful.client.incwfact(-0.05)
        elseif key == 'l'       then awful.tag.incmwfact(0.05)
        else                         awful.keygrabber.stop(grabber)
                                     naughty.destroy(n)
        end
      end)
    end
end


-- Handle runtime errors after startup
do
  local in_error = false
  awesome.connect_signal("debug::error", function (err)
    -- Make sure we don't go into an endless error loop
    if in_error then return end
    in_error = true

    naughty.notify({
      preset = naughty.config.presets.critical,
      title = "Oops, an error happened!",
      text = err })
    in_error = false
  end)
end
-- }}}

-- {{{ Variable definitions
settings = {}
-- This is used later as the default settings.terminal and settings.editor to run.
settings.host = awful.util.pread("hostname | tr -d '\n'")
settings.terminal = "termite"
settings.editor = "vim"
settings.terminal_cmd = settings.terminal .. " -e "
settings.editor_cmd = settings.terminal_cmd .. settings.editor
-- Default modkey
settings.mod = "Mod4"
settings.home = awful.util.pread("echo $HOME | tr -d '\n'")
settings.timeout = 5
settings.bat = "BAT0"
if settings.host == "silence" then
  settings.bat = "BAT1"
end
-- Themes define colours, icons, and wallpapers
beautiful.init(awful.util.getdir("config") .."/themes/solarized/theme.lua")
--functions.init({beautiful=beautiful})



-- Table of layouts to cover with awful.layout.inc, order matters.
awful.layout.layouts = {
  -- awful.layout.suit.floating,
  awful.layout.suit.tile,
  awful.layout.suit.tile.left,
  awful.layout.suit.tile.bottom,
  awful.layout.suit.tile.top,
  awful.layout.suit.max,
}
-- }}}

-- {{{ Wallpaper
if beautiful.wallpaper then
  for s = 1, screen.count() do
    gears.wallpaper.maximized(beautiful.wallpaper, s, true)
  end
end
-- }}}

-- {{{ Tags
-- Define a tag table which hold all screen tags.
tags = {}
for s = 1, screen.count() do
  -- Each screen has its own tag table.
  tags[s] = awful.tag({ 1, 2, 3, 4, 5, 6, 7, 8, 9 }, s, awful.layout.layouts[1])
end
-- }}}

-- Menubar configuration
menubar.utils.terminal = settings.terminal
-- }}}

-- {{{ Wibox
-- Create a textclock widget
w = {}
w.textclock = awful.widget.textclock()

-- Create a wibox for each screen and add it
mywibox = {}
mylayoutbox = {}
mytaglist = {}
mytaglist.buttons = awful.util.table.join(
  awful.button({ }, 1, awful.tag.viewonly),
  awful.button({ settings.mod }, 1, awful.client.movetotag),
  awful.button({ }, 3, awful.tag.viewtoggle),
  awful.button({ settings.mod }, 3, awful.client.toggletag),
  awful.button({ }, 4, function(t) awful.tag.viewnext(awful.tag.getscreen(t)) end),
  awful.button({ }, 5, function(t) awful.tag.viewprev(awful.tag.getscreen(t)) end) )
mytasklist = {}
mytasklist.buttons = awful.util.table.join(
  awful.button({ }, 1, function (c)
    if c == client.focus then
      c.minimized = true
    else
      -- Without this, the following
      -- :isvisible() makes no sense
      c.minimized = false
      if not c:isvisible() then
        awful.tag.viewonly(c:tags()[1])
      end
      -- This will also un-minimize
      -- the client, if needed
      client.focus = c
      c:raise()
    end
  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
  -- 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(awful.layout.layouts, 1) end),
    awful.button({ }, 3, function () awful.layout.inc(awful.layout.layouts,-1) end),
    awful.button({ }, 4, function () awful.layout.inc(awful.layout.layouts, 1) end),
    awful.button({ }, 5, function () awful.layout.inc(awful.layout.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 w.mpd then
--    right_layout:add(w.mpd)
--  end
--  right_layout:add(w.load)
--  right_layout:add(w.mem)
--  if w.bat then
--    right_layout:add(w.bat)
--  end
  if s == 1 then right_layout:add(wibox.widget.systray()) end
  right_layout:add(w.textclock)
  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
-- }}}

-- {{{ Key bindings
globalkeys = awful.util.table.join(
  -- focus by direction
  awful.key({ settings.mod,           }, "h",
 function ()
      awful.client.focus.global_bydirection("left")
      if client.focus then client.focus:raise() end
    end),
  awful.key({ settings.mod,           }, "j",
 function ()
      --awful.client.focus.byidx( 1)
      awful.client.focus.global_bydirection("down")
      if client.focus then client.focus:raise() end
    end),
  awful.key({ settings.mod,           }, "k",
 function ()
      --awful.client.focus.byidx(-1)
      awful.client.focus.global_bydirection("up")
      if client.focus then client.focus:raise() end
    end),
  awful.key({ settings.mod,           }, "l",
 function ()
      awful.client.focus.global_bydirection("right")
      if client.focus then client.focus:raise() end
    end),
  -- focus urgent, focus next
  awful.key({ settings.mod,           }, "u", awful.client.urgent.jumpto),
  awful.key({ settings.mod,           }, "Tab", function ()
    awful.client.focus.byidx(1)
    if client.focus then client.focus:raise() end
  end),

  -- Layout manipulation
  awful.key({ settings.mod, "Shift"   }, "h", function () awful.client.swap.global_bydirection("left")   end),
  awful.key({ settings.mod, "Shift"   }, "j", function () awful.client.swap.global_bydirection("down")   end),
  awful.key({ settings.mod, "Shift"   }, "k", function () awful.client.swap.global_bydirection("up")     end),
  awful.key({ settings.mod, "Shift"   }, "l", function () awful.client.swap.global_bydirection("right")  end),
  awful.key({ settings.mod,           }, "w", function () mymainmenu:toggle() end),

  -- Standard program
  awful.key({ settings.mod,           }, "Return", function () awful.util.spawn(settings.terminal) end),
  awful.key({ settings.mod, "Control" }, "r", awesome.restart),
  awful.key({ settings.mod, "Control" }, "q", awesome.quit),

  awful.key({ settings.mod, "Control" }, "j", function () awful.tag.incnmaster( 1) end),
  awful.key({ settings.mod, "Control" }, "k", function () awful.tag.incnmaster(-1) end),
  awful.key({ settings.mod,           }, "space", function () awful.layout.inc(awful.layout.layouts, 1) end),
  awful.key({ settings.mod, "Shift"   }, "space", function () awful.layout.inc(awful.layout.layouts, -1) end),

  awful.key({ settings.mod, "Control" }, "n", awful.client.restore),

  -- Menubar
  awful.key({ settings.mod            }, "p", function () menubar.show() end),

  -- Media XF86
  awful.key({                         }, "XF86AudioMute",        function () awful.util.spawn(settings.home .."/bin/set_volume toggle", false) end),
  awful.key({                         }, "XF86AudioLowerVolume", function () awful.util.spawn(settings.home .."/bin/set_volume decrease", false) end),
  awful.key({                         }, "XF86AudioRaiseVolume", function () awful.util.spawn(settings.home .."/bin/set_volume increase", false) end),
  awful.key({                         }, "XF86AudioStop",  function () awful.util.spawn(settings.home .."/bin/notify_mpd stop", false) end),
  awful.key({                         }, "XF86AudioPrev", function () awful.util.spawn(settings.home .."/bin/notify_mpd prev", false) end),
  awful.key({                         }, "XF86AudioPlay", function () awful.util.spawn(settings.home .."/bin/notify_mpd toggle", false) end),
  awful.key({                         }, "XF86AudioNext", function () awful.util.spawn(settings.home .."/bin/notify_mpd next", false) end),

  -- Media fake WASD
  awful.key({ settings.mod            }, "Pause",  function () awful.util.spawn(settings.home .."/bin/notify_volume toggle", false) end),
  awful.key({ settings.mod            }, "Next",  function () awful.util.spawn(settings.home .."/bin/notify_volume decrease", false) end),
  awful.key({ settings.mod            }, "Prior",  function () awful.util.spawn(settings.home .."/bin/notify_volume increase", false) end),

  awful.key({ settings.mod            }, "Insert", function () awful.util.spawn(settings.home .."/bin/notify_mpd toggle", false) end),
  awful.key({ settings.mod            }, "Home",  function () awful.util.spawn(settings.home .."/bin/notify_mpd stop", false) end),
  awful.key({ settings.mod            }, "Delete", function () awful.util.spawn(settings.home .."/bin/notify_mpd prev", false) end),
  awful.key({ settings.mod            }, "End", function () awful.util.spawn(settings.home .."/bin/notify_mpd next", false) end),

  -- Power
  awful.key({ settings.mod,         }, "Scroll_Lock", function ()
    awful.util.spawn(settings.home .."/bin/mpc stop", false)
    awful.util.spawn("light-locker-command -l", false)
  end),
  awful.key({ settings.mod, "Control" }, "Scroll_Lock", function ()
    awful.util.spawn(settings.home .."/bin/mpc stop", false)
    awful.util.spawn("systemctl suspend -i", false)
  end),
  awful.key({ settings.mod, "Control" }, "s", function () awful.util.spawn(config .. "/../../bin/i3lock") end)
)

clientkeys = awful.util.table.join(
  awful.key({ settings.mod,           }, "f", function (c) c.fullscreen = not c.fullscreen  end),
  awful.key({ settings.mod, "Control" }, "c", function (c) c:kill()             end),
  awful.key({ settings.mod, "Control" }, "space", function(c)
    awful.client.floating.toggle()
    if awful.client.floating.get(c) then
      awful.titlebar.show(c)
      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
    else
      awful.titlebar.hide(c)
    end
  end),
  awful.key({ settings.mod, "Control" }, "Return", function (c) c:swap(awful.client.getmaster()) end),
  awful.key({ settings.mod, "Control" }, "+", function () awful.util.spawn("/usr/bin/compton-trans -c +5", false) end),
  awful.key({ settings.mod, "Control" }, "-", function () awful.util.spawn("/usr/bin/compton-trans -c -- -5", false) end),
  awful.key({ settings.mod, "Control" }, "Home", function () awful.util.spawn("/usr/bin/xbacklight -inc 5", false) end),
  awful.key({ settings.mod, "Control" }, "End", function () awful.util.spawn("/usr/bin/xbacklight -dec 5", false) end),
  awful.key({ settings.mod,           }, "o", function (c) awful.client.movetoscreen(c, mouse.screen +1) end),
  awful.key({ settings.mod, "Shift"   }, "o", function (c) awful.client.movetoscreen(c, mouse.screen -1) end),
  awful.key({ settings.mod,           }, "t", function (c) awful.titlebar.toggle(c) end),
  awful.key({ settings.mod, "Shift"   }, "t", function (c) c.ontop = not c.ontop end),
  awful.key({ settings.mod, "Control" }, "t", function (c) c.sticky =  not c.sticky end),
  awful.key({ settings.mod,           }, "n", function (c) c.minimized = true end),
  awful.key({ settings.mod,           }, "m", function (c)
    c.maximized_horizontal = not c.maximized_horizontal
    c.maximized_vertical   = not c.maximized_vertical
  end),
  awful.key({ settings.mod, "Shift"   }, "m", function (c) move(c) end),
  awful.key({ settings.mod, "Shift"   }, "r", function (c) resize(c) 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, 9 do
  globalkeys = awful.util.table.join(globalkeys,
    awful.key({ settings.mod }, "#" .. i + 9, function ()
      local screen = mouse.screen
      local tag = awful.tag.gettags(screen)[i]
      if tag then
         awful.tag.viewonly(tag)
      end
    end),
    awful.key({ settings.mod, "Control" }, "#" .. i + 9, function ()
      local screen = mouse.screen
      local tag = awful.tag.gettags(screen)[i]
      if tag then
       awful.tag.viewtoggle(tag)
      end
    end),
    awful.key({ settings.mod, "Shift" }, "#" .. i + 9, function ()
      if client.focus then
        local tag = awful.tag.gettags(client.focus.screen)[i]
        if tag then
          awful.client.movetotag(tag)
        end
     end
    end),
    awful.key({ settings.mod, "Control", "Shift" }, "#" .. i + 9, function ()
      if client.focus then
        local tag = awful.tag.gettags(client.focus.screen)[i]
        if tag then
          awful.client.toggletag(tag)
        end
      end
    end))
end

clientbuttons = awful.util.table.join(
  awful.button({ }, 1, function (c) client.focus = c; c:raise() end),
  awful.button({ settings.mod }, 1, awful.mouse.client.move),
  awful.button({ settings.mod }, 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 = awful.client.focus.filter,
      keys = clientkeys,
      buttons = clientbuttons } },
  { rule = { class = "MPlayer" },
    properties = { floating = true } },
  { rule = { class = "pinentry" },
    properties = { floating = true } },
  { rule = { class = "Plugin-container" },
    properties = { floating = true } },
  { rule = { class = "Spicy" },
    properties = { border_width = 0 } },
  { rule = { class = "Virt-manager" },
    properties = { border_width = 0 } },
  { rule = { class = "VirtualBox" },
    properties = { border_width = 0 } },
  { rule = { class = "rdesktop" },
    properties = { border_width = 0 } },
  -- 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.connect_signal("manage", function (c, startup)
  -- Enable sloppy focus
  c:connect_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

  -- Create titlebar for all windows, then hide it for most windows
  -- necessary to toggle the titlebar
  -- buttons for the titlebar
  local buttons = awful.util.table.join(
    awful.button({ }, 1, function()
      client.focus = c
      c:raise()
      awful.mouse.client.move(c)
    end),
    awful.button({ }, 3, function()
      client.focus = c
      c:raise()
      awful.mouse.client.resize(c)
    end) )

  -- Widgets that are aligned to the left
  local left_layout = wibox.layout.fixed.horizontal()
  left_layout:add(awful.titlebar.widget.iconwidget(c))
  left_layout:buttons(buttons)

  -- Widgets that are aligned to the right
  local right_layout = wibox.layout.fixed.horizontal()
  right_layout:add(awful.titlebar.widget.floatingbutton(c))
  right_layout:add(awful.titlebar.widget.maximizedbutton(c))
  right_layout:add(awful.titlebar.widget.stickybutton(c))
  right_layout:add(awful.titlebar.widget.ontopbutton(c))
  right_layout:add(awful.titlebar.widget.closebutton(c))

  -- The title goes in the middle
  local middle_layout = wibox.layout.flex.horizontal()
  local title = awful.titlebar.widget.titlewidget(c)
  title:set_align("center")
  middle_layout:add(title)
  middle_layout:buttons(buttons)

  -- Now bring it all together
  local layout = wibox.layout.align.horizontal()
  layout:set_left(left_layout)
  layout:set_right(right_layout)
  layout:set_middle(middle_layout)

  awful.titlebar(c):set_widget(layout)

  -- Hide it for most clients
  if (c.type ~= "dialog") then
    awful.titlebar.hide(c)
  end
end)

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

--function run_once(prg,arg_string,pname,screen)
--    if not prg then
--        do return nil end
--    end
--
--    if not pname then
--       pname = prg
--    end
--
--    if not arg_string then 
--        awful.util.spawn_with_shell("pgrep -f -u $USER -x '" .. pname .. "' || (" .. prg .. ")",screen)
--    else
--        awful.util.spawn_with_shell("ps aux|grep -v 'grep'| grep '$USER'| grep '" .. pname .. " ".. arg_string .."' || (" .. prg .. " " .. arg_string .. ")",screen)
--    end
--end
--function run_once(prg)
--    if not prg then
--        do return nil end
--    end
--    awful.util.spawn_with_shell("pgrep -f -u $USER -x " .. prg .. " || (" .. prg .. ")")
--end

awful.util.spawn_with_shell("feh --randomize --recursive --bg-fill ".. awful.util.getdir("config") .. "/../../ownCloud/photos/desktop/")