-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
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 hotkeys_popup = require("awful.hotkeys_popup").widget
-- Enable hotkeys help widget for VIM and other apps
-- when client with a matching name is opened:
require("awful.hotkeys_popup.keys")

-- {{{ Error handling
-- Check if awesome encountered an error during startup and fell back to
-- another config (This code will only ever execute for the fallback config)
if awesome.startup_errors then
    naughty.notify({ preset = naughty.config.presets.critical,
                     title = "Oops, there were errors during startup!",
                     text = awesome.startup_errors })
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 = tostring(err) })
        in_error = false
    end)
end
-- }}}

-- Autostart
function run_once(cmd)
  findme = cmd
  firstspace = cmd:find(" ")
  if firstspace then
     findme = cmd:sub(0, firstspace-1)
  end
  awful.util.spawn_with_shell("pgrep -u $USER -x " .. findme .. " > /dev/null || (" .. cmd .. ")")
end

run_once("xmodmap ~/.config/Xmodmap")
run_once("xrdb ~/.config/Xresources")
run_once("compton")
run_once("xbanish")
run_once("xsetroot -cursor_name left_ptr")

-- {{{ Variable definitions
-- Themes define colours, icons, font and wallpapers.
beautiful.init("~/.config/awesome/bit6theme.lua")

-- This is used later as the default terminal and editor to run.
terminal = "alacritty"
editor = os.getenv("EDITOR") or "vim"
editor_cmd = terminal .. " -e " .. editor

-- 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.
awful.layout.layouts = {
    awful.layout.suit.tile,
    awful.layout.suit.floating,
    -- 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.corner.nw,
    -- awful.layout.suit.corner.ne,
    -- awful.layout.suit.corner.sw,
    -- awful.layout.suit.corner.se,
}
-- }}}

-- {{{ Helper functions
local function client_menu_toggle_fn()
    local instance = nil

    return function ()
        if instance and instance.wibox.visible then
            instance:hide()
            instance = nil
        else
            instance = awful.menu.clients({ theme = { width = 250 } })
        end
    end
end
-- }}}
-- Keyboard map indicator and switcher
keyboardlayout = awful.widget.keyboardlayout()

-- {{{ Wibar
-- Create a textclock widget
textclock = wibox.widget.textclock(" %a %b %d, <span foreground=\"#fcfdfe\">%H:%M</span> ", 60, "Europe/Moscow")

-- WIdget separator(just a simple space)
separator = wibox.widget.textbox()
separator.text = " "

-- Create a wibox for each screen and add it
local taglist_buttons = gears.table.join(
                    awful.button({ }, 1, function(t) t:view_only() end),
                    awful.button({ modkey }, 1, function(t)
                                              if client.focus then
                                                  client.focus:move_to_tag(t)
                                              end
                                          end),
                    awful.button({ }, 3, awful.tag.viewtoggle),
                    awful.button({ modkey }, 3, function(t)
                                              if client.focus then
                                                  client.focus:toggle_tag(t)
                                              end
                                          end),
                    awful.button({ }, 4, function(t) awful.tag.viewnext(t.screen) end),
                    awful.button({ }, 5, function(t) awful.tag.viewprev(t.screen) end)
                )

local function bit_updatelayoutwidget (widget, screen)
    widget.markup = "<span foreground=\"#756bb1\">[</span><span foreground=\"#fcfdfe\">" .. awful.layout.getname(awful.layout.get(screen)) .. "</span><span foreground=\"#756bb1\">]</span>"
end


awful.screen.connect_for_each_screen(function(s)
    -- Wall color
    awful.spawn("hsetroot -solid #0c0d12")

    -- Create promptbox for each screen
    s.mypromptbox = awful.widget.prompt()

    -- Each screen has its own tag table.
    awful.tag({ "eins",  "zwei",  "drei",  "vier", "fünf", "sechs", "sieben", "acht", "neun" }, s, awful.layout.layouts[1])

    -- Create a taglist widget
    s.mytaglist = awful.widget.taglist(s, awful.widget.taglist.filter.all, taglist_buttons)

    -- Create a widget to show current tag layout
    s.taglayout = wibox.widget.textbox()
    bit_updatelayoutwidget(s.taglayout, s)
    awful.tag.attached_connect_signal(s, "property::layout", function () bit_updatelayoutwidget(s.taglayout, s) end)
    awful.tag.attached_connect_signal(s, "property::selected", function () bit_updatelayoutwidget(s.taglayout, s) end)

    -- Create the wibox
    s.mywibox = awful.wibar({ position = "top", screen = s, height = 16})

    -- Add widgets to the wibox
    s.mywibox:setup {
        layout = wibox.layout.align.horizontal,
        { -- Left widgets
            layout = wibox.layout.fixed.horizontal,
            s.mytaglist,
            separator,
            s.taglayout
        },
        nil,
        { -- Right widgets
            layout = wibox.layout.fixed.horizontal,
            keyboardlayout,
            textclock,
        },
    }
end)
-- }}}

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

-- {{{ Key bindings
globalkeys = gears.table.join(
    awful.key({ modkey,"Shift"    }, "s",      hotkeys_popup.show_help,
              {description="show help", group="awesome"}),
    awful.key({ modkey,           }, "bracketleft",   awful.tag.viewprev,
              {description = "view previous", group = "tag"}),
    awful.key({ modkey,           }, "bracketright",  awful.tag.viewnext,
              {description = "view next", group = "tag"}),
    awful.key({ modkey,           }, "Escape", awful.tag.history.restore,
              {description = "go back", group = "tag"}),

    awful.key({ modkey,           }, "Up",
        function ()
            awful.client.focus.byidx( 1)
        end,
        {description = "focus next by index", group = "client"}
    ),
    awful.key({ modkey,           }, "Down",
        function ()
            awful.client.focus.byidx(-1)
        end,
        {description = "focus previous by index", group = "client"}
    ),

    -- Layout manipulation
    awful.key({ modkey, "Shift"   }, "Up", function () awful.client.swap.byidx(  1)    end,
              {description = "swap with next client by index", group = "client"}),
    awful.key({ modkey, "Shift"   }, "Down", function () awful.client.swap.byidx( -1)    end,
              {description = "swap with previous client by index", group = "client"}),
    awful.key({ modkey, "Control" }, "Right", function () awful.screen.focus_relative( 1) end,
              {description = "focus the next screen", group = "screen"}),
    awful.key({ modkey, "Control" }, "Left", function () awful.screen.focus_relative(-1) end,
              {description = "focus the previous screen", group = "screen"}),
    awful.key({ modkey,           }, "Tab",
        function ()
            awful.client.focus.history.previous()
            if client.focus then
                client.focus:raise()
            end
        end,
        {description = "go back", group = "client"}),

    -- Standard program
    awful.key({ modkey,           }, "Return", function () awful.spawn(terminal) end,
              {description = "open a terminal", group = "launcher"}),
    awful.key({ modkey,"Mod1"     }, "Return", function () awful.spawn("nvim-gtk") end,
              {description = "open a nvim frontend", group = "launcher"}),
    awful.key({ modkey, "Mod1"    }, "r", awesome.restart,
              {description = "reload awesome", group = "awesome"}),
    awful.key({ modkey, "Mod1"    }, "q", awesome.quit,
              {description = "quit awesome", group = "awesome"}),

    awful.key({ modkey,           }, "Right",     function () awful.tag.incmwfact( 0.05)          end,
              {description = "increase master width factor", group = "layout"}),
    awful.key({ modkey,           }, "Left",     function () awful.tag.incmwfact(-0.05)          end,
              {description = "decrease master width factor", group = "layout"}),
    awful.key({ modkey, "Shift"   }, "Left",     function () awful.tag.incnmaster( 1, nil, true) end,
              {description = "increase the number of master clients", group = "layout"}),
    awful.key({ modkey, "Shift"   }, "Right",     function () awful.tag.incnmaster(-1, nil, true) end,
              {description = "decrease the number of master clients", group = "layout"}),
    awful.key({ modkey, "Control" }, "Left",     function () awful.tag.incncol( 1, nil, true)    end,
              {description = "increase the number of columns", group = "layout"}),
    awful.key({ modkey, "Control" }, "Right",     function () awful.tag.incncol(-1, nil, true)    end,
              {description = "decrease the number of columns", group = "layout"}),
    awful.key({ modkey,           }, "space", function () awful.layout.inc( 1)                end,
              {description = "select next", group = "layout"}),
    awful.key({ modkey, "Shift"   }, "space", function () awful.layout.inc(-1)                end,
              {description = "select previous", group = "layout"}),

    awful.key({ modkey, "Control" }, "n",
              function ()
                  local c = awful.client.restore()
                  -- Focus restored client
                  if c then
                      client.focus = c
                      c:raise()
                  end
              end,
              {description = "restore minimized", group = "client"}),

    -- Prompt
    awful.key({ modkey },            "slash",     function () awful.spawn("dmenu_run_history -p run:") end,
              {description = "run prompt", group = "launcher"}),
    -- Screenshot
    awful.key({ modkey },            "p",         function () awful.spawn("maim-shot -P") end,
              {description = "screenshot", group = "launcher"}),
    -- Enable screen locker
    awful.key({ modkey, "Shift" },   "l",         function () awful.spawn.with_shell("slock -m \"$(fortune)\"") end,
              {description = "screen lock",group = "launcher"}),
    -- Toggle keyboard layout
    awful.key({ modkey },    "grave",             function () keyboardlayout.next_layout() end,
              { description = "toggle layout", group = "keyboard" })
)

clientkeys = gears.table.join(
    awful.key({ modkey,           }, "f",
        function (c)
            c.fullscreen = not c.fullscreen
            c:raise()
        end,
        {description = "toggle fullscreen", group = "client"}),
    awful.key({ modkey, "Shift"   }, "q",      function (c) c:kill()                         end,
              {description = "close", group = "client"}),
    awful.key({ modkey, "Control" }, "space",  awful.client.floating.toggle,
              {description = "toggle floating", group = "client"}),
    awful.key({ modkey, "Control" }, "Return", function (c) c:swap(awful.client.getmaster()) end,
              {description = "move to master", group = "client"}),
    awful.key({ modkey,           }, "o",      function (c) c:move_to_screen()               end,
              {description = "move to screen", group = "client"}),
    awful.key({ modkey,           }, "t",      function (c) c.ontop = not c.ontop            end,
              {description = "toggle keep on top", group = "client"}),
    awful.key({ modkey,           }, "n",
        function (c)
            -- The client currently has the input focus, so it cannot be
            -- minimized, since minimized clients can't have the focus.
            c.minimized = true
        end ,
        {description = "minimize", group = "client"}),
    awful.key({ modkey,           }, "m",
        function (c)
            c.maximized = not c.maximized
            c:raise()
        end ,
        {description = "(un)maximize", group = "client"}),
    awful.key({ modkey, "Control" }, "m",
        function (c)
            c.maximized_vertical = not c.maximized_vertical
            c:raise()
        end ,
        {description = "(un)maximize vertically", group = "client"}),
    awful.key({ modkey, "Shift"   }, "m",
        function (c)
            c.maximized_horizontal = not c.maximized_horizontal
            c:raise()
        end ,
        {description = "(un)maximize horizontally", group = "client"})
)

-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it work on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, 9 do
    globalkeys = gears.table.join(globalkeys,
        -- View tag only.
        awful.key({ modkey }, "#" .. i + 9,
                  function ()
                        local screen = awful.screen.focused()
                        local tag = screen.tags[i]
                        if tag then
                           tag:view_only()
                        end
                  end,
                  {description = "view tag #"..i, group = "tag"}),
        -- Toggle tag display.
        awful.key({ modkey, "Control" }, "#" .. i + 9,
                  function ()
                      local screen = awful.screen.focused()
                      local tag = screen.tags[i]
                      if tag then
                         awful.tag.viewtoggle(tag)
                      end
                  end,
                  {description = "toggle tag #" .. i, group = "tag"}),
        -- Move client to tag.
        awful.key({ modkey, "Shift" }, "#" .. i + 9,
                  function ()
                      if client.focus then
                          local tag = client.focus.screen.tags[i]
                          if tag then
                              client.focus:move_to_tag(tag)
                          end
                     end
                  end,
                  {description = "move focused client to tag #"..i, group = "tag"}),
        -- Toggle tag on focused client.
        awful.key({ modkey, "Control", "Shift" }, "#" .. i + 9,
                  function ()
                      if client.focus then
                          local tag = client.focus.screen.tags[i]
                          if tag then
                              client.focus:toggle_tag(tag)
                          end
                      end
                  end,
                  {description = "toggle focused client on tag #" .. i, group = "tag"})
    )
end

clientbuttons = gears.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
-- Rules to apply to new clients (through the "manage" signal).
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,
                     raise = true,
                     keys = clientkeys,
                     buttons = clientbuttons,
                     screen = awful.screen.preferred,
                     placement = awful.placement.no_overlap+awful.placement.no_offscreen,
     }
    },

    -- Floating clients.
    { rule_any = {
        instance = {
          "DTA",  -- Firefox addon DownThemAll.
          "copyq",  -- Includes session name in class.
        },
        class = {
          "Arandr",
          "Gpick",
          "Kruler",
          "MessageWin",  -- kalarm.
          "Sxiv",
          "Wpa_gui",
          "pinentry",
          "veromix",
          "mpv",
          "xtightvncviewer"},

        name = {
          "Event Tester",  -- xev.
        },
        role = {
          "AlarmWindow",  -- Thunderbird's calendar.
          "pop-up",       -- e.g. Google Chrome's (detached) Developer Tools.
        }
      }, properties = { floating = true }},

    -- Add titlebars to normal clients and dialogs
    { rule_any = {type = { "normal", "dialog" }
      }, properties = { titlebars_enabled = false }
    },

    -- Set Firefox to always map on the tag named "2" on screen 1.
    -- { rule = { class = "Firefox" },
    --   properties = { screen = 1, tag = "2" } },
}
-- }}}

-- {{{ Signals
-- Signal function to execute when a new client appears.
client.connect_signal("manage", function (c)
    -- Set the windows at the slave,
    -- i.e. put it at the end of others instead of setting it master.
    -- if not awesome.startup then awful.client.setslave(c) end

    if awesome.startup and
      not c.size_hints.user_position
      and not c.size_hints.program_position then
        -- Prevent clients from being unreachable after screen count changes.
        awful.placement.no_offscreen(c)
    end
end)

-- Enable sloppy focus, so that focus follows mouse.
client.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)

-- 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)
-- }}}