awesome.lua

--FILE LOCATON: ~/.config/awesome/rc.lua
-- If LuaRocks is installed, make sure that packages installed through it are
-- found (e.g. lgi). If LuaRocks is not installed, do nothing.
pcall(require, "luarocks.loader")

-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
require("awful.autofocus")
-- Theme handling library
local beautiful = require("beautiful")
-- Notification library
local naughty = require("naughty")
local hotkeys_popup = require("awful.hotkeys_popup")
-- 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
-- }}}

-- {{{ Variable definitions
-- Themes define colours, icons, font and wallpapers.
beautiful.init(gears.filesystem.get_themes_dir() .. "default/theme.lua")

-- 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.floating,
    --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.corner.nw,
    -- awful.layout.suit.corner.ne,
    -- awful.layout.suit.corner.sw,
    -- awful.layout.suit.corner.se,
}
-- }}}

local function set_wallpaper(s)
    -- Wallpaper
    if beautiful.wallpaper then
        local wallpaper = beautiful.wallpaper
        -- If wallpaper is a function, call it with the screen
        if type(wallpaper) == "function" then
            wallpaper = wallpaper(s)
        end
        gears.wallpaper.maximized(wallpaper, s, true)
    end
end

-- Re-set wallpaper when a screen's geometry changes (e.g. different resolution)
screen.connect_signal("property::geometry", set_wallpaper)

awful.screen.connect_for_each_screen(function(s)
    -- Wallpaper
    set_wallpaper(s)

    -- Each screen has its own tag table.
    awful.tag({ "1", "2", "3", "4", "5", "6", "7", "8", "9" }, s, awful.layout.layouts[1])
end)
-- }}}

-- {{ Tag Wallpapers

-- https://github.com/awesomeWM/awesome/blob/master/lib/gears/filesystem.lua#L195
local Gio = require("lgi").Gio
function get_random_file_from_dir(path, exts, absolute_path)
    local files, valid_exts = {}, {}

    -- Transforms { "jpg", ... } into { [jpg] = #, ... }
    if exts then for i, j in ipairs(exts) do valid_exts[j:lower():gsub("^[.]", "")] = i end end

    -- Build a table of files from the path with the required extensions
    local file_list = Gio.File.new_for_path(path):enumerate_children("standard::*", 0)

    -- This will happen when the directory doesn't exist.
    if not file_list then return nil end

    for file in function() return file_list:next_file() end do
        if file:get_file_type() == "REGULAR" then
            local file_name = file:get_display_name()

            if not exts or valid_exts[file_name:lower():match(".+%.(.*)$") or ""] then
               table.insert(files, file_name)
            end
        end
    end

    if #files == 0 then return nil end

    -- Return a randomly selected filename from the file table
    local file = files[math.random(#files)]

    return absolute_path and (path:gsub("[/]*$", "") .. "/" .. file) or file
end

local prefix = "/home/j45/bg/"
local screen2tag2wallpaper = {}
for s = 1, screen.count() do
	screen2tag2wallpaper[screen[s].index] = {}
	for _, k in pairs(screen[s].tags) do
		local rand = get_random_file_from_dir(prefix, { "jpg", "png" }, false)
		screen2tag2wallpaper[screen[s].index][k.name] = rand

	end
	screen[s]:connect_signal("tag::history::update", function()
		local surface = gears.surface.load(prefix..screen2tag2wallpaper[screen[s].index][screen[s].selected_tag.name])
		gears.wallpaper.maximized(surface)
	end)
end
-- }}_

-- {{{ Mouse bindings
root.buttons(gears.table.join(
    awful.button({ }, 4, awful.tag.viewnext),
    awful.button({ }, 5, awful.tag.viewprev)
))
-- }}}

-- {{{ Key bindings
globalkeys = gears.table.join(
    awful.key({ modkey,           }, "s",      hotkeys_popup.show_help,
              {description="show help", group="awesome"}),
    awful.key({ modkey, "Shift"   }, "s",      function()
		awful.util.spawn_with_shell("flameshot gui") end,
              {description="take screenshot with flameshot", group="custom"}),
    awful.key({ modkey,           }, "Left",   awful.tag.viewprev,
              {description = "view previous", group = "tag"}),
    awful.key({ modkey,           }, "Right",  awful.tag.viewnext,
              {description = "view next", group = "tag"}),
    awful.key({ modkey,           }, "Escape", awful.tag.history.restore,
              {description = "go back", group = "tag"}),

    awful.key({ modkey,           }, "j",
        function ()
            awful.client.focus.byidx( 1)
        end,
        {description = "focus next by index", group = "client"}
    ),
    awful.key({ modkey,           }, "k",
        function ()
            awful.client.focus.byidx(-1)
        end,
        {description = "focus previous by index", group = "client"}
    ),
    awful.key({ modkey,           }, "w",
    	function ()
		local rand = get_random_file_from_dir(prefix, { "jpg", "png" }, false)
  		screen2tag2wallpaper[client.focus.screen.index][client.focus.screen.selected_tag.name] = rand
		surface = gears.surface.load(prefix..rand)
		gears.wallpaper.maximized(surface)
	end,
        {description = "change wallpaper for current tag", group = "client"}),

    -- Layout manipulation
    awful.key({ modkey, "Shift"   }, "j", function () awful.client.swap.byidx(  1)    end,
              {description = "swap with next client by index", group = "client"}),
    awful.key({ modkey, "Shift"   }, "k", function () awful.client.swap.byidx( -1)    end,
              {description = "swap with previous client by index", group = "client"}),
    awful.key({ modkey, "Control" }, "j", function () awful.screen.focus_relative( 1) end,
              {description = "focus the next screen", group = "screen"}),
    awful.key({ modkey, "Control" }, "k", function () awful.screen.focus_relative(-1) end,
              {description = "focus the previous screen", group = "screen"}),
    awful.key({ modkey,           }, "u", awful.client.urgent.jumpto,
              {description = "jump to urgent client", group = "client"}),
    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("alacritty") end,
              {description = "open a terminal", group = "launcher"}),
    awful.key({ modkey, "Control" }, "r", awesome.restart,
              {description = "reload awesome", group = "awesome"}),
    awful.key({ modkey, "Shift"   }, "q", awesome.quit,
              {description = "quit awesome", group = "awesome"}),
    awful.key({ modkey, "Control" }, "n",
              function ()
                  local c = awful.client.restore()
                  -- Focus restored client
                  if c then
                    c:emit_signal(
                        "request::activate", "key.unminimize", {raise = true}
                    )
                  end
              end,
              {description = "restore minimized", group = "client"}),

    --My custom app launcher shortcut
    awful.key({ modkey }, "r", function () awful.util.spawn_with_shell("LC_ALL=C rofi -show drun") end,
    {description = "rofi app launcher", group = "custom"}),
    --Browser shortcut
    awful.key({ modkey }, "b", function () awful.util.spawn_with_shell("firefox") end,
    {description = "open browser", group = "custom"}),
    --Discord shortcut
    awful.key({ modkey }, "d", function () awful.util.spawn_with_shell("discord") end,
    {description = "open discord", group = "custom"}),
    --Calculator shortcut
    awful.key({ modkey }, "c", function () awful.util.spawn_with_shell("LC_ALL=C rofi -show calc -modi calc -no-show-match -no-sort") end,
    {description = "open calculator", group = "custom"})
)

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}, "q",      function (c) c:kill()                                     end,
              {description = "close", group = "custom"}),
    awful.key({ modkey}, "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)
        c:emit_signal("request::activate", "mouse_click", {raise = true})
    end),
    awful.button({ modkey }, 1, function (c)
        c:emit_signal("request::activate", "mouse_click", {raise = true})
        awful.mouse.client.move(c)
    end),
    awful.button({ modkey }, 3, function (c)
        c:emit_signal("request::activate", "mouse_click", {raise = true})
        awful.mouse.client.resize(c)
    end)
)

-- 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_width = 0,
                     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.
          "pinentry",
        },
        class = {
          "Arandr",
          "Blueman-manager",
          "Gpick",
          "Kruler",
          "MessageWin",  -- kalarm.
          "Sxiv",
          "Tor Browser", -- Needs a fixed window size to avoid fingerprinting by screen size.
          "Wpa_gui",
          "veromix",
          "xtightvncviewer"},

        -- Note that the name property shown in xprop might be set slightly after creation of the client
        -- and the name shown there might not match defined rules here.
        name = {
          "Event Tester",  -- xev.
        },
        role = {
          "AlarmWindow",  -- Thunderbird's calendar.
          "ConfigManager",  -- Thunderbird's about:config.
          "pop-up",       -- e.g. Google Chrome's (detached) Developer Tools.
        }
      }, properties = { floating = true }},

	{ rule = { class = "[Ee]lement" },
		properties = { screen = 1, tag = "1" },
	},
	{ rule = { class = "[Dd]iscord" },
		properties = { screen = 1, tag = "1" },
	},
	{ rule = { class = "[Ff]irefox" },
		properties = { screen = 2, tag = "1" },
	},
	{ rule = { class = "[Ss]potify" },
		properties = { screen = 1, tag = "1", minimized = true },
	},
}

-- {{{ 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)
    c:emit_signal("request::activate", "mouse_enter", {raise = false})
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)
-- }}}

--Gaps
beautiful.useless_gap = 5

--Auto run stuff
awful.spawn.with_shell("setxkbmap gb")
awful.spawn.with_shell("/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1")
awful.spawn.with_shell("picom --experimental-backend")
awful.spawn.with_shell("/home/j45/.config/awesome/polybar_start.sh")
awful.spawn.with_shell("flameshot")
awful.spawn.with_shell("nm-applet")