-- AwesomeWM Customizations
-- by Mike Crute <mike@crute.us>
--
-- This file contains the customizations that I run for AwesomeWM. I prefer to
-- stick as close to the stock rc.lua file as possible so it's easier to
-- upgrade. Over time awesome has had a habit of making drastic
-- non-backwards-compatible changes to that file.
--
-- To understand some parts of this file it's useful to understand my runtime
-- environment; I run both Fedora and Ubuntu depending on the context but
-- always on a Dell XPS 13 (9370 and 9380). I don't run a traditional desktop
-- environment nor do I run a settings daemon as they tend to be overly bloated
-- and do much more than I care for so Awesome tends to subsume the important
-- tasks (like display configuration) instead. I do depend heavily on systemd
-- for user session task management.
--
local awful = require("awful")
local beautiful = require("beautiful")
local dpi = require("beautiful.xresources").apply_dpi
local gears = require("gears")
local naughty = require("naughty")
local wibox = require("wibox")
local pomodoro = require("pomodoro")
local capi =
{
    mouse = mouse,
}

-- Require this here because we customize it here but also so rc.lua can use it
-- transitively through this module. It makes our local customizations to
-- rc.lua just a little easier to grep for.
local battery = require("battery")
local calendar = require("calendar")
local large_clock = require("large_clock")
local _cpu_widget = require("cpu-widget")

local timezone = "America/Los_Angeles"
local tz_file = os.getenv("HOME") .. "/.timezone"
if gears.filesystem.file_readable(tz_file) then
    timezone = io.open(tz_file, "r"):read():gsub("^%s*(.-)%s*$", "%1")
end

-- EDIDs for simple displays that disable the internal screen and set
-- the external display to auto resolution
local simple_external_display_ids = {
    ["DELL U3219Q"]  = true, -- 32" 4k Dell monitor
    ["49S405"]       = true, -- 32" 4k Dell monitor
    ["LF32TU87"]     = true, -- 32" 4k Samsung F32TU87x monitor
    ["DELL U3415W"]  = true, -- 34" curved widescreen Dell monitors
    ["DELL U3417W"]  = true, -- 34" curved widescreen Dell monitors
    ["GOOGLE JN32A"] = true, -- 32" Google Branded Monitor
}

-- EDIDs for internal displays that don't reconfigure themselves
local internal_display_ids = {
    AUO_11048 = true,
    BOE_51207 = true,
    SHP_20757 = true,
    SDC_20289 = true,
    BOE_24329 = true,
}

-- Good clear zoom stops for the Dell XPS 13 93{7,8}0
local edp_zoom_modes_9380 = {
--  "2880x1620",
--  "2560x1440",
--  "2048x1152",
--  "1920x1080",
--  "1600x900",
--  "1368x768",
    "1280x720",
    "1024x576",
    "960x540",
    "864x486",
    "720x405",
    "640x360",
}

-- Good clear daily driver modes for the Dell XPS 13 93{7,8}0
local edp_display_modes_9380 = {
    "1600x900",
    "1920x1080",
    "2048x1152",
    "2560x1440",
    "2560x1600",
    "2880x1620",
}

local edp_display_modes_9320 = {
    "1280x800",
    "1400x900",
    "1680x1050",
    "1920x1200",
    "2048x1152", -- Clear but does not use whole screen
    "2560x1600",
    "3840x2400",
}

local edp_display_modes_9310 = {
--    "3456x2160",
    "2560x1600",
    "1920x1200",
    "1680x1050",
    "1400x900",
    "1280x800",
}

local edp_display_modes_framework = {
    "2256x1504",
}

local default_edp_display_modes = {
    BOE_51207 = edp_display_modes_9380[3], -- Dell XPS 13 93{7,8}0
    AUO_11048 = edp_display_modes_9380[3], -- X1 Carbon Display
    SHP_20757 = edp_display_modes_9380[5], -- Dell XPS 13 9320
    SDC_20289 = edp_display_modes_9310[1], -- Dell XPS 13 9310
    BOE_24329 = edp_display_modes_framework[1], -- Framework Laptop
}

local default_edp_zoom_modes = {
    BOE_51207 = edp_zoom_modes_9380,
    AUO_11048 = edp_zoom_modes_9380,
    SHP_20757 = edp_display_modes_9320,
    SDC_20289 = edp_display_modes_9310,
    BOE_24329 = edp_display_modes_framework,
}

-- Preferred daily driver mode
-- This is populated by the get_default_edp_mode function, below
local default_edp_mode = edp_display_modes_9380[3]
local edp_zoom_modes = edp_zoom_modes_9380

-- dumps is a debugging tool that prints text representations of lua objects
function dump(o)
    if type(o) == 'table' then
        local s = '{ '
        for k,v in pairs(o) do
            if type(k) ~= 'number' then k = '"'..k..'"' end
            s = s .. '['..k..'] = ' .. dump(v) .. ','
        end
        return s .. '} '
    else
        return tostring(o)
    end
end

-- string_split splits strings on a delimiter and returns a table of the parts
function string_split(s, delimiter)
    if s == nil then
        return nil
    end
    local result = {}
    for match in (s..delimiter):gmatch("(.-)"..delimiter) do
        table.insert(result, match)
    end
    return result
end

--
-- Low Battery Warning
--
local battery_warning_delivered = false

-- Connects a battery status callback to the custom battery widget code. This
-- gets called each time the status bar polls for battery status and is
-- responsible for displaying a very prominent notification when the battery is
-- running too low. It will display the warning once at 10% and then every
-- polling interval at 5% and below. Below 5% the Dell battery drains much more
-- rapidly than above that level and there's a chance it will either suspend or
-- shut down (losing work in the case of the later).
--
-- This exists because I prefer to run my battery nearly to empty and then
-- charge it to avoid excess wear on the battery. But I'd prefer to not lose
-- work or be inconvenienced by a poorly timed suspend.
battery.status_callback = function(bat)
    local should_warn = bat.charge <= 10 and (bat.status == 'discharging' or bat.status == 'not connected')
    local be_persistent =  bat.charge <= 5 and (bat.status == 'discharging' or bat.status == 'not connected')

    if battery_warning_delivered and bat.status ~= 'discharging' then
        battery_warning_delivered = false
    end

    -- Just one notification below 10% should be enough to get us to an outlet
    if should_warn and not battery_warning_delivered then
        naughty.notify({ preset = naughty.config.presets.critical,
                         title = "Battery Low",
                         icon = "battery-empty",
                         icon_size = 256 })
        battery_warning_delivered = true
    end

    -- But if we make it to 5% then we're in danger of shutting down or
    -- suspending imminently so start being annoying
    if be_persistent then
        naughty.notify({ preset = naughty.config.presets.critical,
                         title = "Battery Low",
                         icon = "battery-empty",
                         icon_size = 256 })
    end
end

-- TODO: Migrate tags from removed screen to free tags on remaining screens
--
-- https://www.reddit.com/r/awesomewm/comments/5r9mgu
-- https://stackoverflow.com/questions/42056795
function handle_tag_removal(tag)
    tag.connect_signal("request::screen", function(t)
        local live_screen = nil
        for s in screen do
            if s ~= t.screen then
                live_screen = s
                break
            end
        end

        for nt in live_screen.tags do
            local clients = nt:clients()
            if #clients == 0 then
                t:swap(nt)
                break
            end
        end
    end)
end

-- TODO: Allow mouse resizing
-- Copy of suit.fair that forces rows or columns to one
local function do_equal(p, orientation)
    local wa = p.workarea
    local cls = p.clients

    -- Swap workarea dimensions, if our orientation is "east"
    if orientation == 'east' then
        wa.width, wa.height = wa.height, wa.width
        wa.x, wa.y = wa.y, wa.x
    end

    if #cls > 0 then
        local rows, cols
        if #cls == 2 then
            rows, cols = 1, 2
        else
            rows = 1
            --rows = math.ceil(math.sqrt(#cls))
            cols = math.ceil(#cls / rows)
        end

        for k, c in ipairs(cls) do
            k = k - 1
            local g = {}

            local row, col
            row = k % rows
            col = math.floor(k / rows)

            local lrows, lcols
            if k >= rows * cols - rows then
                lrows = #cls - (rows * cols - rows)
                lcols = cols
            else
                lrows = rows
                lcols = cols
            end

            if row == lrows - 1 then
                g.height = wa.height - math.ceil(wa.height / lrows) * row
                g.y = wa.height - g.height
            else
                g.height = math.ceil(wa.height / lrows)
                g.y = g.height * row
            end

            if col == lcols - 1 then
                g.width = wa.width - math.ceil(wa.width / lcols) * col
                g.x = wa.width - g.width
            else
                g.width = math.ceil(wa.width / lcols)
                g.x = g.width * col
            end

            g.y = g.y + wa.y
            g.x = g.x + wa.x

            -- Swap window dimensions, if our orientation is "east"
            if orientation == 'east' then
                g.width, g.height = g.height, g.width
                g.x, g.y = g.y, g.x
            end

            p.geometries[c] = g
        end
    end
end

-- cpu_widget builds a customized widget to indicate the CPU usage
function cpu_widget()
    return _cpu_widget({
        width = 20,
        step_width = 1,
        step_spacing = 0,
        color = '#ff0000'
    })
end

-- set_solid_wallpaper sets the gears wallpaper to a solid color as defined in
-- beautiful.bg_normal
function set_solid_wallpaper(s)
    wallpaper = gears.color.create_solid_pattern(beautiful.bg_normal)
    gears.wallpaper.set(wallpaper)
end

-- customize_theme applies additional customizations on the beautiful theme
-- after it has been setup by rc.lua
function customize_theme()
    beautiful.bg_urgent = "#222222"
    beautiful.border_width = dpi(0)

    -- Setup the wallpaper if it exists
    wallpaper_path = gears.filesystem.get_dir("config") .. "tux-minimal-bg-dark.png"
    if gears.filesystem.file_readable(wallpaper_path) then
        beautiful.wallpaper = wallpaper_path
    end

    -- Setup custom icons for the custom equal layout in this file
    beautiful.layout_equalv = gears.filesystem.get_dir("config") .. "icons/equalvw.png"
    beautiful.layout_equalh = gears.filesystem.get_dir("config") .. "icons/equalhw.png"

    -- Use a prettier icon theme if possible
    icon_theme_dir = "/usr/share/icons/Adwaita/"
    if gears.filesystem.dir_readable(icon_theme_dir) then
        naughty.config.icon_dirs = gears.table.join(naughty.config.icon_dirs, {
            icon_theme_dir
        })
    end
end

-- connect_signals hooks into startup, exit, and screen change events. On
-- startup it will start the desktop.target in the user mode systemd which can
-- pull in widgets and anything else that enhances the desktop environment. It
-- will stop this target at exit and wait for that shutdown to complete.
--
-- This function also configures callbacks that need to be run when something
-- changes about the system. This used to connect some dbus events to configure
-- keyboards and mice but just does display management now.
function connect_signals()
    awesome.connect_signal("screen::change", configure_displays)

    -- When title bars are added to floating windows a border should also be
    -- set. Setting these properties in the floating callback doesn't work
    -- because they don't get applied until after the layout arrange has
    -- happened.
    awful.screen.connect_for_each_screen(function(s)
        s:connect_signal("arrange", function()
            for _, c in pairs(awful.client.visible(s)) do
                if c.floating then
                    c.border_width = dpi(3)
                    c.border_color = beautiful.border_focus
                else
                    c.border_width = dpi(0)
                end
            end
        end)
    end)

    -- Add title bars to floating windows
    client.connect_signal("property::floating", function(c)
        if c.floating then
            awful.titlebar.show(c)
        else
            awful.titlebar.hide(c)
        end

        if c.requests_no_titlebar then
            awful.titlebar.hide(c)
        end
    end)

    awesome.connect_signal("startup", function()
        awful.spawn.spawn("systemctl --user start desktop.target")
        configure_displays()
    end)

    awesome.connect_signal("exit", function(is_restart)
        -- There is no need to do this if this is a restart because the current
        -- awesome exec's a new awesome which will inherit everything from the
        -- current session.
        if not is_restart then
            -- The use of os.execute here is intentional because it will block
            -- until systemd has finished stopping the target.
            os.execute("systemctl --user stop desktop.target")
        end
    end)
end

-- add_window_rules mixes additional window rules into awful.rules.rules. To
-- gather the information needed here use the xprop tool.
function add_window_rules()
    awful.rules.rules = gears.table.join(awful.rules.rules, {
        { rule_any = {
            class = {
              "xclock",
              "XClock"},
          },
          properties = {
            floating = true,
            ontop = true,
            focusable = true,
            skip_taskbar = true,
            placement = awful.placement.centered}
        },
        { rule = {
            role = "GtkFileChooserDialog"},
          properties = {
            placement = awful.placement.centered}
        },
        { rule = {
            class = "Inkscape",
            type = "normal"},
          properties = {
            floating = false,
            maximized = false}
        },
        { rule_any = {
            class = {
              "pavucontrol",
              "Pavucontrol"},
          },
          properties = {
            floating = true,
            placement = awful.placement.centered}
        },
        -- TODO: why does this not work with awful.spawn?
        { rule_any = {
            class = {
              "emoji-picker"},
          },
          properties = {
            floating = true,
            requests_no_titlebar = true,
            skip_taskbar = true,
            placement = function(d, _)
                local coords = capi.mouse.coords()
                d.x = coords.x
                d.y = coords.y
            end},
        }
    })
end

-- move_mouse_top_right moves the mouse out of the way to the top right corner
-- of the screen but avoids overlapping the layout picker because that displays
-- a tooltip.
function move_mouse_top_right()
    local mg = screen[mouse.screen].geometry

    -- 25 is the width of the layout switcher, to prevent tooltips
    mouse.coords({
        x = mg.x + mg.width - 23,
        y = mg.y + 1,
    })
end

-- zoom_screen uses xrandr to enable a lower resolution display mode and
-- panning, mimicking at some level, the control scroll-wheel zooming that Mac
-- OS is capable of.
--
-- This only works with the built-in display and not at all with external
-- displays.
function zoom_screen(zoom_stop)
    local mode = default_edp_mode
    local panning = "0x0"

    zoom_stop = tonumber(zoom_stop) or 0
    if zoom_stop > #edp_zoom_modes then
        zoom_stop = #edp_zoom_modes
    end

    if zoom_stop ~= 0 then
        mode = edp_zoom_modes[zoom_stop]
        panning = default_edp_mode
    end

    awful.spawn.spawn("xrandr --output eDP-1 --mode " .. mode .. " --panning " .. panning)
end

--
-- Session-persistent Zooming Support
--
-- Start at the zoom stop I generally go to anyhow, it's always possible to
-- zoom in further our out.
local default_zoom_stop = 3
local current_zoom_stop = default_zoom_stop

-- zoom_screen_up is a shortcut for zooming up using zoom stops that work
-- correctly with the display
function zoom_screen_up()
    if current_zoom_stop == #edp_zoom_modes then
        current_zoom_stop = #edp_zoom_modes
    else
        current_zoom_stop = current_zoom_stop + 1
    end

    zoom_screen(current_zoom_stop)
end

-- zoom_screen_down is a shortcut for zooming down the screen using zoom stops
-- that work correctly with the display
function zoom_screen_down()
    if current_zoom_stop == 0 then
        zoom_screen(0)
    else
        current_zoom_stop = current_zoom_stop - 1
        zoom_screen(current_zoom_stop)
    end
end

-- zoom_screen_reset resets the zooming of the screen and disables panning
function zoom_screen_reset()
    current_zoom_stop = default_zoom_stop
    zoom_screen(0)
end

-- make_spawn is a shortcut for generating awful.spawn.spawn closures and allows
-- using this shorthand in other places in this file.
function make_spawn(cmd)
    return function() awful.spawn.spawn(cmd) end
end

-- add_global_keys adds additional key bindings to the root key map. More
-- specific documentation is inline with the function.
function add_global_keys(globalkeys)
    -- On Fedora this is installed with dnf; Ubuntu as of 18.04 doesn't package
    -- light so it's built locally there.
    light = os.getenv("HOME") .. "/.local/bin/light"
    if not gears.filesystem.file_readable(light) then
        light = "light"
    end

    return gears.table.join(globalkeys,
        -- Audio Controls
        awful.key({                    }, "XF86AudioMute",          make_spawn("/usr/bin/pactl set-sink-mute @DEFAULT_SINK@ toggle")),
        awful.key({                    }, "XF86AudioLowerVolume",   make_spawn("/usr/bin/pactl set-sink-volume @DEFAULT_SINK@ '-5%'")),
        awful.key({                    }, "XF86AudioRaiseVolume",   make_spawn("/usr/bin/pactl set-sink-volume @DEFAULT_SINK@ '+5%'")),
        awful.key({                    }, "XF86AudioMicMute",       make_spawn("/usr/bin/pactl set-source-mute @DEFAULT_SOURCE@ toggle")),

        -- Audio Controls for Spotify
        -- TODO: Make this work with rhythmbox and other stuff. Maybe not
        --       needed at all if we can use some generic dbus functionality?
        --awful.key({                    }, "XF86AudioPrev",          make_spawn("dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Previous")),
        --awful.key({                    }, "XF86AudioPlay",          make_spawn("dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlayPause")),
        --awful.key({                    }, "XF86AudioNext",          make_spawn("dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Next")),
        awful.key({                    }, "XF86AudioPrev",          make_spawn("dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.rhythmbox /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Previous")),
        awful.key({                    }, "XF86AudioPlay",          make_spawn("dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.rhythmbox /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlayPause")),
        awful.key({                    }, "XF86AudioNext",          make_spawn("dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.rhythmbox /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Next")),

        -- Backlight Controls
        awful.key({ "Shift"            }, "XF86MonBrightnessUp",    make_spawn(light .. " -A 1")),
        awful.key({ "Shift"            }, "XF86MonBrightnessDown",  make_spawn(light .. " -U 1")),
        awful.key({                    }, "XF86MonBrightnessUp",    make_spawn(light .. " -A 5")),
        awful.key({                    }, "XF86MonBrightnessDown",  make_spawn(light .. " -U 5")),

        -- Screen Zooming Commands
        awful.key({ modkey             }, "z",                      zoom_screen_up),
        awful.key({ modkey             }, "-",                      zoom_screen_down),
        awful.key({ modkey             }, "=",                      zoom_screen_reset),

        -- Other useful commands
        -- https://github.com/GaZaTu/x11-emoji-picker (see rules above for floating)
        awful.key({ modkey             }, "e",                      make_spawn("emoji-picker")),
        awful.key({ modkey, "Shift"    }, "p",                      move_mouse_top_right),
        awful.key({ "Control", "Shift" }, "`",                      make_spawn("xscreensaver-command -lock"))
    )
end

-- get_layouts returns layouts to be used for awful.layout.layouts
function get_layouts()
    return {
        awful.layout.suit.tile,
        awful.layout.suit.tile.bottom,
        awful.layout.suit.tile.left,
        awful.layout.suit.tile.top,
        awful.layout.suit.fair,
        awful.layout.suit.fair.horizontal,
        { name = "equalv", arrange = function(p) do_equal(p, "south") end },
        { name = "equalh", arrange = function(p) do_equal(p, "east") end },
    }
end

-- split_screen_vertical creates a virtual screen and splits the main screen in
-- half vertically. This is mostly useful for the ultra-widescreen curved
-- monitors. It makes Awesome treat the monitor as containing two totally
-- independent screens as if it were two different monitors.
function split_screen_vertical(s)
    local s = s or 1
    local geo = screen[s].geometry
    local new_width = math.ceil(geo.width/2)

    screen[s]:fake_resize(geo.x, geo.y, new_width, geo.height)
    screen.fake_add(geo.x + new_width, geo.y, geo.width - new_width, geo.height)
end

-- split_screen_horizontal creates a virtual screen and splits the main screen
-- in half horizontally. This is mostly useful for the ultra-high-resolution
-- monitors. It makes Awesome treat the monitor as containing two totally
-- independent screens as if it were two different monitors.
function split_screen_horizontal(s)
    local s = s or 1
    local geo = screen[s].geometry
    local new_height = math.ceil(geo.height/2)

    screen[s]:fake_resize(geo.x, geo.y, geo.width, new_height)
    screen.fake_add(geo.x, geo.y + new_height, geo.width, geo.height - new_height)
end

-- get_clock creates a textclock widget for the wibox. It's basically the
-- defaults but overrides the timezone to account for some oddities that I was
-- experiencing with Ubuntu when changing timezones.
function get_clock()
    local wi = wibox.widget.textclock(" %a %b %d, %H:%M ", 60, timezone)

    local lc = large_clock()

    local cw = calendar({
        placement = 'top_right',
        start_sunday = true,
        previous_month_button = 4,
        next_month_button = 5,
    })
    wi:connect_signal("button::press", function(_, _, _, button)
        if button == 1 then cw.toggle() end
        if button == 3 then lc:toggle() end
    end)

    return wi
end

-- default_display_handler configures an output to use it's default xrandr mode
-- and position it to the right of the laptop built-in display. This should be
-- good enough for most screens.
function default_display_handler(card, edp_mode)
    awful.spawn.spawn("xrandr --output eDP-1 --mode " .. edp_mode .. " --output " .. card .. " --auto --right-of eDP-1")
end

-- get_displays uses a shell script helper (~/bin/enumerate-displays) to
-- retrieve a list of connected displays and their EDIDs. It will convert this
-- into a table and return it.
--
-- The shell script exists mainly because Lua doesn't have any built-in ability
-- to list directories unless you compile a C extension (won't work with
-- awesome), use Glib (eww), or parse ls/find (error-prone).
function get_displays()
    local result = {}
    local parts = nil
    local outputs = nil

    -- TODO: Make this async (awful.spawn.with_line_callback)
    outputs = io.popen(os.getenv("HOME") .. "/bin/enumerate-displays")

    while true do
        parts = string_split(outputs:read("*l"), ":")
        if parts == nil then
            break
        end
        table.insert(result, { card = parts[1], edid = parts[2] })
    end

    outputs:close()
    return result
end

-- get_default_edp_mode enumerates the displays and returns the preferred
-- default display mode for the eDP-1 device.
--
-- This function overrides the default set in the top of the file at first
-- runtime with the correct version for the first display.
function get_default_edp_mode()
    local displays = get_displays()
    return default_edp_display_modes[displays[1].edid]
end

default_edp_mode = get_default_edp_mode()

-- get_default_zoom_modes enumerates the displays and returns the proffered
-- zoom mode table for the eDP-1 device.
--
-- This function overrides the default set in the top of the file at first
-- runtime with the correct version for the first display.
function get_default_zoom_modes()
    local displays = get_displays()
    return default_edp_zoom_modes[displays[1].edid]
end

edp_zoom_modes = get_default_zoom_modes()

-- configure_displays uses xrandr to configure the displays connected to the
-- system when they are connected for removed.
--
-- This would normally be done by a settings daemon but since I don't run one
-- we have to do it manually here. This function gets called as part of a
-- screen::change signal.
--
-- TODO: This should be a lot more intelligent and a lot less hard coded but it
-- works for what I do so *shrug*
--
-- TODO: This should keep track of old displays and disable them all instead of
-- just the hardcoded list
function configure_displays()
    local displays = get_displays()

    -- Only an internal display is connected
    if #displays == 1 and internal_display_ids[displays[1].edid] then
        awful.spawn.spawn("xrandr " ..
            "--output eDP-1 --mode " .. default_edp_mode .. " " ..
            "--output DP-1 --off " ..
            "--output DP-2 --off " ..
            "--output DP-2-8 --off " ..
            "--output DP-5 --off " ..
            "--panning 0x0")
        return
    end

    for _, s in pairs(displays) do
        if s.edid == "DELL U2715H" then -- 27" Dell monitors (assumed 2)
            awful.spawn.spawn("xrandr " ..
                "--output DP-1 --auto " ..
                "--output DP-2 --auto --right-of DP-1 " ..
                "--output eDP-1 --off")
            return
        elseif s.edid == "LG TV" then -- Home TV
            awful.spawn.spawn("xrandr " ..
                "--output eDP-1 --mode " .. default_edp_mode ..
                " --output " .. s.card .. " --mode 1920x1080 " ..
                "--right-of eDP-1")
                return
        elseif simple_external_display_ids[s.edid] then
            awful.spawn.spawn("xrandr --output " .. s.card .. " --auto --output eDP-1 --off")
            return
        elseif internal_display_ids[s.edid] then
            -- continue
        else
            default_display_handler(s.card, default_edp_mode)
            return
        end
    end
end

return {
    -- Public "API" used by rc.lua
    add_global_keys = add_global_keys,
    add_window_rules = add_window_rules,
    connect_signals = connect_signals,
    customize_theme = customize_theme,
    get_clock = get_clock,
    get_layouts = get_layouts,
    battery = battery,
    pomodoro = pomodoro,
    cpu_widget = cpu_widget,

    -- Public functions that are occasionally useful
    split_screen_vertical = split_screen_vertical,
    split_screen_horizontal = split_screen_horizontal,

    -- Public functions that are useful on import
    configure_displays = configure_displays,
    dump = dump,
}