-- 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 awesome = require "awesome"
local root = require "root"
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 menubar = require "menubar"
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() .. "gtk/theme.lua")

-- This is used later as the default terminal and editor to run.
local terminal = "wezterm"
local editor = "nvim"
local 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.
local modkey = "Mod4"

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

-- {{{ Menu
-- Create a launcher widget and a main menu
local menuitems = {
    { "hotkeys", function() hotkeys_popup.show_help(nil, awful.screen.focused()) end },
    { "manual", terminal .. " -e man awesome" },
    { "edit config", editor_cmd .. " " .. awesome.conffile },
    { "restart", awesome.restart },
    { "quit", function() awesome.quit() end },
}

local mainmenu = awful.menu {
    items = {
        { "awesome", menuitems, beautiful.awesome_icon },
        { "open terminal", terminal },
        { "open" .. editor, editor_cmd },
    },
}

local launcher = awful.widget.launcher { image = beautiful.awesome_icon, menu = mainmenu }

-- Menubar configuration
menubar.utils.terminal = terminal -- Set the terminal for applications that require it
-- }}}

-- Keyboard map indicator and switcher
local keyboard_layout = awful.widget.keyboardlayout()

-- {{{ Wibar
-- Create a textclock widget
local mytextclock = wibox.widget.textclock()

-- 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 tasklist_buttons = gears.table.join(
    awful.button({}, 1, function(c)
        if c == client.focus then
            c.minimized = true
        else
            c:emit_signal("request::activate", "tasklist", { raise = true })
        end
    end),
    awful.button({}, 3, function() awful.menu.client_list { theme = { width = 250 } } end),
    awful.button({}, 4, function() awful.client.focus.byidx(1) end),
    awful.button({}, 5, function() awful.client.focus.byidx(-1) end)
)

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({ "main", "dev", "browser", "files", "chat", "remote" }, s, {
        awful.layout.suit.tile,
        awful.layout.suit.tile,
        awful.layout.suit.tile,
        awful.layout.suit.tile,
        awful.layout.suit.tile,
        awful.layout.suit.max,
    })

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

    -- Create a tasklist widget
    s.mytasklist = awful.widget.tasklist {
        screen = s,
        filter = awful.widget.tasklist.filter.currenttags,
        buttons = tasklist_buttons,
    }

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

    -- Add widgets to the wibox
    s.mywibox:setup {
        layout = wibox.layout.align.horizontal,
        { -- Left widgets
            layout = wibox.layout.fixed.horizontal,
            launcher,
            s.mytaglist,
            s.mypromptbox,
        },
        s.mytasklist, -- Middle widget
        { -- Right widgets
            layout = wibox.layout.fixed.horizontal,
            keyboard_layout,
            wibox.widget.systray(),
            mytextclock,
            s.mylayoutbox,
        },
    }
end)
-- }}}

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

-- {{{ Key bindings
local globalkeys = gears.table.join(
    awful.key({ modkey }, "s", hotkeys_popup.show_help, { description = "show help", group = "awesome" }),
    awful.key({ modkey }, "w", function() mainmenu:show() end, { description = "show main menu", group = "awesome" }),
    awful.key({ modkey }, ",", awful.tag.viewprev, { description = "view previous", group = "tag" }),
    awful.key({ modkey }, ".", awful.tag.viewnext, { description = "view next", group = "tag" }),
    awful.key({ modkey }, "`", awful.tag.history.restore, { description = "go back", group = "tag" }),
    awful.key(
        { modkey },
        "[",
        function() awful.screen.focus_relative(-1) end,
        { description = "focus the previous screen", group = "screen" }
    ),
    awful.key(
        { modkey },
        "]",
        function() awful.screen.focus_relative(1) end,
        { description = "focus the next screen", group = "screen" }
    ),

    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, "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" }
    ),

    -- Layout manipulation
    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(terminal) 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 },
        "l",
        function() awful.tag.incmwfact(0.05) end,
        { description = "increase master width factor", group = "layout" }
    ),
    awful.key(
        { modkey },
        "h",
        function() awful.tag.incmwfact(-0.05) end,
        { description = "decrease master width factor", group = "layout" }
    ),
    awful.key(
        { modkey, "Shift" },
        "h",
        function() awful.tag.incnmaster(1, nil, true) end,
        { description = "increase the number of master clients", group = "layout" }
    ),
    awful.key(
        { modkey, "Shift" },
        "l",
        function() awful.tag.incnmaster(-1, nil, true) end,
        { description = "decrease the number of master clients", group = "layout" }
    ),
    awful.key(
        { modkey, "Control" },
        "h",
        function() awful.tag.incncol(1, nil, true) end,
        { description = "increase the number of columns", group = "layout" }
    ),
    awful.key(
        { modkey, "Control" },
        "l",
        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 c:emit_signal("request::activate", "key.unminimize", { raise = true }) end
    end, { description = "restore minimized", group = "client" }),

    -- Prompt
    awful.key(
        { modkey },
        "r",
        function() awful.screen.focused().mypromptbox:run() end,
        { description = "run prompt", group = "launcher" }
    ),

    awful.key(
        { modkey },
        "x",
        function()
            awful.prompt.run {
                prompt = "Run Lua code: ",
                textbox = awful.screen.focused().mypromptbox.widget,
                exe_callback = awful.util.eval,
                history_path = awful.util.get_cache_dir() .. "/history_eval",
            }
        end,
        { description = "lua execute prompt", group = "awesome" }
    ),
    -- Menubar
    awful.key({ modkey }, "p", function() menubar.show() end, { description = "show the menubar", group = "launcher" })
)

local 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" }, "c", 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

local 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_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 },
    },

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

    -- 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)

-- Add a titlebar if titlebars_enabled is set to true in the rules.
client.connect_signal("request::titlebars", function(c)
    -- buttons for the titlebar
    local buttons = gears.table.join(
        awful.button({}, 1, function()
            c:emit_signal("request::activate", "titlebar", { raise = true })
            awful.mouse.client.move(c)
        end),
        awful.button({}, 3, function()
            c:emit_signal("request::activate", "titlebar", { raise = true })
            awful.mouse.client.resize(c)
        end)
    )

    awful.titlebar(c):setup {
        { -- Left
            awful.titlebar.widget.iconwidget(c),
            buttons = buttons,
            layout = wibox.layout.fixed.horizontal,
        },
        { -- Middle
            { -- Title
                align = "center",
                widget = awful.titlebar.widget.titlewidget(c),
            },
            buttons = buttons,
            layout = wibox.layout.flex.horizontal,
        },
        { -- Right
            awful.titlebar.widget.floatingbutton(c),
            awful.titlebar.widget.maximizedbutton(c),
            awful.titlebar.widget.stickybutton(c),
            awful.titlebar.widget.ontopbutton(c),
            awful.titlebar.widget.closebutton(c),
            layout = wibox.layout.fixed.horizontal(),
        },
        layout = wibox.layout.align.horizontal,
    }
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)
-- }}}