local awful = require("awful")
local gears = require("gears")
local wibox = require("wibox")
local beautiful = require("beautiful")
local menubar = require("menubar")
local pavolctld = require("lib.pavolctld")

-- return table
local widget = {}
widget.textbox = wibox.widget.textbox()
widget.dbmeter = wibox.widget.textbox()
widget.vslider = wibox.widget {
	{
		{
			{
				value = 50,
				max_value = 150,
				shape = beautiful.slider_bar_shape,
				bg = beautiful.slider_handle_color,
				widget = wibox.widget.progressbar,
			},
			height = 5,
			widget = wibox.container.constraint
		},
		halign = "center",
		widget = wibox.container.place,
	},
	{
		bar_height = 0,
		widget = wibox.widget.slider,
	},
	layout = wibox.layout.stack,
}
widget.defsink = wibox.widget.textbox()
widget.tooltip = awful.tooltip { objects = {widget.textbox}, delay_show = 1 }

-- widget callbacks
pavolctld.set_volume_change_callback(function()
	widget.vslider.value =  pavolctld.sinks.default.vol
	widget.textbox:set_text(pavolctld.sinks.default.vol)
	widget.dbmeter:set_text(pavolctld.sinks.default.db .. " dB")
end)

pavolctld.set_sink_change_callback(function()
	widget.tooltip:set_text(pavolctld.sinks.default.desc)
end)

pavolctld.set_default_sink_change_callback(function()
	widget.vslider.value =  pavolctld.sinks.default.vol
	widget.textbox:set_text(pavolctld.sinks.default.vol)
	widget.dbmeter:set_text(pavolctld.sinks.default.db .. " dB")
	widget.tooltip:set_text(pavolctld.sinks.default.desc)
	widget.defsink:set_text(pavolctld.sinks.default.desc)
end)

-- slider
widget.vslider.maximum = 150 -- max in pavolctld
widget.vslider:buttons(volume_buttons)
widget.vslider:connect_signal("property::value", function()
	if pavolctld.sinks.default.vol == widget.vslider.value then return end -- help prevent overloading daemon
	pavolctld.volume_set(widget.vslider.value)
end)

-- scrollbox for default sink select
local default_sink_scrollbox = wibox.widget {
	widget.defsink,
	step_function = wibox.container.scroll.step_functions.linear_increase,
	speed = 25,
	extra_space = 25, -- space between repetition
	pause = true, -- start paused
	widget = wibox.container.scroll.horizontal,
}

-- scroll when hovering
default_sink_scrollbox:connect_signal("mouse::enter", function()
	default_sink_scrollbox:continue()
end)

default_sink_scrollbox:connect_signal("mouse::leave", function()
	default_sink_scrollbox:pause()
	default_sink_scrollbox:reset_scrolling()
end)

-- widget dropdown
local volume_dropdown = wibox.widget {
	{
		{
			{
				default_sink_scrollbox,
				margins = 5,
				widget = wibox.container.margin,
			},
			bg = "#333333",
			widget = wibox.container.background,
		},
		margins = beautiful.border_width,
		color = "#222222",
		widget = wibox.container.margin,
	},
	{
		{
			text = "M",
			widget = wibox.widget.textbox,
		},
		{
			widget.vslider,
			left = 10,
			right = 10,
			widget = wibox.container.margin,
			layout = wibox.layout.stack,
		},
		{
			widget.dbmeter,
			forced_width = 125,
			halign = "right",
			widget = wibox.container.place,
		},
		layout = wibox.layout.align.horizontal,
	},
	forced_num_cols = 1,
	forced_num_rows = 2,
	expand          = true,
	forced_width = 500,
	forced_height = 100,
	layout = wibox.layout.grid,
}
widget.dropdown = awful.popup {
	widget = {
		volume_dropdown,
		margins = 15,
		widget = wibox.container.margin,
	},
	border_color = beautiful.border_focus,
	border_width = beautiful.border_width,
	shape        = gears.shape.rounded_rect,
	ontop        = true,
	hide_on_right_click = true,
	preferred_positions = "bottom",
	preferred_anchors   = 'back',
	visible = false,
	offset = { y = 5 },
}

widget.dropdown:bind_to_widget(widget.textbox)


return widget