--[[

     Licensed under GNU General Public License v2
      * (c) 2014, anticlockwise <http://github.com/anticlockwise>

--]]

local helpers = require('lain.helpers')
local shell = require('awful.util').shell
local focused = require('awful.screen').focused
local escape_f = require('awful.util').escape
local naughty = require('naughty')
local wibox = require('wibox')
local os = os
local string = string

-- MOC audio player
-- lain.widget.contrib.moc

local function factory(args)
	args = args or {}

	local moc = { widget = args.widget or wibox.widget.textbox() }
	local timeout = args.timeout or 2
	local music_dir = args.music_dir or os.getenv('HOME') .. '/Music'
	local cover_pattern = args.cover_pattern or '*\\.(jpg|jpeg|png|gif)$'
	local cover_size = args.cover_size or 100
	local default_art = args.default_art or ''
	local followtag = args.followtag or false
	local settings = args.settings or function() end

	moc_notification_preset = { title = 'Now playing', timeout = 6 }

	helpers.set_map('current moc track', nil)

	function moc.update()
		helpers.async('mocp -i', function(f)
			moc_now = {
				state = 'N/A',
				file = 'N/A',
				artist = 'N/A',
				title = 'N/A',
				album = 'N/A',
				elapsed = 'N/A',
				total = 'N/A',
			}

			for line in string.gmatch(f, '[^\n]+') do
				for k, v in string.gmatch(line, '([%w]+):[%s](.*)$') do
					if k == 'State' then
						moc_now.state = v
					elseif k == 'File' then
						moc_now.file = v
					elseif k == 'Artist' then
						moc_now.artist = escape_f(v)
					elseif k == 'SongTitle' then
						moc_now.title = escape_f(v)
					elseif k == 'Album' then
						moc_now.album = escape_f(v)
					elseif k == 'CurrentTime' then
						moc_now.elapsed = escape_f(v)
					elseif k == 'TotalTime' then
						moc_now.total = escape_f(v)
					end
				end
			end

			moc_notification_preset.text =
				string.format('%s (%s) - %s\n%s', moc_now.artist, moc_now.album, moc_now.total, moc_now.title)
			widget = moc.widget
			settings()

			if moc_now.state == 'PLAY' then
				if moc_now.title ~= helpers.get_map('current moc track') then
					helpers.set_map('current moc track', moc_now.title)

					if followtag then
						moc_notification_preset.screen = focused()
					end

					local common = {
						preset = moc_notification_preset,
						icon = default_art,
						icon_size = cover_size,
						replaces_id = moc.id,
					}

					local path = string.format('%s/%s', music_dir, string.match(moc_now.file, '.*/'))
					local cover =
						string.format("find '%s' -maxdepth 1 -type f | egrep -i -m1 '%s'", path, cover_pattern)
					helpers.async({ shell, '-c', cover }, function(current_icon)
						common.icon = current_icon:gsub('\n', '')
						moc.id = naughty.notify(common).id
					end)
				end
			elseif moc_now.state ~= 'PAUSE' then
				helpers.set_map('current moc track', nil)
			end
		end)
	end

	moc.timer = helpers.newtimer('moc', timeout, moc.update, true, true)

	return moc
end

return factory