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-- Licensed under the GNU General Public License v2
--  * (c) 2017, JuanKman94 <juan.carlos.menonita@gmail.com>
-----------------------------------------------------------

-- {{{ Grab environment
local type = type
local tonumber = tonumber
local os = { getenv = os.getenv }

local helpers = require"vicious.helpers"
local spawn = require"vicious.spawn"
-- }}}

-- Cmus: provides CMUS information
-- vicious.widgets.cmus
return helpers.setasyncall{
    async = function (format, warg, callback)
        local server = ""
        if type(warg) == "table" then
            server = " --server " .. helpers.shellquote(warg.host or warg[1])
        elseif CMUS_SOCKET then
            server = " --server " .. helpers.shellquote(os.getenv"CMUS_SOCKET")
        end

        local cmus_state = { ["{duration}"] = 0, ["{file}"] = "N/A",
                             ["{status}"] = "N/A", ["{title}"] = "N/A",
                             ["{artist}"] = "N/A", ["{continue}"] = "off",
                             ["{shuffle}"] = "off", ["{repeat}"] = "off" }

        spawn.with_line_callback("cmus-remote --query" .. server, {
            stdout = function (line)
                for module, value in line:gmatch"([%w]+) (.*)$" do
                    if module == "file" or module == "status" then
                        cmus_state["{"..module.."}"] = value
                    elseif module == "duration" then
                        cmus_state["{"..module.."}"] = tonumber(value)
                    else
                        local k, v = value:gmatch("([%w]+) (.*)$")()
                        if module == "tag" then
                            cmus_state["{"..k.."}"] = v
                        elseif module == "set" and v == "true" then
                            cmus_state["{"..k.."}"] = "on"
                        end
                    end
                end
            end,
            output_done = function () callback(cmus_state) end })
    end }