-- banshee.lua, a dxirc script for controlling Banshee Media Player
-- Copyright (C) 2010 Jaromir Hradilek <jhradilek@gmail.com>

-- This program is free software:  you can redistribute it and/or modify it
-- under  the terms of the  GNU General Public License  as published by the
-- Free Software Foundation, version 3 of the License.
--
-- This program is  distributed  in the hope  that it will  be useful,  but
-- WITHOUT  ANY WARRANTY;  without  even the implied warranty of MERCHANTA-
-- BILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU General Public
-- License for more details.
--
-- You should have received a copy of the  GNU General Public License along
-- with this program. If not, see <http://www.gnu.org/licenses/>.

-- Register the script:
function dxirc_Register()
  -- General script information:
  local name        = "banshee"
  local version     = "0.9.0"
  local description = "Control your Banshee Media Player directly from " ..
                      "dxirc and/or send the currently playing track to "..
                      "the channel/query. Make sure Banshee is already " ..
                      "running before using this script."

  -- Return the information:
  return name, version, description
end

-- Register commands:
function dxirc_Init()
  dxirc.AddCommand("banshee","cmd_banshee","Control Banshee Media Player"..
                   ". Usage: /BANSHEE [command], where allowed commands "..
                   "are current, play, pause, stop, next or prev.")
end

-- Return the string with currently playing song:
function banshee_current()
  -- Run the  remote control application  in a separate process and get the
  -- currently playing track:
  local banshee      = io.popen('banshee --query-title --query-artist','r')
  local track_title  = banshee:read():gsub("title:%s*", "", 1)
  local track_artist = banshee:read():gsub("artist:%s*", "", 1)
  banshee:close()

  -- Check whether the track title is present:
  if track_title == '' and track_artist == '' then
    -- Return the player status:
    return ".:[ Banshee is not playing ]:."
  else
    -- Return the formatted result:
    return ".:[ " .. track_artist .. " - " .. track_title .. " ]:."
  end
end

-- Play the track:
function banshee_play()
  -- Run the  remote control application  in a separate process  and return
  -- its status code:
  return os.execute('banshee --play')
end

-- Pause the track:
function banshee_pause()
  -- Run the  remote control application  in a separate process  and return
  -- its status code:
  return os.execute('banshee --pause')
end

-- Stop playing the track:
function banshee_stop()
  -- Run the  remote control application  in a separate process  and return
  -- its status code:
  return os.execute('banshee --stop')
end

-- Play previous track:
function banshee_prev()
  -- Run the  remote control application  in a separate process  and return
  -- its status code:
  return os.execute('banshee --previous')
end

-- Play next track:
function banshee_next()
  -- Run the  remote control application  in a separate process  and return
  -- its status code:
  return os.execute('banshee --next')
end

-- Run the remote control application with selected command:
function cmd_banshee(arg, tab_id)
  -- Convert the argument to lower case:
  local command = arg:lower()

  -- Parse the command:
  if command == "" or command == "current" then
    -- Send the message to the channel/query:
    dxirc.Command(banshee_current(), tab_id)
  elseif command == "play" then
    -- Execute the command:
    banshee_play()
  elseif command == "pause" then
    -- Execute the command:
    banshee_pause()
  elseif command == "stop" then
    -- Execute the command:
    banshee_stop()
  elseif command == "prev" then
    -- Execute the command:
    banshee_prev()
  elseif command == "next" then
    -- Execute the command:
    banshee_next()
  else
    -- Report invalid command:
    dxirc.Print("banshee: Invalid command `" .. command .. "'", tab_id,"4")
  end
end