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require 'rubygems'
require 'flacinfo'
require 'fileutils'
require 'image_science'

class ImportsController < ApplicationController
=begin  

this routine will check a folder for flac files, and then apply the vorbis comments
it finds to the relevant database tables.
        
todo:
        
* ability to select directory and then import from that.
* integrate MB (MusicBrainz) ids, cat#s, other details?
* speed up. Find memory leaks.
* is currently unaware of changes to existing data (i.e. genres added/removed, artist
name changes) Need to be able to import data, and also modify data.
* do not add data that already exists (check against MBIDs). Still failing in this regard

=end

  def determine_folder(identifier, path, filetype)
    rounded_down = ((((identifier-1) / 1000) * 1000)+1).to_s
    rounded_up = ((((identifier-1) / 1000) + 1) * 1000).to_s
    folder = path + rounded_down + "_" + rounded_up
    Dir.mkdir(folder) unless File.directory?(folder)
    return folder + "/" + identifier.to_s + "." + filetype
  end

  def index

    if session[:user_id].nil?
    @genreslist = genre_list    
      else
    @personal_genreslist = personal_genre_list  
    @genreslist = genre_list - personal_genre_list
    end unless Genre.count == 0

    #Dir.chdir("/media/hda5/flacs/batch_9") 
    #Dir.chdir("/media/LACIE/Music/flac/")
    Dir.chdir("/media/big_content/flacs/batch_todo")
    flacfiles = ("**/*.flac")
    Dir.glob(flacfiles) do |filename|

    new_job = FlacInfo.new(filename)

    path_to_file = Dir.getwd + "/" + File.new(filename).path
    tagged_file = new_job.tags

    artist_type = ArtistType.find(:first,
      :conditions => {:name => 'primary artist'})

    artist_type = ArtistType.create(:name => 'primary artist') unless artist_type      

    artist = Artist.find(:first, 
      :conditions => {:mbid => tagged_file["musicbrainz_artistid"]}
    )

    artist = Artist.update(artist, :name => tagged_file["artist"],
      :sortname => tagged_file["artistsort"]) if artist

    artist = Artist.create(:name => tagged_file["artist"], 
      :sortname => tagged_file["artistsort"],
        :mbid => tagged_file["musicbrainz_artistid"]) unless artist

    albumartist = Artist.find(:first, 
      :conditions => {:mbid => tagged_file["musicbrainz_albumartistid"]}
    )

    albumartist = Artist.update(albumartist, :name => tagged_file["albumartist"], 
      :sortname => tagged_file["albumartistsort"]) if albumartist

    albumartist = Artist.create(:name => tagged_file["albumartist"], 
      :sortname => tagged_file["albumartistsort"],
        :mbid => tagged_file["musicbrainz_albumartistid"]) unless albumartist

    track_type = TrackType.find(:first,
      :conditions => {:name => 'audio'})

    track_type = TrackType.create(:name => 'audio') unless track_type  

    sample_rate = new_job.streaminfo['samplerate']
    total_sample = new_job.streaminfo['total_samples']
    duration_in_seconds = total_sample / sample_rate

    track = Track.find(:first, 
      :conditions => {:mbid => tagged_file["musicbrainz_trackid"]}
      )

    track = Track.update(track, :name => tagged_file["title"],
      :timing => Time.at(duration_in_seconds).gmtime.strftime('%H:%M:%S'), 
        :track_type_id => track_type.id,
          :artist_id => artist.id) if track   

    track = Track.create(:name => tagged_file["title"], 
      :mbid => tagged_file["musicbrainz_trackid"], 
        :timing => Time.at(duration_in_seconds).gmtime.strftime('%H:%M:%S'), 
          :track_type_id => track_type.id,
            :artist_id => artist.id) unless track

    track_artist = TrackArtist.find(:first,
      :conditions => {:track_id => track.id,
        :artist_id => artist.id,
          :artist_type_id => artist_type.id
      }
    )      

    track_artist = TrackArtist.create(:track_id => track.id,
      :artist_id => artist.id,
        :artist_type_id => artist_type.id) unless track_artist      

    release_type = ReleaseType.find(:first,
      :conditions => {:name => tagged_file["releasetype"]}
    )

    release_type = ReleaseType.create(:name => tagged_file["releasetype"]) unless release_type 

    release = tagged_file["album"]
    unless release.nil? 
    release = Release.find(:first, 
      :conditions => {:mbid => tagged_file["musicbrainz_albumid"]}
    )

    release = Release.update(release, :name => tagged_file["album"], 
      :release_type_id => release_type.id,
        :artist_id => albumartist.id) if release

    release = Release.create(:name => tagged_file["album"], 
      :mbid => tagged_file["musicbrainz_albumid"],
        :release_type_id => release_type.id,
          :artist_id => albumartist.id) unless release

    thirty_thumb_packshot = '/media/hdb1/railsapps/marlow/public/images/packshots/30_thumb/' 
    thirty_thumb_sym = '/home/jp/RailsStuff/marlow/public/images/packshots/30_thumb/'
    sixty_thumb_packshot = '/media/hdb1/railsapps/marlow/public/images/packshots/60_thumb/'
    sixty_thumb_sym = '/home/jp/RailsStuff/marlow/public/images/packshots/60_thumb/'
    twohundred_thumb_packshot = '/media/hdb1/railsapps/marlow/public/images/packshots/200_thumb/'
    twohundred_thumb_sym = '/home/jp/RailsStuff/marlow/public/images/packshots/200_thumb/'
    source_packshot = '/media/hdb1/railsapps/marlow/public/images/packshots/source/'

    ogg_audio = '/media/hdb1/railsapps/marlow/public/media/audio/ogg/'
    m4a_audio = '/media/hdb1/railsapps/marlow/public/media/audio/m4a/'
    ogg_sym = '/home/jp/RailsStuff/marlow/public/media/audio/ogg/'
    m4a_sym = '/home/jp/RailsStuff/marlow/public/media/audio/m4a/'

    packshot = Dir.glob("**/#{tagged_file['musicbrainz_albumid']}.jpg").to_s
    if packshot.length > 0
      ImageScience.with_image(packshot) do |img|

  img.thumbnail(30) do |thumb|
          thumb.save(determine_folder(release.id, thirty_thumb_packshot, 'jpg'))
    symlink = File.symlink?(determine_folder(release.id, thirty_thumb_sym, 'jpg'))
    if symlink == true
      File.delete(determine_folder(release.id, thirty_thumb_sym, 'jpg'))
      File.symlink("#{determine_folder(release.id, thirty_thumb_packshot, 'jpg')}", "#{determine_folder(release.id, thirty_thumb_sym, 'jpg')}")
      else
      File.symlink("#{determine_folder(release.id, thirty_thumb_packshot, 'jpg')}", "#{determine_folder(release.id, thirty_thumb_sym, 'jpg')}")
    end
    #print "#{determine_folder(release.id, thirty_thumb_packshot, 'jpg')}"
        end

        img.thumbnail(60) do |thumb|
          thumb.save(determine_folder(release.id, sixty_thumb_packshot, 'jpg'))
    symlink = File.symlink?(determine_folder(release.id, sixty_thumb_sym, 'jpg'))
    if symlink == true
      File.delete(determine_folder(release.id, sixty_thumb_sym, 'jpg'))
      File.symlink("#{determine_folder(release.id, sixty_thumb_packshot, 'jpg')}", "#{determine_folder(release.id, sixty_thumb_sym, 'jpg')}")
      else
      File.symlink("#{determine_folder(release.id, sixty_thumb_packshot, 'jpg')}", "#{determine_folder(release.id, sixty_thumb_sym, 'jpg')}")
    end
    #print "#{determine_folder(release.id, sixty_thumb_packshot, 'jpg')}"
        end

        img.thumbnail(200) do |thumb|
          thumb.save(determine_folder(release.id, twohundred_thumb_packshot, 'jpg'))
    symlink = File.symlink?(determine_folder(release.id, twohundred_thumb_sym, 'jpg'))
    if symlink == true
      File.delete(determine_folder(release.id, twohundred_thumb_sym, 'jpg'))
      File.symlink("#{determine_folder(release.id, twohundred_thumb_packshot, 'jpg')}", "#{determine_folder(release.id, twohundred_thumb_sym, 'jpg')}")
      else
      File.symlink("#{determine_folder(release.id, twohundred_thumb_packshot, 'jpg')}", "#{determine_folder(release.id, twohundred_thumb_sym, 'jpg')}")
    end
    #print "#{determine_folder(release.id, twohundred_thumb_packshot, 'jpg')}"
        end

      end
      FileUtils.cp("#{packshot}", "#{determine_folder(release.id, source_packshot, 'jpg')}")
      else
    end          

    release_artist = ReleaseArtist.find(:first,
      :conditions => {:release_id => release.id,
        :artist_id => albumartist.id,
          :artist_type_id => artist_type.id
      }
    )      

    release_artist = ReleaseArtist.create(:release_id => release.id,
      :artist_id => albumartist.id,
        :artist_type_id => artist_type.id) unless release_artist

    release_track = ReleaseTrack.find(:first, 
      :conditions => {:release_id => release.id,
        :track_id => track.id,
          :sequence => tagged_file["tracknumber"]
        }
    )

    release_track = ReleaseTrack.create(:track_id => track.id, 
      :release_id => release.id, 
        :sequence => tagged_file["tracknumber"]) unless release_track

    label = tagged_file["label"]
    unless label.nil?
    label = Label.find(:first,
      :conditions => {:name => tagged_file["label"]
      }
    )
    label = Label.create(:name => tagged_file["label"]) unless label

    release_date = tagged_file["date"]
    release_date += '-01-01' if release_date && (release_date.length == 4)
    release_date += '-01' if release_date && (release_date.length == 7)
    release_event = ReleaseEvent.find(:first,
      :conditions => {:release_id => release.id, 
        :label_id => label.id, 
          :release_date => release_date#,
            #:cat_num => tagged_file["catalognumber"],
              #:barcode => tagged_file["barcode"] ## commented out until I can devise a smarter way of creating/updating release events
      }
    )
    release_event = ReleaseEvent.create(:release_id => release.id, 
      :label_id => label.id, 
        :release_date => release_date#,
          #:cat_num => tagged_file["catalognumber"],
            #:barcode => tagged_file["barcode"] ## commented out until I can devise a smarter way of creating/updating release events
            ) unless release_event

    end # labels

    genre = tagged_file["genre"]
    unless genre.nil?
    genre.split(/\s*,\s*/).each do |genrename| 

    genre = Genre.find(:first,
      :conditions => {:name => genrename}
    )
    genre = Genre.create(:name => genrename) unless genre  

        release_genre = ReleaseGenre.find(:first, 
          :conditions => {:release_id => release.id,
            :genre_id => genre.id
          }
        )
        release_genre = ReleaseGenre.create(:genre_id => genre.id, 
          :release_id => release.id) unless release_genre

        track_genre = TrackGenre.find(:first,
          :conditions => {:track_id => track.id,
            :genre_id => genre.id
          }
        )      
        track_genre = TrackGenre.create(:genre_id => genre.id,
          :track_id => track.id) unless track_genre   

          end # releases
        end # genre if
      end # genre do
#=begin // uncomment to only import data and packshots
    oggenc = '/usr/bin/oggenc'
    oggargs = [
      '-q3' # we could go to -q(uality)4
    ]

    system("#{oggenc} #{oggargs.join} \"#{path_to_file}\" -o \"#{determine_folder(track.id, ogg_audio, 'ogg')}\"")

    symlink = File.symlink?(determine_folder(track.id, ogg_sym, 'ogg'))
      if symlink == true
        File.delete("#{determine_folder(track.id, ogg_sym, 'ogg')}")
        File.symlink("#{determine_folder(track.id, ogg_audio, 'ogg')}", "#{determine_folder(track.id, ogg_sym, 'ogg')}")
        else
        File.symlink("#{determine_folder(track.id, ogg_audio, 'ogg')}", "#{determine_folder(track.id, ogg_sym, 'ogg')}")
      end

    faac = '/usr/bin/faac'
    flac = '/usr/bin/flac'
    faacargs = [
      '-q 100' 
    ]

    flacargs = [
      '--decode', # required to decode
      '--stdout'
    ]
    track_id_to_string = track.id.to_s
    system("#{flac} #{flacargs.join(" ")} \"#{path_to_file}\" | #{faac} #{faacargs.join} -o \"#{determine_folder(track.id, m4a_audio, 'm4a')}\" -")

    symlink = File.symlink?("#{determine_folder(track.id, m4a_sym, 'm4a')}")
      if symlink == true
      File.delete("#{determine_folder(track.id, m4a_sym, 'm4a')}")
      File.symlink("#{determine_folder(track.id, m4a_audio, 'm4a')}", "#{determine_folder(track.id, m4a_sym, 'm4a')}")
      else
      File.symlink("#{determine_folder(track.id, m4a_audio, 'm4a')}", "#{determine_folder(track.id, m4a_sym, 'm4a')}")
    end

#=end // uncomment to only import data and packshots
    end # dir.glob
    Artist.rebuild_index #currently crashing things. Annoying.
    Track.rebuild_index
    Label.rebuild_index
    Genre.rebuild_index
    Release.rebuild_index
    User.rebuild_index
    redirect_to(user_path(session[:user_id])) 
  end # index

end # class