Class: Lyricli::Lyricli

Inherits:

Object

• Object
• Lyricli::Lyricli

show all

Defined in:

lib/lyricli/lyricli.rb

Overview

Instance Method Summary (collapse)

• - (Object) check_params

  Exits with error when there is an empty field from the current track.

• - (Object) exit_with_error

  Raises an InvalidLyricsError which means we did not get any valid artist/song from any of the sources.

• - (String) get_lyrics

  Extracts the current track, validates it and requests the lyrics from our LyricsEngine.

• - (Lyricli) initialize constructor

  Constructor, initializes `@source_manager`.

• - (Object) set_current_track

  Set the `@current_track` instance variable by asking the SourceManager for its current track.

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# File 'lib/lyricli/lyricli.rb', line 8

def initialize
  @source_manager = SourceManager.new
end

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# File 'lib/lyricli/lyricli.rb', line 49

def check_params
  self.exit_with_error unless @current_track
  self.exit_with_error if @current_track[:artist].nil? or @current_track[:artist].empty?
  self.exit_with_error if @current_track[:song].nil? or @current_track[:song].empty?
end

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# File 'lib/lyricli/lyricli.rb', line 16

def exit_with_error
  raise Exceptions::InvalidLyricsError
end

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# File 'lib/lyricli/lyricli.rb', line 24

def get_lyrics

  begin
    set_current_track
    check_params
  rescue Exceptions::InvalidLyricsError
    return "No Artist/Song could be found :("
  end

  engine = LyricsEngine.new(@current_track[:artist], @current_track[:song])

  begin
    return engine.get_lyrics
  rescue Exceptions::LyricsNotFoundError
    return "Lyrics not found :("
  end
end

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# File 'lib/lyricli/lyricli.rb', line 44

def set_current_track
  @current_track = @source_manager.current_track
end