Class: MusicBox::Group

Inherits:
Object
  • Object
show all
Defined in:
lib/musicbox/group.rb

Defined Under Namespace

Classes: Item

Constant Summary collapse

InfoFileName = 
'info.json'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root:) ⇒ Group

Returns a new instance of Group.



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# File 'lib/musicbox/group.rb', line 13

def initialize(root:)
  @root = Path.new(root).expand_path
  reset
  load
end

Instance Attribute Details

#root ⇒ Object

Returns the value of attribute root.



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# File 'lib/musicbox/group.rb', line 5

def root
  @root
end

Class Method Details

.item_class ⇒ Object 



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# File 'lib/musicbox/group.rb', line 9

def self.item_class
  Item
end

Instance Method Details

#<<(item) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 45

def <<(item)
  add_item(item)
end

#[](id) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 41

def [](id)
  @items[id]
end

#add_item(item) ⇒ Object

Raises:



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# File 'lib/musicbox/group.rb', line 85

def add_item(item)
  raise Error, "Item does not have ID" if item.id.nil?
  raise Error, "Item already exists in #{@root}: #{item.id.inspect}" if @items[item.id]
  @items[item.id] = item
end

#delete_item(item) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 95

def delete_item(item)
  @items.delete(item.id)
end

#destroy! ⇒ Object 



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# File 'lib/musicbox/group.rb', line 122

def destroy!
  @root.rmtree if @root.exist?
end

#destroy_item(item) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 116

def destroy_item(item)
  dir = dir_for_id(id)
  dir.rmtree if dir.exist?
  delete_item(item)
end

#dir_for_id(id) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 70

def dir_for_id(id)
  @root / id
end

#has_item?(id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/musicbox/group.rb', line 91

def has_item?(id)
  @items.has_key?(id)
end

#item_class ⇒ Object 



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# File 'lib/musicbox/group.rb', line 23

def item_class
  self.class.item_class
end

#items ⇒ Object 



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# File 'lib/musicbox/group.rb', line 19

def items
  @items.values
end

#load ⇒ Object 



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# File 'lib/musicbox/group.rb', line 31

def load
  reset
  if @root.exist?
    @root.glob("*/#{InfoFileName}").each do |info_file|
      add_item(item_class.load(info_file.dirname))
    end
    ;;warn "* loaded #{@items.length} items from #{@root}"
  end
end

#new_item(id, args = {}) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 74

def new_item(id, args={})
  item = item_class.new(
    {
      id: id,
      dir: dir_for_id(id),
    }.merge(args)
  )
  add_item(item)
  item
end

#reset ⇒ Object 



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# File 'lib/musicbox/group.rb', line 27

def reset
  @items = {}
end

#save_item(id:, item: nil, &block) ⇒ Object

Raises:



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# File 'lib/musicbox/group.rb', line 99

def save_item(id:, item: nil, &block)
  raise Error, "ID is nil" unless id
  item = yield if block_given?
  raise Error, "Item is nil" unless item
  dir = dir_for_id(id)
  info_file = dir / InfoFileName
  dir.mkpath unless dir.exist?
;;warn "writing to #{info_file}"
  info_file.write(JSON.pretty_generate(item))
end

#save_item_if_new(id:, item: nil, &block) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 110

def save_item_if_new(id:, item: nil, &block)
  unless has_item?(id)
    save_item(id: id, item: item, &block)
  end
end

#search(query:, fields:, limit: nil) ⇒ Object 



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# File 'lib/musicbox/group.rb', line 49

def search(query:, fields:, limit: nil)
  found = []
  words = [query].flatten.join(' ').tokenize.sort.uniq - ['-']
  words.each do |word|
    regexp = Regexp.new(Regexp.quote(word), true)
    found += @items.values.select do |item|
      fields.find do |field|
        case (value = item.send(field))
        when Array
          value.find { |v| v.to_s =~ regexp }
        else
          value.to_s =~ regexp
        end
      end
    end
  end
  found = found.flatten.compact.uniq
  found = found[0..limit - 1] if limit
  found
end