class DxTitleSearch

# File lib/dxtitle_search.rb, line 10
def initialize(obj=nil, sources: nil, level: 1, debug: false)

  @debug = debug
  @indexer = Indexer101.new debug: debug
  @level = level

  s = if sources then
  
    dx = Dynarex.new(sources)      
    puts 'before scan_dxindex' if @debug
    a = dx.all.map(&:uri)
    puts 'a: ' + a.inspect if @debug
    @indexer.scan_dxindex a, level: level
  
  elsif obj and (obj.is_a?(DxLite) or obj.is_a?(Dynarex)) or obj.lines.length < 2 

    @indexer.scan_dxindex  obj, level: level
      
  end

  #jr230620 @indexer.build

end

# File lib/dxtitle_search.rb, line 34
def search(keywords, minchars: 3)    

  a2 = @indexer.search keywords.split(/[\s:"!\?\(\)£]+(?=[\w#_'-]+)/), \
      minchars: minchars
  # format each result as a Hash object
  a3 = a2.map do |date, title, url|

    {title: title, url: url, date: date}

  end

  puts 'a3: ' + a3.inspect if @debug
  
  @dx = Dynarex.new('results/result(title, url, date)').import(a3)
  
  def a3.to_dx()
    Dynarex.new('results/result(title, url, date)').import(self)
  end
  
  def a3.to_tags()
    a = self.map {|x| x[:title].scan(/(?<=#)(\w+)/)}.flatten
    a.uniq.sort.map {|x| [x, a.count(x)]}
  end    
  
  def a3.search(keywords)
    
    dx = Dynarex.new('results/result(title, url, date)').import(self)

    level = keywords[0] == '#' ? 0 : 1
    dts = DxTitleSearch.new dx, level: level
    dts.search keywords
    
  end
  
  def a3.tag_search(keywords)
    
    dx = Dynarex.new('results/result(title, url, date)').import(self)

    level = keywords[0] == '#' ? 0 : 1
    dts = DxTitleSearch.new dx, level: level
    dts.tag_search keywords
    
  end    

  return a3

end

# File lib/dxtitle_search.rb, line 82
def tag_search(keywords)    
  r = @indexer.lookup *keywords.split(/[\W]+(?=[\w]+)/).map {|x| "#" + x}
  r.map {|x| x.to_s[1..-1]}
end

# File lib/dxtitle_search.rb, line 87
def to_tags()
  
  a = @indexer.index.map do |key, value|
    [key.to_s[1..-1], value.length]
  end
  
  a.sort_by(&:first)
  
end