require_relative 'person/override-dates.rb'

module ASF

  #
  # An instance of this class represents a person.  Data comes from a variety
  # of sources: LDAP, <tt>asf--authorization-template</tt>, <tt>iclas.txt</tt>,
  # <tt>members.txt</tt>, <tt>nominated-members.txt</tt>, and
  # <tt>potential-member-watch-list.txt</tt>.

  class Person
    # sort support

    def self.asciize(name)
      if name.match %r{[^\x00-\x7F]}
        # digraphs.  May be culturally sensitive
        name.gsub! %r{\u00df}, 'ss'
        name.gsub! %r{\u00e4|a\u0308}, 'ae'
        name.gsub! %r{\u00e5|a\u030a}, 'aa'
        name.gsub! %r{\u00e6}, 'ae'
        name.gsub! %r{\u00f1|n\u0303}, 'ny'
        name.gsub! %r{\u00f6|o\u0308}, 'oe'
        name.gsub! %r{\u00fc|u\u0308}, 'ue'

        # latin 1
        name.gsub! %r{\u00c9}, 'e'
        name.gsub! %r{\u00d3}, 'o'
        name.gsub! %r{[\u00e0-\u00e5]}, 'a'
        name.gsub! %r{\u00e7}, 'c'
        name.gsub! %r{[\u00e8-\u00eb]}, 'e'
        name.gsub! %r{[\u00ec-\u00ef]}, 'i'
        name.gsub! %r{[\u00f2-\u00f6]|\u00f8}, 'o'
        name.gsub! %r{[\u00f9-\u00fc]}, 'u'
        name.gsub! %r{[\u00fd\u00ff]}, 'y'

        # Latin Extended-A
        name.gsub! %r{[\u0100-\u0105]}, 'a'
        name.gsub! %r{[\u0106-\u010d]}, 'c'
        name.gsub! %r{[\u010e-\u0111]}, 'd'
        name.gsub! %r{[\u0112-\u011b]}, 'e'
        name.gsub! %r{[\u011c-\u0123]}, 'g'
        name.gsub! %r{[\u0124-\u0127]}, 'h'
        name.gsub! %r{[\u0128-\u0131]}, 'i'
        name.gsub! %r{[\u0132-\u0133]}, 'ij'
        name.gsub! %r{[\u0134-\u0135]}, 'j'
        name.gsub! %r{[\u0136-\u0138]}, 'k'
        name.gsub! %r{[\u0139-\u0142]}, 'l'
        name.gsub! %r{[\u0143-\u014b]}, 'n'
        name.gsub! %r{[\u014C-\u0151]}, 'o'
        name.gsub! %r{[\u0152-\u0153]}, 'oe'
        name.gsub! %r{[\u0154-\u0159]}, 'r'
        name.gsub! %r{[\u015a-\u0162]}, 's'
        name.gsub! %r{[\u0162-\u0167]}, 't'
        name.gsub! %r{[\u0168-\u0173]}, 'u'
        name.gsub! %r{[\u0174-\u0175]}, 'w'
        name.gsub! %r{[\u0176-\u0178]}, 'y'
        name.gsub! %r{[\u0179-\u017e]}, 'z'

        # denormalized diacritics
        name.gsub! %r{[\u0300-\u036f]}, ''
      end

      name.strip.gsub %r{[^\w]+}, '-'
    end

    # generational suffixes
    SUFFIXES = /^([Jj][Rr]\.?|I{2,3}|I?V|VI{1,3}|[A-Z]\.)$/

    # rearrange line in an order suitable for sorting
    def self.sortable_name(name)
      name = name.split.reverse
      suffix = (name.shift if name.first =~ SUFFIXES)
      suffix += ' ' + name.shift if name.first =~ SUFFIXES
      name << name.shift
      # name << name.shift if name.first=='van'
      name.last.sub! %r{^IJ}, 'Ij'
      name.unshift(suffix) if suffix
      name.map! {|word| asciize(word)}
      name.reverse.join(' ').downcase
    end

    # parse a name into LDAP fields
    def self.ldap_name(name)
      words = name.gsub(',', '').split(' ')
      result = {'cn' => name}
      result['title'] = words.shift if words.first == 'Dr.' or words.first == 'Dr'
      if words.last =~ /^Ph\.D\.?/
        title = words.pop # Always pop (||= short-circuits the pop)
        result['title'] ||= title
      end 
      result['generationQualifier'] = words.pop if words.last =~ SUFFIXES
      result['givenName'] = words.shift # TODO does gn allow multiple words?
      # extract surnames like van Gogh etc
      if words.size >= 3 and words[-3..-2] == %w(de la) or words[-3..-2] == %w(van der) or words[-3..-2] == %w(van de) or words[-3..-2] == %w(van den) or words[-3..-2] == %w(von der)
        result['sn'] = words[-3..-1].join(' ')
        result['unused'] = words[0..-4]
      elsif words.size >= 2 and %w(von van Van de De del Del den le Le O Di Du dos St.).include?  words[-2]
        result['sn'] = words[-2..-1].join(' ')
        result['unused'] = words[0..-3]
      else
        result['sn'] = words.pop
        result['unused'] = words
      end 
      result
    end

    # return name in a sortable order (last name first)
    def sortable_name
      Person.sortable_name(self.public_name)
    end

    # determine account creation date.  Notes:
    # *  LDAP info is not accurate for dates prior to 2009.  See
    #    person/override-dates.rb
    # *  createTimestamp isn't loaded by default (but can either be preloaded
    #    or fetched explicitly)
    def createTimestamp
      result = @@create_date[name] 
      result ||= attrs['createTimestamp'][0] rescue nil # in case not loaded
      result ||= ASF.search_one(base, "uid=#{name}", 'createTimestamp')[0][0]
      result
    end

    def createDate
      createTimestamp[0..7]
    end

    # return person's public name, searching a variety of sources, starting
    # with iclas.txt, then LDAP, and finally the archives.
    def public_name
      return icla.name if icla
      cn = [attrs['cn']].flatten.first
      cn.force_encoding('utf-8') if cn.respond_to? :force_encoding
      return cn if cn
      ASF.search_archive_by_id(name)
    end

    # Returns <tt>true</tt> if this person is listed as an ASF member in
    # _either_ LDAP or <tt>members.txt</tt>.  Note: LDAP includes
    # infrastructure staff members that may not be ASF Members.
    def asf_member?
      ASF::Member.status[name] or ASF.members.include? self
    end

    # Returns <tt>true</tt> if this person is listed as an ASF member in
    # _either_ LDAP or <tt>members.txt</tt> or this person is listed as
    # an PMC chair in LDAP.
    def asf_officer_or_member?
      asf_member? or ASF.pmc_chairs.include? self
    end
  end
end