meissadia/hoopscrape

require_relative './Navigator'
# Access NBA roster data
class NbaRoster
  include NbaUrls
  include PrintUtils

  # @return [String] Coach Name
  attr_reader :coach

  # Returns Team Roster
  # @return [[[String]]] Player List Table ({ROSTER Row Description})
  # @see ROSTER
  attr_reader :players

  # Scrape Roster Data
  # @param team_id [String] Team ID
  # @example
  #     r = NbaRoster.new("UTA")
  #     r = NbaRoster.new('', 'test/data/rosterData.html')
  def initialize(args = {})
    if args[:team_id]
      url = formatTeamUrl(args[:team_id], teamRosterUrl) # Generate URL
      doc = Nokogiri::HTML(open(url)) # Get DOM
    elsif args[:file]
      doc = Nokogiri::HTML(open(args[:file]))
    end
    return if doc.nil?

    team_id ||= getTid(doc.title.split(/\d{4}/).first.strip)
    list      = doc.xpath('//div/div/table/tr')
    p_list    = list[2, list.length - 3] # Get Player Nodes

    @coach   = list[-1].children.first.text.split(':').last.strip # Read Coach Name
    @players = Navigator.new processPlayerTable(p_list, team_id, args[:format])
  end

  private

  # Collect Roster Data
  # @param table [[Nokogiri::XML::NodeSet]] Roster Table
  # @param team_id [String] Team ID
  # @return [[[String]]] Processed Roster Data
  def processPlayerTable(table, team_id, new_form)
    result = []
    table.each do |row|
      tmp = [team_id]    # Start row with Team ID
      row.children.each_with_index do |cell, cnt|
        processCell(cell, tmp, cnt)
      end
      result << tmp
    end
    return result.send(new_form, S_ROSTER) unless new_form.nil?
    result
  end

  # Extract and Normalize Player Data
  def processCell(cell, tmp, cnt)
    txt = cell.text.chomp.strip
    case cnt
    when 0, 2, 3, 5    # 0 Player No, 2 Position, 3 Age, 5 Weight
      tmp << txt
    when 1    # Player Name
      tmp << txt.tr("'", "\'")
      tmp << cell.children.first.attribute('href').text[%r{id/(\d+)}, 1] # Player ID
    when 4                                                      # Player Height
      tmp.concat(txt.split('-'))
    when 6                                                         # College
      tmp << txt.tr("'", "\'").strip
    when 7                                                         # Salary
      # Remove extraneous symbols & default to 0
      tmp << txt.delete('$').delete(',').strip.to_i.to_s
    end
  end
end