class TeamRosterMember < ApplicationRecord
  CATEGORIES = %w[staff coach manager player].freeze
  # Ordine di visualizzazione in pagina organico
  DISPLAY_ORDER = %w[coach manager player staff].freeze
  CATEGORY_LABELS = {
    "staff" => "Staff",
    "coach" => "Allenatori",
    "manager" => "Dirigenti",
    "player" => "Giocatori"
  }.freeze

  VOLLEYBALL_PLAYER_ROLES = %w[
    Schiacciatore
    Opposto
    Centrale
    Palleggiatore
    Libero
    Universale
  ].freeze

  belongs_to :team

  has_one_attached :photo_file

  validates :full_name, presence: true
  validates :category, inclusion: { in: CATEGORIES }
  validates :jersey_number, numericality: { only_integer: true, greater_than: 0, less_than: 100 }, allow_nil: true
  validate :photo_file_type, if: -> { photo_file.attached? }
  validate :player_role_label_valid, if: -> { category == "player" && role_label.present? }

  before_validation :assign_position, on: :create

  scope :ordered, -> { order(:position, :created_at) }
  scope :by_category, ->(cat) { where(category: cat).ordered }

  def category_label
    CATEGORY_LABELS[category] || category
  end

  def initials
    parts = full_name.to_s.split(/\s+/).reject(&:blank?)
    return "?" if parts.empty?

    parts.first(2).map { |p| p[0] }.join.upcase
  end

  def photo_url
    return unless photo_file.attached?

    Rails.application.routes.url_helpers.rails_blob_path(photo_file, only_path: true)
  end

  def display_role
    role_label.presence || default_role_label
  end

  private

  def assign_position
    return if position.positive? || team.blank?

    max_pos = team.roster_members.where(category: category).maximum(:position) || -1
    self.position = max_pos + 1
  end

  def default_role_label
    case category
    when "coach" then "Allenatore"
    when "manager" then "Dirigente"
    when "staff" then "Staff"
    when "player" then jersey_number.present? ? "Giocatore ##{jersey_number}" : "Giocatore"
    else category
    end
  end

  def player_role_label_valid
    return if role_label.in?(VOLLEYBALL_PLAYER_ROLES)

    errors.add(:role_label, "non è un ruolo pallavolo valido")
  end

  def photo_file_type
    return if photo_file.content_type.in?(%w[image/png image/jpeg image/webp])

    errors.add(:photo_file, "deve essere PNG, JPEG o WebP")
  end
end