class PayoutService
  def initialize(payout)
    @payout = payout
  end

  # Check if user is in France or doesn't have a Stripe account (manual processing)
  def process_with_stripe_or_manual
    if should_process_manually?
      process_manually!
    else
      process_with_stripe!
    end
  end

  # Generate payout summary for manual transfer
  def generate_transfer_summary
    return nil unless @payout.approved? || @payout.processing?

    {
      payout_id: @payout.id,
      recipient: @payout.user.name,
      account_holder: @payout.user.account_holder_name,
      bank_name: @payout.user.bank_name,
      iban: @payout.user.iban,
      amount_euros: @payout.net_amount_euros,
      description: "Payout for event: #{@payout.event.name}",
      event_name: @payout.event.name,
      event_date: @payout.event.date,
      total_orders: @payout.total_orders_count,
      refunded_orders: @payout.refunded_orders_count
    }
  end

  # Validate banking information before processing
  def validate_banking_info
    errors = []
    user = @payout.user

    errors << "Missing IBAN" unless user.iban.present?
    errors << "Missing bank name" unless user.bank_name.present?
    errors << "Missing account holder name" unless user.account_holder_name.present?
    errors << "Invalid IBAN format" if user.iban.present? && !valid_iban?(user.iban)

    errors
  end

  private

  def should_process_manually?
    # For now, we'll assume manual processing for all users
    # In a real implementation, this could check the user's country
    !@payout.user.has_stripe_account?
  end

  def process_manually!
    @payout.update!(status: :processing)
    
    begin
      # For manual processing, we just mark it as completed
      # In a real implementation, this would trigger notifications to admin
      @payout.mark_completed!(User.admin.first || User.first, "Manual processing completed")
      
      Rails.logger.info "Manual payout processed for payout #{@payout.id} for event #{@payout.event.name}"
    rescue => e
      @payout.update!(status: :failed)
      Rails.logger.error "Manual payout failed for payout #{@payout.id}: #{e.message}"
      raise e
    end
  end

  def process_with_stripe!
    @payout.update!(status: :processing)
  end

  def valid_iban?(iban)
    # Basic IBAN validation (simplified)
    iban.match?(/\A[A-Z]{2}[0-9]{2}[A-Z0-9]{4}[0-9]{7}([A-Z0-9]?){0,16}\z/)
  end

  def update_earnings_status
    @payout.event.earnings.where(status: 0).update_all(status: 1)  # pending to paid
  end
end