module Billing
  class Payment < ApplicationRecord
    self.table_name = "billing_payments"

    STATUSES = %w[paid failed refunded].freeze

    belongs_to :club
    has_one :invoice, class_name: "Billing::Invoice", foreign_key: :billing_payment_id, dependent: :nullify

    validates :amount_cents, numericality: { greater_than: 0 }
    validates :currency, presence: true
    validates :status, inclusion: { in: STATUSES }
    validates :stripe_invoice_id, uniqueness: true, allow_nil: true

    scope :recent, -> { order(paid_at: :desc, created_at: :desc) }

    # Pagamenti pagati senza PDF fattura caricato (da gestire in admin).
    scope :awaiting_invoice_pdf, lambda {
      where(status: "paid").where(
        <<~SQL.squish,
          NOT EXISTS (
            SELECT 1 FROM billing_invoices bi
            INNER JOIN active_storage_attachments asa
              ON asa.record_type = 'Billing::Invoice'
              AND asa.record_id = bi.id
              AND asa.name = 'pdf'
            WHERE bi.billing_payment_id = billing_payments.id
          )
        SQL
      )
    }

    scope :with_invoice_pdf, lambda {
      where(status: "paid").where(
        <<~SQL.squish,
          EXISTS (
            SELECT 1 FROM billing_invoices bi
            INNER JOIN active_storage_attachments asa
              ON asa.record_type = 'Billing::Invoice'
              AND asa.record_id = bi.id
              AND asa.name = 'pdf'
            WHERE bi.billing_payment_id = billing_payments.id
          )
        SQL
      )
    }

    def awaiting_invoice_pdf?
      status == "paid" && !invoice&.pdf&.attached?
    end

    def amount_euros
      amount_cents / 100.0
    end

    def formatted_amount
      format("%.2f €", amount_euros)
    end

    def display_description
      PaymentDescription.for_payment(self)
    end

    def display_status
      { "paid" => "Pagato", "failed" => "Non riuscito", "refunded" => "Rimborsato" }[status] || status
    end

    def invoice_for_display
      invoice
    end
  end
end