defmodule DaProductApp.Repo.Migrations.CreateReqPays do
  use Ecto.Migration

  def change do
    create table(:req_pays) do
      # Core UPI fields for payment request
      add :txn_id, :string, size: 50
      add :msg_id, :string, null: false, size: 35
      add :org_id, :string, null: false, size: 10
      add :ref_id, :string, size: 35
      add :ref_url, :string, size: 255
      add :payer_addr, :string, size: 255
      add :payee_addr, :string, size: 255
      add :payer_name, :string, size: 100
      add :payee_name, :string, size: 100
      add :network_inst_id, :string, size: 20
      add :payment_type, :string, size: 20
      add :payment_purpose, :string, size: 100

      # Amount fields
      add :amount, :decimal, precision: 18, scale: 2, null: false
      add :currency, :string, size: 3, null: false

      # Response fields
      add :response_code, :string, size: 10
      add :response_message, :string, size: 255
      add :payment_status, :string, size: 20
      add :settlement_status, :string, size: 20
      add :npci_txn_id, :string, size: 50
      add :rrn, :string, size: 50

      # International fields
      add :corridor, :string, size: 20
      add :partner_txn_id, :string, size: 50
      add :fx_rate, :decimal, precision: 18, scale: 8
      add :base_amount, :decimal, precision: 18, scale: 6
      add :base_currency, :string, size: 3

      # QR specific fields
      add :qr_string, :text
      add :qr_medium, :string, size: 20
      add :merchant_category_code, :string, size: 10
      add :merchant_vpa, :string, size: 255

      # Status and tracking
      add :status, :string, null: false, default: "PENDING", size: 20
      add :validation_type, :string, null: false, size: 20
      add :error_code, :string, size: 10
      add :error_message, :string, size: 255

      # Timestamps
      add :npci_request_received_at, :utc_datetime
      add :npci_response_sent_at, :utc_datetime
      add :processing_duration_ms, :integer
      add :paid_at, :utc_datetime

      # Foreign keys
      add :transaction_id, :bigint
      add :partner_id, :binary, size: 16
      add :merchant_id, :bigint

      # Store raw XML as hashes/blobs for audit
      add :req_xml_hash, :binary
      add :resp_xml_hash, :binary

      timestamps(type: :utc_datetime)
    end

    create unique_index(:req_pays, [:msg_id])
    create index(:req_pays, [:transaction_id])
    create index(:req_pays, [:org_id])
    create index(:req_pays, [:status])
    create index(:req_pays, [:validation_type])
    create index(:req_pays, [:payment_status])
    create index(:req_pays, [:partner_id])
    create index(:req_pays, [:merchant_id])
    create index(:req_pays, [:npci_txn_id])
    create index(:req_pays, [:rrn])
    create index(:req_pays, [:corridor])
    create index(:req_pays, [:npci_request_received_at])
  end
end