defmodule DaProductApp.Repo.Migrations.CreateTransactionsPhase2 do
  use Ecto.Migration

  def change do
    create table(:transactions) do
      add :org_txn_id, :string, null: false
      add :parent_qr_validation_id, references(:qr_validations, on_delete: :nilify_all)
      add :payer_addr, :string
      add :payee_addr, :string
      add :payee_mid, :string
      add :payer_bank_ref, :string
      add :foreign_amount, :decimal, precision: 18, scale: 6
      add :foreign_currency, :string, size: 3
      add :fx_rate, :decimal, precision: 18, scale: 8
      add :markup_pct, :decimal, precision: 7, scale: 4
      add :inr_amount, :decimal, precision: 18, scale: 2
      add :ver_token, :string
      add :network_inst_id, :string
      add :current_state, :string, null: false, default: "initiated"
      add :status, :string, null: false, default: "pending"
      add :debit_secured_at, :utc_datetime
      add :credit_requested_at, :utc_datetime
      add :credit_completed_at, :utc_datetime
      timestamps()
    end

    create unique_index(:transactions, [:org_txn_id])
    create index(:transactions, [:ver_token])
    create index(:transactions, [:current_state])
    create index(:transactions, [:status])

    create table(:transaction_events) do
      add :transaction_id, references(:transactions, on_delete: :delete_all), null: false
      add :seq, :integer, null: false
      add :event_type, :string, null: false
      add :payload, :map
      add :prev_hash, :binary
      add :hash, :binary, null: false
      add :inserted_at, :utc_datetime, null: false
    end

    create unique_index(:transaction_events, [:transaction_id, :seq])
    create index(:transaction_events, [:event_type])
  end
end