require "test_helper"

class CoinstatsAccount::ProcessorTest < ActiveSupport::TestCase
  setup do
    @family = families(:dylan_family)
    @coinstats_item = CoinstatsItem.create!(
      family: @family,
      name: "Test CoinStats Connection",
      api_key: "test_api_key_123"
    )
    @crypto = Crypto.create!
    @account = @family.accounts.create!(
      accountable: @crypto,
      name: "Test Crypto Account",
      balance: 1000,
      currency: "USD"
    )
    @coinstats_account = @coinstats_item.coinstats_accounts.create!(
      name: "Test Wallet",
      currency: "USD",
      current_balance: 2500
    )
    AccountProvider.create!(account: @account, provider: @coinstats_account)
  end

  test "skips processing when no linked account" do
    # Create an unlinked coinstats account
    unlinked_account = @coinstats_item.coinstats_accounts.create!(
      name: "Unlinked Wallet",
      currency: "USD",
      current_balance: 1000
    )

    processor = CoinstatsAccount::Processor.new(unlinked_account)

    # Should not raise, just return early
    assert_nothing_raised do
      processor.process
    end
  end

  test "updates account balance from coinstats account" do
    @coinstats_account.update!(current_balance: 5000.50)

    processor = CoinstatsAccount::Processor.new(@coinstats_account)
    processor.process

    @account.reload
    assert_equal BigDecimal("5000.50"), @account.balance
    assert_equal BigDecimal("5000.50"), @account.cash_balance
  end

  test "updates account currency from coinstats account" do
    @coinstats_account.update!(currency: "EUR")

    processor = CoinstatsAccount::Processor.new(@coinstats_account)
    processor.process

    @account.reload
    assert_equal "EUR", @account.currency
  end

  test "handles zero balance" do
    @coinstats_account.update!(current_balance: 0)

    processor = CoinstatsAccount::Processor.new(@coinstats_account)
    processor.process

    @account.reload
    assert_equal BigDecimal("0"), @account.balance
  end

  test "handles nil balance as zero" do
    @coinstats_account.update!(current_balance: nil)

    processor = CoinstatsAccount::Processor.new(@coinstats_account)
    processor.process

    @account.reload
    assert_equal BigDecimal("0"), @account.balance
  end

  test "processes transactions" do
    @coinstats_account.update!(raw_transactions_payload: [
      {
        type: "Received",
        date: "2025-01-15T10:00:00.000Z",
        coinData: { count: 1.0, symbol: "ETH", currentValue: 2000 },
        hash: { id: "0xabc123", explorerUrl: "https://etherscan.io/tx/0xabc123" }
      }
    ])

    processor = CoinstatsAccount::Processor.new(@coinstats_account)

    # Mock the transaction processor to verify it's called
    CoinstatsAccount::Transactions::Processor.any_instance
      .expects(:process)
      .returns({ success: true, total: 1, imported: 1, failed: 0, errors: [] })
      .once

    processor.process
  end

  test "continues processing when transaction processing fails" do
    @coinstats_account.update!(raw_transactions_payload: [
      { type: "Received", date: "2025-01-15T10:00:00.000Z" }
    ])

    processor = CoinstatsAccount::Processor.new(@coinstats_account)

    # Mock transaction processing to raise an error
    CoinstatsAccount::Transactions::Processor.any_instance
      .expects(:process)
      .raises(StandardError.new("Transaction processing error"))

    # Should not raise - error is caught and reported
    assert_nothing_raised do
      processor.process
    end

    # Balance should still be updated
    @account.reload
    assert_equal BigDecimal("2500"), @account.balance
  end

  test "normalizes currency codes" do
    @coinstats_account.update!(currency: "usd")

    processor = CoinstatsAccount::Processor.new(@coinstats_account)
    processor.process

    @account.reload
    assert_equal "USD", @account.currency
  end

  test "falls back to account currency when coinstats currency is nil" do
    @account.update!(currency: "GBP")
    # Use update_column to bypass validation
    @coinstats_account.update_column(:currency, "")

    processor = CoinstatsAccount::Processor.new(@coinstats_account)
    processor.process

    @account.reload
    # Empty currency falls through to account's existing currency
    assert_equal "GBP", @account.currency
  end

  test "raises error when account update fails" do
    # Make the account invalid by directly modifying a validation constraint
    Account.any_instance.stubs(:update!).raises(ActiveRecord::RecordInvalid.new(@account))

    processor = CoinstatsAccount::Processor.new(@coinstats_account)

    assert_raises(ActiveRecord::RecordInvalid) do
      processor.process
    end
  end
end