# frozen_string_literal: true

require "test_helper"

class EncryptionVerificationTest < ActiveSupport::TestCase
  # Skip all tests in this file if encryption is not configured.
  # This allows the test suite to pass in environments without encryption keys.
  setup do
    skip "Encryption not configured" unless User.encryption_ready?
  end

  # ============================================================================
  # USER MODEL TESTS
  # ============================================================================

  test "user email is encrypted and can be looked up" do
    user = User.create!(
      email: "encryption-test@example.com",
      password: "password123",
      family: families(:dylan_family)
    )

    # Verify we can find by email (deterministic encryption)
    found = User.find_by(email: "encryption-test@example.com")
    assert_equal user.id, found.id

    # Verify case-insensitive lookup works
    found_upper = User.find_by(email: "ENCRYPTION-TEST@EXAMPLE.COM")
    assert_equal user.id, found_upper.id

    # Clean up
    user.destroy
  end

  test "user email uniqueness validation works with encryption" do
    user1 = User.create!(
      email: "unique-test@example.com",
      password: "password123",
      family: families(:dylan_family)
    )

    # Should fail uniqueness
    user2 = User.new(
      email: "unique-test@example.com",
      password: "password123",
      family: families(:dylan_family)
    )
    assert_not user2.valid?
    assert user2.errors[:email].any?

    user1.destroy
  end

  test "user names are encrypted and retrievable" do
    user = users(:family_admin)
    original_first = user.first_name
    original_last = user.last_name

    # Update names
    user.update!(first_name: "EncryptedFirst", last_name: "EncryptedLast")
    user.reload

    assert_equal "EncryptedFirst", user.first_name
    assert_equal "EncryptedLast", user.last_name

    # Restore
    user.update!(first_name: original_first, last_name: original_last)
  end

  test "user MFA otp_secret is encrypted" do
    user = users(:family_admin)

    # Setup MFA
    user.setup_mfa!
    assert user.otp_secret.present?

    # Reload and verify we can still read it
    user.reload
    assert user.otp_secret.present?

    # Verify provisioning URI works
    assert user.provisioning_uri.present?

    # Clean up
    user.disable_mfa!
  end

  test "user unconfirmed_email is encrypted" do
    user = users(:family_admin)
    original_email = user.email

    # Set unconfirmed email
    user.update!(unconfirmed_email: "new-email@example.com")
    user.reload

    assert_equal "new-email@example.com", user.unconfirmed_email

    # Clean up
    user.update!(unconfirmed_email: nil)
  end

  # ============================================================================
  # INVITATION MODEL TESTS
  # ============================================================================

  test "invitation token is encrypted and lookups work" do
    invitation = Invitation.create!(
      email: "invite-test@example.com",
      role: "member",
      inviter: users(:family_admin),
      family: families(:dylan_family)
    )

    # Token should be present
    assert invitation.token.present?
    token_value = invitation.token

    # Should be able to find by token
    found = Invitation.find_by(token: token_value)
    assert_equal invitation.id, found.id

    invitation.destroy
  end

  test "invitation email is encrypted and scoped uniqueness works" do
    invitation1 = Invitation.create!(
      email: "scoped-invite@example.com",
      role: "member",
      inviter: users(:family_admin),
      family: families(:dylan_family)
    )

    # Same email, same family should fail
    invitation2 = Invitation.new(
      email: "scoped-invite@example.com",
      role: "member",
      inviter: users(:family_admin),
      family: families(:dylan_family)
    )
    assert_not invitation2.valid?

    invitation1.destroy
  end

  # ============================================================================
  # INVITE CODE MODEL TESTS
  # ============================================================================

  test "invite code token is encrypted and claim works" do
    token = InviteCode.generate!
    assert token.present?

    # Should be able to claim
    result = InviteCode.claim!(token)
    assert result

    # Should not be able to claim again (destroyed)
    result2 = InviteCode.claim!(token)
    assert_nil result2
  end

  test "invite code case-insensitive lookup works" do
    invite_code = InviteCode.create!
    token = invite_code.token

    # Should find with lowercase
    found = InviteCode.find_by(token: token.downcase)
    assert_equal invite_code.id, found.id

    invite_code.destroy
  end

  # ============================================================================
  # SESSION MODEL TESTS
  # ============================================================================

  test "session user_agent is encrypted" do
    Current.user_agent = "Mozilla/5.0 Test Browser"
    Current.ip_address = "192.168.1.100"

    begin
      session = Session.create!(user: users(:family_admin))

      assert_equal "Mozilla/5.0 Test Browser", session.user_agent
      assert session.ip_address_digest.present?

      # Reload and verify
      session.reload
      assert_equal "Mozilla/5.0 Test Browser", session.user_agent

      # Verify IP hash is consistent
      expected_hash = Digest::SHA256.hexdigest("192.168.1.100")
      assert_equal expected_hash, session.ip_address_digest

      session.destroy
    ensure
      Current.user_agent = nil
      Current.ip_address = nil
    end
  end

  # ============================================================================
  # MOBILE DEVICE MODEL TESTS
  # ============================================================================

  test "mobile device device_id is encrypted and uniqueness works" do
    device = MobileDevice.create!(
      user: users(:family_admin),
      device_id: "test-device-12345",
      device_name: "Test iPhone",
      device_type: "ios"
    )

    # Should be able to find by device_id
    found = MobileDevice.find_by(device_id: "test-device-12345", user: users(:family_admin))
    assert_equal device.id, found.id

    # Same device_id for same user should fail
    device2 = MobileDevice.new(
      user: users(:family_admin),
      device_id: "test-device-12345",
      device_name: "Another iPhone",
      device_type: "ios"
    )
    assert_not device2.valid?

    # Same device_id for different user should work
    device3 = MobileDevice.new(
      user: users(:family_member),
      device_id: "test-device-12345",
      device_name: "Their iPhone",
      device_type: "ios"
    )
    assert device3.valid?

    device.destroy
  end

  # ============================================================================
  # PROVIDER ITEM TESTS (if fixtures exist)
  # ============================================================================

  test "lunchflow item credentials and payloads are encrypted" do
    skip "No lunchflow items in fixtures" unless LunchflowItem.any?

    item = LunchflowItem.first
    original_payload = item.raw_payload

    # Should be able to read
    assert item.api_key.present? || item.raw_payload.present?

    # Update payload
    item.update!(raw_payload: { test: "data" })
    item.reload

    assert_equal({ "test" => "data" }, item.raw_payload)

    # Restore
    item.update!(raw_payload: original_payload)
  end

  test "lunchflow account payloads are encrypted" do
    skip "No lunchflow accounts in fixtures" unless LunchflowAccount.any?

    account = LunchflowAccount.first
    original_payload = account.raw_payload

    # Should be able to read encrypted fields without error
    account.reload
    assert_nothing_raised { account.raw_payload }
    assert_nothing_raised { account.raw_transactions_payload }

    # Update and verify
    account.update!(raw_payload: { account_test: "value" })
    account.reload

    assert_equal({ "account_test" => "value" }, account.raw_payload)

    # Restore
    account.update!(raw_payload: original_payload)
  end

  # ============================================================================
  # DATABASE VERIFICATION TESTS
  # ============================================================================

  test "encrypted fields are not stored as plaintext in database" do
    user = User.create!(
      email: "plaintext-check@example.com",
      password: "password123",
      first_name: "PlaintextFirst",
      last_name: "PlaintextLast",
      family: families(:dylan_family)
    )

    # Query raw database value
    raw_email = ActiveRecord::Base.connection.select_value(
      User.where(id: user.id).select(:email).to_sql
    )

    # Should NOT be plaintext (should be encrypted blob or different)
    assert_not_equal "plaintext-check@example.com", raw_email,
      "Email should be encrypted in database, not stored as plaintext"

    user.destroy
  end
end