import assert from 'node:assert/strict';
import test from 'node:test';
import { createElement, isValidElement, type ReactElement, type ReactNode } from 'react';
import { renderToStaticMarkup } from 'react-dom/server';
import { PledgeClaimFields, pledgeClaimInputError } from '../components/pledge-claim-fields';

type ElementProps = { children?: ReactNode; [key: string]: unknown };
type Element = ReactElement<ElementProps>;
function elements(node: ReactNode): Element[] {
  if (Array.isArray(node)) return node.flatMap(elements);
  if (!isValidElement<ElementProps>(node)) return [];
  return [node, ...elements(node.props.children)];
}
function input(props: Parameters<typeof PledgeClaimFields>[0]) {
  const field = elements(PledgeClaimFields(props)).find(element => element.props.id === 'truth-pledge-minimum');
  assert.ok(field && typeof field.props.onChange === 'function');
  return field;
}
function edit(props: Parameters<typeof PledgeClaimFields>[0], value: number) {
  (input(props).props.onChange as (event: { currentTarget: { valueAsNumber: number } }) => void)(
    { currentTarget: { valueAsNumber: value } });
}

void test('ally funding question checks positive safe totals and respects disabled controls', () => {
  const changes: number[] = [];
  const props = {minimum: 2, allyName: 'House Guild', disabled: false, onChange: (value: number) => changes.push(value)};
  assert.equal(pledgeClaimInputError(props.minimum), null);
  edit(props, 1); edit(props, Number.MAX_SAFE_INTEGER);
  for (const value of [0, -1, 1.5, NaN, Infinity, Number.MAX_SAFE_INTEGER + 1]) {
    assert.ok(pledgeClaimInputError(value));
    edit(props, value);
  }
  edit({ ...props, disabled: true }, 3);
  assert.deepEqual(changes, [1, Number.MAX_SAFE_INTEGER]);
  assert.match(renderToStaticMarkup(createElement(PledgeClaimFields, { ...props, minimum: 0 })), /role="alert"/);
});

void test('ally funding explanation distinguishes an update, previous pledge and payment', () => {
  const html = renderToStaticMarkup(createElement(PledgeClaimFields, {
    minimum: 3, allyName: 'House Guild', disabled: false, onChange() {},
  }));
  assert.match(html, /Current ally: House Guild/);
  assert.match(html, /after the answer during this phase/);
  assert.match(html, /same total again counts/);
  assert.match(html, /earlier pledge alone does not/);
  assert.match(html, /not a payment/);
  assert.doesNotMatch(html, /current balance|available wallet/i);
});