/* @vitest-environment jsdom */

import { fireEvent, render, screen } from '@testing-library/react';
import type { FormEvent } from 'react';
import { describe, expect, it, vi } from 'vitest';

import { EditorAgentDraftTextarea } from './EditorAgentDraftTextarea.tsx';

describe('EditorAgentDraftTextarea', () => {
  it('forwards draft changes and paste events through the Agent wrapper', () => {
    const onChange = vi.fn();
    const onPaste = vi.fn();

    render(
      <EditorAgentDraftTextarea
        value=""
        onChange={onChange}
        onPaste={onPaste}
      />,
    );

    const input = screen.getByLabelText(
      '发送给画布 Agent',
    ) as HTMLTextAreaElement;
    expect(input.className).toContain('auto-grow-text-area');
    expect(input.className).toContain(
      'editor-agent-conversation__draft-input',
    );

    fireEvent.change(input, { target: { value: '新草稿' } });
    expect(onChange).toHaveBeenCalledWith('新草稿');
    fireEvent.paste(input);
    expect(onPaste).toHaveBeenCalledTimes(1);
  });

  it('submits on Enter and keeps line breaks or IME confirmation from submitting', () => {
    const onSubmit = vi.fn((event: FormEvent<HTMLFormElement>) => {
      event.preventDefault();
    });
    render(
      <form onSubmit={onSubmit}>
        <EditorAgentDraftTextarea value="草稿" onChange={vi.fn()} />
      </form>,
    );

    const input = screen.getByLabelText('发送给画布 Agent');
    fireEvent.keyDown(input, { key: 'Enter', shiftKey: true });
    expect(onSubmit).not.toHaveBeenCalled();

    fireEvent.keyDown(input, {
      key: 'Enter',
      isComposing: false,
      keyCode: 229,
    });
    expect(onSubmit).not.toHaveBeenCalled();

    fireEvent.keyDown(input, { key: 'Enter' });
    expect(onSubmit).toHaveBeenCalledTimes(1);
  });
});