import React from 'react';
import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { selectOptionInTest } from '@grafana/ui';
import { RawInfluxQLEditor } from './RawInfluxQLEditor';
import { InfluxQuery } from '../types';

const query: InfluxQuery = {
  refId: 'A',
  query: 'test query 1',
  resultFormat: 'table',
  alias: 'alias42',
};

describe('RawInfluxQLEditor', () => {
  it('should render', () => {
    render(<RawInfluxQLEditor onRunQuery={() => null} onChange={() => null} query={query} />);
    const queryTextarea = screen.getByLabelText('query');
    const aliasInput = screen.getByLabelText('Alias by');
    const formatSelect = screen.getByLabelText('Format as');

    expect(formatSelect).toBeInTheDocument();
    expect(queryTextarea).toBeInTheDocument();
    expect(aliasInput).toBeInTheDocument();

    expect(queryTextarea).toHaveValue('test query 1');
    expect(aliasInput).toHaveValue('alias42');

    // the only way to validate the text-displayed on the select-box
    expect(screen.getByText('Table')).toBeInTheDocument();
  });

  it('should handle no-alias, no-query, no-resultFormat', () => {
    const emptyQuery = { refId: 'B' };
    render(<RawInfluxQLEditor onRunQuery={() => null} onChange={() => null} query={emptyQuery} />);

    const queryTextarea = screen.getByLabelText('query');
    const aliasInput = screen.getByLabelText('Alias by');

    const formatSelect = screen.getByLabelText('Format as');
    expect(formatSelect).toBeInTheDocument();

    expect(queryTextarea).toBeInTheDocument();
    expect(aliasInput).toBeInTheDocument();

    expect(queryTextarea).toHaveValue('');
    expect(aliasInput).toHaveValue('');

    // the only way to validate the text-displayed on the select-box
    expect(screen.getByText('Time series')).toBeInTheDocument();
  });

  it('should call onChange immediately when resultFormat change', async () => {
    const onChange = jest.fn();
    render(<RawInfluxQLEditor onRunQuery={() => null} onChange={onChange} query={query} />);

    const formatSelect = screen.getByLabelText('Format as');
    expect(formatSelect).toBeInTheDocument();

    await selectOptionInTest(formatSelect, 'Time series');

    expect(onChange).toHaveBeenCalledWith({ ...query, resultFormat: 'time_series' });
  });

  it('should only call onChange on blur when query changes', async () => {
    const onChange = jest.fn();
    render(<RawInfluxQLEditor onRunQuery={() => null} onChange={onChange} query={query} />);

    const queryTextarea = screen.getByLabelText('query');
    expect(queryTextarea).toBeInTheDocument();
    const aliasInput = screen.getByLabelText('Alias by');
    expect(aliasInput).toBeInTheDocument();

    // value before
    expect(queryTextarea).toHaveValue('test query 1');

    userEvent.type(queryTextarea, 'new changes');

    // the field should have a new value, but no onChange yet.
    expect(queryTextarea).toHaveValue('test query 1new changes');
    expect(onChange).toHaveBeenCalledTimes(0);

    aliasInput.focus(); // this should trigger blur on queryTextarea

    expect(onChange).toHaveBeenCalledTimes(1);
    expect(onChange).toHaveBeenCalledWith({ ...query, query: 'test query 1new changes' });
  });
  it('should only call onChange on blur when alias changes', async () => {
    const onChange = jest.fn();
    render(<RawInfluxQLEditor onRunQuery={() => null} onChange={onChange} query={query} />);

    const queryTextarea = screen.getByLabelText('query');
    expect(queryTextarea).toBeInTheDocument();
    const aliasInput = screen.getByLabelText('Alias by');
    expect(aliasInput).toBeInTheDocument();

    // value before
    expect(aliasInput).toHaveValue('alias42');

    userEvent.type(aliasInput, 'new changes');

    // the field should have a new value, but no onChange yet.
    expect(aliasInput).toHaveValue('alias42new changes');
    expect(onChange).toHaveBeenCalledTimes(0);

    queryTextarea.focus(); // this should trigger blur on queryTextarea

    expect(onChange).toHaveBeenCalledTimes(1);
    expect(onChange).toHaveBeenCalledWith({ ...query, alias: 'alias42new changes' });
  });
});
