/**
 * Comments stay where they were put, across zoom, scroll and timeframe.
 *
 * A comment is stored as a drawing but must never behave like a level, so the
 * last test here guards the invariant that matters most: a note on a chart can
 * never end up in a confluence cluster or fire a push notification.
 */
import { test } from 'node:test';
import assert from 'node:assert/strict';
import {
  withChart, chartBox, at, armTool, selectTimeframe, assertNoPageErrors,
} from './helpers.mjs';

const TEXT = 'e2e placement check';

/** Place a comment at a point on the chart. */
async function placeComment(page, box, fx, fy, { floating = false } = {}) {
  await armTool(page, 'Comment');
  await page.fill('textarea[aria-label="Comment text"]', TEXT);
  if (floating) {
    await page.evaluate(() => {
      const body = [...document.querySelectorAll('.tool-body')].find(b => b.querySelector('textarea'));
      const box_ = body.querySelector('input[type=checkbox]');
      if (!box_.checked) box_.click();
    });
    await page.waitForTimeout(300);
  }
  const point = at(box, fx, fy);
  await page.mouse.move(point.x, point.y);
  await page.mouse.down(); await page.mouse.up();
  await page.waitForTimeout(1800);
}

const commentNode = page => page.evaluate(text => {
  const node = [...document.querySelectorAll('.chart-comment')].find(n => n.title === text);
  if (!node) return null;
  return {
    left: Math.round(node.getBoundingClientRect().left),
    collapsed: node.classList.contains('collapsed'),
    parked: node.classList.contains('off-left') || node.classList.contains('off-right'),
  };
}, TEXT);

test('a pinned comment keeps its bar across timeframes', { timeout: 300000 }, async () => {
  await withChart(async page => {
    const box = await chartBox(page);
    await selectTimeframe(page, '30m');
    await placeComment(page, box, 0.55, 0.40);

    const anchor = await page.evaluate(t => {
      const c = window.__chart.comments.find(x => x.note === t);
      return c ? c.anchor_t : null;
    }, TEXT);
    assert.ok(anchor, 'the comment was not created');

    // The bug: timeToCoordinate answers only for exact data points, so a 30m
    // bucket returned null on 15m and null was read as "off the left edge".
    for (const tf of ['15m', '1h', '30m']) {
      await selectTimeframe(page, tf);
      const node = await commentNode(page);
      assert.ok(node, `the comment vanished on ${tf}`);
      assert.equal(node.parked, false, `the comment was edge-parked on ${tf} despite being in view`);
    }
    assertNoPageErrors(page, assert);
  });
});

test('clicking a comment collapses it', { timeout: 180000 }, async () => {
  await withChart(async page => {
    const box = await chartBox(page);
    await placeComment(page, box, 0.5, 0.35);
    assert.equal((await commentNode(page)).collapsed, false);
    // By title, not by class: the dev store is shared, so other people's
    // comments are on the chart too and `.chart-comment` matches them first.
    await page.click(`.chart-comment[title="${TEXT}"]`);
    await page.waitForTimeout(1200);
    assert.equal((await commentNode(page)).collapsed, true, 'clicking did not collapse it');
    assertNoPageErrors(page, assert);
  });
});

test('a floating comment holds its position while the chart scrolls', { timeout: 180000 }, async () => {
  await withChart(async page => {
    const box = await chartBox(page);
    await placeComment(page, box, 0.4, 0.3, { floating: true });
    const before = await commentNode(page);
    assert.ok(before, 'the floating comment was not created');
    await page.evaluate(() => window.__chart.chart.timeScale().scrollToPosition(-300, false));
    await page.waitForTimeout(1200);
    const after = await commentNode(page);
    assert.equal(after.left, before.left, 'a floating comment moved with the chart');
    assertNoPageErrors(page, assert);
  });
});

test('a comment is never a level', { timeout: 180000 }, async () => {
  await withChart(async page => {
    const box = await chartBox(page);
    await placeComment(page, box, 0.5, 0.5);
    // Levels cluster and alert. A comment reaching that list would push a
    // phone notification about a piece of text.
    const leaked = await page.evaluate(t => {
      const note = window.__chart.comments.find(x => x.note === t);
      if (!note) return 'comment missing';
      return window.__chart.levels.some(level => level.id === note.id);
    }, TEXT);
    assert.equal(leaked, false, 'a comment appeared in the level list');
    assertNoPageErrors(page, assert);
  });
});