// SPDX-FileCopyrightText: 2026 Stan Grams <sjg@haxx.space>
//
// SPDX-License-Identifier: GPL-2.0-or-later

// What a phone gets. A page that scrolls sideways is a page with something on
// it nobody will find: the transmit controls spent this whole period laid out
// at x=400 on a 390 px screen, off the side of a tray 354 px wide, reachable
// only by a horizontal scroll with nothing to say it was there.

import assert from "node:assert/strict";
import { chromium } from "playwright-core";
import { startBrowser, startWebFixture } from "./web-fixture.mjs";

/* global document, getComputedStyle */

const PHONES = [430, 390, 360];

const fixture = await startWebFixture({ spectrum: true, tx: true });
const { browser, page, runtimeErrors } = await startBrowser(chromium);

try {
  for (const width of PHONES) {
    await page.setViewportSize({ width, height: 900 });
    await page.goto(fixture.origin, { waitUntil: "domcontentloaded" });
    await page.locator("#content").waitFor({ state: "visible" });
    await page.waitForTimeout(1800);

    const layout = await page.evaluate((viewport) => {
      const box = (element) => element.getBoundingClientRect();
      // Anything laid out past the right edge of the screen.
      const past = [];
      const walk = (element) => {
        const rect = box(element);
        if (rect.width > 0 && rect.right > viewport + 1) {
          past.push(`${element.tagName.toLowerCase()}${element.id ? `#${element.id}` : ""}`);
        }
        for (const child of element.children) walk(child);
      };
      walk(document.getElementById("content"));
      const tx = document.getElementById("tx-power-col");
      return {
        documentScroll: document.documentElement.scrollWidth,
        past: past.slice(0, 6),
        txRight: tx ? Math.round(box(tx).right) : null,
        txVisible: tx ? getComputedStyle(tx).display !== "none" : false,
        rigSelect: Math.round(box(document.getElementById("header-rig-switch-select")).width),
      };
    }, width);

    assert.equal(layout.documentScroll, width,
      `the page scrolls sideways at ${width}px (${layout.documentScroll}px wide)`);
    assert.deepEqual(layout.past, [],
      `laid out past the screen at ${width}px: ${layout.past.join(", ")}`);
    if (layout.txVisible) {
      assert.ok(layout.txRight <= width + 1,
        `the transmit controls end at ${layout.txRight}px on a ${width}px screen`);
    }
    // The rig's name was taking 139px of a 338px bar and pushing everything
    // else into the overflow menu.
    assert.ok(layout.rigSelect <= 112,
      `the rig picker is ${layout.rigSelect}px wide at ${width}px`);

    // The bottom nav keeps its labels — that is what makes it navigation
    // rather than five glyphs — and a label used to overflow its tab and run
    // into the next one: "Bookmarks igital mode".
    //
    // What is asserted is that a label stays inside its own tab and, if it is
    // too long for it, ends in an ellipsis. Not that it fits: how wide a
    // platform draws a word varies by more than ten per cent, so "it fits"
    // passes on the machine it was written on and fails on the next one —
    // which is what a fixed font size did here.
    const nav = await page.evaluate(() => {
      const bar = document.querySelector(".tab-bar-nav");
      return [...bar.querySelectorAll(".tab")]
        .filter((tab) => tab.getBoundingClientRect().width > 0)
        .map((tab) => {
          const label = [...tab.querySelectorAll(".tab-label, .tab-label-short")]
            .find((span) => getComputedStyle(span).display !== "none");
          const style = label ? getComputedStyle(label) : null;
          const labelBox = label?.getBoundingClientRect();
          const tabBox = tab.getBoundingClientRect();
          return {
            text: (label?.textContent ?? "").trim(),
            escapes: labelBox
              ? labelBox.left < tabBox.left - 1 || labelBox.right > tabBox.right + 1
              : false,
            truncates: style?.textOverflow === "ellipsis" && style?.overflow !== "visible",
            empty: !labelBox || labelBox.width < 1,
          };
        });
    });
    assert.ok(nav.length >= 4, `the bottom nav has ${nav.length} destinations at ${width}px`);
    const escaped = nav.filter((tab) => tab.escapes).map((tab) => tab.text);
    assert.deepEqual(escaped, [],
      `labels overflowing their tab at ${width}px: ${escaped.join(", ")}`);
    const untruncatable = nav.filter((tab) => !tab.truncates).map((tab) => tab.text);
    assert.deepEqual(untruncatable, [],
      `labels that would be cut rather than ellipsised at ${width}px: ${untruncatable.join(", ")}`);
    const blank = nav.filter((tab) => tab.empty).map((tab, index) => tab.text || `#${index}`);
    assert.deepEqual(blank, [], `destinations with no label at ${width}px: ${blank.join(", ")}`);
  }

  // A tab whose visible label is shortened for the nav still has to say what
  // it is to anything that reads the page rather than looks at it.
  const named = await page.evaluate(() => {
    const tab = document.querySelector('.tab[data-tab="digital-modes"]');
    const short = tab.querySelector(".tab-label-short");
    return {
      label: tab.getAttribute("aria-label"),
      shortHidden: short?.getAttribute("aria-hidden"),
    };
  });
  assert.equal(named.label, "Digital modes", "the shortened tab lost its full name");
  assert.equal(named.shortHidden, "true", "the short label is read out as well as shown");

  // Hiding the map's filters leaves the bar, and the bar has to still be
  // there to bring them back — it carries the only button that does.
  await page.setViewportSize({ width: 1400, height: 900 });
  await page.goto(`${fixture.origin}/map`, { waitUntil: "domcontentloaded" });
  await page.locator("#aprs-map .leaflet-pane").first().waitFor({ state: "attached" });
  await page.waitForTimeout(1200);
  await page.locator("#map-overlay-toggle-btn").click();
  await page.waitForTimeout(400);
  const collapsed = await page.evaluate(() => {
    const panel = document.querySelector(".map-overlay-panel");
    const style = getComputedStyle(panel);
    const rect = panel.getBoundingClientRect();
    const button = document.getElementById("map-overlay-toggle-btn").getBoundingClientRect();
    return {
      width: Math.round(rect.width),
      height: Math.round(rect.height),
      opacity: Number(style.opacity),
      visibility: style.visibility,
      display: style.display,
      buttonWidth: Math.round(button.width),
    };
  });
  assert.ok(collapsed.width > 0 && collapsed.height > 0,
    `the collapsed bar measures ${collapsed.width}x${collapsed.height}`);
  assert.equal(collapsed.visibility, "visible", "the collapsed bar is not visible");
  assert.notEqual(collapsed.display, "none", "the collapsed bar is display:none");
  assert.equal(collapsed.opacity, 1, `the collapsed bar is at opacity ${collapsed.opacity}`);
  assert.ok(collapsed.buttonWidth > 0, "Show Filters has no size to click");

  assert.deepEqual(runtimeErrors, []);
} finally {
  await browser.close();
  await fixture.close();
}