import assert from "node:assert/strict";
import { describe, it } from "node:test";

import {
  DOWNLOAD_ARTIFACTS,
  DOWNLOAD_LINKS,
  FAQ_IDS,
  FEATURE_VARIANTS,
  NAV_LINK_KEYS,
  NAV_HREFS,
  PRICING_TIER_IDS,
  RECOMMENDED_PRICING_TIER,
  REQUIRED_SECTION_IDS,
  SITE_LINKS,
  UPDATE_FEED_BASE,
} from "./data/siteContent";
import {
  SCREENSHOT_SRC,
  getEffectsScreenshotDisplaySize,
} from "./data/siteAssets";
import { MESSAGES, inferLocaleFromLanguages } from "./i18n/messages";
import {
  detectCpuArch,
  detectOs,
  resolveDownloadHref,
  resolvePlatformDownloadHref,
} from "./lib/detectOs";

describe("siteContent", () => {
  it("exposes all required section anchor ids", () => {
    for (const id of REQUIRED_SECTION_IDS) {
      const inNav = NAV_LINK_KEYS.some((key) => NAV_HREFS[key] === `#${id}`);
      assert.equal(inNav || id.length > 0, true, `missing section #${id}`);
    }
  });

  it("defines four feature variants", () => {
    assert.deepEqual(FEATURE_VARIANTS, [
      "editor",
      "control",
      "presentation",
      "atmosphere",
    ]);
  });

  it("defines three pricing tiers with one recommended", () => {
    assert.equal(PRICING_TIER_IDS.length, 3);
    assert.equal(RECOMMENDED_PRICING_TIER, "master");
  });

  it("includes five FAQ entries", () => {
    assert.equal(FAQ_IDS.length, 5);
  });

  it("points download buttons to update feed artifacts", () => {
    assert.equal(UPDATE_FEED_BASE, "https://updates.mailib.ru/");
    assert.equal(
      DOWNLOAD_LINKS.windows,
      `${UPDATE_FEED_BASE}${DOWNLOAD_ARTIFACTS.windows}`,
    );
    assert.equal(
      DOWNLOAD_LINKS.macos.arm64,
      `${UPDATE_FEED_BASE}${DOWNLOAD_ARTIFACTS.macos.arm64}`,
    );
    assert.equal(
      DOWNLOAD_LINKS.linux.x64,
      `${UPDATE_FEED_BASE}${DOWNLOAD_ARTIFACTS.linux.x64}`,
    );
  });

  it("wires download anchor and external buy link", () => {
    assert.equal(SITE_LINKS.download, "#platforms");
    assert.equal(SITE_LINKS.buy, "https://donate.stream/ttrpgplayer");
  });

  it("maps each feature variant to a screenshot asset", () => {
    for (const variant of FEATURE_VARIANTS) {
      assert.match(SCREENSHOT_SRC[variant], /^\/images\/screenshot-.+\.png$/u);
    }
    assert.equal(SCREENSHOT_SRC.atmosphere, "/images/screenshot-effects.png");
  });

  it("shows effects screenshot at 70% of intrinsic pixel size", () => {
    const size = getEffectsScreenshotDisplaySize();
    assert.equal(size.width, 206);
    assert.equal(size.height, 220);
  });
});

describe("i18n messages", () => {
  it("has ru and en locales without DND key mentions", () => {
    for (const locale of ["ru", "en"] as const) {
      const json = JSON.stringify(MESSAGES[locale]);
      assert.doesNotMatch(json, /DND-/u);
      assert.doesNotMatch(json, /\.dnd\.zip/u);
      assert.equal(Object.keys(MESSAGES[locale].faq.items).length, 5);
    }
  });

  it("documents download and buy labels in both locales", () => {
    assert.equal(MESSAGES.ru.cta.download, "Скачать");
    assert.equal(MESSAGES.en.cta.download, "Download");
    assert.equal(MESSAGES.ru.cta.buy, "Купить");
    assert.equal(MESSAGES.en.cta.buy, "Buy");
  });
});

describe("inferLocaleFromLanguages", () => {
  it("uses ru only for Russian browser languages", () => {
    assert.equal(inferLocaleFromLanguages(["ru-RU"]), "ru");
    assert.equal(inferLocaleFromLanguages(["ru"]), "ru");
    assert.equal(inferLocaleFromLanguages(["ru-BY", "en-US"]), "ru");
  });

  it("defaults to en for non-Russian browser languages", () => {
    assert.equal(inferLocaleFromLanguages(["en-US"]), "en");
    assert.equal(inferLocaleFromLanguages(["de-DE"]), "en");
    assert.equal(inferLocaleFromLanguages(["uk-UA"]), "en");
    assert.equal(inferLocaleFromLanguages([]), "en");
  });
});

describe("detectOs", () => {
  it("detects Windows from user agent", () => {
    assert.equal(detectOs("Mozilla/5.0 (Windows NT 10.0)"), "windows");
  });

  it("detects macOS from user agent", () => {
    assert.equal(detectOs("Mozilla/5.0 (Macintosh; Intel Mac OS X)"), "macos");
  });

  it("detects Linux from user agent", () => {
    assert.equal(detectOs("Mozilla/5.0 (X11; Linux x86_64)"), "linux");
  });

  it("detects Linux arm64 from user agent", () => {
    assert.equal(detectCpuArch("Mozilla/5.0 (X11; Linux aarch64)"), "arm64");
  });

  it("resolves download href by OS", () => {
    const hints = { userAgent: "Mozilla/5.0 (Windows NT 10.0)" };
    assert.equal(
      resolveDownloadHref("windows", DOWNLOAD_LINKS, hints),
      DOWNLOAD_LINKS.windows,
    );
    assert.equal(
      resolveDownloadHref("macos", DOWNLOAD_LINKS, {
        userAgent: "Mozilla/5.0 (Macintosh; Intel Mac OS X)",
        maxTouchPoints: 0,
      }),
      DOWNLOAD_LINKS.macos.x64,
    );
    assert.equal(
      resolveDownloadHref("linux", DOWNLOAD_LINKS, {
        userAgent: "Mozilla/5.0 (X11; Linux aarch64)",
      }),
      DOWNLOAD_LINKS.linux.arm64,
    );
    assert.equal(
      resolveDownloadHref("unknown", DOWNLOAD_LINKS, hints),
      DOWNLOAD_LINKS.windows,
    );
  });

  it("resolves per-platform card href", () => {
    assert.equal(
      resolvePlatformDownloadHref("windows", DOWNLOAD_LINKS, {
        userAgent: "Mozilla/5.0 (Macintosh; Intel Mac OS X)",
      }),
      DOWNLOAD_LINKS.windows,
    );
    assert.equal(
      resolvePlatformDownloadHref("macos", DOWNLOAD_LINKS, {
        userAgent: "Mozilla/5.0 (Windows NT 10.0)",
      }),
      DOWNLOAD_LINKS.macos.arm64,
    );
    assert.equal(
      resolvePlatformDownloadHref("linux", DOWNLOAD_LINKS, {
        userAgent: "Mozilla/5.0 (X11; Linux x86_64)",
      }),
      DOWNLOAD_LINKS.linux.x64,
    );
  });
});