"use strict";

const test = require("node:test");
const assert = require("node:assert");

// ============================================================
// Minimal browser stub
//
// manga-bookmark.user.js is a browser IIFE. At module scope it touches
// localStorage (loadCache, loadQueue, the key-migration IIFE) and, on its very
// last lines, document. Nothing else runs under test: document.body is left
// UNDEFINED, so the boot block takes its `else` branch and waits for a
// DOMContentLoaded that never fires. buildUI, init, and every network call stay
// dormant with no further stubbing.
// ============================================================

const store = new Map();
globalThis.localStorage = {
  getItem: (k) => (store.has(k) ? store.get(k) : null),
  setItem: (k, v) => store.set(k, String(v)),
  removeItem: (k) => store.delete(k),
};

// location stub. The IIFE reads location.href during boot; set it to a dummy value.
globalThis.location = {
  href: "about:blank",
  hostname: "",
  pathname: "/",
  origin: "",
};

// og: meta tags the adapters read through meta(). Reassigned per test.
let metaTags = {};
// img[alt] elements comix's coverFromPage() scans. Reassigned per test; each
// entry is {alt, src}.
let pageImages = [];
globalThis.document = {
  querySelector(sel) {
    const m = sel.match(/^meta\[property="([^"]+)"\]$/);
    if (!m) return null;
    const v = metaTags[m[1]];
    return v == null ? null : { getAttribute: () => v };
  },
  querySelectorAll(sel) {
    if (sel !== "img[alt]") return [];
    return pageImages.map((img) => ({
      getAttribute: (attr) => img[attr] ?? null,
    }));
  },
  addEventListener() {},
  body: undefined,
};

const {
  stripBuildHash,
  comixSeriesId,
  asura,
  demonic,
  comix,
  anchorsFromHTML,
  statusOf,
} = require("../manga-bookmark.user.js");

// detect() reads only these four properties off location.
function loc(href) {
  const u = new URL(href);
  return { pathname: u.pathname, origin: u.origin, href: u.href, hostname: u.hostname };
}

// ============================================================
// stripBuildHash — Asura's slug suffix rotates on every redeploy, so it must
// not be part of the series identity. Must stay in sync with asuraBuildHash in
// backend/store.go.
// ============================================================

test("stripBuildHash removes a trailing 8-hex suffix", () => {
  assert.equal(stripBuildHash("solo-leveling-059befe1"), "solo-leveling");
});

test("stripBuildHash leaves a slug with no suffix alone", () => {
  assert.equal(stripBuildHash("solo-leveling"), "solo-leveling");
});

test("stripBuildHash ignores suffixes that are not exactly 8 hex chars", () => {
  assert.equal(stripBuildHash("solo-leveling-abc1234"), "solo-leveling-abc1234");
  assert.equal(stripBuildHash("solo-leveling-059befe1a"), "solo-leveling-059befe1a");
  assert.equal(stripBuildHash("solo-leveling-059befeg1"), "solo-leveling-059befeg1");
});

// ============================================================
// Asura adapter
// ============================================================

test("asura.detect reads a series page, stripping the hash from the id only", () => {
  metaTags = { "og:title": "Solo Leveling | Asura Scans", "og:image": "https://cdn.example/x.jpg" };
  const p = asura.detect(loc("https://asurascans.com/comics/solo-leveling-059befe1"));
  assert.equal(p.type, "series");
  assert.equal(p.site, "asura");
  assert.equal(p.seriesId, "solo-leveling");
  // seriesUrl keeps the hash: navigation needs the current one (stale ones 302).
  assert.equal(p.seriesUrl, "https://asurascans.com/comics/solo-leveling-059befe1");
  assert.equal(p.title, "Solo Leveling");
  assert.equal(p.cover, "https://cdn.example/x.jpg");
  assert.equal(p.chapterNum, null);
});

test("asura.detect reads a chapter page including a decimal number", () => {
  metaTags = { "og:title": "Solo Leveling Chapter 12.5 - Read Online | Asura Scans", "og:image": "" };
  const url = "https://asurascans.com/comics/solo-leveling-059befe1/chapter/12.5";
  const p = asura.detect(loc(url));
  assert.equal(p.type, "chapter");
  assert.equal(p.seriesId, "solo-leveling");
  assert.equal(p.chapterNum, 12.5);
  assert.equal(p.chapterLabel, "Chapter 12.5");
  assert.equal(p.chapterUrl, url);
  assert.equal(p.title, "Solo Leveling");
});

test("asura.detect returns other for non-series paths", () => {
  metaTags = {};
  assert.equal(asura.detect(loc("https://asurascans.com/")).type, "other");
  assert.equal(asura.detect(loc("https://asurascans.com/bookmarks")).type, "other");
});

test("asura.latestChapterFromAnchors takes the highest and skips the First Chapter shortcut", () => {
  const best = asura.latestChapterFromAnchors([
    { href: "/comics/solo-leveling-059befe1/chapter/1", text: "Chapter 1" },
    { href: "/comics/solo-leveling-059befe1/chapter/10", text: "Chapter 10" },
    { href: "/comics/solo-leveling-059befe1/chapter/2", text: "Chapter 2" },
    // Points at a chapter but is not a list entry — the text check excludes it.
    { href: "/comics/solo-leveling-059befe1/chapter/1", text: "First Chapter" },
  ]);
  assert.deepEqual(best, { num: 10, label: "Chapter 10" });
});

test("asura.latestChapterFromAnchors returns null when nothing matches", () => {
  assert.equal(asura.latestChapterFromAnchors([{ href: "/about", text: "About" }]), null);
});

// ============================================================
// Demonic adapter
// ============================================================

test("demonic.detect reads a series page", () => {
  metaTags = { "og:title": "The World After The Fall", "og:image": "https://cdn.example/y.jpg" };
  const p = demonic.detect(loc("https://demonicscans.org/manga/the-world-after-the-fall"));
  assert.equal(p.type, "series");
  assert.equal(p.site, "demonic");
  assert.equal(p.seriesId, "the-world-after-the-fall");
  assert.equal(p.title, "The World After The Fall");
});

test("demonic.detect reads a chapter page and strips the suffix from the title", () => {
  metaTags = { "og:title": "The World After The Fall Chapter 3", "og:image": "" };
  const p = demonic.detect(loc("https://demonicscans.org/title/the-world-after-the-fall/chapter/3/1"));
  assert.equal(p.type, "chapter");
  assert.equal(p.chapterNum, 3);
  assert.equal(p.chapterLabel, "Chapter 3");
  assert.equal(p.seriesUrl, "https://demonicscans.org/manga/the-world-after-the-fall");
  assert.equal(p.title, "The World After The Fall");
});

test("demonic percent-encoded slugs decode to the same id on /manga/ and /title/", () => {
  metaTags = {};
  const series = demonic.detect(loc("https://demonicscans.org/manga/i%2527m-the-max-level-newbie"));
  const chapter = demonic.detect(loc("https://demonicscans.org/title/i%2527m-the-max-level-newbie/chapter/3/1"));
  assert.equal(series.seriesId, chapter.seriesId);
  assert.equal(series.seriesId, "i%27m-the-max-level-newbie");
});

test("demonic.latestChapterFromAnchors parses chaptered.php links, including &", () => {
  const best = demonic.latestChapterFromAnchors([
    { href: "chaptered.php?manga=5&chapter=3", text: "Chapter 3" },
    { href: "chaptered.php?manga=5&chapter=12", text: "Chapter 12" },
    { href: "/manga/something", text: "Series" },
  ]);
  assert.deepEqual(best, { num: 12, label: "Chapter 12" });
});

// ============================================================
// comix — the id prefix is the stable identity; the slug tail is a title
// rendering that changes when a series is renamed.
// ============================================================

test("comixSeriesId keeps only the prefix before the first dash", () => {
  assert.equal(comixSeriesId("n8we-dungeons-and-crayons"), "n8we");
  assert.equal(comixSeriesId("20xzd-the-baddest-villainess-is-back"), "20xzd");
});

test("comixSeriesId leaves a bare id untouched", () => {
  assert.equal(comixSeriesId("n8we"), "n8we");
});

test("comix detects a series page", () => {
  metaTags = { "og:title": "Dungeons and Crayons" };
  const p = comix.detect(loc("https://comix.to/title/n8we-dungeons-and-crayons"));
  assert.equal(p.type, "series");
  assert.equal(p.site, "comix");
  assert.equal(p.seriesId, "n8we");
  assert.equal(p.title, "Dungeons and Crayons");
  assert.equal(p.seriesUrl, "https://comix.to/title/n8we-dungeons-and-crayons");
  assert.equal(p.chapterNum, null);
});

test("comix detects a chapter page and strips the Ch. suffix from the title", () => {
  metaTags = { "og:title": "Dungeons and Crayons · Ch.80" };
  const p = comix.detect(
    loc("https://comix.to/title/n8we-dungeons-and-crayons/11139891-chapter-80")
  );
  assert.equal(p.type, "chapter");
  assert.equal(p.seriesId, "n8we");
  assert.equal(p.title, "Dungeons and Crayons");
  assert.equal(p.chapterNum, 80);
  assert.equal(p.chapterLabel, "Chapter 80");
  assert.equal(p.seriesUrl, "https://comix.to/title/n8we-dungeons-and-crayons");
});

test("comix parses decimal chapter numbers", () => {
  metaTags = { "og:title": "Dungeons and Crayons · Ch.80.5" };
  const p = comix.detect(
    loc("https://comix.to/title/n8we-dungeons-and-crayons/11139891-chapter-80.5")
  );
  assert.equal(p.chapterNum, 80.5);
});

test("comix.detect reads the cover from an img whose alt matches the cleaned title", () => {
  metaTags = { "og:title": "Dungeons and Crayons · Ch.80" };
  pageImages = [
    { alt: "Some Other Series", src: "https://cdn.example/other.jpg" },
    { alt: "Dungeons and Crayons", src: "https://cdn.example/cover.jpg" },
  ];
  const p = comix.detect(
    loc("https://comix.to/title/n8we-dungeons-and-crayons/11139891-chapter-80")
  );
  assert.equal(p.cover, "https://cdn.example/cover.jpg");
});

test("comix.detect leaves cover empty when no img alt matches the title", () => {
  metaTags = { "og:title": "Dungeons and Crayons" };
  pageImages = [{ alt: "Some Other Series", src: "https://cdn.example/other.jpg" }];
  const p = comix.detect(loc("https://comix.to/title/n8we-dungeons-and-crayons"));
  assert.equal(p.cover, "");
  pageImages = [];
});

test("comix ignores unrelated paths", () => {
  assert.equal(comix.detect(loc("https://comix.to/browse")).type, "other");
});

test("comix takes the max chapter and ignores other series' links", () => {
  const anchors = anchorsFromHTML(`
    <a href="/title/n8we-dungeons-and-crayons/11123327-chapter-79">Chapter 79</a>
    <a href="/title/n8we-dungeons-and-crayons/11139891-chapter-80">Chapter 80</a>
    <a href="/title/n8we-dungeons-and-crayons/10794753-chapter-78">Chapter 78</a>
    <a href="/title/qqwrm-full-time-awakening/99999999-chapter-999">Chapter 999</a>
  `);
  assert.deepEqual(comix.latestChapterFromAnchors(anchors, "n8we"), {
    num: 80,
    label: "Chapter 80",
  });
});

test("comix latest returns null when no chapter links are present", () => {
  assert.equal(comix.latestChapterFromAnchors(anchorsFromHTML("<a href='/browse'>x</a>"), "n8we"), null);
});

test("asura and demonic ignore the seriesId argument", () => {
  const asuraAnchors = anchorsFromHTML(
    `<a href="/comics/x-aabbccdd/chapter/12"><span>Chapter 12</span></a>`
  );
  assert.deepEqual(asura.latestChapterFromAnchors(asuraAnchors, "ignored"), {
    num: 12,
    label: "Chapter 12",
  });
});

// ============================================================
// Shared helpers
// ============================================================

test("anchorsFromHTML pulls href/text pairs and flattens nested tags", () => {
  const out = anchorsFromHTML('<a href="/a">One</a><a class="x" href="/b"><span>Two</span> more</a>');
  assert.equal(out.length, 2);
  assert.deepEqual(out[0], { href: "/a", text: "One" });
  assert.equal(out[1].href, "/b");
  assert.equal(out[1].text.replace(/\s+/g, " ").trim(), "Two more");
});

test("statusOf defaults a missing status to reading", () => {
  assert.equal(statusOf({}), "reading");
  assert.equal(statusOf({ status: "" }), "reading");
  assert.equal(statusOf({ status: "archived" }), "archived");
  assert.equal(statusOf({ status: "finished" }), "finished");
});