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Covers render in the userscript panel, from a public route (#60) (#69)

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Closes #60.

Spec: #55. Originating bug: #47. Architecture: `docs/adr/0007-backend-hosts-cover-bytes.md`. Neither #47 nor #55 is closed from here.

## What this branch does

The panel now renders Covers from the deployment's own origin, and both userscripts stop having an opinion about where a Cover lives.

**The public route was already in place.** `GET /covers/{address}` landed with #59 (`92eba07`) and is registered on the bare mux, outside `httpmw.Auth` and outside the web UI's Discord session — `backend/main.go:210-214`, handler `backend/internal/api/handlers.go:142-158`. It reads no cookie and no header, answers `404` for an address that was never stored (and for a row whose file has gone missing — recorded-but-gone is not-found, never a fabricated body), refuses anything that is not `^[0-9a-f]{64}$` *before* the value becomes a path, and sets `Cache-Control: public, max-age=604800, immutable`. Those four properties are asserted by `backend/cover_test.go:231-278`. This branch re-verified them rather than re-implementing them; the only backend line it touches is a comment.

**Both userscripts lose cover scraping entirely.** Every adapter's `cover:` field is gone, along with the two helpers that fed them: the manga script's `coverFromPage()` (the `img[alt]` DOM scan comix needed, because comix publishes no `og:image`) and the novel script's `metaName()` plus the now-callerless module-level `meta()`. Nothing under `userscript/` reads `og:image`, `meta[name=image]`, or `img[alt]` any more.

**Nothing sends a cover either.** `delete body.cover` sits in `apiPut` — `manga-bookmark.user.js:486`, `novel-bookmark.user.js:275` — which is the single chokepoint every write passes through (`pushBookmark`, the retry-queue flush, `toggleFavorite`, `toggleArchive`). It operates on the `Object.assign` copy, so the in-memory row keeps the cover it renders with. This matters beyond tidiness: a Reader upgrading from an older copy has `localStorage` rows carrying third-party scraped URLs, and without the strip those would ride back up on the next write. The handler discards the field regardless (`handlers.go:53-59`) — it is permanently inert, not pending removal.

**Failed loads get the designed empty state, not the broken-image glyph.** `onerror: (e) => e.target.replaceWith(el("div", { class: "cover ph" }))` on the cover `<img>` in both card renderers (`manga:1380-1390`, `novel:1134-1144`). The replacement is byte-identical to the existing no-cover branch on the very next line, so it picks up the `.cover.ph` styling already in the panel CSS — no new tokens, no new rule. `el()` routes any `on*` prop through `addEventListener`, so this is a listener, not an inline attribute string, and the swap is a `createElement` + DOM call with no markup parsing anywhere near it. This is the half of #47 that was visible on kagane.

**The deleted scraping's tests went with it**: the two comix cover cases, the `pageImages` and `namedMetas` fixtures, the `img[alt]` and `meta[name=...]` stub branches, the now-dead `querySelectorAll` stub member, and every stale `og:image` fixture and `p.cover` assertion across both suites. The export lists needed no change and that was checked, not assumed — `coverFromPage` and `metaName` were module-private on `origin/main` and no cover symbol ever appeared in `module.exports`.

Docs that described the deleted behaviour were corrected in the same breath, because leaving them would instruct the next agent to put the scraping back: `userscript/AGENTS.md` (adapter contract + the per-site notes for comix, kagane and novelfull), the README's adapter reference, and the userscript testing skill's stub table.

## Verification

- `go test -count=1 ./...` — green across all nine packages (`backend` 29.8s, `latest`, `store`, `session`, `token`, `userscript`, `web`).
- `node --check` clean on both userscripts; `node --test` on both logic suites — 46 tests, 46 pass.
- `gofmt -l` clean; `go build ./...` clean.
- The `onerror` swap is DOM behaviour and deliberately has no coverage in the Node harness — that harness stubs a browser precisely so it never needs a DOM, and #60 says not to invent coverage for it. It was instead exercised for real: the `el()` helper and the exact render expression were loaded into a headless Chromium with a deliberately unloadable `src`, and the resulting DOM was `<div class="cover ph"></div>`. Ad hoc, not committed.
- **Not done, needs you:** the on-device criterion — a comix Series bookmarked mid-chapter showing its Cover in the panel. That needs a real install against the deployment and is the one box left unticked on #60.

## Reviewed

Both `/code-review` axes ran against `cc0fa92`. Spec found no missed requirement and no scope creep; standards found the diff clean on the four areas it scrutinised (the `delete body.cover` placement, the `onerror` handler's DOM safety, comment quality, dead-code removal). Their combined findings — the dead `querySelectorAll` stub, the stale README and skill text, and the handler comment whose premise this change invalidates — are fixed in `8b58019`.

## Out of scope, deliberately

The kagane-specific cover proxy still exists and still carries its session gate (#63 deletes it). The poll's blank-Cover fill (#61) and browser-backed Sites joining the pipeline (#62) are untouched.

Reviewed-on: #69
Co-authored-by: Sulthan Zaki <sultankiki05@gmail.com>
Co-committed-by: Sulthan Zaki <sultankiki05@gmail.com>
This commit was merged in pull request #69.
This commit is contained in:
Sulthan Zaki
2026-08-10 08:52:57 +07:00
committed by sulthan
parent 92eba07da7
commit e2c054e7ce
8 changed files with 63 additions and 128 deletions
Download Patch File Download Diff File Expand all files Collapse all files
userscript/test/logic.test.js
+6 -44
View File
@@ -34,9 +34,6 @@ let metaTags = {};
// document.title. comix's SPA rewrites this on client routing but never
// og:title, so the comix adapter reads it instead. Reassigned per test.
let docTitle = "";
// 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\[property="([^"]+)"\]$/);
@@ -44,12 +41,6 @@ globalThis.document = {
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() {},
get title() {
return docTitle;
@@ -100,7 +91,7 @@ test("stripBuildHash ignores suffixes that are not exactly 8 hex chars", () => {
// ============================================================
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" };
metaTags = { "og:title": "Solo Leveling | Asura Scans" };
const p = asura.detect(loc("https://asurascans.com/comics/solo-leveling-059befe1"));
assert.equal(p.type, "series");
assert.equal(p.site, "asura");
@@ -108,12 +99,11 @@ test("asura.detect reads a series page, stripping the hash from the id only", ()
// 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": "" };
metaTags = { "og:title": "Solo Leveling Chapter 12.5 - Read Online | Asura Scans" };
const url = "https://asurascans.com/comics/solo-leveling-059befe1/chapter/12.5";
const p = asura.detect(loc(url));
assert.equal(p.type, "chapter");
@@ -150,7 +140,7 @@ test("asura.latestChapterFromAnchors returns null when nothing matches", () => {
// ============================================================
test("demonic.detect reads a series page", () => {
metaTags = { "og:title": "The World After The Fall", "og:image": "https://cdn.example/y.jpg" };
metaTags = { "og:title": "The World After The Fall" };
const p = demonic.detect(loc("https://demonicscans.org/manga/the-world-after-the-fall"));
assert.equal(p.type, "series");
assert.equal(p.site, "demonic");
@@ -159,7 +149,7 @@ test("demonic.detect reads a series page", () => {
});
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": "" };
metaTags = { "og:title": "The World After The Fall Chapter 3" };
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);
@@ -247,26 +237,6 @@ test("comix parses decimal chapter numbers", () => {
assert.equal(p.chapterNum, 80.5);
});
test("comix.detect reads the cover from an img whose alt matches the cleaned title", () => {
metaTags = { "og:title": COMIX_STALE_HOME };
docTitle = "Dungeons and Crayons";
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"));
assert.equal(p.cover, "https://cdn.example/cover.jpg");
});
test("comix.detect leaves cover empty when no img alt matches the title", () => {
metaTags = {};
docTitle = "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");
});
@@ -308,23 +278,18 @@ const KAGANE_SERIES = "019f84bc-9ba0-7ed9-86f5-8b905ec7c28b";
const KAGANE_BOOK = "019fa2e0-6dbd-73ca-b40b-fe06ab75eb0e";
test("kagane detects a series page", () => {
metaTags = {
"og:title": "Infinite Decryption: The Strongest Level 0",
"og:image": "https://kagane.to/api/v2/image/abc/compressed",
};
metaTags = { "og:title": "Infinite Decryption: The Strongest Level 0" };
const p = kagane.detect(loc("https://kagane.to/series/" + KAGANE_SERIES));
assert.equal(p.type, "series");
assert.equal(p.site, "kagane");
assert.equal(p.seriesId, KAGANE_SERIES);
assert.equal(p.title, "Infinite Decryption: The Strongest Level 0");
assert.equal(p.cover, "https://kagane.to/api/v2/image/abc/compressed");
assert.equal(p.seriesUrl, "https://kagane.to/series/" + KAGANE_SERIES);
});
test("kagane reads the chapter number out of og:title", () => {
metaTags = {
"og:title": "Infinite Decryption: The Strongest Level 0 - Chapter 41 - Episode 41",
"og:image": "https://kagane.to/api/v2/image/abc/compressed",
};
const p = kagane.detect(
loc("https://kagane.to/series/" + KAGANE_SERIES + "/reader/" + KAGANE_BOOK)
@@ -341,10 +306,7 @@ test("kagane reads the chapter number out of og:title", () => {
// no episode name, because the book carries volume_no and an empty title.
// Captured live 2026-08-08 from SP Baby.
test("kagane reads through a Volume-numbered chapter suffix", () => {
metaTags = {
"og:title": "SP Baby - Volume 1 Chapter 1",
"og:image": "https://kagane.to/api/v2/image/abc/compressed",
};
metaTags = { "og:title": "SP Baby - Volume 1 Chapter 1" };
const p = kagane.detect(
loc("https://kagane.to/series/" + KAGANE_SERIES + "/reader/" + KAGANE_BOOK)
);