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fix: upload retry reuses the created manga instead of duplicating it

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After a partial upload failure (manga created, a chapter failed), re-submitting
re-ran createManga and spawned a duplicate manga. Track the created manga id:
a retry skips creation, re-sends only the not-yet-done chapters, disables the
now-saved title, relabels the button "Retry failed chapters", and shows a note.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-07-11 15:20:03 +02:00
parent a47b6895c2
commit 3b783c1d9b
3 changed files with 162 additions and 32 deletions
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104
frontend/e2e/upload-retry.spec.ts Normal file
View File

@@ -0,0 +1,104 @@
import { test, expect, type Page } from './fixtures';
// A partial upload failure (manga created, a chapter fails) must NOT create a
// duplicate manga when the user retries — the second submit reuses the created
// manga and only re-sends the failed chapter.
const userFixture = {
id: 'u1',
username: 'uploader',
created_at: '2026-01-01T00:00:00Z',
is_admin: false
};
const manga = {
id: 'm9',
title: 'Retry Saga',
status: 'ongoing',
description: null,
authors: [],
alt_titles: [],
genres: [],
cover_image_path: null,
created_at: '2026-01-01T00:00:00Z',
updated_at: '2026-01-01T00:00:00Z'
};
async function stub(page: Page, counters: { mangaPosts: number; chapterPosts: number }) {
await page.route('**/api/v1/auth/config', (r) =>
r.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify({ self_register_enabled: true, private_mode: false }) })
);
await page.route('**/api/v1/auth/me', (r) =>
r.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify({ user: userFixture }) })
);
await page.route('**/api/v1/auth/me/preferences', (r) =>
r.fulfill({ status: 200, contentType: 'application/json', body: '{}' })
);
await page.route('**/api/v1/genres', (r) => r.fulfill({ status: 200, contentType: 'application/json', body: '[]' }));
await page.route('**/api/v1/mangas', (r) => {
if (r.request().method() === 'POST') {
counters.mangaPosts += 1;
return r.fulfill({ status: 201, contentType: 'application/json', body: JSON.stringify(manga) });
}
return r.fallback();
});
// Chapter POST: fail the first attempt, succeed on the retry.
await page.route('**/api/v1/mangas/m9/chapters', (r) => {
if (r.request().method() === 'POST') {
counters.chapterPosts += 1;
if (counters.chapterPosts === 1) {
return r.fulfill({
status: 500,
contentType: 'application/json',
body: JSON.stringify({ error: { code: 'internal_error', message: 'boom' } })
});
}
return r.fulfill({
status: 201,
contentType: 'application/json',
body: JSON.stringify({ id: 'c1', manga_id: 'm9', number: 1, title: null, page_count: 1, created_at: '2026-01-01T00:00:00Z' })
});
}
return r.fallback();
});
// Post-success destination + its data.
await page.route('**/api/v1/mangas/m9', (r) =>
r.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify(manga) })
);
await page.route('**/api/v1/mangas/m9/chapters?*', (r) =>
r.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify({ items: [], page: { limit: 200, offset: 0, total: 0 } }) })
);
await page.route('**/api/v1/me/bookmarks*', (r) =>
r.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify({ items: [], page: { limit: 50, offset: 0, total: 0 } }) })
);
await page.route('**/api/v1/me/read-progress/m9', (r) =>
r.fulfill({ status: 404, contentType: 'application/json', body: JSON.stringify({ error: { code: 'not_found', message: 'x' } }) })
);
}
test('retrying a partially-failed upload does not create a duplicate manga', async ({ page }) => {
const counters = { mangaPosts: 0, chapterPosts: 0 };
await stub(page, counters);
await page.goto('/upload');
await page.getByTestId('manga-title').fill('Retry Saga');
await page.getByTestId('add-chapter').click();
const png = Buffer.from([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]);
await page
.getByTestId('staged-chapter-pages-input')
.setInputFiles([{ name: 'p.png', mimeType: 'image/png', buffer: png }]);
// First submit: manga created, chapter fails → the retry note + relabeled button.
await page.getByTestId('manga-submit').click();
await expect(page.getByTestId('manga-success')).toBeVisible();
await expect(page.getByTestId('manga-created-note')).toBeVisible();
await expect(page.getByTestId('manga-submit')).toHaveText('Retry failed chapters');
expect(counters.mangaPosts).toBe(1);
// Retry: no second manga POST, chapter re-sent, navigate to the manga.
await page.getByTestId('manga-submit').click();
await expect(page).toHaveURL(/\/manga\/m9$/);
expect(counters.mangaPosts).toBe(1);
expect(counters.chapterPosts).toBe(2);
});

2
frontend/package.json
View File

@@ -1,6 +1,6 @@
{
"name": "mangalord-frontend",
"version": "0.128.0",
"version": "0.128.1",
"private": true,
"type": "module",
"scripts": {

54
frontend/src/routes/upload/+page.svelte
View File

@@ -44,11 +44,18 @@
let mangaError = $state<string | null>(null);
let success = $state<string | null>(null);
// Set once the manga row is created. A retry after a partial chapter
// failure reuses this id instead of creating a duplicate manga, and the
// form switches into "finish uploading chapters" mode.
let createdMangaId = $state<string | null>(null);
let createdMangaTitle = $state<string | null>(null);
const mangaCreated = $derived(createdMangaId != null);
// Warn before navigating away with an in-progress upload. Suppressed while
// submitting and after a successful save (which redirects).
// submitting (the post-save redirect). After a partial failure the created
// manga's failed chapters are still unsaved staged work, so we keep warning.
guardUnsavedChanges(
() =>
!success &&
!submitting &&
(mangaTitle.trim() !== '' ||
mangaDescription.trim() !== '' ||
@@ -148,9 +155,14 @@
submitting = true;
mangaError = null;
success = null;
let manga;
// Create the manga only once. On a retry after a partial failure the
// row already exists (createdMangaId set), so we skip creation and go
// straight to re-uploading the not-yet-done chapters — creating it again
// would spawn a duplicate manga.
if (createdMangaId == null) {
try {
manga = await createManga(
const manga = await createManga(
{
title: mangaTitle.trim(),
status: mangaStatus,
@@ -161,6 +173,8 @@
},
coverFile ?? undefined
);
createdMangaId = manga.id;
createdMangaTitle = manga.title;
} catch (e) {
if (e instanceof ApiError && e.status === 401) {
await goto('/login?next=/upload');
@@ -170,17 +184,17 @@
submitting = false;
return;
}
}
// Manga is created; ship chapters one at a time and surface
// per-row status. Failures don't roll back the manga — the
// user can retry just the failed chapters from the manga
// page's Upload-chapter button.
// Ship the outstanding chapters one at a time, surfacing per-row status.
// Already-succeeded rows are skipped so a retry only re-sends failures.
for (const c of stagedChapters) {
if (c.status === 'done') continue;
c.status = 'uploading';
c.error = null;
try {
await createChapter(
manga.id,
createdMangaId,
{ number: c.number, title: c.title.trim() || null },
c.pages.map((p) => p.file)
);
@@ -193,12 +207,11 @@
const failed = stagedChapters.filter((c) => c.status === 'failed');
if (failed.length === 0) {
// All-good — land the user on the manga page where they
// can confirm and continue uploading.
await goto(`/manga/${manga.id}`);
// All-good — land the user on the manga page.
await goto(`/manga/${createdMangaId}`);
return;
}
success = `"${manga.title}" was created, but ${failed.length} of ${stagedChapters.length} chapters failed. Fix them and retry from the manga page.`;
success = `"${createdMangaTitle}" was created, but ${failed.length} of ${stagedChapters.length} chapters still failed. Fix them and retry — the manga won't be duplicated.`;
submitting = false;
}
</script>
@@ -215,6 +228,12 @@
<form onsubmit={submit} action="javascript:void(0)" data-testid="manga-form">
<section class="card">
<h2>Manga details</h2>
{#if mangaCreated}
<p class="status" data-testid="manga-created-note">
Manga created. Its details are saved — fix any failed chapters
below and submit again to finish; the manga won't be duplicated.
</p>
{/if}
<label class="form-field">
<span>Title <span aria-hidden="true">*</span></span>
<input
@@ -222,6 +241,7 @@
bind:value={mangaTitle}
required
maxlength="200"
disabled={mangaCreated}
data-testid="manga-title"
/>
</label>
@@ -435,7 +455,13 @@
disabled={!canSubmit}
data-testid="manga-submit"
>
{submitting ? 'Submitting…' : 'Create manga'}
{#if submitting}
Submitting…
{:else if mangaCreated}
Retry failed chapters
{:else}
Create manga
{/if}
</button>
{#if success}
<p class="success" data-testid="manga-success">{success}</p>