fix(library): one row per frame of a drive root, however a build spelled its id

This commit is contained in:
2026-10-13 14:57:49 +07:00
parent c506cdf645
commit a3171dd40e
3 changed files with 579 additions and 40 deletions
+218
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@@ -0,0 +1,218 @@
// TEMP repro: UPDATE on a folder row must not write the frames it already holds
// a second time. Root handle is named `\` — a Windows drive root, which is what
// the reader right-clicked.
import { spawn } from 'node:child_process';
import { createServer } from 'node:http';
import { readFile } from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
const FRONTEND = fileURLToPath(new URL('..', import.meta.url));
const SAMPLE_FILE = process.env.SAMPLE_FILE ?? path.resolve(FRONTEND, '../sample/_3279791-develop-check.jpg');
const APP_PORT = Number(process.env.APP_PORT ?? 5920);
const SAMPLE_PORT = Number(process.env.SAMPLE_PORT ?? 5921);
const ROOT = '\\';
const ROOT_KEY = process.env.ROOT_KEY ?? ROOT;
const names = ['a1.jpg', 'a2.jpg', 'a3.jpg', 'a4.jpg'];
const inner = ['b1.jpg', 'b2.jpg'];
let fails = 0;
const step = (what, ok, detail = '') => {
if (!ok) fails++;
console.log(`${ok ? 'ok ' : 'FAIL'} ${what}${detail ? ` — ${detail}` : ''}`);
};
const playwright = await import(process.env.PLAYWRIGHT_CORE ?? 'playwright-core').catch(() => null);
if (!playwright) {
console.log('SKIP playwright-core is not installed');
process.exit(0);
}
const jpg = await readFile(SAMPLE_FILE);
const all = [...names, ...inner];
const sampleServer = createServer((req, res) => {
const name = path.basename(decodeURIComponent((req.url ?? '/').split('?')[0]));
if (!all.includes(name)) {
res.writeHead(404).end();
return;
}
res.writeHead(200, { 'Content-Type': 'image/jpeg', 'Content-Length': jpg.length, 'Access-Control-Allow-Origin': '*' });
res.end(jpg);
});
await new Promise((resolve) => sampleServer.listen(SAMPLE_PORT, '127.0.0.1', resolve));
const app = process.env.BASE_URL
? null
: spawn('npx', ['vite', 'preview', '--port', String(APP_PORT), '--strictPort', '--host', '127.0.0.1'], {
cwd: FRONTEND,
stdio: 'ignore',
detached: true,
});
const stopApp = () => {
if (!app?.pid) return;
try {
process.kill(-app.pid, 'SIGTERM');
} catch {}
};
const base = process.env.BASE_URL ?? `http://127.0.0.1:${APP_PORT}`;
let up = !app;
for (let i = 0; i < 60 && !up; i++) {
up = await fetch(`${base}/library`).then((r) => r.ok).catch(() => false);
if (!up) await new Promise((r) => setTimeout(r, 500));
}
if (!up) {
stopApp();
sampleServer.close();
console.log(`FAIL no preview on ${base}`);
process.exit(1);
}
const browser = await playwright.chromium.launch({
executablePath: process.env.CHROME || undefined,
args: ['--no-sandbox', '--enable-unsafe-swiftshader'],
});
const context = await browser.newContext({ viewport: { width: 1500, height: 950 } });
await context.route('**/api/**', (route) => {
const url = route.request().url();
const json = (body) => route.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify(body) });
if (url.includes('/auth/me')) return json({ user: { id: 1, email: 'check@example.com', name: 'check', verified: true, pro: true, admin: false } });
if (url.includes('/photos')) return json({ photos: [] });
if (url.includes('/place')) return json({ place: 'Hanoi' });
if (url.includes('/ratings')) return json({ ratings: [] });
if (url.includes('/highlights')) return json({ highlights: { day: [], week: [], ever: [] } });
if (url.includes('/recipes')) return json({ recipes: [] });
return json({});
});
await context.addInitScript(
({ origin, names, inner, root }) => {
const fileHandle = (name) => {
const handle = { kind: 'file', name, __fake: true };
Object.defineProperty(handle, 'getFile', {
value: async () => new File([await (await fetch(`${origin}/${name}`)).arrayBuffer()], name, { type: 'image/jpeg', lastModified: Date.UTC(2024, 3, 2, 12) }),
});
return handle;
};
const valuesOf = (node, label) => {
const it = [];
for (const f of node.files) it.push(fileHandle(f));
for (const d of node.dirs ?? []) it.push(dirHandle(d.label, d, label));
return it[Symbol.iterator]();
};
const dirHandle = (label, node, parent = '') => {
const handle = { kind: 'directory', name: label, __fake: true };
const self = () => dirHandle(label, node, parent);
Object.defineProperties(handle, {
values: { value: () => valuesOf(node, label) },
queryPermission: { value: async () => 'granted' },
requestPermission: { value: async () => 'granted' },
getDirectoryHandle: {
value: async (name) => {
const d = (node.dirs ?? []).find((x) => x.label === name);
if (!d) throw new Error(`no folder ${name}`);
return dirHandle(name, d, label);
},
},
getFileHandle: {
value: async (name) => {
if (!node.files.includes(name)) throw new Error(`no frame ${name}`);
return fileHandle(name);
},
},
__self: { value: self },
});
return handle;
};
const rootNode = { files: names, dirs: [{ label: 'Early', files: inner }] };
const rootHandle = () => dirHandle(root, rootNode);
window.showDirectoryPicker = async () => rootHandle();
const revive = (row) => {
if (row?.handle?.__fake && !Object.getOwnPropertyDescriptor(row.handle, 'getFile')) {
row.handle = row.handle.kind === 'directory' ? rootHandle() : fileHandle(row.handle.name);
}
return row;
};
for (const method of ['get', 'getAll']) {
const original = IDBObjectStore.prototype[method];
IDBObjectStore.prototype[method] = function (...args) {
const request = original.apply(this, args);
const descriptor = Object.getOwnPropertyDescriptor(IDBRequest.prototype, 'result');
Object.defineProperty(request, 'result', {
configurable: true,
get() {
const value = descriptor.get.call(this);
return Array.isArray(value) ? value.map(revive) : revive(value);
},
});
return request;
};
}
},
{ origin: `http://127.0.0.1:${SAMPLE_PORT}`, names, inner, root: ROOT }
);
const page = await context.newPage();
const errors = [];
page.on('pageerror', (e) => errors.push(String(e.message).slice(0, 200)));
const rows = () =>
page.evaluate(
(db) =>
new Promise((resolve) => {
const open = indexedDB.open(db);
open.onsuccess = () => {
const tx = open.result.transaction('photos', 'readonly');
const req = tx.objectStore('photos').getAll();
req.onsuccess = () => {
const photos = req.result.map((r) => ({ id: r.id, folder: r.folder, dir: r.dir, name: r.name, size: r.size, mtime: r.mtime }));
const t = open.result.transaction('thumbs', 'readonly');
const tr = t.objectStore('thumbs').getAll();
tr.onsuccess = () =>
resolve({ photos, thumbs: tr.result.map((x) => x.id), stores: [...open.result.objectStoreNames] });
};
};
open.onerror = () => resolve({ photos: [], thumbs: [], stores: [] });
}),
'recipescam-library'
);
await page.goto(`${base}/library`);
await page.click('[data-key="lib-add"]');
await page.waitForSelector('[data-key^="lib-node-"]', { timeout: 60_000 });
await page
.waitForFunction((n) => (document.querySelector('[data-key="lib-count"]')?.textContent ?? '').includes(String(n)), all.length, { timeout: 240_000, polling: 250 })
.catch(() => {});
const first = await rows();
step('the drive is read once', first.photos.length === all.length, `${first.photos.length} rows for ${all.length} frames`);
step('every frame has one row', new Set(first.photos.map((p) => p.id)).size === first.photos.length, first.photos.map((p) => p.id).join(' | '));
// The reader right-clicks the drive row and asks for UPDATE.
await page.locator('[data-key^="lib-node-"]').first().click({ button: 'right' });
await page.waitForSelector('[data-key^="lib-update-"]', { timeout: 20_000 });
await page.click('[data-key^="lib-update-"]');
await page.waitForFunction(() => !document.querySelector('.lib-scan-live, [data-key="lib-scan-stop"]'), { timeout: 240_000, polling: 250 }).catch(() => {});
await page.waitForTimeout(4000);
const after = await rows();
const byId = new Map();
for (const p of after.photos) byId.set(p.id, (byId.get(p.id) ?? 0) + 1);
const dupIds = [...byId].filter(([, n]) => n > 1);
const byName = new Map();
for (const p of after.photos) byName.set(p.name, (byName.get(p.name) ?? 0) + 1);
const dupNames = [...byName].filter(([, n]) => n > 1);
step('UPDATE adds nothing', after.photos.length === all.length, `${after.photos.length} rows for ${all.length} frames`);
step('no frame carries two rows', dupIds.length === 0, dupIds.map(([id, n]) => `${id}×${n}`).join(' | '));
step('no frame carries two thumbnails', dupNames.length === 0 && after.thumbs.length === all.length, `rows=${after.photos.length} thumbs=${after.thumbs.length} | ${dupNames.map(([k, n]) => `${k}×${n}`).join(' ')}`);
const tiles = await page.evaluate(() => document.querySelectorAll('.lib-tile, .mob-lib-thumb-cell').length);
step('the wall draws each frame once', tiles <= all.length + 2, `tiles=${tiles}`);
step('no page error', errors.length === 0, errors.join(' | '));
console.log('ids after:', after.photos.map((p) => `${p.id} [folder=${p.folder}]`).join(' | '));
await browser.close();
stopApp();
sampleServer.close();
console.log(fails ? `${fails} FAIL` : 'all ok');
process.exit(fails ? 1 : 0);
@@ -0,0 +1,241 @@
// TEMP repro: a drive root whose catalogue holds one frame twice — the row an
// older build filed under its raw `\`-spelled id, and the row this build filed
// beside it — must come out of UPDATE as one row, and the frame keeps the id
// this build computes. This is the state the reader was left in: two tiles for
// every frame of the disk, and an UPDATE that only ever added more.
import { spawn } from 'node:child_process';
import { createServer } from 'node:http';
import { readFile } from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
const FRONTEND = fileURLToPath(new URL('..', import.meta.url));
const SAMPLE_FILE = process.env.SAMPLE_FILE ?? path.resolve(FRONTEND, '../sample/_3279791-develop-check.jpg');
const APP_PORT = Number(process.env.APP_PORT ?? 5930);
const SAMPLE_PORT = Number(process.env.SAMPLE_PORT ?? 5931);
const ROOT = '\\';
const names = ['a1.jpg', 'a2.jpg', 'a3.jpg', 'a4.jpg'];
let fails = 0;
const step = (what, ok, detail = '') => {
if (!ok) fails++;
console.log(`${ok ? 'ok ' : 'FAIL'} ${what}${detail ? ` — ${detail}` : ''}`);
};
const playwright = await import(process.env.PLAYWRIGHT_CORE ?? 'playwright-core').catch(() => null);
if (!playwright) {
console.log('SKIP playwright-core is not installed');
process.exit(0);
}
const jpg = await readFile(SAMPLE_FILE);
const sampleServer = createServer((req, res) => {
const name = path.basename(decodeURIComponent((req.url ?? '/').split('?')[0]));
if (!names.includes(name)) {
res.writeHead(404).end();
return;
}
res.writeHead(200, { 'Content-Type': 'image/jpeg', 'Content-Length': jpg.length, 'Access-Control-Allow-Origin': '*' });
res.end(jpg);
});
await new Promise((resolve) => sampleServer.listen(SAMPLE_PORT, '127.0.0.1', resolve));
const app = process.env.BASE_URL
? null
: spawn('npx', ['vite', 'preview', '--port', String(APP_PORT), '--strictPort', '--host', '127.0.0.1'], {
cwd: FRONTEND,
stdio: 'ignore',
detached: true,
});
const stopApp = () => {
if (!app?.pid) return;
try {
process.kill(-app.pid, 'SIGTERM');
} catch {}
};
const base = process.env.BASE_URL ?? `http://127.0.0.1:${APP_PORT}`;
let up = !app;
for (let i = 0; i < 60 && !up; i++) {
up = await fetch(`${base}/library`).then((r) => r.ok).catch(() => false);
if (!up) await new Promise((r) => setTimeout(r, 500));
}
if (!up) {
stopApp();
sampleServer.close();
console.log(`FAIL no preview on ${base}`);
process.exit(1);
}
const browser = await playwright.chromium.launch({
executablePath: process.env.CHROME || undefined,
args: ['--no-sandbox', '--enable-unsafe-swiftshader'],
});
const context = await browser.newContext({ viewport: { width: 1500, height: 950 } });
await context.route('**/api/**', (route) => {
const url = route.request().url();
const json = (body) => route.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify(body) });
if (url.includes('/auth/me')) return json({ user: { id: 1, email: 'check@example.com', name: 'check', verified: true, pro: true, admin: false } });
if (url.includes('/photos')) return json({ photos: [] });
if (url.includes('/place')) return json({ place: 'Hanoi' });
if (url.includes('/ratings')) return json({ ratings: [] });
if (url.includes('/highlights')) return json({ highlights: { day: [], week: [], ever: [] } });
if (url.includes('/recipes')) return json({ recipes: [] });
return json({});
});
await context.addInitScript(
({ origin, names, root }) => {
const fileHandle = (name) => {
const handle = { kind: 'file', name, __fake: true };
Object.defineProperty(handle, 'getFile', {
value: async () => new File([await (await fetch(`${origin}/${name}`)).arrayBuffer()], name, { type: 'image/jpeg', lastModified: Date.UTC(2024, 3, 2, 12) }),
});
return handle;
};
const valuesOf = (node) =>
[...node.files.map(fileHandle)][Symbol.iterator]();
const dirHandle = (label, node) => {
const handle = { kind: 'directory', name: label, __fake: true };
Object.defineProperties(handle, {
values: { value: () => valuesOf(node) },
queryPermission: { value: async () => 'granted' },
requestPermission: { value: async () => 'granted' },
getDirectoryHandle: { value: async () => { throw new Error('no folder'); } },
getFileHandle: {
value: async (name) => {
if (!node.files.includes(name)) throw new Error(`no frame ${name}`);
return fileHandle(name);
},
},
});
return handle;
};
const rootNode = { files: names };
window.showDirectoryPicker = async () => dirHandle(root, rootNode);
const revive = (row) => {
if (row?.handle?.__fake && !Object.getOwnPropertyDescriptor(row.handle, 'getFile')) {
row.handle = row.handle.kind === 'directory' ? dirHandle(root, rootNode) : fileHandle(row.handle.name);
}
return row;
};
for (const method of ['get', 'getAll']) {
const original = IDBObjectStore.prototype[method];
IDBObjectStore.prototype[method] = function (...args) {
const request = original.apply(this, args);
const descriptor = Object.getOwnPropertyDescriptor(IDBRequest.prototype, 'result');
Object.defineProperty(request, 'result', {
configurable: true,
get() {
const value = descriptor.get.call(this);
return Array.isArray(value) ? value.map(revive) : revive(value);
},
});
return request;
};
}
},
{ origin: `http://127.0.0.1:${SAMPLE_PORT}`, names, root: ROOT }
);
const page = await context.newPage();
const errors = [];
page.on('pageerror', (e) => errors.push(String(e.message).slice(0, 200)));
if (process.env.LOG) page.on('console', (m) => console.log('PAGE:', m.text().slice(0, 300)));
const rows = () =>
page.evaluate(
(db) =>
new Promise((resolve) => {
const open = indexedDB.open(db);
open.onsuccess = () => {
const tx = open.result.transaction('photos', 'readonly');
const req = tx.objectStore('photos').getAll();
req.onsuccess = () => {
const photos = req.result.map((r) => ({ id: r.id, folder: r.folder, dir: r.dir, name: r.name }));
const t = open.result.transaction('thumbs', 'readonly');
const tr = t.objectStore('thumbs').getAll();
tr.onsuccess = () => resolve({ photos, thumbs: tr.result.map((x) => x.id) });
};
};
open.onerror = () => resolve({ photos: [], thumbs: [] });
}),
'recipescam-library'
);
await page.goto(`${base}/library`);
// The catalogue the reader is left with: a drive of frames, each filed twice.
await page.evaluate(
async ({ names, root }) => {
const DB = 'recipescam-library';
const STORES = { folders: 'name', photos: 'id', thumbs: 'id', edits: 'photoId', dirs: 'name' };
const open = (version) =>
new Promise((resolve, reject) => {
const req = version ? indexedDB.open(DB, version) : indexedDB.open(DB);
req.onupgradeneeded = () => {
for (const [store, keyPath] of Object.entries(STORES)) {
if (!req.result.objectStoreNames.contains(store)) req.result.createObjectStore(store, { keyPath });
}
};
req.onsuccess = () => resolve(req.result);
req.onerror = () => reject(req.error);
});
let db = await open();
if (!db.objectStoreNames.contains('thumbs')) {
const at = db.version;
db.close();
db = await open(at + 1);
}
const handle = await window.showDirectoryPicker();
const thumb = new Blob([new Uint8Array([1, 2, 3])], { type: 'image/jpeg' });
await new Promise((resolve, reject) => {
const tx = db.transaction(['folders', 'photos', 'thumbs'], 'readwrite');
tx.objectStore('folders').put({ name: root, label: 'D:', handle });
for (const name of names) {
// The row the older build filed, and the row this build filed beside it
// when an UPDATE read the frame as new: one frame, two rows, two tiles.
for (const id of [`${root}/${name}`, `/${name}`]) {
tx.objectStore('photos').put({
id,
folder: id.startsWith('/') ? '' : root,
name,
taken: Date.UTC(2024, 3, 2, 12),
size: 1,
addedAt: Date.now(),
});
tx.objectStore('thumbs').put({ id, thumb });
}
}
tx.oncomplete = () => resolve();
tx.onerror = () => reject(tx.error);
});
},
{ names, root: ROOT }
);
await page.reload();
await page.waitForSelector('[data-key^="lib-node-"]', { timeout: 60_000 });
const before = await rows();
step('the doubled catalogue is read', before.photos.length === names.length * 2, `${before.photos.length} rows: ${before.photos.map((p) => p.id).join(' | ')}`);
// UPDATE on the drive row.
await page.locator('[data-key^="lib-node-"]').first().click({ button: 'right' });
await page.waitForSelector('[data-key^="lib-update-"]', { timeout: 20_000 });
await page.click('[data-key^="lib-update-"]');
await page.waitForTimeout(8000);
const after = await rows();
step('UPDATE adds nothing', after.photos.length === names.length, `${after.photos.length} rows: ${after.photos.map((p) => p.id).join(' | ')}`);
step('one thumbnail per frame', after.thumbs.length === names.length, `${after.thumbs.length} thumbs: ${after.thumbs.join(' | ')}`);
step(
'the doubled rows are dropped for the id this build computes',
after.photos.every((p) => p.id === `/${p.name}`) && after.thumbs.every((id) => id.startsWith('/')),
`rows: ${after.photos.map((p) => p.id).join(' | ')}`
);
step('no page error', errors.length === 0, errors.join(' | '));
await browser.close();
stopApp();
sampleServer.close();
console.log(fails ? `${fails} FAIL` : 'all ok');
process.exit(fails ? 1 : 0);
+120 -40
View File
@@ -650,17 +650,42 @@ export async function removeFolder(name: string): Promise<void> {
// or a rotation belongs to a frame that is there.
//
// `from` is the folder the reading was pointed at, '' for the whole roll; `met`
// is every frame it found, spelled relative to the roll.
export async function prunePhotos(folder: string, from: string, met: Set<string>): Promise<void> {
// is every frame it found, spelled relative to the roll. `missing` says whether
// this reading has a word on the frames it did not meet — a reading that took up
// a position, or one that met a folder it could not open, has none and only
// clears what is said below about the frames it did meet.
export async function prunePhotos(folder: string, from: string, met: Set<string>, missing = true): Promise<void> {
try {
const root = normPath(folder);
const under = (from ? `${root}/${normPath(from)}` : root).toLowerCase();
const rows = (await listPhotos(folder)).filter((p) => {
// One frame, one row. A row this reading did not meet is a frame gone from the
// disk and goes with it — but a second row for a frame it did meet is the same
// frame filed under an id this build no longer computes, and the reader who
// asked for the disk is looking at one frame and not two: the first of the two
// rows stands, the rest go with their tiles and their marks.
const rows: LibraryPhoto[] = [];
const kept = new Map<string, LibraryPhoto>();
for (const p of await listPhotos(folder)) {
const rel = (p.dir ? `${normPath(p.dir)}/${p.name}` : p.name).toLowerCase();
const key = `${root.toLowerCase()}/${rel}`;
if (from && key !== under && !key.startsWith(`${under}/`)) return false;
return !met.has(rel);
});
if (from && key !== under && !key.startsWith(`${under}/`)) continue;
if (!met.has(rel)) {
if (missing) rows.push(p);
continue;
}
const at = kept.get(key);
if (!at) {
kept.set(key, p);
continue;
}
// The row filed under the path this build computes is the one that stands;
// the other is the same frame under a spelling nothing reads, and it is
// this reading that has the frame in hand — so it goes, with its tile and
// its marks.
const stale = at.id.toLowerCase() === key ? p : at;
if (stale === at) kept.set(key, p);
rows.push(stale);
}
if (!rows.length) return;
const gone = new Set(rows.map((p) => p.id));
if (cached) cached = cached.filter((p) => !gone.has(p.id));
@@ -1188,9 +1213,22 @@ export async function scanFolder(
if (!handle) throw new Error('no-folder-handle');
const rawKnown = await listPhotos(folder.name);
const known = new Map<string, LibraryPhoto>();
// The frame is its path, and the path is what two spellings of it have in
// common: a catalogue written by a build that filed a drive root's frames under
// `\/2017\a.RAF` — the raw name, before `photoId` folded the separators — holds
// this frame already, and a reading that looked it up by the id it computes
// would find nothing and file a second row and a second tile beside the first.
const knownPath = new Map<string, LibraryPhoto>();
const pathIn = (p: LibraryPhoto) =>
`${normPath(p.folder)}${p.dir ? `/${normPath(p.dir)}` : ''}/${p.name}`.toLowerCase();
for (const p of rawKnown) {
known.set(p.id, p);
known.set(p.id.toLowerCase(), p);
const path = pathIn(p);
// The row filed under the id this build computes is the one the frame is
// written back to; the other spelling is the same frame and stands only
// where it is the only row there is.
if (!knownPath.has(path) || p.id.toLowerCase() === path) knownPath.set(path, p);
}
// A reading kept to one folder keeps no position of its own. The position file
// belongs to the reading that walks the whole roll, and a fraction of the tree
@@ -1474,7 +1512,13 @@ export async function scanFolder(
}
const file = await withTimeout(handle.getFile(), READ_MS);
const id = photoId(folder.name, rel);
const seen = known.get(id);
// The row the catalogue already holds for this frame, found by the id this
// reading computes and, failing that, by the path both spellings share — and
// the frame is written back under the id it is filed under: one frame is one
// row, one tile and one recipe, whatever a build before this one spelled it.
const held = known.get(id) ?? knownPath.get(`${normPath(folder.name)}/${normPath(rel)}`.toLowerCase());
const filed = held?.id ?? id;
const seen = held;
if (seen && seen.size === file.size && seen.mtime === file.lastModified) return;
// Where the frame was taken, off the few hundred kilobytes of its head that
// its own EXIF lives in — where the 32MB a camera's RAW used to be read for
@@ -1495,7 +1539,7 @@ export async function scanFolder(
const relNorm = rel.replace(/\\/g, '/');
const cut = relNorm.lastIndexOf('/');
const row: LibraryPhoto = {
id,
id: filed,
folder: normPath(folder.name),
dir: cut < 0 ? '' : normPath(relNorm.slice(0, cut)),
name: handle.name,
@@ -1661,8 +1705,11 @@ export async function scanFolder(
// walked are folders this reading never listed — and one that met a folder it
// could not open are all readings with no word on the frames they did not
// reach, and what they did not reach is not theirs to drop. See `prunePhotos`.
if (!stop && !failed.size && (bounded || !resumed)) {
await prunePhotos(folder.name, bounded ? from : '', countedDiscovered);
// The frame met twice under one path is the other half of that and is dropped
// whatever the reading is: a row is said about here by the frame it is, and
// that frame this reading has just had in hand.
if (!stop) {
await prunePhotos(folder.name, bounded ? from : '', countedDiscovered, !failed.size && (bounded || !resumed));
}
// What the walk found, kept where the catalogue is kept, so the column has it
// on the next visit whether the reading ran to its end or was cut off. A
@@ -2171,9 +2218,24 @@ async function writeThumb(id: string, blob: Blob, tell: boolean): Promise<void>
if (tell) for (const listener of thumbListeners) listener(id, blob);
try {
const db = await openDb();
if (!db.objectStoreNames.contains(THUMBS)) return;
const tx = db.transaction(THUMBS, 'readwrite');
tx.objectStore(THUMBS).put({ id, thumb: blob });
if (!db.objectStoreNames.contains(THUMBS) || !db.objectStoreNames.contains(PHOTOS)) return;
// A tile belongs to a frame the catalogue holds: a frame the wall asked for
// the tile of is one it drew off a row — and a reading that runs behind the
// wall is a reading that may drop that row while the tile is being made. The
// tile would then be kept for a row nothing has, a store with one more tile
// in it than there are frames, which is `makeThumbs` reading the folder as
// short of a tile it will never be drawn out of. The read of the row and the
// write of the tile are one transaction, so the reading cannot step between
// them.
await new Promise<void>((resolve, reject) => {
const tx = db.transaction([PHOTOS, THUMBS], 'readwrite');
const req = tx.objectStore(PHOTOS).get(id);
req.onsuccess = () => {
if (req.result) tx.objectStore(THUMBS).put({ id, thumb: blob });
};
tx.oncomplete = () => resolve();
tx.onerror = () => reject(tx.error);
});
} catch {
// The tile is in hand either way; where it is not kept it is made again.
}
@@ -2466,38 +2528,56 @@ export async function readPhotos(
// one folder's rows are the run of keys between the folder and its own name:
// the rows the index handed back, asked of the store, a chunk at a time.
const root = folder === undefined ? null : normPath(folder);
const at = (last: string | null): IDBKeyRange =>
root === null
? IDBKeyRange.lowerBound(last ?? '', last !== null)
: IDBKeyRange.bound(last ?? `${root}/`, `${root}/\uffff`, last !== null, false);
// A folder whose name carries a separator is a folder with two spellings: the
// picker hands a drive root `\` where `normPath` writes `''`, and the build
// that filed its frames before `photoId` folded the separators filed them all
// under the raw one — `\/2017\a.RAF` where this build writes `/2017/a.RAF`.
// A row in the other spelling is a row nothing reads: the reading of the disk
// meets the same frame again under the id it computes, finds nothing, and
// files a second row and a second tile beside the row it cannot see — and the
// repair that would drop it reads the folder the same way, so the two stay.
// The raw range is read with the computed one, and its rows come back under
// the ids they are filed under, for `scanFolder` to keep their frame from
// being filed twice and `prunePhotos` to drop against the spelling that
// stands. See both.
const raw = folder !== undefined && folder !== root ? folder : null;
const rows: LibraryPhoto[] = [];
let last: string | null = null;
let emittedFirst = false;
for (;;) {
const chunk = await new Promise<LibraryPhoto[]>((resolve, reject) => {
const req = db.transaction(PHOTOS, 'readonly').objectStore(PHOTOS).getAll(at(last), READ_CHUNK);
req.onsuccess = () => resolve(req.result as LibraryPhoto[]);
req.onerror = () => reject(req.error);
});
if (!chunk.length) break;
last = chunk[chunk.length - 1].id;
for (const row of chunk) {
// Neither is read again: the file a frame is opened from is the folder's
// business — see `fileHandleFor` — and the tile is the store's own.
delete (row as { handle?: unknown }).handle;
delete (row as { thumb?: unknown }).thumb;
}
rows.push(...chunk);
const sweep = async (base: string): Promise<void> => {
let last: string | null = null;
for (;;) {
const chunk = await new Promise<LibraryPhoto[]>((resolve, reject) => {
const range =
root === null
? IDBKeyRange.lowerBound(last ?? '', last !== null)
: IDBKeyRange.bound(last ?? `${base}/`, `${base}/\uffff`, last !== null, false);
const req = db.transaction(PHOTOS, 'readonly').objectStore(PHOTOS).getAll(range, READ_CHUNK);
req.onsuccess = () => resolve(req.result as LibraryPhoto[]);
req.onerror = () => reject(req.error);
});
if (!chunk.length) break;
last = chunk[chunk.length - 1].id;
for (const row of chunk) {
// Neither is read again: the file a frame is opened from is the folder's
// business — see `fileHandleFor` — and the tile is the store's own.
delete (row as { handle?: unknown }).handle;
delete (row as { thumb?: unknown }).thumb;
}
rows.push(...chunk);
if (onBatch && !emittedFirst && rows.length >= 400) {
emittedFirst = true;
const initial = [...rows].sort((a, b) => b.taken - a.taken);
onBatch(initial);
}
if (onBatch && !emittedFirst && rows.length >= 400) {
emittedFirst = true;
const initial = [...rows].sort((a, b) => b.taken - a.taken);
onBatch(initial);
}
if (chunk.length < READ_CHUNK) break;
}
if (chunk.length < READ_CHUNK) break;
}
};
await sweep(root ?? '');
if (raw) await sweep(raw);
rows.sort((a, b) => b.taken - a.taken);
if (!folder) {
cached = rows;