exif() returns every EXIF tag in the file (closes #156)

`photo.exif()` returns `ExifTags`: every EXIF tag exifreader reads from the file, keyed by tag name, each with exifreader's `id`, `value`, `description` and `computed`. The embedded thumbnail's tags are under `Thumbnail`, without the thumbnail image. A file with no EXIF, or a video, gives `{}`.

The thirteen typed methods stay. Each picks its field from the tags `exif()` returns through `readPhotoExif`, which now takes the tags instead of the bytes. GPS latitude and longitude are worked out from their tags and reference tags, since exifreader's computed position is not among the tags.

Also closes #148.

Model: opus-5-5

README.md

@@ -884,10 +884,7 @@ current account's records name.
 
 A live photo's original is cached as at its save path: its image and its video,
 each `originals/<fileID>.<ext>` with its own extension, and
-`originals/<fileID>.livephoto.json` naming them; the two are evicted together. A
-live photo that an earlier version cached as its ZIP is not served: the library
-removes the ZIP when it opens the cache, and fetches the two files when the
-photo is next read or precached.
+`originals/<fileID>.livephoto.json` naming them; the two are evicted together.
 
 A stored file appears only via an atomic temp-then-rename, so its presence means
 it is complete. Every downloaded original (by `quak get`, the cache, or

TODO.md

@@ -32,6 +32,10 @@ declares one.
   field from the tags `exif()` returns, typed as in `PhotoExif`. The example
   script's JSON files now carry every tag.
 
+- 2026-10-01: The content cache no longer looks for a live photo that an earlier
+  version cached as one ZIP (issue 151). When the cache opens, a live photo's
+  file that no JSON file names is now always left alone.
+
 - 2026-10-01: `examples/download-albums.ts` logs in, opens the library, and for
   every album downloads each photo to its save path, writes the photo's record
   and EXIF fields to a JSON file beside it, and writes the album's photos to

src/download/index.ts

@@ -361,8 +361,8 @@ const openPart = async (
 // written unpacked: each part is named `destination` with the extension
 // replaced by its own entry's, and the two must differ ignoring case. When the
 // file records a hash, `<imageHash>:<videoHash>` must match it, each over that
-// part's own bytes. Only then is whatever was at `destination` removed and the
-// image, then the video, renamed into place; on any failure neither is stored.
+// part's own bytes. Only then are the image, then the video, renamed into
+// place; on any failure neither is stored.
 //
 // The ZIP is chosen by its uploader and may expand enormously, so each part is
 // written as it decompresses and never held, and the ZIP is refused once the
@@ -486,7 +486,6 @@ const decryptLivePhoto = async (
             await part.handle.sync();
             await part.handle.close();
         }
-        await rm(destination, { force: true });
         await rename(image.tmpPath, path);
         try {
             await rename(video.tmpPath, videoPath);
@@ -570,8 +569,7 @@ const fetchAndDecrypt = async (
     }, api.getRetryOptions());
 
 // Write `file`'s original to `outPath`. A live photo is written as its image
-// and its video beside `outPath` instead, and whatever was at `outPath` is
-// removed (see `decryptLivePhoto`).
+// and its video beside `outPath` instead (see `decryptLivePhoto`).
 export const downloadFile = async (
     api: ApiClient,
     file: EnteFile,

src/library/content.ts

@@ -29,14 +29,7 @@
 // the cache does not count as saved there, but is copied there rather than
 // fetched again.
 
-import {
-    closeSync,
-    existsSync,
-    openSync,
-    readFileSync,
-    readSync,
-    statSync,
-} from "node:fs";
+import { existsSync, readFileSync, statSync } from "node:fs";
 import {
     chmod,
     copyFile,
@@ -281,25 +274,6 @@ const fileSize = (path: string): number | undefined => {
 const hasContent = (path: string | undefined): boolean =>
     path !== undefined && (fileSize(path) ?? 0) > 0;
 
-// Whether the file at `path` begins as a ZIP does, with `PK\x03\x04`. False
-// when it cannot be read.
-const isZip = (path: string): boolean => {
-    try {
-        const fd = openSync(path, "r");
-        try {
-            const head = Buffer.alloc(4);
-            return (
-                readSync(fd, head, 0, 4, 0) === 4 &&
-                head.toString("latin1") === "PK\x03\x04"
-            );
-        } finally {
-            closeSync(fd);
-        }
-    } catch {
-        return false;
-    }
-};
-
 // A live photo's image and video are named with the extensions from inside its
 // ZIP, so their names alone do not say which is which. Wherever the cache or a
 // save path stores one, a JSON file of this name beside them names both.
@@ -713,8 +687,10 @@ export class ContentCache implements PhotoContent, ThumbnailsAPI {
                     await this.touch(cached.path);
                 return { ...cached, bytes: size, cached: true };
             }
-            // A recorded file that has since gone, or a live photo an earlier
-            // version stored as one ZIP, re-fetches below.
+            // A recorded file that has since gone re-fetches below. So does a
+            // live photo recorded with no video: the cache opened before the
+            // library's records said it is a live photo, while its image and
+            // video had no JSON file beside them yet.
             known.delete(fileID);
         }
 
@@ -983,20 +959,14 @@ export class ContentCache implements PhotoContent, ThumbnailsAPI {
             if (id === undefined || !existsSync(path)) continue;
             // A live photo's image and video are one entry, as the JSON file
             // beside them names them. A live photo's file with no such JSON
-            // file is not its original. If it is a ZIP, it is the one an
-            // earlier version stored under the image's name, and is removed.
-            // Any other is left alone: another process may have just stored
-            // it and not yet written the JSON file.
+            // file is not its original and is left alone: another process may
+            // have just stored it and not yet written the JSON file.
             const livePhoto = names.has(livePhotoJSONName(String(id)))
                 ? readLivePhotoJSON(dir, String(id))
                 : undefined;
             if (livePhoto !== undefined) {
                 into.set(id, livePhoto);
-            } else if (isLivePhoto(id)) {
-                if (isZip(path)) {
-                    await rm(path, { force: true }).catch(() => undefined);
-                }
-            } else {
+            } else if (!isLivePhoto(id)) {
                 into.set(id, { path });
             }
         }

test/download/download.test.ts

@@ -1883,15 +1883,6 @@ describe("downloadFile live photos", () => {
         expect(readdirSync(t.dir).sort()).toEqual(["f.JPG", "f.bin"]);
     });
 
-    it("replaces what was at the destination, such as an earlier ZIP of the two", async () => {
-        const t = setup(livePhotoZip(), livePhoto);
-        writeFileSync(t.outPath, livePhotoZip());
-
-        await t.run();
-
-        expect(readdirSync(t.dir).sort()).toEqual(["f.heic", "f.mov"]);
-    });
-
     it("renames the image and then the video into place, each from its own temp file", async () => {
         const t = setup(livePhotoZip(), livePhoto);
 

test/library/content-library.test.ts

@@ -176,7 +176,7 @@ describe("Library content wiring", () => {
         await lib.close();
     });
 
-    it("removes a live photo's ZIP an earlier version cached when it opens, and precaches its image and video", async () => {
+    it("does not take a live photo's image or video with no JSON file as its original when it opens, and precaches both", async () => {
         const { file: live, body } = await asLivePhoto(file(1, 1));
         class LiveClient extends MockClient {
             override async filesSince(): Promise<FilesPage> {
@@ -197,7 +197,8 @@ describe("Library content wiring", () => {
         // A first run records the library, so the next one knows that file 1
         // is a live photo when it opens the cache.
         await (await open({})).close();
-        writeFileSync(join(originals, "1.jpg"), livePhotoZip());
+        writeFileSync(join(originals, "1.heic"), "an image");
+        writeFileSync(join(originals, "1.mov"), "a video");
 
         let precached!: () => void;
         const done = new Promise<void>((r) => (precached = r));
@@ -208,7 +209,9 @@ describe("Library content wiring", () => {
                     precached();
             },
         });
-        expect(existsSync(join(originals, "1.jpg"))).toBe(false);
+        expect(
+            lib.photos.byID({ fileID: 1 })!.record().originalPath,
+        ).toBeUndefined();
         await done;
 
         expect(readdirSync(originals).sort()).toEqual([
@@ -216,6 +219,17 @@ describe("Library content wiring", () => {
             "1.livephoto.json",
             "1.mov",
         ]);
+        expect(readFileSync(join(originals, "1.heic"))).toEqual(
+            Buffer.from(IMAGE),
+        );
+        expect(readFileSync(join(originals, "1.mov"))).toEqual(
+            Buffer.from(VIDEO),
+        );
+        expect(
+            JSON.parse(
+                readFileSync(join(originals, "1.livephoto.json"), "utf-8"),
+            ),
+        ).toEqual({ image: "1.heic", video: "1.mov" });
         expect(lib.photos.byID({ fileID: 1 })!.record().originalPath).toBe(
             join(originals, "1.heic"),
         );

test/library/content.test.ts

@@ -566,43 +566,6 @@ describe("ContentCache live photos", () => {
         expect(events).toEqual(["skipped"]);
     });
 
-    it("replaces a live photo an earlier version stored as a ZIP under the image's name", async () => {
-        const { file: live, body } = await asLivePhoto(file(5, "IMG_5.HEIC"));
-        mkdirSync(originals(), { recursive: true });
-        writeFileSync(join(originals(), "5.HEIC"), livePhotoZip());
-        const cache = cacheOf([live], new Map([[5, body]]));
-        // Opened without being told that file 5 is a live photo, the cache
-        // records the ZIP, and does not serve it.
-        await cache.open();
-
-        const result = await cache.original(5);
-
-        expect(result.videoPath).toBe(join(originals(), "5.mov"));
-        expect(readdirSync(originals()).sort()).toEqual([
-            "5.heic",
-            "5.livephoto.json",
-            "5.mov",
-        ]);
-    });
-
-    it("removes a live photo's ZIP an earlier version stored when it opens, so the precache fetches the image and video", async () => {
-        const { file: live, body } = await asLivePhoto(file(5, "IMG_5.HEIC"));
-        mkdirSync(originals(), { recursive: true });
-        writeFileSync(join(originals(), "5.HEIC"), livePhotoZip());
-        const cache = cacheOf([live], new Map([[5, body]]));
-
-        await cache.open((fileID) => fileID === 5);
-
-        expect(readdirSync(originals())).toEqual([]);
-        expect(cache.pathsFor(5)).toEqual({});
-        const [fetched] = await cache.ensureOriginals({ fileIDs: [5] });
-        expect(fetched).toEqual({
-            fileID: 5,
-            path: join(originals(), "5.heic"),
-        });
-        expect(cache.pathsFor(5)).toEqual({ originalPath: fetched!.path });
-    });
-
     it("leaves the image and video another process has just stored when it opens before their JSON file is written", async () => {
         const { file: live, body } = await asLivePhoto(file(5, "IMG_5.HEIC"));
         const server = cdnSource(new Map([[5, body]]));
@@ -633,6 +596,36 @@ describe("ContentCache live photos", () => {
         expect(second!.pathsFor(5)).toEqual({});
     });
 
+    it("fetches a live photo's image and video again when the cache opened before knowing it is a live photo and no JSON file names them", async () => {
+        const { file: live, body } = await asLivePhoto(file(5, "IMG_5.HEIC"));
+        mkdirSync(originals(), { recursive: true });
+        writeFileSync(join(originals(), "5.heic"), "an image");
+        writeFileSync(join(originals(), "5.mov"), "a video");
+        const cache = cacheOf([live], new Map([[5, body]]));
+        // Opened without being told that file 5 is a live photo, the cache
+        // records one of the two files as its original, with no video.
+        await cache.open();
+
+        const events: string[] = [];
+        const result = await cache.original(5, {
+            onProgress: (e) => events.push(e.status),
+        });
+
+        expect(events.at(-1)).toBe("done");
+        expect(result).toEqual({
+            path: join(originals(), "5.heic"),
+            videoPath: join(originals(), "5.mov"),
+            bytes: IMAGE.length,
+        });
+        expect(readFileSync(result.path)).toEqual(Buffer.from(IMAGE));
+        expect(readFileSync(result.videoPath!)).toEqual(Buffer.from(VIDEO));
+        expect(
+            JSON.parse(
+                readFileSync(join(originals(), "5.livephoto.json"), "utf-8"),
+            ),
+        ).toEqual({ image: "5.heic", video: "5.mov" });
+    });
+
     it.each(["missing", "empty"])(
         "fetches a live photo again when the video its JSON file names is %s",
         async (state) => {