Add a right-click copy link and share menu on gallery photos with stable per-photo permalinks

tests/test_image_processor.py

@@ -135,3 +135,79 @@ def test_generate_favicon_ico_no_favicon_skips(tmp_path):
     output_path = tmp_path / "output" / "favicon.ico"
     ip.generate_favicon_ico({}, tmp_path, output_path)
     assert not output_path.exists()
+
+
+def test_compute_photo_ids_hashes_original_files(tmp_path, make_image):
+    import hashlib
+
+    img_dir = tmp_path / "photos"
+    a = make_image(img_dir / "gallery" / "a.jpg", color=(1, 2, 3))
+    make_image(img_dir / "gallery" / "b.jpg", color=(200, 10, 10))
+    images = [{"src": "gallery/a.jpg"}, {"src": "gallery/b.jpg"}, {"src": "gallery/missing.jpg"}]
+
+    ip.compute_photo_ids(images, img_dir)
+
+    assert images[0]["photo_id"] == hashlib.sha256(a.read_bytes()).hexdigest()
+    assert len(images[1]["photo_id"]) == 64
+    assert images[0]["photo_id"] != images[1]["photo_id"]
+    assert "photo_id" not in images[2]
+
+
+def test_compute_photo_ids_is_independent_of_order_and_name(tmp_path, make_image):
+    img_dir = tmp_path / "photos"
+    make_image(img_dir / "gallery" / "a.jpg", color=(1, 2, 3))
+    (img_dir / "gallery" / "renamed.jpg").write_bytes((img_dir / "gallery" / "a.jpg").read_bytes())
+    make_image(img_dir / "gallery" / "b.jpg", color=(9, 9, 9))
+    first = [{"src": "gallery/a.jpg"}, {"src": "gallery/b.jpg"}]
+    second = [{"src": "gallery/b.jpg"}, {"src": "gallery/renamed.jpg"}]
+
+    ip.compute_photo_ids(first, img_dir)
+    ip.compute_photo_ids(second, img_dir)
+
+    assert first[0]["photo_id"] == second[1]["photo_id"]
+    assert first[1]["photo_id"] == second[0]["photo_id"]
+
+
+def test_compute_photo_ids_suffixes_duplicates(tmp_path, make_image):
+    img_dir = tmp_path / "photos"
+    make_image(img_dir / "gallery" / "a.jpg")
+    images = [{"src": "gallery/a.jpg"}, {"src": "gallery/a.jpg"}, {"src": "gallery/a.jpg"}]
+
+    ip.compute_photo_ids(images, img_dir)
+
+    base = images[0]["photo_id"]
+    assert images[1]["photo_id"] == f"{base}-2"
+    assert images[2]["photo_id"] == f"{base}-3"
+
+
+def test_generate_share_preview_resizes_to_jpeg(tmp_path, make_image):
+    input_path = make_image(tmp_path / "in.png", size=(2400, 1600), fmt="PNG")
+    output_path = tmp_path / "share" / "x.jpg"
+
+    size = ip.generate_share_preview(input_path, output_path)
+
+    assert size == (1200, 800)
+    with Image.open(output_path) as img:
+        assert img.format == "JPEG"
+        assert img.size == (1200, 800)
+
+
+def test_generate_share_preview_converts_embedded_profile_to_srgb(tmp_path):
+    from PIL import ImageCms
+
+    input_path = tmp_path / "in.jpg"
+    srgb_bytes = ImageCms.ImageCmsProfile(ImageCms.createProfile("sRGB")).tobytes()
+    Image.new("RGB", (300, 200), (10, 200, 30)).save(input_path, "JPEG", icc_profile=srgb_bytes)
+    output_path = tmp_path / "out.jpg"
+
+    size = ip.generate_share_preview(input_path, output_path)
+
+    assert size == (300, 200)
+    with Image.open(output_path) as img:
+        assert img.mode == "RGB"
+
+
+def test_generate_share_preview_failure_returns_none(tmp_path):
+    bad = tmp_path / "bad.jpg"
+    bad.write_bytes(b"not an image")
+    assert ip.generate_share_preview(bad, tmp_path / "out.jpg") is None