private static void validateStickerFile()

in Android/app/src/main/java/com/example/samplestickerapp/StickerPackValidator.java [136:170]
35 lines of code
13 McCabe index (conditional complexity)

    private static void validateStickerFile(@NonNull Context context, @NonNull String identifier, @NonNull final String fileName, final boolean animatedStickerPack) throws IllegalStateException {
        try {
            final byte[] stickerInBytes = StickerPackLoader.fetchStickerAsset(identifier, fileName, context.getContentResolver());
            if (!animatedStickerPack && stickerInBytes.length > STATIC_STICKER_FILE_LIMIT_KB * KB_IN_BYTES) {
                throw new IllegalStateException("static sticker should be less than " + STATIC_STICKER_FILE_LIMIT_KB + "KB, current file is " + stickerInBytes.length / KB_IN_BYTES + " KB, sticker pack identifier: " + identifier + ", filename: " + fileName);
            }
            if (animatedStickerPack && stickerInBytes.length > ANIMATED_STICKER_FILE_LIMIT_KB * KB_IN_BYTES) {
                throw new IllegalStateException("animated sticker should be less than " + ANIMATED_STICKER_FILE_LIMIT_KB + "KB, current file is " + stickerInBytes.length / KB_IN_BYTES + " KB, sticker pack identifier: " + identifier + ", filename: " + fileName);
            }
            try {
                final WebPImage webPImage = WebPImage.createFromByteArray(stickerInBytes, ImageDecodeOptions.defaults());
                if (webPImage.getHeight() != IMAGE_HEIGHT) {
                    throw new IllegalStateException("sticker height should be " + IMAGE_HEIGHT + ", current height is " + webPImage.getHeight() + ", sticker pack identifier: " + identifier + ", filename: " + fileName);
                }
                if (webPImage.getWidth() != IMAGE_WIDTH) {
                    throw new IllegalStateException("sticker width should be " + IMAGE_WIDTH + ", current width is " + webPImage.getWidth() + ", sticker pack identifier: " + identifier + ", filename: " + fileName);
                }
                if (animatedStickerPack) {
                    if (webPImage.getFrameCount() <= 1) {
                        throw new IllegalStateException("this pack is marked as animated sticker pack, all stickers should animate, sticker pack identifier: " + identifier + ", filename: " + fileName);
                    }
                    checkFrameDurationsForAnimatedSticker(webPImage.getFrameDurations(), identifier, fileName);
                    if (webPImage.getDuration() > ANIMATED_STICKER_TOTAL_DURATION_MAX) {
                        throw new IllegalStateException("sticker animation max duration is: " + ANIMATED_STICKER_TOTAL_DURATION_MAX + " ms, current duration is: " + webPImage.getDuration() + " ms, sticker pack identifier: " + identifier + ", filename: " + fileName);
                    }
                } else if (webPImage.getFrameCount() > 1) {
                    throw new IllegalStateException("this pack is not marked as animated sticker pack, all stickers should be static stickers, sticker pack identifier: " + identifier + ", filename: " + fileName);
                }
            } catch (IllegalArgumentException e) {
                throw new IllegalStateException("Error parsing webp image, sticker pack identifier: " + identifier + ", filename: " + fileName, e);
            }
        } catch (IOException e) {
            throw new IllegalStateException("cannot open sticker file: sticker pack identifier: " + identifier + ", filename: " + fileName, e);
        }
    }