private static StickerPack readStickerPack()

in Android/app/src/main/java/com/example/samplestickerapp/ContentFileParser.java [66:148]
83 lines of code
23 McCabe index (conditional complexity)

    private static StickerPack readStickerPack(@NonNull JsonReader reader) throws IOException, IllegalStateException {
        reader.beginObject();
        String identifier = null;
        String name = null;
        String publisher = null;
        String trayImageFile = null;
        String publisherEmail = null;
        String publisherWebsite = null;
        String privacyPolicyWebsite = null;
        String licenseAgreementWebsite = null;
        String imageDataVersion = "";
        boolean avoidCache = false;
        boolean animatedStickerPack = false;
        List<Sticker> stickerList = null;
        while (reader.hasNext()) {
            String key = reader.nextName();
            switch (key) {
                case "identifier":
                    identifier = reader.nextString();
                    break;
                case "name":
                    name = reader.nextString();
                    break;
                case "publisher":
                    publisher = reader.nextString();
                    break;
                case "tray_image_file":
                    trayImageFile = reader.nextString();
                    break;
                case "publisher_email":
                    publisherEmail = reader.nextString();
                    break;
                case "publisher_website":
                    publisherWebsite = reader.nextString();
                    break;
                case "privacy_policy_website":
                    privacyPolicyWebsite = reader.nextString();
                    break;
                case "license_agreement_website":
                    licenseAgreementWebsite = reader.nextString();
                    break;
                case "stickers":
                    stickerList = readStickers(reader);
                    break;
                case "image_data_version":
                    imageDataVersion = reader.nextString();
                    break;
                case "avoid_cache":
                    avoidCache = reader.nextBoolean();
                    break;
                case "animated_sticker_pack":
                    animatedStickerPack = reader.nextBoolean();
                    break;
                default:
                    reader.skipValue();
            }
        }
        if (TextUtils.isEmpty(identifier)) {
            throw new IllegalStateException("identifier cannot be empty");
        }
        if (TextUtils.isEmpty(name)) {
            throw new IllegalStateException("name cannot be empty");
        }
        if (TextUtils.isEmpty(publisher)) {
            throw new IllegalStateException("publisher cannot be empty");
        }
        if (TextUtils.isEmpty(trayImageFile)) {
            throw new IllegalStateException("tray_image_file cannot be empty");
        }
        if (stickerList == null || stickerList.size() == 0) {
            throw new IllegalStateException("sticker list is empty");
        }
        if (identifier.contains("..") || identifier.contains("/")) {
            throw new IllegalStateException("identifier should not contain .. or / to prevent directory traversal");
        }
        if (TextUtils.isEmpty(imageDataVersion)) {
            throw new IllegalStateException("image_data_version should not be empty");
        }
        reader.endObject();
        final StickerPack stickerPack = new StickerPack(identifier, name, publisher, trayImageFile, publisherEmail, publisherWebsite, privacyPolicyWebsite, licenseAgreementWebsite, imageDataVersion, avoidCache, animatedStickerPack);
        stickerPack.setStickers(stickerList);
        return stickerPack;
    }