static void verifyStickerPackValidity()

in Android/app/src/main/java/com/example/samplestickerapp/StickerPackValidator.java [52:121]
70 lines of code
32 McCabe index (conditional complexity)

    static void verifyStickerPackValidity(@NonNull Context context, @NonNull StickerPack stickerPack) throws IllegalStateException {
        if (TextUtils.isEmpty(stickerPack.identifier)) {
            throw new IllegalStateException("sticker pack identifier is empty");
        }
        if (stickerPack.identifier.length() > CHAR_COUNT_MAX) {
            throw new IllegalStateException("sticker pack identifier cannot exceed " + CHAR_COUNT_MAX + " characters");
        }
        checkStringValidity(stickerPack.identifier);
        if (TextUtils.isEmpty(stickerPack.publisher)) {
            throw new IllegalStateException("sticker pack publisher is empty, sticker pack identifier: " + stickerPack.identifier);
        }
        if (stickerPack.publisher.length() > CHAR_COUNT_MAX) {
            throw new IllegalStateException("sticker pack publisher cannot exceed " + CHAR_COUNT_MAX + " characters, sticker pack identifier: " + stickerPack.identifier);
        }
        if (TextUtils.isEmpty(stickerPack.name)) {
            throw new IllegalStateException("sticker pack name is empty, sticker pack identifier: " + stickerPack.identifier);
        }
        if (stickerPack.name.length() > CHAR_COUNT_MAX) {
            throw new IllegalStateException("sticker pack name cannot exceed " + CHAR_COUNT_MAX + " characters, sticker pack identifier: " + stickerPack.identifier);
        }
        if (TextUtils.isEmpty(stickerPack.trayImageFile)) {
            throw new IllegalStateException("sticker pack tray id is empty, sticker pack identifier:" + stickerPack.identifier);
        }
        if (!TextUtils.isEmpty(stickerPack.androidPlayStoreLink) && !isValidWebsiteUrl(stickerPack.androidPlayStoreLink)) {
            throw new IllegalStateException("Make sure to include http or https in url links, android play store link is not a valid url: " + stickerPack.androidPlayStoreLink);
        }
        if (!TextUtils.isEmpty(stickerPack.androidPlayStoreLink) && !isURLInCorrectDomain(stickerPack.androidPlayStoreLink, PLAY_STORE_DOMAIN)) {
            throw new IllegalStateException("android play store link should use play store domain: " + PLAY_STORE_DOMAIN);
        }
        if (!TextUtils.isEmpty(stickerPack.iosAppStoreLink) && !isValidWebsiteUrl(stickerPack.iosAppStoreLink)) {
            throw new IllegalStateException("Make sure to include http or https in url links, ios app store link is not a valid url: " + stickerPack.iosAppStoreLink);
        }
        if (!TextUtils.isEmpty(stickerPack.iosAppStoreLink) && !isURLInCorrectDomain(stickerPack.iosAppStoreLink, APPLE_STORE_DOMAIN)) {
            throw new IllegalStateException("iOS app store link should use app store domain: " + APPLE_STORE_DOMAIN);
        }
        if (!TextUtils.isEmpty(stickerPack.licenseAgreementWebsite) && !isValidWebsiteUrl(stickerPack.licenseAgreementWebsite)) {
            throw new IllegalStateException("Make sure to include http or https in url links, license agreement link is not a valid url: " + stickerPack.licenseAgreementWebsite);
        }
        if (!TextUtils.isEmpty(stickerPack.privacyPolicyWebsite) && !isValidWebsiteUrl(stickerPack.privacyPolicyWebsite)) {
            throw new IllegalStateException("Make sure to include http or https in url links, privacy policy link is not a valid url: " + stickerPack.privacyPolicyWebsite);
        }
        if (!TextUtils.isEmpty(stickerPack.publisherWebsite) && !isValidWebsiteUrl(stickerPack.publisherWebsite)) {
            throw new IllegalStateException("Make sure to include http or https in url links, publisher website link is not a valid url: " + stickerPack.publisherWebsite);
        }
        if (!TextUtils.isEmpty(stickerPack.publisherEmail) && !Patterns.EMAIL_ADDRESS.matcher(stickerPack.publisherEmail).matches()) {
            throw new IllegalStateException("publisher email does not seem valid, email is: " + stickerPack.publisherEmail);
        }
        try {
            final byte[] stickerAssetBytes = StickerPackLoader.fetchStickerAsset(stickerPack.identifier, stickerPack.trayImageFile, context.getContentResolver());
            if (stickerAssetBytes.length > TRAY_IMAGE_FILE_SIZE_MAX_KB * KB_IN_BYTES) {
                throw new IllegalStateException("tray image should be less than " + TRAY_IMAGE_FILE_SIZE_MAX_KB + " KB, tray image file: " + stickerPack.trayImageFile);
            }
            Bitmap bitmap = BitmapFactory.decodeByteArray(stickerAssetBytes, 0, stickerAssetBytes.length);
            if (bitmap.getHeight() > TRAY_IMAGE_DIMENSION_MAX || bitmap.getHeight() < TRAY_IMAGE_DIMENSION_MIN) {
                throw new IllegalStateException("tray image height should between " + TRAY_IMAGE_DIMENSION_MIN + " and " + TRAY_IMAGE_DIMENSION_MAX + " pixels, current tray image height is " + bitmap.getHeight() + ", tray image file: " + stickerPack.trayImageFile);
            }
            if (bitmap.getWidth() > TRAY_IMAGE_DIMENSION_MAX || bitmap.getWidth() < TRAY_IMAGE_DIMENSION_MIN) {
                throw new IllegalStateException("tray image width should be between " + TRAY_IMAGE_DIMENSION_MIN + " and " + TRAY_IMAGE_DIMENSION_MAX + " pixels, current tray image width is " + bitmap.getWidth() + ", tray image file: " + stickerPack.trayImageFile);
            }
        } catch (IOException e) {
            throw new IllegalStateException("Cannot open tray image, " + stickerPack.trayImageFile, e);
        }
        final List<Sticker> stickers = stickerPack.getStickers();
        if (stickers.size() < STICKER_SIZE_MIN || stickers.size() > STICKER_SIZE_MAX) {
            throw new IllegalStateException("sticker pack sticker count should be between 3 to 30 inclusive, it currently has " + stickers.size() + ", sticker pack identifier: " + stickerPack.identifier);
        }
        for (final Sticker sticker : stickers) {
            validateSticker(context, stickerPack.identifier, sticker, stickerPack.animatedStickerPack);
        }
    }