Added support Webhook entity

src/main/kotlin/com/ecwid/apiclient/v3/dto/webhook/Webhook.kt

@@ -0,0 +1,134 @@
+package com.ecwid.apiclient.v3.dto.webhook
+
+import com.google.gson.annotations.SerializedName
+
+@Suppress("unused")
+data class Webhook(
+	val eventId: String,
+	val eventCreated: Long,
+	val storeId: Long,
+	val entityId: Long,
+	val eventType: String = "",
+	val data: Map<String, String> = emptyMap(),
+) {
+
+	enum class EventType {
+		@SerializedName("application.installed")
+		APPLICATION_INSTALLED,
+
+		@SerializedName("application.uninstalled")
+		APPLICATION_UNINSTALLED,
+
+		@SerializedName("application.subscription_status_changed")
+		APPLICATION_SUBSCRIPTION_STATUS_CHANGED,
+
+		@SerializedName("application.storage_changed")
+		APPLICATION_STORAGE_CHANGED,
+
+		@SerializedName("category.created")
+		CATEGORY_CREATED,
+
+		@SerializedName("category.deleted")
+		CATEGORY_DELETED,
+
+		@SerializedName("category.updated")
+		CATEGORY_UPDATED,
+
+		@SerializedName("customer.created")
+		CUSTOMER_CREATED,
+
+		@SerializedName("customer.deleted")
+		CUSTOMER_DELETED,
+
+		@SerializedName("customer.updated")
+		CUSTOMER_UPDATED,
+
+		@SerializedName("customer.personal_data_removal_request")
+		CUSTOMER_PERSONAL_DATA_REMOVAL_REQUEST,
+
+		@SerializedName("customer.personal_data_export_request")
+		CUSTOMER_PERSONAL_DATA_EXPORT_REQUEST,
+
+		@SerializedName("order.created")
+		ORDER_CREATED,
+
+		@SerializedName("order.deleted")
+		ORDER_DELETED,
+
+		@SerializedName("order.updated")
+		ORDER_UPDATED,
+
+		@SerializedName("product.created")
+		PRODUCT_CREATED,
+
+		@SerializedName("product.deleted")
+		PRODUCT_DELETED,
+
+		@SerializedName("product.updated")
+		PRODUCT_UPDATED,
+
+		@SerializedName("product_class.created")
+		PRODUCT_CLASS_CREATED,
+
+		@SerializedName("product_class.deleted")
+		PRODUCT_CLASS_DELETED,
+
+		@SerializedName("product_class.updated")
+		PRODUCT_CLASS_UPDATED,
+
+		@SerializedName("review.created")
+		REVIEW_CREATED,
+
+		@SerializedName("review.deleted")
+		REVIEW_DELETED,
+
+		@SerializedName("review.updated")
+		REVIEW_UPDATED,
+
+		@SerializedName("profile.updated")
+		PROFILE_UPDATED,
+
+		@SerializedName("profile.subscription_status_changed")
+		PROFILE_SUBSCRIPTION_STATUS_CHANGED,
+
+		@SerializedName("profile.personal_data_removal_request")
+		PROFILE_PERSONAL_DATA_REMOVAL_REQUEST,
+
+		@SerializedName("profile.personal_data_export_request")
+		PROFILE_PERSONAL_DATA_EXPORT_REQUEST,
+
+		@SerializedName("unfinished_order.created")
+		UNFINISHED_ORDER_CREATED,
+
+		@SerializedName("unfinished_order.deleted")
+		UNFINISHED_ORDER_DELETED,
+
+		@SerializedName("unfinished_order.updated")
+		UNFINISHED_ORDER_UPDATED,
+
+		@SerializedName("discount_coupon.created")
+		DISCOUNT_COUPON_CREATED,
+
+		@SerializedName("discount_coupon.deleted")
+		DISCOUNT_COUPON_DELETED,
+
+		@SerializedName("discount_coupon.updated")
+		DISCOUNT_COUPON_UPDATED,
+
+		@SerializedName("invoice.created")
+		INVOICE_CREATED,
+
+		@SerializedName("invoice.deleted")
+		INVOICE_DELETED,
+
+		@SerializedName("promotion.created")
+		PROMOTION_CREATED,
+
+		@SerializedName("promotion.deleted")
+		PROMOTION_DELETED,
+
+		@SerializedName("promotion.updated")
+		PROMOTION_UPDATED,
+	}
+
+}

src/main/kotlin/com/ecwid/apiclient/v3/dto/webhook/WebhooksUtils.kt

@@ -0,0 +1,32 @@
+package com.ecwid.apiclient.v3.dto.webhook
+
+import org.apache.commons.codec.binary.Base64
+import org.apache.commons.codec.digest.HmacAlgorithms
+import org.apache.commons.codec.digest.HmacUtils
+
+@Suppress("unused")
+object WebhooksUtils {
+
+    const val WEBHOOK_SIGNATURE_HEADER_NAME = "X-Ecwid-Webhook-Signature"
+
+    /**
+     * Webhook signature verification
+     * @param signature - webhook signature obtained from the X-Ecwid-Webhook-Signature header
+     * @param webhook - the webhook itself, for which you need to check the signature
+     * @param clientSecret - clientSecret of the application for which the webhook was sent
+     * @return true if the signature is valid
+     */
+	@JvmStatic
+	fun isSignatureValid(signature: String?, webhook: Webhook?, clientSecret: String): Boolean {
+        if (webhook == null || signature.isNullOrEmpty()) {
+			return false
+		}
+
+        val bt = HmacUtils(HmacAlgorithms.HMAC_SHA_256, clientSecret)
+            .hmac("${webhook.eventCreated}.${webhook.eventId}")
+        val result = Base64.encodeBase64String(bt)
+
+        return signature == result
+    }
+
+}