feat: support item record (#38)

README.md

@@ -138,6 +138,30 @@ ClickstreamAnalytics.recordEvent("testEvent", attributes)
 ClickstreamAnalytics.recordEvent("button_click")
 ```
 
+#### Record event with items
+
+You can add the following code to log an event with an item.
+
+**Note: Only pipelines from version 1.1+ can handle items with custom attribute.**
+
+```swift
+import Clickstream
+
+let attributes: ClickstreamAttribute = [
+    ClickstreamAnalytics.Item.ITEM_ID: "123",
+    ClickstreamAnalytics.Item.CURRENCY: "USD",
+    "event_category": "recommended"
+]
+
+let item_book: ClickstreamAttribute = [
+    ClickstreamAnalytics.Item.ITEM_ID: 123,
+    ClickstreamAnalytics.Item.ITEM_NAME: "Nature",
+    ClickstreamAnalytics.Item.ITEM_CATEGORY: "book",
+    ClickstreamAnalytics.Item.PRICE: 99.9
+]
+ClickstreamAnalytics.recordEvent("view_item", attributes, [item_book])
+```
+
 #### Add global attribute
 
 ```swift

Sources/Clickstream/AWSClickstreamPlugin+ClientBehavior.swift

@@ -45,6 +45,9 @@ extension AWSClickstreamPlugin {
             if let attributes = event.attribute {
                 clickstreamEvent.addAttribute(attributes)
             }
+            if let items = event.items {
+                clickstreamEvent.addItems(items)
+            }
 
             Task {
                 do {

Sources/Clickstream/ClickstreamAnalytics.swift

@@ -25,8 +25,11 @@ public enum ClickstreamAnalytics {
     /// - Parameters:
     ///   - eventName: the event name
     ///   - attributes: the event attributes
-    public static func recordEvent(_ eventName: String, _ attributes: ClickstreamAttribute) {
-        let event = BaseClickstreamEvent(name: eventName, attribute: attributes)
+    public static func recordEvent(_ eventName: String,
+                                   _ attributes: ClickstreamAttribute,
+                                   _ items: [ClickstreamAttribute] = [])
+    {
+        let event = BaseClickstreamEvent(name: eventName, attribute: attributes, items: items)
         Amplify.Analytics.record(event: event)
     }
 
@@ -79,11 +82,28 @@ public enum ClickstreamAnalytics {
     public static func disable() {
         Amplify.Analytics.disable()
     }
-
-
+
     /// Enable the SDK
     /// - Parameter userId: current userId, nil for logout
     public static func enable() {
         Amplify.Analytics.enable()
     }
+
+    /// ClickstreamAnalytics item attributes
+    public enum Item {
+        static let ITEM_ID = "id"
+        static let ITEM_NAME = "name"
+        static let LOCATION_ID = "location_id"
+        static let ITEM_BRAND = "brand"
+        static let CURRENCY = "currency"
+        static let PRICE = "price"
+        static let QUANTITY = "quantity"
+        static let CREATIVE_NAME = "creative_name"
+        static let CREATIVE_SLOT = "creative_slot"
+        static let ITEM_CATEGORY = "item_category"
+        static let ITEM_CATEGORY2 = "item_category2"
+        static let ITEM_CATEGORY3 = "item_category3"
+        static let ITEM_CATEGORY4 = "item_category4"
+        static let ITEM_CATEGORY5 = "item_category5"
+    }
 }

Sources/Clickstream/ClickstreamAttribute.swift

@@ -6,13 +6,15 @@
 //
 
 import Amplify
+import Foundation
 
 /// the attribute for Clickstream which support String, Int, Int64, Double and Bool
 public typealias ClickstreamAttribute = AnalyticsProperties
 
 typealias AttributeValue = AnalyticsPropertyValue
 /// for support Int64 attribute value
 extension Int64: AnalyticsPropertyValue {}
+extension Decimal: AnalyticsPropertyValue {}
 
 struct BaseClickstreamEvent: AnalyticsEvent {
     var properties: AnalyticsProperties?
@@ -23,14 +25,19 @@ struct BaseClickstreamEvent: AnalyticsEvent {
     /// Properties of the event
     var attribute: ClickstreamAttribute?
 
+    /// Items of the event
+    var items: [ClickstreamAttribute]?
+
     /// Initializer
     /// - Parameters:
     ///   - name: The name of the event
     ///   - attribute: Attribute of the event
     init(name: String,
-         attribute: ClickstreamAttribute? = nil)
+         attribute: ClickstreamAttribute? = nil,
+         items: [ClickstreamAttribute]? = nil)
     {
         self.name = name
         self.attribute = attribute
+        self.items = items
     }
 }

Sources/Clickstream/ClickstreamObjc.swift

@@ -30,8 +30,8 @@ import Foundation
     /// - Parameters:
     ///   - eventName: the event name
     ///   - attributes: the event attributes which type is NSDictionary
-    public static func recordEvent(_ eventName: String, _ attributes: NSDictionary) {
-        ClickstreamAnalytics.recordEvent(eventName, getAttributes(attributes))
+    public static func recordEvent(_ eventName: String, _ attributes: NSDictionary, _ items: [NSDictionary] = []) {
+        ClickstreamAnalytics.recordEvent(eventName, getAttributes(attributes), getItems(items))
     }
 
     /// Use this method to send events immediately
@@ -71,6 +71,15 @@ import Foundation
         try ClickstreamAnalytics.getClickstreamConfiguration()
     }
 
+
+    private static func getItems(_ items: [NSDictionary]) -> [ClickstreamAttribute] {
+        var resultItems: [ClickstreamAttribute] = []
+        for item in items {
+            resultItems.append(getAttributes(item))
+        }
+        return resultItems
+    }
+
     /// Disable the SDK
     public static func disable() {
         ClickstreamAnalytics.disable()

Sources/Clickstream/Dependency/Clickstream/Analytics/AnalyticsClient.swift

@@ -45,7 +45,10 @@ class AnalyticsClient: AnalyticsClientBehaviour {
     }
 
     func addGlobalAttribute(_ attribute: AttributeValue, forKey key: String) {
-        let eventError = Event.checkAttribute(currentNumber: globalAttributes.count, key: key, value: attribute)
+        let eventError = EventChecker.checkAttribute(
+            currentNumber: globalAttributes.count,
+            key: key,
+            value: attribute)
         if eventError.errorCode > 0 {
             recordEventError(eventError)
         } else {
@@ -54,7 +57,9 @@ class AnalyticsClient: AnalyticsClientBehaviour {
     }
 
     func addUserAttribute(_ attribute: AttributeValue, forKey key: String) {
-        let eventError = Event.checkUserAttribute(currentNumber: userAttributes.count, key: key, value: attribute)
+        let eventError = EventChecker.checkUserAttribute(
+            currentNumber: userAttributes.count,
+            key: key, value: attribute)
         if eventError.errorCode > 0 {
             recordEventError(eventError)
         } else {
@@ -115,7 +120,7 @@ class AnalyticsClient: AnalyticsClientBehaviour {
     }
 
     func checkEventName(_ eventName: String) -> Bool {
-        let eventError = Event.checkEventType(eventType: eventName)
+        let eventError = EventChecker.checkEventType(eventType: eventName)
         if eventError.errorCode > 0 {
             recordEventError(eventError)
             return false
@@ -139,7 +144,7 @@ class AnalyticsClient: AnalyticsClientBehaviour {
         try eventRecorder.save(event)
     }
 
-    func recordEventError(_ eventError: Event.EventError) {
+    func recordEventError(_ eventError: EventChecker.EventError) {
         Task {
             do {
                 let event = createEvent(withEventType: Event.PresetEvent.CLICKSTREAM_ERROR)

Sources/Clickstream/Dependency/Clickstream/Analytics/AnalyticsPropertiesModel.swift

@@ -7,6 +7,7 @@
 
 protocol AnalyticsPropertiesModel {
     func addAttribute(_ attribute: AttributeValue, forKey key: String)
+    func addItem(_ item: ClickstreamAttribute)
 }
 
 extension AnalyticsPropertiesModel {
@@ -15,4 +16,10 @@ extension AnalyticsPropertiesModel {
             addAttribute(value, forKey: key)
         }
     }
+
+    func addItems(_ items: [ClickstreamAttribute]) {
+        for item in items {
+            addItem(item)
+        }
+    }
 }

Sources/Clickstream/Dependency/Clickstream/Event/ClickstreamEvent.swift

@@ -19,6 +19,7 @@ class ClickstreamEvent: AnalyticsPropertiesModel {
     let timestamp: Date.Timestamp
     let session: Session?
     private(set) lazy var attributes: [String: AttributeValue] = [:]
+    private(set) lazy var items: [ClickstreamAttribute] = []
     private(set) lazy var userAttributes: [String: Any] = [:]
     let systemInfo: SystemInfo
     let netWorkType: String
@@ -43,7 +44,7 @@ class ClickstreamEvent: AnalyticsPropertiesModel {
     }
 
     func addAttribute(_ attribute: AttributeValue, forKey key: String) {
-        let eventError = Event.checkAttribute(currentNumber: attributes.count, key: key, value: attribute)
+        let eventError = EventChecker.checkAttribute(currentNumber: attributes.count, key: key, value: attribute)
         if eventError.errorCode > 0, key != Event.ReservedAttribute.EXCEPTION_STACK {
             attributes[Event.ReservedAttribute.ERROR_CODE] = eventError.errorCode
             attributes[Event.ReservedAttribute.ERROR_MESSAGE] = eventError.errorMessage
@@ -52,6 +53,20 @@ class ClickstreamEvent: AnalyticsPropertiesModel {
         }
     }
 
+    func addItem(_ item: ClickstreamAttribute) {
+        let checkResult = EventChecker.checkItem(currentNumber: items.count, item: item)
+        let eventError = checkResult.eventError
+        let resultItem = checkResult.resultItem
+        if eventError.errorCode > 0 {
+            attributes[Event.ReservedAttribute.ERROR_CODE] = eventError.errorCode
+            attributes[Event.ReservedAttribute.ERROR_MESSAGE] = eventError.errorMessage
+        } else {
+            if !resultItem.isEmpty {
+                items.append(resultItem)
+            }
+        }
+    }
+
     func addGlobalAttribute(_ attribute: AttributeValue, forKey key: String) {
         attributes[key] = attribute
     }
@@ -91,19 +106,12 @@ class ClickstreamEvent: AnalyticsPropertiesModel {
         event["app_version"] = systemInfo.appVersion
         event["app_package_name"] = systemInfo.appPackgeName
         event["app_title"] = systemInfo.appTitle
+        if !items.isEmpty {
+            event["items"] = items
+        }
         event["user"] = userAttributes
         event["attributes"] = getAttributeObject(from: attributes)
-        return getJsonStringFromObject(jsonObject: event)
-    }
-
-    func getJsonStringFromObject(jsonObject: JsonObject) -> String {
-        do {
-            let jsonData = try JSONSerialization.data(withJSONObject: jsonObject, options: [.sortedKeys])
-            return String(data: jsonData, encoding: .utf8) ?? ""
-        } catch {
-            log.error("Error serializing dictionary to JSON: \(error.localizedDescription)")
-        }
-        return ""
+        return event.toJsonString()
     }
 
     private func getAttributeObject(from dictionary: AnalyticsProperties) -> JsonObject {