/*
 * Copyright 2015-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 * 
 *  http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

using System.Collections;
using System;
using Amazon.MobileAnalytics.MobileAnalyticsManager.Internal;
using System.Globalization;

namespace Amazon.MobileAnalytics.MobileAnalyticsManager
{
    /// <summary>
    /// Represents purchase event in your application. The event attribute must be set by user.
    /// <example>
    /// The example below shows how to use MonetizationEvent
    /// <code>
    ///     MonetizationEvent monetizationEvent = new MonetizationEvent();
    ///
    ///     monetizationEvent.Quantity = 3.0;
    ///     monetizationEvent.ItemPrice = 1.99;
    ///     monetizationEvent.ProductId = "ProductId123";
    ///     monetizationEvent.ItemPriceFormatted = "$1.99";
    ///     monetizationEvent.Store = "Apple";
    ///     monetizationEvent.TransactionId = "TransactionId123";
    ///     monetizationEvent.Currency = "USD";     
    ///
    ///     analyticsManager.RecordEvent(monetizationEvent);
    /// </code>  
    /// </example> 
    /// </summary>
    public class MonetizationEvent : CustomEvent 
    {
        // event type
        private const string PURCHASE_EVENT_NAME = "_monetization.purchase";
        
        // metric name
        private const string PURCHASE_EVENT_QUANTITY_METRIC = "_quantity";
        private const string PURCHASE_EVENT_ITEM_PRICE_METRIC = "_item_price";
        
        // attribute name
        private const string PURCHASE_EVENT_PRODUCT_ID_ATTR = "_product_id";
        private const string PURCHASE_EVENT_ITEM_PRICE_FORMATTED_ATTR = "_item_price_formatted";
        private const string PURCHASE_EVENT_STORE_ATTR = "_store";
        private const string PURCHASE_EVENT_TRANSACTION_ID_ATTR = "_transaction_id";
        private const string PURCHASE_EVENT_CURRENCY_ATTR = "_currency";

        /// <summary>
        /// Constructor of <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.MonetizationEvent"/>
        /// </summary>
        public MonetizationEvent() : base(PURCHASE_EVENT_NAME)
        {
        }
        
        // metrics
        
        /// <summary>
        /// Sets the quantity.
        /// </summary>
        /// <value>The quantity. For example, 1.0 </value>
        public double? Quantity { get;set; }
        
        /// <summary>
        /// Sets the item price.
        /// </summary>
        /// <value>The item price. For example, 3.0 </value>
        public double? ItemPrice { get;set; }
        
        // attributes

        /// <summary>
        /// Sets the product identifier.
        /// </summary>
        /// <value>The product identifier. For example, ProductId123.</value>
        public string ProductId { get;set; }

        /// <summary>
        /// Sets the item price formatted.
        /// </summary>
        /// <value>The item price formatted. For example, $1.99 </value>
        public string ItemPriceFormatted { get;set; }
        
        /// <summary>
        /// Sets the store.
        /// </summary>
        /// <value>The store. For example, AppStore.</value>
        public string Store { get;set; }
        
        /// <summary>
        /// Sets the transaction identifier.
        /// </summary>
        /// <value>The transaction identifier. For example, TransactionId123.</value>
        public string TransactionId { get;set; }
        
        /// <summary>
        /// Sets the currency.
        /// </summary>
        /// <value>The currency.</value>
        public string Currency { get;set; }
        
        /// <summary>
        /// Converts to mobile analytics model event. <see cref="Amazon.MobileAnalytics.Model.Event"/>
        /// </summary>
        /// <returns>The to mobile analytics model event.</returns>
        /// <param name="session">Session.</param>
        internal override Amazon.MobileAnalytics.Model.Event ConvertToMobileAnalyticsModelEvent(Amazon.MobileAnalytics.MobileAnalyticsManager.Internal.Session session)
        {
            if(Quantity != null)
            {
                this.AddMetric(PURCHASE_EVENT_QUANTITY_METRIC,Convert.ToDouble(Quantity, CultureInfo.InvariantCulture));
            }
            
            if(ItemPrice != null)
            {
                this.AddMetric(PURCHASE_EVENT_ITEM_PRICE_METRIC, Convert.ToDouble(ItemPrice, CultureInfo.InvariantCulture));
            }
            
            if(!string.IsNullOrEmpty(ProductId))
            {
                this.AddAttribute(PURCHASE_EVENT_PRODUCT_ID_ATTR,ProductId);
            }
            
            if(!string.IsNullOrEmpty(ItemPriceFormatted))
            {
                this.AddAttribute(PURCHASE_EVENT_ITEM_PRICE_FORMATTED_ATTR,ItemPriceFormatted);
            }
            
            if(!string.IsNullOrEmpty(Store))
            {
                this.AddAttribute(PURCHASE_EVENT_STORE_ATTR,Store);
            }
            
            if(!string.IsNullOrEmpty(TransactionId))
            {
                this.AddAttribute(PURCHASE_EVENT_TRANSACTION_ID_ATTR,TransactionId);
            }
            
            if(!string.IsNullOrEmpty(Currency))
            {
                this.AddAttribute(PURCHASE_EVENT_CURRENCY_ATTR,Currency);
            }
            
            return base.ConvertToMobileAnalyticsModelEvent(session);
        }

    }

}