using System;
using System.Collections.Generic;

namespace Vinno.vCloud.Common.License.Licenses
{
   public static class LicenseFileHelper
    {
        /// <summary>
        /// used'$'when saving File 
        /// </summary>
        private static char separator = '$';
        /// <summary>
        /// Get text from Lincese
        /// </summary>
        /// <param name="lincese"></param>
        /// <returns></returns>
        public static string LinceseToFile(License lincese)
        {
            string text = string.Empty;
            string expirationUtcDatetext = "ExpirationUtcDate=" + lincese.ExpirationUtcDate;
            text += expirationUtcDatetext + separator;
            string maxAccountCounttext = "MaxAccountCount=" + lincese.MaxAccountCount;
            text += maxAccountCounttext + separator;
            string maxUsCounttext = "MaxUsCount=" + lincese.MaxUsCount;
            text += maxUsCounttext + separator;
            string maxDiskSpacetext = "MaxDiskSpace=" + lincese.MaxDiskSpace;
            text += maxDiskSpacetext + separator;
            string idtext = "Identification=" + lincese.Identification;
            text += idtext + separator;
            string funItemValue = "FunctionalItemValue=" + lincese.FunctionalItemValue;
            text += funItemValue + separator;
            string asskey = "AssociationKey=" + lincese.AssociationKey;
            text += asskey + separator;
            string useVersionValue = "LicenseType=" + lincese.LicenseType.ToString();
            text += useVersionValue + separator;
            string lId = "LicenseId=" + lincese.LicenseId;
            text += lId + separator;
            string customerName = "CustomerName=" + lincese.CustomerName;
            text += customerName + separator;
            string MachineId = "MachineId=" + lincese.MachineId;
            text += MachineId + separator;
            return text;
        }
        /// <summary>
        /// Get License from text file
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        internal static License FromFile(string text)
        {
            License license = new License();
            var stringlist = text.Split(separator);
            var dict = new Dictionary<string, string>();
            foreach (var s in stringlist)
            {
                var arry = s.Split('=');
                if (arry.Length > 1)
                {
                    dict.Add(arry[0], arry[1]);
                }
                if (arry.Length == 1)
                {
                    dict.Add(arry[0], "");
                }

            }
            var properties = license.GetType().GetProperties();
            foreach (var propertyInfo in properties)
            {
                dict.TryGetValue(propertyInfo.Name, out var value);
                if (string.IsNullOrEmpty(value)) continue;
                object obj;
                switch (propertyInfo.Name)
                {
                    case "MaxUsCount":
                        obj = Convert.ToInt32(value);
                        break;
                    case "ExpirationDay":
                        obj = Convert.ToInt32(value);
                        break;
                    case "ExpirationUtcDate":
                        obj = Convert.ToDateTime(value);
                        break;
                    case "MaxAccountCount":
                        obj = Convert.ToInt32(value);
                        break;
                    case "MaxDiskSpace":
                        obj = Convert.ToInt32(value);
                        break;
                    case "LicenseType":
                        obj = Enum.Parse(typeof(LicenseType), value);
                        break;
                    case "Identification":
                        obj = value.ToString();
                        break;
                    case "FunctionalItemValue":
                        obj = value.ToString();
                        break;
                    case "AssociationKey":
                        obj = value.ToString();
                        break;
                    case "UseVersionItemValue":
                        obj = value.ToString();
                        break;
                    case "LicenseId":
                        obj = value.ToString();
                        break;
                    case "CustomerName":
                        obj = value.ToString();
                        break;
                    case "MachineId":
                        obj = value.ToString();
                        break;
                    default:
                        obj = value;
                        break;

                }
                propertyInfo.SetValue(license, obj);
            }
            return license;
        }
        /// <summary>
        /// Get text from  StartupLicnese
        /// </summary>
        /// <param name="lincese">StartupLicnese object</param>
        /// <returns></returns>
        internal static string StartupLicneseToFile(StartupLicnese lincese)
        {
            return "FirstStartupUtcDate=" + lincese.FirstStartupUtcDate;
        }
        /// <summary>
        /// Get StartupLicnese from text File
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        internal static StartupLicnese StartupLicneseFromFile(string text)
        {
            var license = new StartupLicnese();
            var stringlist = text.Split(separator);
            var dict = new Dictionary<string, string>();
            foreach (var s in stringlist)
            {
                var arry = s.Split('=');
                if (arry.Length > 1)
                {
                    dict.Add(arry[0], arry[1]);
                }
                if (arry.Length == 1)
                {
                    dict.Add(arry[0], "");
                }

            }
            var properties = license.GetType().GetProperties();
            foreach (var propertyInfo in properties)
            {
                dict.TryGetValue(propertyInfo.Name, out var value);
            
                if (string.IsNullOrEmpty(value)) continue;
                object obj;
                switch (propertyInfo.Name)
                {
                    case "FirstStartupUtcDate":
                        obj = Convert.ToDateTime(value);
                        break;
                    default:
                        obj = value;
                        break;

                }
                propertyInfo.SetValue(license, obj);
            }
            return license;
        }
    }
 }