using System.Linq;
using Microsoft.Extensions.Logging;
using xCommons.Extensions;
using xExceptions.Constants;
using xIdentityModels.Configurations;
using xIds.Constants;
using xIds.Interfaces;

namespace xIds.Providers
{
    public class XIdentityMessageProvider : IXIdentityMessageProvider
    {
        //
        public string InviteMsg { get; set; }
        public string RegistrationApproveMsg { get; set; }
        public string RegisteredMsg { get; set; }
        public string VerificationCodeMsg { get; set; }
        public string ChangePasswordMsg { get; set; }
        public string PasswordChangedMsg { get; set; }
        public string NewDeviceLoggedInMsg { get; set; }

        private readonly ILogger<IXIdentityMessageProvider> logger;
        private readonly XIdentityConfiguration identityConfiguration;

        public XIdentityMessageProvider(
            ILogger<IXIdentityMessageProvider> logger,
            XIdentityConfiguration identityConfiguration
        )
        {
            this.logger = logger;
            this.identityConfiguration = identityConfiguration;
        }

        /// <summary>
        /// Determine All things is Ready or Not
        /// </summary>
        /// <returns></returns>
        public bool IsReady()
        {
            return !InviteMsg.IsNullOrEmpty() &&
                !RegistrationApproveMsg.IsNullOrEmpty() &&
                !RegisteredMsg.IsNullOrEmpty() &&
                !VerificationCodeMsg.IsNullOrEmpty() &&
                !ChangePasswordMsg.IsNullOrEmpty() &&
                !PasswordChangedMsg.IsNullOrEmpty() &&
                !NewDeviceLoggedInMsg.IsNullOrEmpty();
        }

        /// <summary>
        /// Retrieve a Translated Value Based on Given Lang
        /// </summary>
        /// <param name="resourceTitle"></param>
        /// <param name="lang"></param>
        /// <returns></returns>
        private string GetStringResource(string resourceTitle, string lang)
        {
            //
            var item = identityConfiguration.IdentityMessages
                .FirstOrDefault(sr =>
                    sr.Language.ToNormalString() == lang.ToNormalString() &&
                    sr.ResourceTitle.ToNormalString() == resourceTitle.ToNormalString());
            //
            if (item == null)
            {
                return null;
            }

            //     
            return item.TranslatedValue;
        }

        /// <summary>
        /// Prepare Helper Class and Fill Messages 
        /// with Specific Language
        /// </summary>
        /// <param name="lang"></param>
        public void PrepareMessages(string lang)
        {
            //
            InviteMsg = GetStringResource(IdentityMessagesKeys.InviteMsg, lang);
            RegisteredMsg = GetStringResource(IdentityMessagesKeys.RegisteredMsg, lang);
            ChangePasswordMsg = GetStringResource(IdentityMessagesKeys.ChangePasswordMsg, lang);
            PasswordChangedMsg = GetStringResource(IdentityMessagesKeys.PasswordChangedMsg, lang);
            VerificationCodeMsg = GetStringResource(IdentityMessagesKeys.VerificationCodeMsg, lang);
            NewDeviceLoggedInMsg = GetStringResource(IdentityMessagesKeys.NewDeviceLoggedInMsg, lang);
            RegistrationApproveMsg = GetStringResource(IdentityMessagesKeys.RegistrationApproveMsg, lang);

            //
            if (!IsReady())
            {
                XException.InvalidArgs.Throw();
            }
        }
    }
}