using Blazored.LocalStorage;
using Blazored.SessionStorage;
using NLog;

namespace SHERPA.BBM.UI.Data
{
    public class MessageService
    {
        #region Public Constructors

        public MessageService(ILocalStorageService genLocalStorage, ISessionStorageService sessStore)
        {
            localStore = genLocalStorage;
            sessionStore = sessStore;
        }

        #endregion Public Constructors

        #region Public Events

        /// <summary>
        /// Evento hide ricerca
        /// </summary>
        public event Action? EA_HideSearch;

        /// <summary>
        /// Evento aggiornamento ricerca
        /// </summary>
        public event Action? EA_SearchUpdated;

        /// <summary>
        /// Evento show ricerca
        /// </summary>
        public event Action? EA_ShowSearch;

        /// <summary>
        /// Evento modificata head pagina
        /// </summary>
        public event Action? HeadChanged;

        #endregion Public Events

        #region Public Properties

        /// <summary>
        /// Valore ricerca corrente
        /// </summary>
        public string SearchVal
        {
            get => searchVal;
            set
            {
                if (searchVal != value || string.IsNullOrEmpty(value))
                {
                    searchVal = value;

                    if (EA_SearchUpdated != null)
                    {
                        EA_SearchUpdated?.Invoke();
                    }
                }
            }
        }

        public bool ShowSearch
        {
            get => showSearch;
            set
            {
                if (showSearch != value)
                {
                    showSearch = value;
                    if (showSearch)
                    {
                        if (EA_ShowSearch != null)
                        {
                            EA_ShowSearch?.Invoke();
                        }
                    }
                    else
                    {
                        if (EA_HideSearch != null)
                        {
                            EA_HideSearch?.Invoke();
                        }
                    }
                }
            }
        }

        #endregion Public Properties

        #region Public Methods

        public void NotifyHeadChanged() => HeadChanged?.Invoke();

        /// <summary>
        /// Svuota localstorage (clear)
        /// </summary>
        /// <returns></returns>
        public async Task<bool> StoreLocalClear()
        {
            bool answ = false;
            try
            {
                await localStore.ClearAsync();
                answ = true;
            }
            catch (Exception ex)
            {
                Log.Error($"Eccezione in StoreLocalClear{Environment.NewLine}{ex}");
            }
            return answ;
        }

        /// <summary>
        /// Restituisce il valore richiesto da localstorage
        /// </summary>
        /// <param name="sKey">Chiave</param>
        /// <returns></returns>
        public async Task<string> StoreLocalGet(string sKey)
        {
            string answ = "";
            var result = await localStore.GetItemAsync<string>(sKey);
            if (result != null)
            {
                answ = result;
            }
            return answ;
        }

        /// <summary>
        /// Scrive il valore nel localstorage
        /// </summary>
        /// <param name="sKey">Chiave</param>
        /// <param name="sVal">Valore associato</param>
        /// <returns></returns>
        public async Task<bool> StoreLocalSet(string sKey, string sVal)
        {
            bool answ = false;
            try
            {
                await localStore.SetItemAsStringAsync(sKey, sVal);
                answ = true;
            }
            catch (Exception ex)
            {
                Log.Error($"Eccezione in StoreLocalSet{Environment.NewLine}{ex}");
            }
            return answ;
        }

        /// <summary>
        /// Svuota sessionstorage (clear)
        /// </summary>
        /// <returns></returns>
        public async Task<bool> StoreSessClear()
        {
            bool answ = false;
            try
            {
                await sessionStore.ClearAsync();
                answ = true;
            }
            catch (Exception ex)
            {
                Log.Error($"Eccezione in StoreLocalClear{Environment.NewLine}{ex}");
            }
            return answ;
        }

        /// <summary>
        /// Restituisce il valore richiesto da sessionstorage
        /// </summary>
        /// <param name="sKey">Chiave</param>
        /// <returns></returns>
        public async Task<string> StoreSessGet(string sKey)
        {
            string answ = "";
            var result = await sessionStore.GetItemAsync<string>(sKey);
            if (result != null)
            {
                answ = result;
            }
            return answ;
        }

        /// <summary>
        /// Scrive il valore nel sessionstorage (tab)
        /// </summary>
        /// <param name="sKey">Chiave</param>
        /// <param name="sVal">Valore associato</param>
        /// <returns></returns>
        public async Task<bool> StoreSessSet(string sKey, string sVal)
        {
            bool answ = false;
            try
            {
                await sessionStore.SetItemAsStringAsync(sKey, sVal);
                answ = true;
            }
            catch (Exception ex)
            {
                Log.Error($"Eccezione in StoreSessSet{Environment.NewLine}{ex}");
            }
            return answ;
        }

        /// <summary>
        /// Cerca un parametro utente salvato (se presente) e restituisce, se non trova restituisce ""
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public string UsrParamGet(string key)
        {
            string answ = "";
            if (userCurrParams.ContainsKey(key))
            {
                answ = userCurrParams[key];
            }
            return answ;
        }

        /// <summary>
        /// Cerca un parametro utente salvato (se presente) e restituisce, se non trova restituisce 0
        /// </summary>
        /// <param name="key"></param>
        /// <param name="nullVal">Valore da restituire se NON trovato</param>
        /// <returns></returns>
        public int UsrParamGetUInt(string key, int nullVal)
        {
            int answ = nullVal;
            var sVal = UsrParamGet(key);
            if (!string.IsNullOrEmpty(sVal))
            {
                int.TryParse(sVal, out answ);
            }
            return answ;
        }

        /// <summary>
        /// Upsert di un parametro utente
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public string UsrParamSet(string key, string value)
        {
            string answ = "";
            if (userCurrParams.ContainsKey(key))
            {
                userCurrParams[key] = value;
            }
            else
            {
                userCurrParams.Add(key, value);
            }
            return answ;
        }

        #endregion Public Methods

        #region Protected Properties

        protected ILocalStorageService localStore { get; set; } = null!;

        protected ISessionStorageService sessionStore { get; set; } = null!;

        #endregion Protected Properties

        #region Protected Methods

        protected void reportSearch()
        {
            if (EA_SearchUpdated != null)
            {
                EA_SearchUpdated?.Invoke();
            }
        }

        #endregion Protected Methods

        #region Private Fields

        private Logger Log = LogManager.GetCurrentClassLogger();

        private string searchVal = "";

        private bool showSearch;

        /// <summary>
        /// Dizionario parametri utente (in memoria x sessione utente)
        /// </summary>
        private Dictionary<string, string> userCurrParams = new Dictionary<string, string>();

        #endregion Private Fields
    }
}