using System;
using System.Collections.Generic;
using Nop.Core;
using Nop.Core.Domain.Customers;
using Nop.Core.Domain.Logging;

namespace Nop.Services.Logging
{
    /// <summary>
    /// Null logger
    /// </summary>
    public partial class NullLogger : ILogger
    {
        /// <summary>
        /// Determines whether a log level is enabled
        /// </summary>
        /// <param name="level">Log level</param>
        /// <returns>Result</returns>
        public bool IsEnabled(LogLevel level)
        {
            return false;
        }

        /// <summary>
        /// Deletes a log item
        /// </summary>
        /// <param name="log">Log item</param>
        public void DeleteLog(Log log)
        {
        }

        /// <summary>
        /// Clears a log
        /// </summary>
        public void ClearLog()
        {
        }

        /// <summary>
        /// Gets all log items
        /// </summary>
        /// <param name="fromUtc">Log item creation from; null to load all records</param>
        /// <param name="toUtc">Log item creation to; null to load all records</param>
        /// <param name="message">Message</param>
        /// <param name="logLevel">Log level; null to load all records</param>
        /// <param name="pageIndex">Page index</param>
        /// <param name="pageSize">Page size</param>
        /// <returns>Log item collection</returns>
        public IPagedList<Log> GetAllLogs(DateTime? fromUtc, DateTime? toUtc,
            string message, LogLevel? logLevel, int pageIndex, int pageSize)
        {
            return new PagedList<Log>(new List<Log> (), pageIndex, pageSize);
        }

        /// <summary>
        /// Gets a log item
        /// </summary>
        /// <param name="logId">Log item identifier</param>
        /// <returns>Log item</returns>
        public Log GetLogById(int logId)
        {
            return null;
        }
        
        /// <summary>
        /// Inserts a log item
        /// </summary>
        /// <param name="logLevel">Log level</param>
        /// <param name="shortMessage">The short message</param>
        /// <param name="fullMessage">The full message</param>
        /// <param name="customer">The customer to associate log record with</param>
        /// <returns>A log item</returns>
        public Log InsertLog(LogLevel logLevel, string shortMessage, string fullMessage = "", Customer customer = null)
        {
            return null;
        }
    }
}
