using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Configuration;
using System.Linq;

namespace Neo.Afx.Services
{
    public class ServiceConfigurations
    {
        readonly ServiceConfigurationSection _services;

        public ServiceConfigurations()
        {
            _services = new ServiceConfigurationSection();
        }

        #region GetSystemUserID

        public long GetSystemUserID()
        {
            long id;
            if(!long.TryParse(ConfigurationManager.AppSettings["SystemUserID"], out id))
            {
                return -1;
            }

            return id;
        }

        #endregion

        #region GetSystemUserEmail

        public string GetSystemUserEmail()
        {
            return ConfigurationManager.AppSettings["SystemUserEmail"];
        }

        #endregion

        #region GetServices

        public IEnumerable<Service> GetServices()
        {
            return (from service in _services.GetServices().Cast<ServiceElement>()
                    let serviceSettings = ConfigurationManager.GetSection(service.SectionName) as NameValueCollection
                    where serviceSettings != null
                    select new Service
                    {
                        ServiceID = -1,
                        ServiceName = service.Name,
                        PollFrequency = new PollFrequency
                        {
                            PollFrequencyID = (short)service.PollFrequency
                        },
                        PollTime = service.PollTime.ToString(),
                        ServiceTypeName = service.Type,
                        ServiceSettings = serviceSettings.AllKeys.Select(s => new ServiceSetting
                        {
                            SettingKey = s,
                            SettingValue = serviceSettings[s]
                        }).ToList()
                    }).ToList();
        }

        #endregion

        #region UpdateRunStatus

        /// <summary>
        /// Updates the service run status.
        /// </summary>
        /// <param name="serviceName">The service ID; may be <code>null</code>.</param>
        /// <param name="runDate">The run date.</param>
        /// <param name="traceInfo">The trace info; may be <code>null</code>.</param>
        public void UpdateRunStatus(string serviceName, DateTime runDate, string traceInfo)
        {
            System.Diagnostics.Trace.WriteLine(
                String.Format("{0} {1} - {2}", DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss"), serviceName, traceInfo));
        }

        #endregion
    }
}