//
// NotifyJob.cs
//
// Author:
//       Carsten Sonne Larsen <cs@innolan.dk>
//
// Copyright (c) 2013 Carsten Sonne Larsen
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System.Collections.Generic;
using System.Globalization;
using System.Net;
using System.Net.Mail;
using System.Text;
using Ntp.Analyzer.Config;
using Ntp.Analyzer.Config.Root;
using Ntp.Analyzer.Log;
using Ntp.Process;

namespace Ntp.Analyzer.Process.Description
{
    public sealed class NotifyJob : JobDescription
    {
        private readonly SmtpClient client;
        private readonly NotifyConfiguration config;
        private readonly string configFile;
        private readonly List<Ntp.Process.Job> jobs;
        private readonly int pid;

        public NotifyJob (
            NotifyConfiguration config,
            LogBase log,
            int pid,
            string configFile
        )
            : base(config, log)
        {
            this.config = config;
            this.pid = pid;
            this.configFile = configFile;
            jobs = new List<Ntp.Process.Job> ();

            client = new SmtpClient (config.SmptServer, config.SmtpPort);

            if (config.SmptUser != null) {
                client.Credentials = new NetworkCredential(
                    config.SmptUser, config.SmptPass ?? string.Empty);
            }

            client.EnableSsl = config.EnableSsl;
        }

        public override bool SingleThread {
            get { return false; }
        }

        public override string JobType {
            get { return "Notify mail"; }
        }

        public override int Priority {
            get { return 99; }
        }

        /// <summary>
        /// Sets the job list to be monitored.
        /// </summary>
        /// <param name="jobs">Scheduled jobs.</param>
        internal void SetJobList (IEnumerable<Ntp.Process.Job> jobs)
        {
            this.jobs.AddRange (jobs);
        }

        protected override void InternalExecute ()
        {
            MailMessage message = new MailMessage (
                config.Mail,
                config.Sender,
                config.Subject,
                BuildContent ()
            );

            client.Send (message);
        }

        /// <summary>
        /// Builds the message content.
        /// </summary>
        /// <returns>The content.</returns>
        private string BuildContent ()
        {
            StringBuilder builder = new StringBuilder ();

            builder.AppendLine ("List of running jobs in NTP Analyzer");

            builder.Append (Billboard.Jobs (jobs));

            builder.Append ("Using configuration: ");
            builder.AppendLine (configFile);

            builder.Append ("Running with PID: ");
            builder.AppendLine (pid.ToString (CultureInfo.InvariantCulture));

            return builder.ToString ();
        }
    }
}