using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Web.Core;
using Patcher.Data.Patch;
using Patcher.DB;
using System.IO;

namespace Patcher
{
	class Context
	{

		private readonly IUpdateParams updateParams;
		
		public List<PatchId> getPatchesList() {
			return (from patchId in this.updateParams.getPatchesList() orderby patchId ascending select patchId).ToList();
		}

		public readonly IDBTraits DbDriver;

		public readonly IInteractiveConsole console;

		public string EnvironmentName {
			get {
				return this.updateParams.EnvironmentName;
			}
		}

		public string PatchesTable {
			get {
				return this.updateParams.PatchesTable;
			}
		}

		public Stream loadPatch(PatchId patchId) {
			return this.updateParams.loadPatch(patchId);
		}

		public Transaction CreateTransaction() {
			return TransactionFactory.Create(this.updateParams.DbDriverName, this.updateParams.ConnectionString);
		}

		public Context(IUpdateParams updateParams, IInteractiveConsole console) {
			this.updateParams = updateParams;
			this.DbDriver = DBTraitsFactory.GetTraits(updateParams.DbDriverName);
			this.console = console;
		}

	}

	class Logger : ILogger {

		public static readonly ILogger instance = new Logger();

		private readonly StreamWriter writer;

		private readonly object locker = new object();

		private Logger() {
			this.writer = new StreamWriter("C:\\Program Files\\FLocal\\main\\debug\\data\\Logs\\" + DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss") + ".patcher.txt");
		}

		void ILogger.Log(string message) {
			lock(this.locker) {
				this.writer.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff") + ": " + message);
				this.writer.Flush();
			}
		}

	}

}