using System;
using System.Web.Mvc;
using MileageTraker.Web.DAL;
using MileageTraker.Web.Models;
using MileageTraker.Web.Utility;
using MileageTraker.Web.ViewModels;
using MileageTraker.Web.ViewModels.CreateLog;

namespace MileageTraker.Web.Controllers
{
	public class CreateLogController : ControllerBase
	{
		private const string CookieKeyEmployeename = "mr_employeeName";
		private const string CookeNameVehicleid = "mr_vehicleId";
		private const string CookieKeyLogtype = "mr_logType";
		private readonly DataService _dataService = new DataService();

		public ViewResult Index()
		{
			var createLogModel = NewCreateLogModel();

			return View(createLogModel);
		}

		[HttpPost]
		public ActionResult Index(CreateLogViewModel model)
		{
			if (!ModelState.IsValid)
			{
				ViewBag.updateError = "Create Failure";
				if (model.LogType == null) // WTF why doesn't the model binder get this
					model.LogType = new MileageLogTypeWrapper();
				return View(model);
			}

			var confirmCreateLogViewModel = new ConfirmCreateLogViewModel(model);

			return View("Confirm", confirmCreateLogViewModel);
		}

		[HttpParamAction]
		[HttpPost]
		public ViewResult Edit(CreateLogViewModel model)
		{
			return View("Index", model);
		}

		[HttpParamAction]
		[HttpPost]
		[ActionLog]
		public ViewResult Confirm(CreateLogViewModel model)
		{
			if (ModelState.IsValid)
			{
				SetCookieValue(CookieKeyLogtype, model.LogType.Enum.ToString());
				SetCookieValue(CookieKeyEmployeename, model.EmployeeName);
				SetCookieValue(CookeNameVehicleid, model.VehicleId);

				// Save the new log
				var log = model.GetLog();
				log.Source = HttpContext.Request.Url.AbsolutePath;
				log.UserHostAddress = HttpContext.Request.UserHostAddress;
				log.UserAgent = HttpContext.Request.UserAgent;
				_dataService.AddLog(log);
				return View("Success", model);
			}

			return View("Index", model);
		}

		public PartialViewResult RecentLogs(string employeeName)
		{
			var logs = _dataService.GetRecentLogsByEmployee(employeeName);
			ViewData["employeeName"] = employeeName;
			return PartialView(logs);
		}

		private CreateLogViewModel NewCreateLogModel()
		{
			MileageLogType logType;
			Enum.TryParse(GetCookieValue(CookieKeyLogtype), true, out logType);
			var name = GetCookieValue(CookieKeyEmployeename);
			var vehicleId = GetCookieValue(CookeNameVehicleid);

			return new CreateLogViewModel
			{
				LogType = logType,
				EmployeeName = name,
				VehicleId = vehicleId,
				Date = DateTime.Today
			};
		}

		private string GetCookieValue(string key)
		{
			return
				HttpContext.Request.Cookies[key] != null
				? HttpContext.Request.Cookies[key].Value
				: null;
		}

		private void SetCookieValue(string key, string value)
		{
			var cookies = HttpContext.Response.Cookies;
			cookies[key].Value = value;
			cookies[key].Expires = DateTime.MaxValue;
		}
	}
}