using System;
using System.ComponentModel.DataAnnotations;
using System.Net;
using System.Web.Mvc;
using Portoa.Persistence;
using Portoa.Validation.DataAnnotations;
using Portoa.Web.Controllers;
using Portoa.Web.Results;
using VideoGameQuotes.Api;
using VideoGameQuotes.Api.Persistence;
using VideoGameQuotes.Web.Models;
using VideoGameQuotes.Web.Security;

namespace VideoGameQuotes.Web.Controllers {

	public class UserController : Controller {
		private readonly IUserService userService;

		public UserController(IUserService userService) {
			this.userService = userService;
		}

		[HttpPost, VerifyUser(Group = UserGroup.Admin)]
		public ActionResult Delete([GreaterThanZero]int id) {
			if (!ModelState.IsValid) {
				return Json(this.CreateJsonErrorResponse("Invalid user id"));
			}

			try {
				userService.Delete(id);
				return Json(this.CreateJsonResponse());
			} catch (Exception e) {
				return Json(this.CreateJsonErrorResponse(e));
			}
		}

		[HttpPost, VerifyUser(Group = UserGroup.Admin)]
		public ActionResult Ban([GreaterThanZero]int id) {
			if (!ModelState.IsValid) {
				return Json(this.CreateJsonErrorResponse("Invalid user id"));
			}

			try {
				userService.Delete(id);
				return Json(this.CreateJsonResponse());
			} catch (Exception e) {
				return Json(this.CreateJsonErrorResponse(e));
			}
		}

		[HttpGet, VerifyUser(Group = UserGroup.Admin)]
		public ActionResult Edit([Required]string usernameOrIp) {
			if (!ModelState.IsValid) {
				return GetUsernameNotFoundResult(usernameOrIp);
			}

			var user = userService.FindByUsernameOrIp(usernameOrIp);
			if (user == null) {
				return GetUsernameNotFoundResult(usernameOrIp);
			}

			return View(new EditUserModel { Id = user.Id, Username = user.Username, IpAddress = user.IpAddress, Group = user.Group });
		}

		[HttpPost, VerifyUser(Group = UserGroup.Admin)]
		public ActionResult Edit(EditUserModel model) {
			if (!ModelState.IsValid) {
				return View(model);
			}

			try {
				var user = userService.FindById(model.Id);
				user.Username = model.Username;
				user.IpAddress = model.IpAddress;
				user.Group = model.Group;
				user = userService.Save(user);
				return RedirectToAction("Edit", new { usernameOrIp = user.Username ?? user.IpAddress });
			} catch (EntityNotFoundException) {
				ModelState.AddModelError("Id", "Invalid user ID");
				return View(model);
			}
		}

		private ActionResult GetUsernameNotFoundResult(string usernameOrIp) {
			return new StatusOverrideResult(View("InvalidUsername", new InvalidUsernameModel { UsernameOrIp = usernameOrIp })) {
				StatusCode = HttpStatusCode.NotFound
			};
		}

	}
}