using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Localization;

using PrivaPub.ClientModels;
using PrivaPub.ClientModels.Resources;
using PrivaPub.ClientModels.User;
using PrivaPub.Extensions;
using PrivaPub.Models.User;
using PrivaPub.Resources;
using PrivaPub.Services;
using PrivaPub.StaticServices;

using System.ComponentModel.DataAnnotations;

namespace PrivaPub.Controllers.ClientToServer
{
	[ApiController,
		Route("clientapi/user")]
	public class RootUserController : ControllerBase
	{
		readonly IRootUsersService UsersService;
		readonly AuthTokenManager AuthTokenManager;
		readonly ILogger<RootUserController> Logger;
		readonly IStringLocalizer Localizer;

		public RootUserController(IRootUsersService usersService,
				AuthTokenManager authTokenManager,
				IStringLocalizer<GenericRes> localizer,
				ILogger<RootUserController> logger)
		{
			UsersService = usersService;
			AuthTokenManager = authTokenManager;
			Localizer = localizer;
			Logger = logger;
		}

		#region User endpoints

		[HttpPost, Route("/clientapi/user/signup"), Authorize(Policy = Policies.IsUser), AllowAnonymous]
		public async Task<IActionResult> SignUp(LoginForm signUpForm)
		{
			if (User.Identity?.IsAuthenticated ?? false) return Redirect("/");
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				result = await UsersService.SignUpAsync(signUpForm);
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				(var user, var userSettings) = ((RootUser, ViewAvatarServer))result.Data;
				var jwtUser = AuthTokenManager.GenerateToken(user, userSettings);
				Logger.LogInformation(
						$"{nameof(SignUp)}();IP:[{HttpContext.Connection?.RemoteIpAddress}];\nUser-Agent:[{Request.Headers["User-Agent"]}];\nUserId:[{user.ID}]");
				return Ok(jwtUser);
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(SignUp)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/login"), Authorize(Policy = Policies.IsUser), AllowAnonymous]
		public async Task<IActionResult> Login(LoginForm loginForm)
		{
			if (User.Identity?.IsAuthenticated ?? false) return Redirect("/discussions");
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				result = await UsersService.LoginAsync(loginForm);
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				var (user, userSettings) =
						((RootUser, ViewAvatarServer))result.Data;
				var jwtUser = AuthTokenManager.GenerateToken(user, userSettings);
				Logger.LogInformation(
						$"{nameof(Login)}();IP:[{HttpContext.Connection?.RemoteIpAddress}];\nUser-Agent:[{Request.Headers["User-Agent"]}];\nUserId:[{user.ID}]");

				return Ok(jwtUser);
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(Login)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		//[HttpPost, Authorize(Policy = Policies.IsUser), AllowAnonymous]
		//public async Task<IActionResult> InvitationSignUp(InvitationLoginForm signUpForm)
		//{
		//	if (User.Identity?.IsAuthenticated ?? false) return Redirect("/discussions");
		//	var result = new WebResult();
		//	if (!ModelState.IsValid)
		//		return BadRequest(result.Invalidate(Localizer["Invalid model."]));
		//	try
		//	{
		//		result = await DiscussionsService.GetInvitationConfiguration(signUpForm.InvitationCode, includePassword: true);

		//		if (!result.IsValid)
		//			return StatusCode(result.StatusCode, result);

		//		var configuration = result.Data as InvitationConfiguration;
		//		if (configuration.IsPasswordRequired && signUpForm.InvitationPassword != configuration.Password)
		//		{
		//			result.Invalidate(Localizer["Invalid password."], StatusCodes.Status406NotAcceptable);
		//			return StatusCode(result.StatusCode, result);
		//		}

		//		result = await UsersService.SignUpAsync(new LoginForm
		//		{
		//			Username = signUpForm.Username,
		//			Password = signUpForm.Password,
		//			LightThemeIndexColour = signUpForm.ThemeIndexColour,
		//			ThemeIsDarkMode = signUpForm.ThemeIsDarkMode,
		//			InvitationPassword = signUpForm.InvitationPassword
		//		}, signUpForm.InvitationCode, configuration.IsPasswordRequired);
		//		if (!result.IsValid)
		//			return StatusCode(result.StatusCode, result);

		//		(var user, var userSettings) = ((User, ViewUserSettings))result.Data;
		//		var jwtUser = AuthTokenManager.GenerateToken(user, userSettings);
		//		Logger.LogInformation(
		//			$"{nameof(InvitationSignUp)}();IP:[{HttpContext.Connection?.RemoteIpAddress}];\nUser-Agent:[{Request.Headers["User-Agent"]}];\nUserId:[{user.ID}]");

		//		return Ok(jwtUser);
		//	}
		//	catch (Exception ex)
		//	{
		//		Logger.LogError(ex, $"{nameof(User)}.{nameof(InvitationSignUp)}()");
		//		return BadRequest(result.Invalidate(ex.Message));
		//	}
		//}

		//[HttpPost, Authorize(Policy = Policies.IsUser), AllowAnonymous]
		//public async Task<IActionResult> InvitationLogin(InvitationLoginForm loginForm)
		//{
		//	if (User.Identity?.IsAuthenticated ?? false) return Redirect("/discussions" + loginForm.InvitationCode);
		//	var result = new WebResult();
		//	if (!ModelState.IsValid)
		//		return BadRequest(result.Invalidate(Localizer["Invalid model."]));
		//	try
		//	{
		//		result = await DiscussionsService.GetInvitationConfiguration(loginForm.InvitationCode, includePassword: true);

		//		if (!result.IsValid)
		//			return StatusCode(result.StatusCode, result);

		//		var configuration = result.Data as InvitationConfiguration;
		//		if (configuration.IsPasswordRequired && loginForm.InvitationPassword != configuration.Password)
		//		{
		//			result.Invalidate(Localizer["Invalid password."], StatusCodes.Status406NotAcceptable);
		//			return StatusCode(result.StatusCode, result);
		//		}

		//		result = await UsersService.LoginAsync(new LoginForm
		//		{
		//			Username = loginForm.Username,
		//			Password = loginForm.Password,
		//			ThemeIsDarkMode = loginForm.ThemeIsDarkMode,
		//			LightThemeIndexColour = loginForm.ThemeIndexColour,
		//			InvitationPassword = loginForm.InvitationPassword
		//		}, loginForm.InvitationCode);

		//		if (!result.IsValid)
		//			return StatusCode(result.StatusCode, result);

		//		var (user, userSettings/*, userCurrentTier*/) = ((User, ViewUserSettings/*, UserCurrentTier*/))result.Data;
		//		var jwtUser = AuthTokenManager.GenerateToken(user, userSettings, 0
		//			/*userCurrentTier == null ? default : (userCurrentTier.EndPeriod - DateTime.UtcNow).Days*/);
		//		Logger.LogInformation(
		//			$"{nameof(InvitationLogin)}();IP:[{HttpContext.Connection?.RemoteIpAddress}];\nUser-Agent:[{Request.Headers["User-Agent"]}];\nUserId:[{user.ID}]");

		//		return Ok(jwtUser);
		//	}
		//	catch (Exception ex)
		//	{
		//		Logger.LogError(ex, $"{nameof(User)}.{nameof(InvitationLogin)}()");
		//		return BadRequest(result.Invalidate(ex.Message));
		//	}
		//}

		[HttpGet, Route("/clientapi/user/logout"), Authorize(Policy = Policies.IsUser)]
		public IActionResult Logout()
		{
			var result = new WebResult();
			try
			{
				return Ok();
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(Logout)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/update"), Authorize(Policy = Policies.IsUser)]
		public async Task<IActionResult> UpdateUser(UserForm userEmailForm)
		{
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				result = await UsersService.UpdateUserAsync(userEmailForm, User.GetUserId());
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				return Ok();
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(UpdateUser)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/update/settings"), Authorize(Policy = Policies.IsUser)]
		public async Task<IActionResult> UpdateUserSettings(ViewAvatarServer userSettings)
		{
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				result = await UsersService.UpdateUserSettingsAsync(userSettings, User.GetUserId());
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				return Ok();
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(UpdateUserSettings)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/update/password"), Authorize(Policy = Policies.IsUser)]
		public async Task<IActionResult> UpdatePassword(UserPasswordForm userPasswordForm)
		{
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				result = await UsersService.UpdateUserPasswordAsync(userPasswordForm, User.GetUserId());
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				return Ok();
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(UpdatePassword)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		//[HttpGet, Authorize(Policy = Policies.IsUser)]
		//public async Task<IActionResult> GetUser()
		//{
		//	var result = new WebResult();
		//	try
		//	{
		//		result = await UsersService.GetUserAsync(User.GetUserId());
		//		if (!result.IsValid)
		//			return StatusCode(result.StatusCode, result);

		//		return Ok(result.Data);
		//	}
		//	catch (Exception ex)
		//	{
		//		Logger.LogError(ex, $"{nameof(User)}.{nameof(GetUser)}()");
		//		return BadRequest(result.Invalidate(ex.Message));
		//	}
		//}

		[HttpGet, Route("/clientapi/user/settings"), Authorize(Policy = Policies.IsUser)]
		public async Task<IActionResult> GetUserSettings()
		{
			var result = new WebResult();
			try
			{
				result = await UsersService.GetUserSettingsAsync(User.GetUserId());
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);
				return Ok(result.Data);
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(GetUserSettings)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/recover/password"), AllowAnonymous]
		public async Task<IActionResult> RecoverPassword(PasswordRecoveryForm passwordRecoveryForm)
		{
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				var host = $"{Request.Scheme}://{Request.Host.Host}";
				result = await UsersService.SetupAndSendRecoveryEmail(passwordRecoveryForm, host);
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				return Ok(result);
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(RecoverPassword)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/recover/valid"), AllowAnonymous]
		public async Task<IActionResult> IsValidRecoveryCode(
				[FromBody,
						 Required(ErrorMessageResourceName = "Required", ErrorMessageResourceType = typeof(ErrorsResource)),
						 Display(Name = "RecoveryCode", ResourceType = typeof(FieldsNameResource))]
						string recoveryCode)
		{
			var result = new WebResult();
			try
			{
				result = await UsersService.IsValidRecoveryCode(recoveryCode);
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				return Ok(result.Data);
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(IsValidRecoveryCode)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		[HttpPost, Route("/clientapi/user/recover/update/password"), AllowAnonymous]
		public async Task<IActionResult> ChangePassword(NewPasswordForm newPasswordForm)
		{
			var result = new WebResult();
			if (!ModelState.IsValid)
				return BadRequest(result.Invalidate(Localizer["Invalid model."]));
			try
			{
				result = await UsersService.ChangePassword(newPasswordForm);
				if (!result.IsValid)
					return StatusCode(result.StatusCode, result);

				return Ok(result.Data);
			}
			catch (Exception ex)
			{
				Logger.LogError(ex, $"{nameof(User)}.{nameof(ChangePassword)}()");
				return BadRequest(result.Invalidate(ex.Message));
			}
		}

		//[HttpDelete, Route("delete"), Authorize(Policy = Policies.IsUser)]
		//public async Task<IActionResult> RemoveSelf()
		//{
		//	var result = new WebResult();
		//	try
		//	{
		//		//result = await UsersService.RemoveUserAsync(User.GetUserId());
		//		if (!result.IsValid)
		//			return StatusCode(result.StatusCode, result);

		//		await HttpContext.SignOutAsync();

		//		return Ok();
		//	}
		//	catch (Exception ex)
		//	{
		//		Logger.LogError(ex, $"{nameof(User)}.{nameof(RemoveSelf)}()");
		//		return BadRequest(result.Invalidate(ex.Message));
		//	}
		//}

		#endregion User endpoints

		#region Auth refresh

		[HttpGet, Route("/clientapi/user/sniff/again"), Authorize(Policy = Policies.IsUser)]
		public async Task<IActionResult> SniffAgain()
		{

			return Ok();
		}

		#endregion
	}
}