using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Shogi.Api.Extensions;
using Shogi.Api.Managers;
using Shogi.Api.Repositories;
using Shogi.Contracts.Api;
using Shogi.Contracts.Socket;
using Shogi.Contracts.Types;
using System.Data.SqlClient;

namespace Shogi.Api.Controllers;

[ApiController]
[Route("[controller]")]
[Authorize]
public class SessionsController : ControllerBase
{
	private readonly ISocketConnectionManager communicationManager;
	private readonly IModelMapper mapper;
	private readonly ISessionRepository sessionRepository;
	private readonly IQueryRespository queryRespository;
	private readonly ILogger<SessionsController> logger;

	public SessionsController(
		ISocketConnectionManager communicationManager,
		IModelMapper mapper,
		ISessionRepository sessionRepository,
		IQueryRespository queryRespository,
		ILogger<SessionsController> logger)
	{
		this.communicationManager = communicationManager;
		this.mapper = mapper;
		this.sessionRepository = sessionRepository;
		this.queryRespository = queryRespository;
		this.logger = logger;
	}

	[HttpPost]
	public async Task<IActionResult> CreateSession([FromBody] CreateSessionCommand request)
	{
		var userId = User.GetShogiUserId();
		var session = new Domain.Session(request.Name, userId);
		try
		{
			await sessionRepository.CreateSession(session);
		}
		catch (SqlException e)
		{
			logger.LogError(exception: e, message: "Uh oh");
			return this.Conflict();
		}

		await communicationManager.BroadcastToAll(new SessionCreatedSocketMessage());
		return CreatedAtAction(nameof(CreateSession), new { sessionName = request.Name }, null);
	}

	[HttpDelete("{name}")]
	public async Task<IActionResult> DeleteSession(string name)
	{
		var userId = User.GetShogiUserId();
		var session = await sessionRepository.ReadSession(name);

		if (session == null) return this.NoContent();

		if (session.Player1 == userId)
		{
			await sessionRepository.DeleteSession(name);
			return this.NoContent();
		}

		return this.Forbid("Cannot delete sessions created by others.");
	}

	[HttpGet("PlayerCount")]
	public async Task<ActionResult<ReadSessionsPlayerCountResponse>> GetSessionsPlayerCount()
	{
		var sessions = await this.queryRespository.ReadSessionPlayerCount();

		return Ok(new ReadSessionsPlayerCountResponse
		{
			PlayerHasJoinedSessions = Array.Empty<SessionMetadata>(),
			AllOtherSessions = sessions.ToList()
		});
	}

	[HttpGet("{name}")]
	public async Task<ActionResult<ReadSessionResponse>> GetSession(string name)
	{
		var session = await sessionRepository.ReadSession(name);
		if (session == null) return this.NotFound();

		return new ReadSessionResponse
		{
			Session = new Session
			{
				BoardState = new BoardState
				{
					Board = session.Board.BoardState.State.ToContract(),
					Player1Hand = session.Board.BoardState.Player1Hand.ToContract(),
					Player2Hand = session.Board.BoardState.Player2Hand.ToContract(),
					PlayerInCheck = session.Board.BoardState.InCheck?.ToContract(),
					WhoseTurn = session.Board.BoardState.WhoseTurn.ToContract()
				},
				Player1 = session.Player1,
				Player2 = session.Player2,
				SessionName = session.Name
			}
		};
	}

	[HttpPatch("{name}/Move")]
	public async Task<IActionResult> Move([FromRoute] string name, [FromBody] MovePieceCommand command)
	{
		var userId = User.GetShogiUserId();
		var session = await sessionRepository.ReadSession(name);

		if (session == null) return this.NotFound("Shogi session does not exist.");

		if (!session.IsSeated(userId)) return this.Forbid("Player is not a member of the Shogi session.");

		try
		{
			if (command.PieceFromHand.HasValue)
			{
				session.Board.Move(command.PieceFromHand.Value.ToDomain(), command.To);
			}
			else
			{
				session.Board.Move(command.From!, command.To, command.IsPromotion!.Value);
			}
		}
		catch (InvalidOperationException)
		{
			return this.Conflict("Move is illegal.");
		}
		// TODO: sessionRespository.SaveMove();
		await communicationManager.BroadcastToPlayers(
			new PlayerHasMovedMessage
			{
				PlayerName = userId,
				SessionName = session.Name,
			},
			session.Player1,
			session.Player2);

		return this.NoContent();
	}

	//[HttpPost("{sessionName}/Move")]
	//public async Task<IActionResult> MovePiece([FromRoute] string sessionName, [FromBody] MovePieceCommand request)
	//{

	//  var user = await gameboardManager.ReadUser(User);
	//  var session = await gameboardRepository.ReadSession(sessionName);
	//  if (session == null)
	//  {
	//    return NotFound();
	//  }
	//  if (user == null || (session.Player1 != user.Id && session.Player2 != user.Id))
	//  {
	//    return Forbid("User is not seated at this game.");
	//  }

	//  try
	//  {
	//    var move = request.Move;
	//    if (move.PieceFromCaptured.HasValue)
	//      session.Move(mapper.Map(move.PieceFromCaptured.Value), move.To);
	//    else if (!string.IsNullOrWhiteSpace(move.From))
	//      session.Move(move.From, move.To, move.IsPromotion);

	//    await gameboardRepository.CreateBoardState(session);
	//    await communicationManager.BroadcastToPlayers(
	//      new MoveResponse
	//      {
	//        SessionName = session.Name,
	//        PlayerName = user.Id
	//      },
	//      session.Player1,
	//      session.Player2);

	//    return Ok();
	//  }
	//  catch (InvalidOperationException ex)
	//  {
	//    return Conflict(ex.Message);
	//  }
	//}

	//[HttpPut("{sessionName}")]
	//public async Task<IActionResult> PutJoinSession([FromRoute] string sessionName)
	//{
	//  var user = await ReadUserOrThrow();
	//  var session = await gameboardRepository.ReadSessionMetaData(sessionName);
	//  if (session == null)
	//  {
	//    return NotFound();
	//  }
	//  if (session.Player2 != null)
	//  {
	//    return this.Conflict("This session already has two seated players and is full.");
	//  }

	//  session.SetPlayer2(user.Id);
	//  await gameboardRepository.UpdateSession(session);

	//  var opponentName = user.Id == session.Player1
	//    ? session.Player2!
	//    : session.Player1;
	//  await communicationManager.BroadcastToPlayers(new JoinSessionResponse
	//  {
	//    SessionName = session.Name,
	//    PlayerName = user.Id
	//  }, opponentName);
	//  return Ok();
	//}
}