using Application.Domain.Entities;
using Application.Models;
using Infrastructure.Application.Services.Settings;
using Infrastructure.Data;
using IoTCenter.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using System;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Threading;

namespace IoTCenter.Api.Controllers
{
    [ApiVersion("1.0")]
    [Route("api/v{version:apiVersion}/[controller]/[action]")]
    [ApiController]
    public class ApiController : ControllerBase
    {
        private readonly ISettingService _settingService;
        private readonly ILogger<ApiController> _logger;
        private readonly IRepository<Scene> _sceneRepo;
        private readonly IRepository<SceneCommand> _sceneCommandRepo;
        private readonly IRepository<SceneTimer> _sceneTimerRepo;
        private readonly IRepository<Command> _commandRepo;
        private readonly IRepository<Device> _deviceRepo;
        private readonly IHubContext<IoTCenterHub> _hub;

        public ApiController(
            ISettingService settingService,
            ILogger<ApiController> logger,
            IRepository<Scene> sceneRepo,
            IRepository<SceneCommand> sceneCommandRepo,
            IRepository<SceneTimer> sceneTimerRepo,
            IRepository<Command> commandRepo,
            IRepository<Device> deviceRepo,
            IHubContext<IoTCenterHub> hub)
        {
            this._settingService = settingService;
            this._logger = logger;
            this._sceneRepo = sceneRepo;
            this._sceneTimerRepo = sceneTimerRepo;
            this._sceneCommandRepo = sceneCommandRepo;
            this._commandRepo = commandRepo;
            this._deviceRepo = deviceRepo;
            this._hub = hub;
        }

        [HttpPost]
        public ActionResult ExecApi([FromBody] ApiRequestModel model)
        {
            try
            {
                this.CallApi(model.ConnectionId, model.Number, model.Method, model.Query);
                return Ok();
            }
            catch (Exception ex)
            {
                this._logger.LogError(ex.ToString());
                return Problem(ex.Message);
            }
        }

        [HttpPost]
        public ActionResult ExecScene([FromBody][Required] Guid id)
        {
            try
            {
                var scene = this._sceneRepo.ReadOnlyTable().Include(o => o.Node).FirstOrDefault(o => o.Id == id);
                if (scene != null)
                {
                    if (scene.NodeId != null)
                    {
                        this._hub.ServerToClient(Methods.ExecSceneRequest, id, scene.Node.Number, null);
                    }
                    else
                    {
                        var commands = this._sceneCommandRepo.ReadOnlyTable()
                            .Include(o => o.Command).ThenInclude(o => o.Device).ThenInclude(o => o.Node)
                            .Where(o => o.SceneId == id)
                            .Select(o => o.Command)
                            .ToList();
                        foreach (var command in commands.OrderBy(o => o.DisplayOrder))
                        {
                            try
                            {
                                this._hub.ServerToClient(Methods.ExecCommand, command.Id, command.Device.Node.Number, null);
                                Delay(command.Delay);
                            }
                            catch (Exception ex)
                            {
                                this._logger.LogError(ex.ToString());
                            }
                        }
                    }
                }
                return Ok();
            }
            catch (Exception ex)
            {
                this._logger.LogError(ex.ToString());
                return Problem(ex.Message);
            }
        }

        [HttpPost]
        public ActionResult ExecCommand([FromBody][Required] Guid id)
        {
            try
            {
                var command = this._commandRepo.ReadOnlyTable().Include(o => o.Device.Node).FirstOrDefault(o => o.Id == id);
                this._hub.ServerToClient(Methods.ExecCommand, command.Id, command.Device.Node.Number, null);
                return Ok();
            }
            catch (Exception ex)
            {
                this._logger.LogError(ex.ToString());
                return Problem(ex.Message);
            }
        }

        /// <summary>
        /// job server call back
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpPost]
        [Route("{id}")]
        public ActionResult ExecTimer([Required] Guid id)
        {
            try
            {
                this._logger.LogDebug($"global timer exec:{id}");
                var timer = this._sceneTimerRepo.ReadOnlyTable()
                    .Include(o => o.Scene).ThenInclude(o => o.SceneCommands).ThenInclude(o => o.Command).ThenInclude(o => o.Device).ThenInclude(o => o.Node)
                    .FirstOrDefault(o => o.Id == id);
                if (timer != null)
                {
                    foreach (var sceneCommand in timer.Scene.SceneCommands.OrderBy(o => o.Command.DisplayOrder))
                    {
                        try
                        {
                            this._hub.ServerToClient(Methods.ExecCommand, sceneCommand.CommandId, sceneCommand.Command.Device.Node.Number, null);
                            Delay(sceneCommand.Command.Delay);
                        }
                        catch (Exception ex)
                        {
                            this._logger.LogError(ex.ToString());
                        }
                    }
                }
                else
                {
                    this._logger.LogError($"timer {id} does not exist");
                }
                return Ok();
            }
            catch (Exception ex)
            {
                this._logger.LogError(ex.ToString());
                return Problem(ex.Message);
            }
        }

        private void CallApi(string connectionId, string number, string method, string query)
        {
            var device = this._deviceRepo.ReadOnlyTable().Include(o => o.Node).FirstOrDefault(o => o.Number == number);
            if (device != null)
            {
                var message = $"{method}?number={number}{(string.IsNullOrEmpty(query) ? "" : "&")}{query}";
                var group = device.Node.Number;
                this._hub.ServerToClient(Methods.ExecApiRequest, message, group, connectionId);
            }
        }

        private void Delay(int commandDelay)
        {
            var delay = 0;
            try
            {
                delay = Convert.ToInt32(this._settingService.GetSetting("delay").Value);
            }
            catch (Exception ex)
            {
                this._logger.LogError(ex.ToString());
            }
            if (commandDelay > 0)
            {
                delay += commandDelay;
            }
            if (delay > 0)
            {
                Thread.Sleep(delay);
            }
        }
    }
}