using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Security.Authentication;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using MongoDB.Bson;
using Mqtt.Client.AspNetCore.Services;
using MyCore.Interfaces.DTO;
using MyCore.Interfaces.Models;
using MyCore.Service.Services;
using MyCore.Services;
using MyCore.Services.Devices;
using MyCore.Services.MyControlPanel;

namespace MyCore.Service.Controllers
{
    [Authorize] // TODO Add ROLES (Roles = "Admin")
    [Route("api/home")]
    [ApiController]
    public class HomeController : ControllerBase
    {
        private HomeDatabaseService _HomeDatabaseService;
        private AlarmDatabaseService _AlarmDatabaseService;
        private RoomDatabaseService _RoomDatabaseService;
        private DeviceDatabaseService _DeviceDatabaseService;
        private ProviderDatabaseService _ProviderDatabaseService;
        private UserDatabaseService _UserDatabaseService;
        private GroupDatabaseService _GroupDatabaseService;
        private AutomationDatabaseService _AutomationDatabaseService;
        private readonly IMqttClientService _mqttClientService;
        //private readonly IMqttOnlineClientService _mqttOnlineClientService;

        public HomeController(HomeDatabaseService homeDatabaseService, RoomDatabaseService roomDatabaseService, DeviceDatabaseService deviceDatabaseService, ProviderDatabaseService providerDatabaseService, UserDatabaseService userDatabaseService, AutomationDatabaseService automationDatabaseService, GroupDatabaseService groupDatabaseService, AlarmDatabaseService alarmDatabaseService, MqttClientServiceProvider provider)//, MqttClientOnlineServiceProvider onlineProvider)
        {
            this._HomeDatabaseService = homeDatabaseService;
            this._RoomDatabaseService = roomDatabaseService;
            this._DeviceDatabaseService = deviceDatabaseService;
            this._ProviderDatabaseService = providerDatabaseService;
            this._UserDatabaseService = userDatabaseService;
            this._AutomationDatabaseService = automationDatabaseService;
            this._GroupDatabaseService = groupDatabaseService;
            this._AlarmDatabaseService = alarmDatabaseService;
            this._mqttClientService = provider.MqttClientService;
            //this._mqttOnlineClientService = onlineProvider.MqttOnlineClientService;
        }

        /// <summary>
        /// Get all home for specified user
        /// </summary>
        /// <param name="userId">User Id</param> 
        [ProducesResponseType(typeof(List<HomeDTO>), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpGet("{userId}")]
        public ObjectResult GetAll(string userId)
        {
            try
            {

                if (userId == null)
                    throw new ArgumentNullException("Incorrect parameters");

                UserInfo user = _UserDatabaseService.GetById(userId);
                if (user == null)
                    throw new KeyNotFoundException("User does not exist");

                List<HomeDTO> HomesResult = new List<HomeDTO>();
                foreach (var homeId in user.HomeIds)
                { 
                    Home home = _HomeDatabaseService.GetById(homeId);
                    HomesResult.Add(home.ToDTO());
                }

                return new OkObjectResult(HomesResult);
            }
            catch (ArgumentNullException ex)
            {
                return new BadRequestObjectResult(ex.Message) { };
            }
            catch (KeyNotFoundException ex)
            {
                return new NotFoundObjectResult(ex.Message) { };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Get detail info of a specified home
        /// </summary> 
        /// <param name="homeId">home id</param>  
        [ProducesResponseType(typeof(HomeDetailDTO), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpGet("detail/{homeId}")]
        public ObjectResult GetDetail(string homeId)
        {
            try
            {
                if (homeId == null)
                    throw new ArgumentNullException("Incorrect parameters");

                Home home = _HomeDatabaseService.GetById(homeId);
                if (home == null)
                    throw new KeyNotFoundException("Home does not exist");

                List<UserInfo> users = _UserDatabaseService.GetByHomeId(home.Id);
                List<Device> devices = _DeviceDatabaseService.GetByHomeId(home.Id);
                List<Automation> automations = _AutomationDatabaseService.GetByHomeId(home.Id);
                List<Provider> providers = _ProviderDatabaseService.GetByHomeId(home.Id);
                List<Group> groups = _GroupDatabaseService.GetByHomeId(home.Id);

                return new OkObjectResult(home.ToDetailDTO(users, devices, automations, providers, groups));
            }
            catch (ArgumentNullException ex)
            {
                return new BadRequestObjectResult(ex.Message) { };
            }
            catch (KeyNotFoundException ex)
            {
                return new NotFoundObjectResult(ex.Message) { };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Create a home
        /// </summary>
        /// <param name="createOrUpdateHomeDTO">Home to create</param>  
        [ProducesResponseType(typeof(HomeDTO), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpPost]
        public ObjectResult Create([FromBody] CreateOrUpdateHomeDTO createOrUpdateHomeDTO)
        {
            try
            {
                if (createOrUpdateHomeDTO == null)
                    throw new ArgumentNullException("Incorrect parameters");

                if (createOrUpdateHomeDTO.UsersIds.Count <= 0 && _UserDatabaseService.IsExistMultiple(createOrUpdateHomeDTO.UsersIds))
                    throw new ArgumentNullException("To create an home, you need at least one user");

                Home homeCreated = HomeService.CreateOrUpdate(this._HomeDatabaseService, this._AlarmDatabaseService, createOrUpdateHomeDTO, true);

                if (homeCreated.IsAlarm) 
                    // Create default alarm modes
                    AlarmService.CreateDefaultAlarmModes(_HomeDatabaseService, _AlarmDatabaseService, homeCreated); // Create and by default select desarmed mode

                foreach (var userId in createOrUpdateHomeDTO.UsersIds)
                {
                    UserInfo user = _UserDatabaseService.GetById(userId);
                    if (user.HomeIds == null)
                        user.HomeIds = new List<string>();

                    if (!user.HomeIds.Contains(homeCreated.Id))
                        user.HomeIds.Add(homeCreated.Id);
                    _UserDatabaseService.Update(user);
                }

                return new OkObjectResult(homeCreated.ToDTO());
            }
            catch (ArgumentNullException ex)
            {
                return new BadRequestObjectResult(ex.Message) { };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Update a home
        /// </summary>
        /// <param name="createOrUpdateHomeDTO">Home to update</param>  
        [ProducesResponseType(typeof(HomeDTO), 200)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpPut]
        public ObjectResult Update([FromBody] CreateOrUpdateHomeDTO createOrUpdateHomeDTO)
        {
            try
            {
                if (!_HomeDatabaseService.IsExist(createOrUpdateHomeDTO.Id))
                    throw new KeyNotFoundException("Home does not exist");

                if (createOrUpdateHomeDTO.UsersIds.Count <= 0)
                    throw new ArgumentNullException("To create an home, you need at least one user");

                Home homeUpdated = HomeService.CreateOrUpdate(this._HomeDatabaseService, this._AlarmDatabaseService, createOrUpdateHomeDTO, false);

                return new OkObjectResult(homeUpdated.ToDTO());
            }
            catch (KeyNotFoundException ex)
            {
                return new NotFoundObjectResult(ex.Message) {};
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Delete a home
        /// </summary>
        /// <param name="homeId">Id of home to delete</param>  
        [ProducesResponseType(typeof(string), 202)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpDelete("{homeId}")]
        public ObjectResult Delete(string homeId)
        {
            try
            {
                if (homeId == null)
                    throw new ArgumentNullException("Incorrect parameters");

                if (!_HomeDatabaseService.IsExist(homeId))
                    throw new KeyNotFoundException("Home does not exist");
                
                Home home = _HomeDatabaseService.GetById(homeId);
                // Check if something needs to be done.. (delete all devices related to home, all automations, all groups, all alarm modes, etc)
                // Delete home
                _HomeDatabaseService.Remove(homeId);
                
                return new OkObjectResult("Home has been successfully deleted") { StatusCode = 202 };
            }
            catch (ArgumentNullException ex)
            {
                return new BadRequestObjectResult(ex.Message) { };
            }
            catch (KeyNotFoundException ex)
            {
                return new NotFoundObjectResult(ex.Message) { };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }
    }
}