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.Services;
using MyCore.Services.Devices;
using MyCore.Services.MyControlPanel;

namespace MyCore.Controllers
{
    [Authorize] // TODO Add ROLES (Roles = "Admin")
    [Route("api/device")]
    [ApiController]
    public class DeviceController : ControllerBase
    {
        private DeviceDatabaseService _DeviceDatabaseService;
        private ProviderDatabaseService _ProviderDatabaseService;
        private RoomDatabaseService _RoomDatabaseService;
        private HomeDatabaseService _HomeDatabaseService;
        private readonly IMqttClientService _mqttClientService;
        //private readonly IMqttOnlineClientService _mqttOnlineClientService;

        public DeviceController(DeviceDatabaseService DeviceDatabaseService, ProviderDatabaseService ProviderDatabaseService, RoomDatabaseService RoomDatabaseService, HomeDatabaseService HomeDatabaseService, MqttClientServiceProvider provider)//, MqttClientOnlineServiceProvider onlineProvider)
        {
            this._DeviceDatabaseService = DeviceDatabaseService;
            this._ProviderDatabaseService = ProviderDatabaseService;
            this._RoomDatabaseService = RoomDatabaseService;
            this._HomeDatabaseService = HomeDatabaseService;
            this._mqttClientService = provider.MqttClientService;
            //this._mqttOnlineClientService = onlineProvider.MqttOnlineClientService;
        }

        /// <summary>
        /// Get all devices summary
        /// </summary>
        /// <param name="homeId">Home Id</param> 
        [ProducesResponseType(typeof(List<DeviceSummaryDTO>), 200)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpGet("{homeId}")]
        public ObjectResult GetAll(string homeId)
        {
            try
            {
                List<Device> Devices = _DeviceDatabaseService.GetAll(homeId);

                List<DeviceSummaryDTO> devicesSummaryDTO = Devices.Select(d => d.ToSummaryDTO()).ToList();

                foreach (var device in devicesSummaryDTO)
                {
                    device.ProviderName = _ProviderDatabaseService.GetById(homeId, device.ProviderId).Name;
                }

                return new OkObjectResult(devicesSummaryDTO);
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

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

                Device device = _DeviceDatabaseService.GetById(deviceId);

                if (device == null)
                    throw new KeyNotFoundException("Device does not exist");

                return new OkObjectResult(device.ToDTO());
            }
            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 list of devices from a type
        /// </summary>
        /// <param name="homeId">Home Id</param>  
        /// <param name="type">device type</param>  
        [ProducesResponseType(typeof(List<DeviceDetailDTO>), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpGet("{homeId}/type/{type}")]
        public ObjectResult GetDevicesByType(string homeId, DeviceType type)
        {
            try
            {
                if (homeId == null)
                    throw new ArgumentNullException("Incorrect parameters");

                List<Device> devices = _DeviceDatabaseService.GetByType(homeId, type);

                return new OkObjectResult(devices.Select(d => d.ToDTO()));

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

        /// <summary>
        /// Create a device
        /// </summary>
        /// <param name="deviceDetailDTO">Device to create</param>  
        [ProducesResponseType(typeof(DeviceDetailDTO), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 409)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpPost]
        public ObjectResult Create([FromBody] DeviceDetailDTO deviceDetailDTO)
        {
            try
            {
                if (deviceDetailDTO == null)
                    throw new ArgumentNullException("Incorrect parameters");

                DeviceDetailDTO deviceCreated = DeviceService.CreateOrUpdate(this._DeviceDatabaseService, this._ProviderDatabaseService, this._RoomDatabaseService, deviceDetailDTO.HomeId, deviceDetailDTO, true);

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

        /// <summary>
        /// Create devices from provider
        /// </summary>
        /// <param name="homeId">Home Id</param>  
        /// <param name="providerId">Id of Provider</param>  
        [ProducesResponseType(typeof(List<DeviceDetailDTO>), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 401)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 421)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpPost("{homeId}/fromProvider/{providerId}")]
        public async Task<ObjectResult> CreateDevicesFromProvider(string homeId, string providerId)
        {
            try
            {
                if (homeId == null)
                    throw new ArgumentNullException("Invalid paramaters");

                if (!HomeService.IsExist(_HomeDatabaseService, homeId))
                    throw new KeyNotFoundException("Home not found");

                Provider provider = ProviderService.GetProviderById(this._ProviderDatabaseService, homeId, providerId);
                if (provider == null)
                    throw new KeyNotFoundException("Provider not found");

                Dictionary<string, List<DeviceDetailDTO>> devices = await DeviceService.CreateFromProvider(this._DeviceDatabaseService, this._ProviderDatabaseService, this._RoomDatabaseService, homeId, provider);

                return new OkObjectResult(devices);
            }
            catch (ArgumentNullException ex)
            {
                return new BadRequestObjectResult(ex.Message) {};
            }
            catch (KeyNotFoundException ex)
            {
                return new NotFoundObjectResult(ex.Message) {};
            }
            catch (AuthenticationException ex)
            {
                return new UnauthorizedObjectResult(ex.Message) {};
            }
            catch (HttpRequestException ex) // Not ok if not http request.. 
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 421 };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Get all zigbee2Mqtt devices
        /// </summary>
        /// <param name="homeId">Home Id</param>  
        [ProducesResponseType(typeof(List<DeviceDetailDTO>), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpGet("zigbee2Mqtt/{homeId}")]
        public ObjectResult GetDevicesFromZigbee2Mqtt(string homeId)
        {
            try
            {
                if (homeId == null)
                    throw new ArgumentNullException("Invalid paramaters");

                if (!HomeService.IsExist(_HomeDatabaseService, homeId))
                    throw new KeyNotFoundException("Home not found");

                // GET ALL LOCAL DEVICES
                var devices = MqttClientService.devices; // Be carefull, we only got the exact result after each connection

                return new OkObjectResult(devices);
            }
            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 devices from provider
        /// </summary>
        /// <param name="homeId">Home Id</param>  
        /// <param name="providerId">Id of Provider</param>  
        [ProducesResponseType(typeof(List<DeviceDetailDTO>), 200)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpGet("{homeId}/fromProvider/{providerId}")]
        public ObjectResult GetDevicesFromProvider(string homeId, string providerId)
        {
            try
            {
                if (homeId == null || providerId == null)
                    throw new ArgumentNullException("Invalid paramaters");

                if (!_HomeDatabaseService.IsExist(homeId))
                    throw new KeyNotFoundException("Home does not exist");

                if (!_ProviderDatabaseService.IsExist(providerId))
                    throw new KeyNotFoundException("Provider does not exist");

                List<Device> devices = _DeviceDatabaseService.GetByProviderId(providerId);

                return new OkObjectResult(devices.Select(d => d.ToDTO()));

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

        /// <summary>
        /// Update a device
        /// </summary>
        /// <param name="deviceDetailDTO">Device to update</param>  
        [ProducesResponseType(typeof(DeviceDetailDTO), 200)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpPut("{deviceId}")]
        public ObjectResult Update([FromBody] DeviceDetailDTO deviceDetailDTO)
        {
            try
            {
                if (!_DeviceDatabaseService.IsExist(deviceDetailDTO.Id))
                    throw new KeyNotFoundException("Device does not exist");

                DeviceDetailDTO deviceUpdated = DeviceService.CreateOrUpdate(this._DeviceDatabaseService, this._ProviderDatabaseService, this._RoomDatabaseService, deviceDetailDTO.HomeId, deviceDetailDTO, false);

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

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

                if (!_DeviceDatabaseService.IsExist(deviceId))
                    throw new KeyNotFoundException("Device does not exist");

                // TODO REMOVE DEVICE ID IN AUTOMATION and delete automation if none device ? 

                _DeviceDatabaseService.Remove(deviceId);

                return new ObjectResult("Device has been 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 };
            }
        }

        /// <summary>
        /// Delete devices from provider
        /// </summary>
        /// <param name="homeId">Home Id</param>  
        /// <param name="providerId">Id of Provider</param>  
        [ProducesResponseType(typeof(string), 202)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpDelete("{homeId}/fromProvider/{providerId}")]
        public ObjectResult DeleteDevicesFromProvider(string homeId, string providerId)
        {
            try
            {
                if (homeId == null || providerId == null)
                    throw new ArgumentNullException("Invalid paramaters");

                if (!_HomeDatabaseService.IsExist(homeId))
                    throw new KeyNotFoundException("Home does not exist");

                if (!_ProviderDatabaseService.IsExist(providerId))
                    throw new KeyNotFoundException("Provider does not exist");

                // TODO REMOVE DEVICE ID IN AUTOMATION and delete automation if none device ? 
                _DeviceDatabaseService.RemoveForProvider(providerId);
                return new ObjectResult("Provider devices 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 };
            }
        }

        /// <summary>
        /// Delete all device for a specified home
        /// </summary>
        /// <param name="homeId">Id of home</param>  
        [ProducesResponseType(typeof(string), 202)]
        [ProducesResponseType(typeof(string), 400)]
        [ProducesResponseType(typeof(string), 404)]
        [ProducesResponseType(typeof(string), 500)]
        [HttpDelete("home/{homeId}")]
        public ObjectResult DeleteAllForHome(string homeId)
        {
            try
            {
                if (homeId == null)
                    throw new ArgumentNullException("Invalid paramaters");

                if (!_HomeDatabaseService.IsExist(homeId))
                    throw new KeyNotFoundException("Home does not exist");

                // TODO REMOVE DEVICE ID IN AUTOMATION and delete automation if none device ? 
                _DeviceDatabaseService.RemoveForHome(homeId);
                return new ObjectResult("Home devices 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 };
            }
        }
    }
}