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 MyCore.DTO.Common;
using MyCore.DTO.MyControlPanel;
using MyCore.Models;
using MyCore.Models.MyControlPanel;
using MyCore.Models.MyControlPanel.Database;
using MyCore.Services;
using MyCore.Services.Devices;
using MyCore.Services.MyControlPanel;

namespace MyCore.Controllers.Devices
{
    [Authorize(Roles = "Admin")]
    [Route("api/device")]
    [ApiController]
    public class DeviceController : ControllerBase
    {
        private DeviceDatabaseService _DeviceDatabaseService;
        private ProviderDatabaseService _ProviderDatabaseService;
        private LocationDatabaseService _LocationDatabaseService;
        private UserDatabaseService _UserDatabaseService;

        public DeviceController(DeviceDatabaseService DeviceDatabaseService, ProviderDatabaseService ProviderDatabaseService, LocationDatabaseService LocationDatabaseService, UserDatabaseService UserDatabaseService)
        {
            this._DeviceDatabaseService = DeviceDatabaseService;
            this._ProviderDatabaseService = ProviderDatabaseService;
            this._LocationDatabaseService = LocationDatabaseService;
            this._UserDatabaseService = UserDatabaseService;
        }

        // GET: Devices
        /// <summary>
        /// Get all devices summary
        /// </summary>
        [ProducesResponseType(typeof(List<DeviceSummaryDTO>), 200)]
        [HttpGet]
        public ObjectResult GetAll()
        {
            try
            {
                List<Device> Devices = _DeviceDatabaseService.GetAll();

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

                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)]
        [HttpGet("{deviceId}")]
        public ObjectResult GetDetail(string deviceId)
        {
            try
            {
                Device device = _DeviceDatabaseService.GetById(deviceId);

                return new OkObjectResult(device.ToDTO());
            }
            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)]
        [HttpPost]
        public ObjectResult Create([FromBody] DeviceDetailDTO deviceDetailDTO)
        {
            try
            {

                if (deviceDetailDTO == null)
                    throw new KeyNotFoundException("Device is null");

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

                return new OkObjectResult(deviceCreated);
                
            }
            catch (DuplicateWaitObjectException ex)
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 400 };
            }
            catch (KeyNotFoundException ex)
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 404 };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Create devices from provider
        /// </summary>
        /// <param name="userId">User Id</param>  
        /// <param name="providerId">Id of Provider</param>  
        [ProducesResponseType(typeof(List<DeviceDetailDTO>), 200)]
        [HttpPost("fromProvider/{userId}")]
        public async Task<ObjectResult> CreateDevicesFromProvider(string userId, string providerId)
        {
            try
            {
                if (userId == null)
                    throw new InvalidOperationException("User not found");

                if (!UserService.IsExist(_UserDatabaseService, userId))
                    throw new KeyNotFoundException("User not found");

                Provider provider = ProviderService.GetProviderById(this._ProviderDatabaseService, userId, providerId);
                if (provider == null)
                    throw new KeyNotFoundException("Provider id is null");

                List<DeviceDetailDTO> devicesCreated = await DeviceService.CreateFromProvider(this._DeviceDatabaseService, this._ProviderDatabaseService, this._LocationDatabaseService, provider);

                return new OkObjectResult(devicesCreated);
            }
            catch (InvalidOperationException ex)
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 400 };
            }
            catch (KeyNotFoundException ex)
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 404 };
            }
            catch (AuthenticationException ex)
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 401 };
            }
            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>
        /// Update a device
        /// </summary>
        /// <param name="deviceId">Device Id</param>  
        /// <param name="deviceDetailDTO">Device to update</param>  
        [ProducesResponseType(typeof(DeviceDetailDTO), 200)]
        [HttpPut("{deviceId}")]
        public ObjectResult Update(string deviceId, [FromBody] DeviceDetailDTO deviceDetailDTO)
        {
            try
            {
                if (!_DeviceDatabaseService.IsExist(deviceId))
                    throw new KeyNotFoundException("Device does not exist");

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

                return new OkObjectResult(deviceUpdated);
            }
            catch (KeyNotFoundException ex)
            {
                return new BadRequestObjectResult(ex.Message) { StatusCode = 404 };
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        /// <summary>
        /// Delete a device
        /// </summary>
        /// <param name="deviceId">Id of device to delete</param>  
        [HttpDelete("{deviceId}")]
        public ObjectResult Delete(string deviceId)
        {
            try
            {
                // Check if exist
                _DeviceDatabaseService.Remove(deviceId);

                return new OkObjectResult(201);
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }
    }
}