using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using MongoDB.Bson;
using MyCore.Interfaces.DTO;
using MyCore.Interfaces.Models;
using MyCore.Services;
using MyCore.Services.Devices;
using MyCore.Services.MyControlPanel;

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

            public ProviderController(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 user providers 
            /// </summary>
            [ProducesResponseType(typeof(List<ProviderDTO>), 200)]
            [HttpGet("{userId}")]
            public ObjectResult GetAll(string userId)
            {
                try
                {
                    if (userId == null)
                        throw new InvalidOperationException("User not found");

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

                    List<Provider> providers = ProviderService.GetAll(this._ProviderDatabaseService, userId);

                    List<ProviderDTO> providersDTO = providers.Select(p => p.ToDTO()).ToList();

                    return new OkObjectResult(providersDTO);
                }
                catch (InvalidOperationException 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 a provider
            /// </summary>
            /// <param name="providerDTO">Provider to create</param>  
            [ProducesResponseType(typeof(ProviderDTO), 200)]
            [HttpPost]
            public ObjectResult Create([FromBody] ProviderDTO providerDTO)
            {
                try
                {

                    if (providerDTO.UserId == null)
                        throw new InvalidOperationException("User not found");

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

                    if (providerDTO == null)
                        throw new KeyNotFoundException("Provider is null");

                    if (_ProviderDatabaseService.AlreadyExistForUser(providerDTO.UserId, providerDTO.Name))
                        throw new ArgumentException("Provider already exists");

                    ProviderDTO providerCreated = ProviderService.CreateOrUpdate(this._ProviderDatabaseService, providerDTO.UserId, providerDTO, true);

                    return new OkObjectResult(providerCreated);

                }
                catch (InvalidOperationException ex)
                {
                    return new BadRequestObjectResult(ex.Message) { StatusCode = 400 };
                }
                catch (KeyNotFoundException ex)
                {
                    return new BadRequestObjectResult(ex.Message) { StatusCode = 404 };
                }
                catch (ArgumentException ex)
                {
                    return new BadRequestObjectResult(ex.Message) { StatusCode = 409 };
                }
                catch (Exception ex)
                {
                    return new ObjectResult(ex.Message) { StatusCode = 500 };
                }
            }

            /// <summary>
            /// Update a provider
            /// </summary>
            /// <param name="providerDTO">Provider to update</param>  
            [ProducesResponseType(typeof(DeviceDetailDTO), 200)]
            [HttpPut]
            public ObjectResult Update([FromBody] ProviderDTO providerDTO)
            {
                try
                {
                    if (providerDTO.UserId == null)
                        throw new InvalidOperationException("User not found");

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

                    if (!ProviderService.IsExist(this._ProviderDatabaseService, providerDTO.UserId, providerDTO.Id))
                            throw new KeyNotFoundException("Provider does not exist");

                    ProviderDTO providerUpdated = ProviderService.CreateOrUpdate(this._ProviderDatabaseService, providerDTO.UserId, providerDTO, false);

                    return new OkObjectResult(providerUpdated);
                }
                catch (InvalidOperationException 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>
            /// Delete a provider
            /// </summary>
            /// <param name="providerId">Id of provider to delete</param>  
            [HttpDelete("{providerId}")]
            public ObjectResult Delete(string providerId)
            {
                try
                {
                    if (providerId == null)
                        throw new InvalidOperationException("Provider is null");

                    if (!_ProviderDatabaseService.IsExist(providerId))
                        throw new InvalidOperationException("Provider is null");

                    _ProviderDatabaseService.Remove(providerId);

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