using System;
using System.Linq;
using System.Linq.Expressions;
using BlueWest.Data;
using BlueWest.WebApi.EF;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace BlueWest.WebApi.Controllers
{
    /// <summary>
    /// The controller responsible to fetch currency data
    /// </summary>
    [ApiController]
    [Route("[controller]")]
    public partial class CurrencyController : ControllerBase
    {

        #region Initialization
        private readonly CountryDbContext _dbContext;

        /// <summary>
        /// Api Controller for Currency data
        /// </summary>
        /// <param name="dbContext"></param>
        public CurrencyController(CountryDbContext dbContext)
        {
            _dbContext = dbContext;
        }

        #endregion

        #region GetCurrencies
        /// <summary>
        /// Gets the currency data from currency table
        /// </summary>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [HttpGet]
        public ActionResult GetCurrencies(int skip = 0, int take = 50, int orderDir = 1)
        {
            var (success, result) = _dbContext.GetCurrencies(skip, take, orderDir, null, x => x.Id);

            if (success)
            {
                return Ok(result);
            }
            return new NotFoundResult();
        }

        #endregion

        #region GetCurrencyById
        /// <summary>
        ///  Gets a currency by the currency number (id)
        /// </summary>
        /// <param name="currencyId">The id of the currency to get</param>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [HttpGet("{currencyId}", Name = nameof(GetCurrencyById))]
        public ActionResult GetCurrencyById(int currencyId)
        {
            var (success, result) = _dbContext.GetOneCurrencyById(currencyId);

            if (success)
            {
                return Ok(result);
            }

            return new NotFoundResult();
        }

        #endregion

        #region GetCurrencyWithCode

        /// <summary>
        ///  Gets a currency by the currency number (id)
        /// </summary>
        /// <param name="currencyId">The id of the currency to get</param>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [HttpGet("{currencyCode}", Name = nameof(GetCurrencyWithCode))]
        public ActionResult GetCurrencyWithCode(string currencyCode)
        {
            var (success, currency) =
                _dbContext.GetCurrencyWith(x => x.Code == currencyCode);

            if (success)
            {
                return Ok(currency);
            }

            return new NotFoundResult();
        }

        #endregion

        #region AddCurrency
        /// <summary>
        /// Add Currency to the table of currencies
        /// </summary>
        /// <param name="currencyToCreate">Currency data to create</param>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status201Created)]
        [HttpPost]
        public ActionResult AddCurrency(CurrencyCreate currencyToCreate)
        {
            var (success, newCurrency) = _dbContext.AddCurrency(currencyToCreate);

            if (!success)
            {
                return new NotFoundResult();
            }

            return CreatedAtRoute(nameof(GetCurrencyById), new { CurrencyId = newCurrency.Code }, newCurrency);

        }

        #endregion

        #region UpdateCurrency
        /// <summary>
        /// Update a currency data from the Currency table in the database
        /// </summary>
        /// <param name="currencyNumber">The currency number we want to update</param>
        /// <param name="currencyToUpdate">Currency Data to update</param>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status400BadRequest)]
        [HttpPut("{currencyNumber}")]
        public ActionResult UpdateCurrency(int currencyNumber, CurrencyUpdate currencyToUpdate)
        {
            var (success, currency) = _dbContext.UpdateCurrency(currencyToUpdate, currencyNumber);

            if (success)
            {
                return Ok(currency);
            }

            return new NotFoundResult();
        }

        #endregion

        #region GetCountryFromCurrency
        /// <summary>
        ///  Gets a specific country id in a country
        /// </summary>
        /// <param name="currencyId">The id of the currency</param>
        /// <param name="countryId">The id of the country</param>
        /// <returns></returns>
        /*
         * [GetOneFrom(nameof(Currency.Id), nameof(Country.Id), typeof(CountryUnique))]
         */
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [HttpGet("{currencyId}/countries/{countryId}", Name = nameof(GetCountryFromCurrency))]
        public ActionResult GetCountryFromCurrency(int currencyId, int countryId)
        {
            var (success, country) = _dbContext.GetCountryFromCurrency(currencyId, countryId);


            if (success)
            {
                return Ok(country);
            }

            return new NotFoundResult();

        }

        #endregion

        #region AddCountry
        /// <summary>
        /// Add Currency to the table of currencies
        /// </summary>
        /// <param name="currencyId"></param>
        /// <param name="countryToCreate"></param>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status201Created)]
        [HttpPost("{currencyId}/countries")]
        public ActionResult AddCountry(CountryCreate countryToCreate)
        {
            var (success, result) = _dbContext.AddCountry(countryToCreate);

            if (success)
            {
                return Ok(result);
            }
            return new BadRequestResult();
        }

        #endregion

    }
}