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

namespace BlueWest.WebApi.Controllers
{
[ApiController]
[Route("[controller]")]
public class CountriesController : ControllerBase
{
    private readonly CountriesDbContext _dbContext;

    /// <summary>
    /// Controller responsible for handling country data in the Country table
    /// </summary>
    /// <param name="dbContext"></param>
    public CountriesController(CountriesDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    
    /// <summary>
    /// Add Country
    /// </summary>
    /// <param name="country"></param>
    /// <returns>The newly created country</returns>
    /// /// <summary>
    /// Creates a Country.
    /// </summary>
    /// <remarks>
    /// Sample request:
    ///
    ///     POST /Countries
    ///     {
    ///        "code": 1,
    ///        "stateName": "United States of America",
    ///        "tld": "us"
    ///     }
    ///
    /// </remarks>
    /// <response code="201">Returns the newly created country</response>
    [ProducesResponseType(StatusCodes.Status201Created)]
    [HttpPost]
    public ActionResult AddCountry(Country country)
    {
        _dbContext.Countries.Add(country);
        _dbContext.SaveChanges();
        return CreatedAtRoute(nameof(GetCountryById),  new {countryId = country.Code}, country);
    }

    /// <summary>
    /// Updates a Country
    /// </summary>
    /// <param name="countryCode">The country ISO 3166 code</param>
    /// <param name="countryToUpdate">Country payload data</param>
    /// <returns></returns>
    [ProducesResponseType(StatusCodes.Status200OK)]
    [ProducesResponseType(StatusCodes.Status400BadRequest)]
    [HttpPut("{countryCode}")]
    public ActionResult UpdateCountry(int countryCode, CountryUpdate countryToUpdate)
    {

        var country = _dbContext.Countries.FirstOrDefault(x => x.Code == countryCode);
            
        if (country != null)
        {
            var updatedCountry = new Country(countryToUpdate, countryCode, null);
            _dbContext.Countries.Update(updatedCountry);
            return Ok(updatedCountry);
        }
            
        return new NotFoundResult();
    }

              
    /// <summary>
    /// Get countries
    /// </summary>
    /// <returns></returns>
    [ProducesResponseType(StatusCodes.Status200OK)]
    [ProducesResponseType(StatusCodes.Status404NotFound)]
    [HttpGet]
    public ActionResult GetCountries()
    {
        var array = _dbContext.Countries;
            
        if (array != null)
        {
            return Ok(array.ToArray());
        }
            
        return new NotFoundResult();
    }
              
    /// <summary>
    /// Get Country by Id
    /// </summary>
    /// <param name="countryId">ISO 3166-1 country numeric code</param>
    /// <returns></returns>
    [ProducesResponseType(StatusCodes.Status200OK)]
    [ProducesResponseType(StatusCodes.Status404NotFound)]
    [HttpGet("{countryId}", Name = nameof(GetCountryById))]
    public ActionResult GetCountryById(int countryId)
    {
        var array = _dbContext.Countries.FirstOrDefault(x => x.Code == countryId);
            
        if (array != null)
        {
            return Ok(array);
        }
            
        return new NotFoundResult();
    }


}
}