// ==========================================================================
//  GeolocationField.cs
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex Group
//  All rights reserved.
// ==========================================================================

using System;
using System.Collections.Generic;
using Newtonsoft.Json.Linq;
using Squidex.Domain.Apps.Core.Schemas.Validators;
using Squidex.Infrastructure;

namespace Squidex.Domain.Apps.Core.Schemas
{
    public sealed class GeolocationField : Field<GeolocationFieldProperties>
    {
        public GeolocationField(long id, string name, Partitioning partitioning)
            : this(id, name, partitioning, new GeolocationFieldProperties())
        {
        }

        public GeolocationField(long id, string name, Partitioning partitioning, GeolocationFieldProperties properties)
            : base(id, name, partitioning, properties)
        {
        }

        protected override IEnumerable<IValidator> CreateValidators()
        {
            if (Properties.IsRequired)
            {
                yield return new RequiredValidator();
            }
        }

        public override object ConvertValue(JToken value)
        {
            var geolocation = (JObject)value;

            foreach (var property in geolocation.Properties())
            {
                if (!string.Equals(property.Name, "latitude", StringComparison.OrdinalIgnoreCase) &&
                    !string.Equals(property.Name, "longitude", StringComparison.OrdinalIgnoreCase))
                {
                    throw new InvalidCastException("Geolocation can only have latitude and longitude property.");
                }
            }

            var lat = (double)geolocation["latitude"];
            var lon = (double)geolocation["longitude"];

            Guard.Between(lat,  -90,  90, "latitude");
            Guard.Between(lon, -180, 180, "longitude");

            return value;
        }

        public override T Accept<T>(IFieldVisitor<T> visitor)
        {
            return visitor.Visit(this);
        }
    }
}