using System.Collections.ObjectModel;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace View_by_Distance.Instance.Models.Binder;

public class Place
{

    public string? Title { get; set; }
    public DegreesMinutesSeconds? Latitude { get; set; }
    public DegreesMinutesSeconds? Longitude { get; set; }

    public override string ToString()
    {
        string result = JsonSerializer.Serialize(this, BinderPlaceSourceGenerationContext.Default.Place);
        return result;
    }

    private static Models.Place Get(Place? Place)
    {
        Models.Place result;
        Models.DegreesMinutesSeconds latitude;
        Models.DegreesMinutesSeconds longitude;
        if (Place is null) throw new NullReferenceException(nameof(Place));
        if (Place.Title is null) throw new NullReferenceException(nameof(Place.Title));
        if (Place.Latitude is null) throw new NullReferenceException(nameof(Place.Latitude));
        if (Place.Latitude.Degrees is null) throw new NullReferenceException(nameof(Place.Latitude.Degrees));
        if (Place.Latitude.Minutes is null) throw new NullReferenceException(nameof(Place.Latitude.Minutes));
        if (Place.Latitude.Seconds is null) throw new NullReferenceException(nameof(Place.Latitude.Seconds));
        if (Place.Longitude is null) throw new NullReferenceException(nameof(Place.Longitude));
        latitude = new(Place.Latitude.Degrees.Value, Place.Latitude.Minutes.Value, Place.Latitude.Seconds.Value);
        if (Place.Longitude.Degrees is null) throw new NullReferenceException(nameof(Place.Longitude.Degrees));
        if (Place.Longitude.Minutes is null) throw new NullReferenceException(nameof(Place.Longitude.Minutes));
        if (Place.Longitude.Seconds is null) throw new NullReferenceException(nameof(Place.Longitude.Seconds));
        longitude = new(Place.Longitude.Degrees.Value, Place.Longitude.Minutes.Value, Place.Longitude.Seconds.Value);
        result = new(
            Place.Title,
            latitude,
            longitude
        );
        return result;
    }

    internal static ReadOnlyCollection<Models.Place> GetPlaces(string[]? places)
    {
        List<Models.Place> results = [];
        if (places is not null)
        {
            Place? place;
            foreach (string jsonElement in places)
            {
                place = JsonSerializer.Deserialize(jsonElement, BinderPlaceSourceGenerationContext.Default.Place);
                results.Add(Get(place));
            }
        }
        return new(results);
    }

}

[JsonSourceGenerationOptions(WriteIndented = true)]
[JsonSerializable(typeof(Place))]
internal partial class BinderPlaceSourceGenerationContext : JsonSerializerContext
{
}