using System.Text.Json;
using Microsoft.Extensions.Options;

namespace SpaceGame.Api.Universe.Bootstrap;

public sealed class SystemTemplateLoader(IOptions<StaticDataOptions> staticDataOptions)
{
    private readonly JsonSerializerOptions _jsonOptions = new()
    {
        PropertyNameCaseInsensitive = true,
    };

    internal List<SolarSystemDefinition> Load()
    {
        var path = Path.Combine(staticDataOptions.Value.DataRoot, "systems.json");
        var json = File.ReadAllText(path);
        return JsonSerializer.Deserialize<List<SolarSystemDefinition>>(json, _jsonOptions)
          ?? throw new InvalidOperationException("Unable to read systems.json.");
    }
}