using AyCode.Core.Serializers.Binaries;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;

namespace AyCode.Services.Mvc;

/// <summary>
/// MVC builder extensions to register AcBinary input/output formatters.
/// Inserts at index 0 — AcBinary is preferred when the client's Accept header allows.
/// </summary>
public static class AcBinaryMvcBuilderExtensions
{
    /// <summary>
    /// Registers AcBinary input + output formatters on the MVC pipeline. Pass <paramref name="configure"/>
    /// to customize <see cref="AcBinarySerializerOptions"/>; otherwise
    /// <see cref="AcBinarySerializerOptions.Default"/> is used.
    /// </summary>
    public static IMvcBuilder AddAcBinaryFormatters(this IMvcBuilder builder, Action<AcBinarySerializerOptions>? configure = null)
    {
        if (builder is null) throw new ArgumentNullException(nameof(builder));

        var options = AcBinarySerializerOptions.Default;
        if (configure != null)
        {
            options = new AcBinarySerializerOptions();
            configure(options);
        }

        builder.Services.Configure<MvcOptions>(opts =>
        {
            opts.InputFormatters.Insert(0, new AcBinaryInputFormatter(options));
            opts.OutputFormatters.Insert(0, new AcBinaryOutputFormatter(options));
        });

        return builder;
    }

    /// <inheritdoc cref="AddAcBinaryFormatters(IMvcBuilder, Action{AcBinarySerializerOptions}?)"/>
    public static IMvcCoreBuilder AddAcBinaryFormatters(this IMvcCoreBuilder builder, Action<AcBinarySerializerOptions>? configure = null)
    {
        if (builder is null) throw new ArgumentNullException(nameof(builder));

        var options = AcBinarySerializerOptions.Default;
        if (configure != null)
        {
            options = new AcBinarySerializerOptions();
            configure(options);
        }

        builder.Services.Configure<MvcOptions>(opts =>
        {
            opts.InputFormatters.Insert(0, new AcBinaryInputFormatter(options));
            opts.OutputFormatters.Insert(0, new AcBinaryOutputFormatter(options));
        });

        return builder;
    }
}