MasaApp.cs

// Copyright (c) MASA Stack All rights reserved.
// Licensed under the MIT License. See LICENSE.txt in the project root for license information.

namespace Masa.BuildingBlocks.Data;

public static class MasaApp
{
    private static IServiceProvider? _rootServiceProvider;

    public static IServiceProvider RootServiceProvider
    {
        get
        {
            if (_rootServiceProvider == null) Build();
            return _rootServiceProvider!;
        }
        private set => _rootServiceProvider = value;
    }

    private static IServiceCollection Services { get; set; } = new ServiceCollection();

    private static IEnumerable<Assembly>? Assemblies { get; set; }

    /// <summary>
    /// Global JsonSerializerOptions configuration
    /// </summary>
    private static JsonSerializerOptions? JsonSerializerOptions { get; set; }

    public static void Build() => Build(Services.BuildServiceProvider());

    public static void Build(IServiceProvider serviceProvider) => RootServiceProvider = serviceProvider;

    public static TService? GetService<TService>()
        => GetService<TService>(RootServiceProvider);

    public static TService? GetService<TService>(IServiceProvider serviceProvider)
        => serviceProvider.GetService<TService>();

    public static TService GetRequiredService<TService>() where TService : notnull
        => GetRequiredService<TService>(RootServiceProvider);

    public static TService GetRequiredService<TService>(IServiceProvider serviceProvider) where TService : notnull
        => serviceProvider.GetRequiredService<TService>();

    public static void TrySetServiceCollection(IServiceCollection services)
    {
        if (Services.Count == 0) SetServiceCollection(services);
    }

    public static void SetServiceCollection(IServiceCollection services)
    {
        Services = services;
        _rootServiceProvider = null;
    }

    public static IServiceCollection GetServices() => Services;

    /// <summary>
    /// Set the global Assembly collection (only if Assembly is not assigned a value)
    /// </summary>
    /// <param name="assemblies"></param>
    public static void TrySetAssemblies(params Assembly[] assemblies)
    {
        ArgumentNullException.ThrowIfNull(assemblies);

        Assemblies ??= assemblies;
    }

    /// <summary>
    /// Set the global Assembly collection (only if Assembly is not assigned a value)
    /// </summary>
    /// <param name="assemblies"></param>
    public static void TrySetAssemblies(IEnumerable<Assembly> assemblies)
    {
        ArgumentNullException.ThrowIfNull(assemblies);

        Assemblies ??= assemblies.ToArray();
    }

    /// <summary>
    /// Set the global Assembly collection
    /// </summary>
    /// <param name="assemblies"></param>
    public static void SetAssemblies(params Assembly[] assemblies)
        => Assemblies = assemblies;

    /// <summary>
    /// Set the global Assembly collection
    /// </summary>
    /// <param name="assemblies"></param>
    public static void SetAssemblies(IEnumerable<Assembly> assemblies)
        => Assemblies = assemblies;

    public static IEnumerable<Assembly> GetAssemblies() => Assemblies ?? AppDomain.CurrentDomain.GetAssemblies();

    public static void TrySetJsonSerializerOptions(JsonSerializerOptions jsonSerializerOptions)
    {
        if (JsonSerializerOptions == null) SetJsonSerializerOptions(jsonSerializerOptions);
    }

    public static void SetJsonSerializerOptions(JsonSerializerOptions jsonSerializerOptions)
        => JsonSerializerOptions = jsonSerializerOptions;

    public static JsonSerializerOptions? GetJsonSerializerOptions() => JsonSerializerOptions;
}