elsa-core/src/clients/Elsa.Api.Client/Extensions/DependencyInjectionExtensions.cs
2023-06-21 11:10:07 +02:00

93 lines
3.5 KiB
C#

using System.Text.Json;
using System.Text.Json.Serialization;
using Elsa.Api.Client.ActivityProviders;
using Elsa.Api.Client.Contracts;
using Elsa.Api.Client.Converters;
using Elsa.Api.Client.Options;
using Elsa.Api.Client.Resources.ActivityDescriptors.Contracts;
using Elsa.Api.Client.Resources.Identity.Contracts;
using Elsa.Api.Client.Resources.WorkflowDefinitions.Contracts;
using Elsa.Api.Client.Services;
using JetBrains.Annotations;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using Refit;
namespace Elsa.Api.Client.Extensions;
/// <summary>
/// Provides extension methods for dependency injection.
/// </summary>
[PublicAPI]
public static class DependencyInjectionExtensions
{
/// <summary>
/// Adds the Elsa client to the service collection.
/// </summary>
public static IServiceCollection AddElsaClient(this IServiceCollection services, Action<ElsaClientOptions> configureOptions)
{
services.Configure(configureOptions);
services.AddSingleton<IElsaClient, ElsaClient>();
services.AddActivityTypeService();
services.AddApi<IWorkflowDefinitionsApi>(CreateRefitSettings);
services.AddApi<IActivityDescriptorsApi>(CreateRefitSettings);
services.AddApi<ILoginApi>(CreateRefitSettings);
return services;
}
/// <summary>
/// Adds activity type services to the service collection.
/// </summary>
public static IServiceCollection AddActivityTypeService(this IServiceCollection services)
{
services.AddSingleton<IActivityTypeService, DefaultActivityTypeService>();
services.AddActivityTypeResolver<DefaultActivityTypeResolver>();
services.AddActivityTypeResolver<FlowchartActivityTypeResolver>();
return services;
}
/// <summary>
/// Adds a refit client for the specified API type.
/// </summary>
/// <param name="services">The service collection.</param>
/// <param name="settings">The refit settings.</param>
/// <typeparam name="T">The API type.</typeparam>
public static void AddApi<T>(this IServiceCollection services, Func<IServiceProvider, RefitSettings> settings) where T : class
{
services.AddRefitClient<T>(settings)
.ConfigureHttpClient(ConfigureElsaApiHttpClient);
}
public static IServiceCollection AddActivityTypeResolver<T>(this IServiceCollection services) where T : class, IActivityTypeResolver
{
return services.AddSingleton<IActivityTypeResolver, T>();
}
private static void ConfigureElsaApiHttpClient(IServiceProvider serviceProvider, HttpClient httpClient)
{
var options = serviceProvider.GetRequiredService<IOptions<ElsaClientOptions>>().Value;
httpClient.BaseAddress = options.BaseAddress;
}
private static RefitSettings CreateRefitSettings(IServiceProvider serviceProvider)
{
JsonSerializerOptions jsonSerializerSettings = new()
{
PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
};
jsonSerializerSettings.Converters.Add(new JsonStringEnumConverter());
jsonSerializerSettings.Converters.Add(new VersionOptionsJsonConverter());
jsonSerializerSettings.Converters.Add(new ActivityJsonConverterFactory(serviceProvider));
jsonSerializerSettings.Converters.Add(new ExpressionJsonConverterFactory());
var settings = new RefitSettings
{
ContentSerializer = new SystemTextJsonContentSerializer(jsonSerializerSettings)
};
return settings;
}
}