// The MIT License (MIT)

//

// Copyright (c) 2015-2025 Rasmus Mikkelsen

// https://github.com/eventflow/EventFlow

//

// Permission is hereby granted, free of charge, to any person obtaining a copy of

// this software and associated documentation files (the "Software"), to deal in

// the Software without restriction, including without limitation the rights to

// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

// the Software, and to permit persons to whom the Software is furnished to do so,

// subject to the following conditions:

//

// The above copyright notice and this permission notice shall be included in all

// copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS

// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR

// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER

// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

using EventFlow.Extensions;

using EventFlow.ReadStores;

using EventFlow.Redis.EventStore;

using EventFlow.Redis.ReadStore;

using EventFlow.Redis.SnapshotStore;

using Microsoft.Extensions.DependencyInjection;

using Microsoft.Extensions.DependencyInjection.Extensions;

using Redis.OM;

using StackExchange.Redis;

namespace EventFlow.Redis;

public static class Extensions

{

/// <summary>

/// Adds the required services to use redis with EventFlow

/// </summary>

/// <param name="options"></param>

/// <param name="multiplexer">A Multiplexer connected to a redis database</param>

/// <returns></returns>

public static IEventFlowOptions ConfigureRedis(this IEventFlowOptions options, IConnectionMultiplexer multiplexer)

{

var provider = new RedisConnectionProvider(multiplexer);

options.ServiceCollection.TryAddSingleton(multiplexer);

options.ServiceCollection.TryAddSingleton(provider);

return options;

}

/// <summary>

/// Adds the required services to use redis with EventFlow

/// </summary>

/// <param name="options"></param>

/// <param name="connectionString">The connection string to connect with redis</param>

/// <returns></returns>

public static IEventFlowOptions ConfigureRedis(this IEventFlowOptions options, string connectionString)

{

var multiplexer = ConnectionMultiplexer.Connect(connectionString);

var provider = new RedisConnectionProvider(multiplexer);

options.ServiceCollection.TryAddSingleton(multiplexer);

options.ServiceCollection.TryAddSingleton(provider);

return options;

}

/// <summary>

/// Configures Redis as the event persistence. Requires Redis >= v5.0

/// </summary>

/// <param name="options"></param>

/// <returns></returns>

public static IEventFlowOptions UseRedisEventStore(this IEventFlowOptions options)

{

options.ServiceCollection.TryAddTransient<IEventStreamCollectionResolver, EventStreamCollectionResolver>();

options.UseEventPersistence<RedisEventPersistence>();

return options;

}

/// <summary>

/// Configures Redis as the read model store for the given read model. Requires Redis >= 5.0 and the redis search extension

/// </summary>

/// <param name="options"></param>

/// <typeparam name="TReadModel">The type of the redis ReadModel. Can be queried by using the IndexedAttribute from <a href="https://github.com/redis/redis-om-dotnet"> Redis.Om</a> on the required properties and inheriting from <see cref="RedisQueryHandler{TReadModel}"/></typeparam>

/// <returns></returns>

public static IEventFlowOptions UseRedisReadModel<TReadModel>(this IEventFlowOptions options)

where TReadModel : RedisReadModel

{

options.ServiceCollection.TryAddTransient<IRedisHashBuilder, RedisHashBuilder>();

options.ServiceCollection.TryAddTransient<IReadModelStore<TReadModel>, RedisReadModelStore<TReadModel>>();

options.UseReadStoreFor<IReadModelStore<TReadModel>, TReadModel>();

var provider = options.ServiceCollection.BuildServiceProvider().GetRequiredService<RedisConnectionProvider>();

provider.Connection.CreateIndex(typeof(TReadModel));

return options;

}

/// <summary>

/// Configures Redis as the read model store for the given read model. Requires Redis >= 5.0 and the redis search extension

/// </summary>

/// <param name="options"></param>

/// <typeparam name="TReadModel">The type of the redis ReadModel. Can be queried by using the IndexedAttribute from <a href="https://github.com/redis/redis-om-dotnet"> Redis.Om</a> on the required properties and inheriting from <see cref="RedisQueryHandler{TReadModel}"/></typeparam>

/// <typeparam name="TReadModelLocator">The type of the ReadModelLocator</typeparam>

/// <returns></returns>

public static IEventFlowOptions UseRedisReadModel<TReadModel, TReadModelLocator>(this IEventFlowOptions options)

where TReadModel : RedisReadModel where TReadModelLocator : IReadModelLocator

{

options.ServiceCollection.TryAddTransient<IRedisHashBuilder, RedisHashBuilder>();

options.ServiceCollection.TryAddTransient<IReadModelStore<TReadModel>, RedisReadModelStore<TReadModel>>();

options.UseReadStoreFor<IReadModelStore<TReadModel>, TReadModel, TReadModelLocator>();

var provider = options.ServiceCollection.BuildServiceProvider().GetRequiredService<RedisConnectionProvider>();

provider.Connection.CreateIndex(typeof(TReadModel));

return options;

}

/// <summary>

/// Configures Redis as a snapshot store for EventFlow. Requires Redis >= v5.0 and the Redis Json extension

/// </summary>

/// <param name="options"></param>

/// <returns></returns>

public static IEventFlowOptions UseRedisSnapshotStore(this IEventFlowOptions options)

{

options.UseSnapshotPersistence<RedisSnapshotPersistence>(ServiceLifetime.Transient);

var provider = options.ServiceCollection.BuildServiceProvider().GetRequiredService<RedisConnectionProvider>();

provider.Connection.CreateIndex(typeof(RedisSnapshot));

return options;

}

}