CultLib/tests/GameCult.Caching.ConsumerBuild/Program.cs

using System.Collections.Generic;
using System.Linq;
using GameCult.Caching;
using MessagePack;

// RefKeyedDictionaryCompilesInAConsumer: this project building is the test.
System.Console.WriteLine(new ConsumerFaction().Standing.Count);

// An outside store kind versions its foreign records: this project has no InternalsVisibleTo, so building and running it pins that
// Foreign(record, catalog, version) is all a store kind outside the library needs for ExpectUnchanged to hold over them.
using var outside = new CultCache(CultDocumentRegistry.ForTypes(new[] { typeof(ConsumerFaction) }));
outside.AddBackingStore(new OutsideStore(), typeof(ConsumerFaction));
var committed = outside.Commit(batch =>
{
    batch.ExpectUnchanged();
    batch.Upsert(new ConsumerFaction { Name = "a" }, new CultRecordHandle<ConsumerFaction>(new CultRecordKey("a")));
});
if (!committed)
    return 1;

// A store file is written and read without a cache through the public members: this project has no InternalsVisibleTo, so
// building it pins that ReadStoreSnapshot, WriteRecord and WriteDocument, and CultCodec.DecodeDocument, are public API.
var storePath = System.IO.Path.Combine(System.IO.Path.GetTempPath(), "consumer-build-" + System.Guid.NewGuid().ToString("N") + ".cc");
try
{
    var entry = new CultSchemaCatalogEntry { SchemaId = "outside.written", SchemaName = "outside.written" };
    var store = new GameCult.Caching.MessagePack.SingleFileMessagePackBackingStore(storePath);
    store.WriteRecord(new CultPersistedRecord { Key = "r", SchemaId = entry.SchemaId, StoredAt = "t", Payload = new byte[] { 0x90 } }, entry);
    var snapshot = store.ReadStoreSnapshot();
    if (snapshot == null || snapshot.Records.Length != 1 || snapshot.Records[0].Key != "r")
        return 1;
    var typedRegistry = CultDocumentRegistry.ForTypes(new[] { typeof(ConsumerFaction) });
    store.WriteDocument(new CultRecordKey("f"), new ConsumerFaction { Name = "typed" }, registry: typedRegistry);
    var typed = store.ReadStoreSnapshot()!.Records.Single(record => record.Key == "f");
    if (GameCult.Caching.MessagePack.CultCacheMessagePack.CreateCodec(typedRegistry).DecodeDocument<ConsumerFaction>(new CultRecordKey("f"), typed.Payload).Name != "typed")
        return 1;
}
finally
{
    System.IO.File.Delete(storePath);
}
return 0;

// Lists one record under an id no type claims, at version "v1", and commits only when the conditions hold over it.
public sealed class OutsideStore : CacheBackingStore
{
    private static readonly CultSchemaCatalogEntry Entry = new() { SchemaId = "outside.unclaimed", SchemaName = "outside.unclaimed" };

    public override void PullAll()
    {
        var record = new CultPersistedRecord { Key = "w", SchemaId = Entry.SchemaId, StoredAt = "t" };
        SetForeignRecords(new[] { Foreign(record, new[] { Entry }, "v1")! });
    }

    public override void Push(CultStoredDocument entry) { }

    public override void Delete(CultStoredDocument entry) { }

    public override void PushAll() { }

    public override CultCommitOutcome CommitBatch(CultCommitRequest request, bool wait) =>
        request.ConditionsHold(new Dictionary<string, string> { ["w"] = "v1" }, Entries.Values, ForeignRecords)
            ? CultCommitOutcome.Committed
            : CultCommitOutcome.Mismatch;
}

[CultDocument("tests.consumer_faction", "tests.consumer_faction.v1")]
[MessagePackObject]
public sealed class ConsumerFaction
{
    [Key(0)] [CultName] public string Name { get; set; } = string.Empty;
    [Key(1)] public Dictionary<CultRecordRef<ConsumerFaction>, float> Standing { get; set; } = new();
}