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Loading a relation set the inverse relation too but json serialization encounters infinite loops.

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This commit is contained in:
Zoe Roux
2021-03-07 01:56:22 +01:00
parent 6bf6746320
commit 9a7b2cb4a1
3 changed files with 75 additions and 32 deletions
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Kyoo.Common/Controllers/Implementations/LibraryManager.cs
+67 -25
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@@ -261,6 +261,14 @@ namespace Kyoo.Controllers
return obj;
}
private async Task SetRelation<T1, T2>(T1 obj, Task<ICollection<T2>> loader, Action<T1, ICollection<T2>> setter, Action<T2, T1> inverse)
{
ICollection<T2> loaded = await loader;
setter(obj, loaded);
foreach (T2 item in loaded)
inverse(item, obj);
}
public Task Load(IResource obj, string member)
{
if (obj == null)
@@ -270,42 +278,57 @@ namespace Kyoo.Controllers
{
(Library l, nameof(Library.Providers)) => ProviderRepository
.GetAll(x => x.Libraries.Any(y => y.ID == obj.ID))
.Then(x => l.Providers = x),
.Then(x => l.Providers = x),
(Library l, nameof(Library.Shows)) => ShowRepository
.GetAll(x => x.Libraries.Any(y => y.ID == obj.ID))
.Then(x => l.Shows = x),
(Library l, nameof(Library.Collections)) => CollectionRepository
.GetAll(x => x.Libraries.Any(y => y.ID == obj.ID))
.Then(x => l.Collections = x),
(Collection c, nameof(Library.Shows)) => ShowRepository
.GetAll(x => x.Collections.Any(y => y.ID == obj.ID))
.Then(x => c.Shows = x),
(Collection c, nameof(Collection.Libraries)) => LibraryRepository
.GetAll(x => x.Collections.Any(y => y.ID == obj.ID))
.Then(x => c.Libraries = x),
(Show s, nameof(Show.ExternalIDs)) => ProviderRepository
.GetMetadataID(x => x.ShowID == obj.ID)
.Then(x => s.ExternalIDs = x),
(Show s, nameof(Show.ExternalIDs)) => SetRelation(s,
ProviderRepository.GetMetadataID(x => x.ShowID == obj.ID),
(x, y) => x.ExternalIDs = y,
(x, y) => x.Show = y),
(Show s, nameof(Show.Genres)) => GenreRepository
.GetAll(x => x.Shows.Any(y => y.ID == obj.ID))
.Then(x => s.Genres = x),
(Show s, nameof(Show.People)) => PeopleRepository
.GetFromShow(obj.ID)
.Then(x => s.People = x),
(Show s, nameof(Show.Seasons)) => SeasonRepository
.GetAll(x => x.Show.ID == obj.ID)
.Then(x => s.Seasons = x),
(Show s, nameof(Show.Episodes)) => EpisodeRepository
.GetAll(x => x.Show.ID == obj.ID)
.Then(x => s.Episodes = x),
(Show s, nameof(Show.Seasons)) => SetRelation(s,
SeasonRepository.GetAll(x => x.Show.ID == obj.ID),
(x, y) => x.Seasons = y,
(x, y) => { x.Show = y; x.ShowID = y.ID; }),
(Show s, nameof(Show.Episodes)) => SetRelation(s,
EpisodeRepository.GetAll(x => x.Show.ID == obj.ID),
(x, y) => x.Episodes = y,
(x, y) => { x.Show = y; x.ShowID = y.ID; }),
(Show s, nameof(Show.Libraries)) => LibraryRepository
.GetAll(x => x.Shows.Any(y => y.ID == obj.ID))
.Then(x => s.Libraries = x),
(Show s, nameof(Show.Collections)) => CollectionRepository
.GetAll(x => x.Shows.Any(y => y.ID == obj.ID))
.Then(x => s.Collections = x),
(Show s, nameof(Show.Studio)) => StudioRepository
.Get(x => x.Shows.Any(y => y.ID == obj.ID))
.Then(x =>
@@ -314,12 +337,17 @@ namespace Kyoo.Controllers
s.StudioID = x?.ID ?? 0;
}),
(Season s, nameof(Season.ExternalIDs)) => ProviderRepository
.GetMetadataID(x => x.SeasonID == obj.ID)
.Then(x => s.ExternalIDs = x),
(Season s, nameof(Season.Episodes)) => EpisodeRepository
.GetAll(x => x.Season.ID == obj.ID)
.Then(x => s.Episodes = x),
(Season s, nameof(Season.ExternalIDs)) => SetRelation(s,
ProviderRepository.GetMetadataID(x => x.SeasonID == obj.ID),
(x, y) => x.ExternalIDs = y,
(x, y) => { x.Season = y; x.SeasonID = y.ID; }),
(Season s, nameof(Season.Episodes)) => SetRelation(s,
EpisodeRepository.GetAll(x => x.Season.ID == obj.ID),
(x, y) => x.Episodes = y,
(x, y) => { x.Season = y; x.SeasonID = y.ID; }),
(Season s, nameof(Season.Show)) => ShowRepository
.Get(x => x.Seasons.Any(y => y.ID == obj.ID))
.Then(x =>
@@ -328,12 +356,17 @@ namespace Kyoo.Controllers
s.ShowID = x?.ID ?? 0;
}),
(Episode e, nameof(Episode.ExternalIDs)) => ProviderRepository
.GetMetadataID(x => x.EpisodeID == obj.ID)
.Then(x => e.ExternalIDs = x),
(Episode e, nameof(Episode.Tracks)) => TrackRepository
.GetAll(x => x.Episode.ID == obj.ID)
.Then(x => e.Tracks = x),
(Episode e, nameof(Episode.ExternalIDs)) => SetRelation(e,
ProviderRepository.GetMetadataID(x => x.EpisodeID == obj.ID),
(x, y) => x.ExternalIDs = y,
(x, y) => { x.Episode = y; x.EpisodeID = y.ID; }),
(Episode e, nameof(Episode.Tracks)) => SetRelation(e,
TrackRepository.GetAll(x => x.Episode.ID == obj.ID),
(x, y) => x.Tracks = y,
(x, y) => { x.Episode = y; x.EpisodeID = y.ID; }),
(Episode e, nameof(Episode.Show)) => ShowRepository
.Get(x => x.Episodes.Any(y => y.ID == obj.ID))
.Then(x =>
@@ -341,6 +374,7 @@ namespace Kyoo.Controllers
e.Show = x;
e.ShowID = x?.ID ?? 0;
}),
(Episode e, nameof(Episode.Season)) => SeasonRepository
.Get(x => x.Episodes.Any(y => y.ID == e.ID))
.Then(x =>
@@ -349,6 +383,7 @@ namespace Kyoo.Controllers
e.SeasonID = x?.ID ?? 0;
}),
(Track t, nameof(Track.Episode)) => EpisodeRepository
.Get(x => x.Tracks.Any(y => y.ID == obj.ID))
.Then(x =>
@@ -357,24 +392,31 @@ namespace Kyoo.Controllers
t.EpisodeID = x?.ID ?? 0;
}),
(Genre g, nameof(Genre.Shows)) => ShowRepository
.GetAll(x => x.Genres.Any(y => y.ID == obj.ID))
.Then(x => g.Shows = x),
(Studio s, nameof(Studio.Shows)) => ShowRepository
.GetAll(x => x.Studio.ID == obj.ID)
.Then(x => s.Shows = x),
(People p, nameof(People.ExternalIDs)) => ProviderRepository
.GetMetadataID(x => x.PeopleID == obj.ID)
.Then(x => p.ExternalIDs = x),
(People p, nameof(People.ExternalIDs)) => SetRelation(p,
ProviderRepository.GetMetadataID(x => x.PeopleID == obj.ID),
(x, y) => x.ExternalIDs = y,
(x, y) => { x.People = y; x.PeopleID = y.ID; }),
(People p, nameof(People.Roles)) => PeopleRepository
.GetFromPeople(obj.ID)
.Then(x => p.Roles = x),
(ProviderID p, nameof(ProviderID.Libraries)) => LibraryRepository
.GetAll(x => x.Providers.Any(y => y.ID == obj.ID))
.Then(x => p.Libraries = x),
_ => throw new ArgumentException($"Couldn't find a way to load {member} of {obj.Slug}.")
};