timothyandClaude Opus 4.8
e364b338e6
Auto-tune channels can now carry per-content-source rotation weights (weighted
round-robin, e.g. 3x Show A / 1x Show B) and query corrections (exclude /
add-untagged), supplied at bulk-create time via an optional
`sources: [{sourceId, weight, excluded}]` on each AutoTunedChannelRequest.
Design (Option A, reuse #70): when a source is customized the channel is backed
by a system-owned MultiCollection of per-source SmartCollections carrying the
weights, with PlaybackOrder.WeightedShuffle -- the exact path
WeightedShuffleCollectionEnumerator already consumes. All-default weights keep
the #69 single-SmartCollection fair-share shape.
- Discriminators: TV -> live show_title:"X" (episodes carry no parent-show id in
the index); movies -> stable id:{mediaItemId}.
- Materialization is axis-dependent: TV materializes every base show individually
(un-weighted shows keep per-show fair-share) + a live remainder at weight 1;
MovieGenre materializes only touched movies + one count-weighted remainder.
- Remainder = (base) AND NOT (materialized union excluded) -- a partition.
- New nullable OwnedByChannelId on SmartCollection + MultiCollection
(dual-provider migration); owned rows are hidden from the collection lists and
cascade-cleaned on channel delete.
Tests: AutoTuneAxisMap query/partition units; DB-backed weighted-path handler
tests (TV materialize-all, movie count-remainder, exclusion, no-customization
fallback); delete-cleanup. Docs: decisions.md, domain-model.md, api-conventions.md;
OpenAPI trio regenerated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
69 lines
3.0 KiB
C#
69 lines
3.0 KiB
C#
using ErsatzTV.Core.Domain;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.Metadata.Builders;
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namespace ErsatzTV.Infrastructure.Data.Configurations;
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public class MultiCollectionConfiguration : IEntityTypeConfiguration<MultiCollection>
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{
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public void Configure(EntityTypeBuilder<MultiCollection> builder)
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{
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builder.ToTable("MultiCollection");
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builder.Property(mc => mc.Version).IsConcurrencyToken();
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builder.Property(mc => mc.Name)
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.HasMaxLength(50)
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.HasColumnType("varchar(50)");
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builder.HasIndex(mc => mc.Name)
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.IsUnique();
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// Cleanup + list-hiding of the system multi collection an auto-tune weighted channel owns (#425).
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// Nullable: null = a normal user multi collection.
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builder.HasIndex(mc => mc.OwnedByChannelId);
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builder.HasMany(m => m.Collections)
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.WithMany(m => m.MultiCollections)
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.UsingEntity<MultiCollectionItem>(
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j => j.HasOne(mci => mci.Collection)
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.WithMany(c => c.MultiCollectionItems)
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.HasForeignKey(mci => mci.CollectionId)
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.OnDelete(DeleteBehavior.Cascade),
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j => j.HasOne(mci => mci.MultiCollection)
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.WithMany(mc => mc.MultiCollectionItems)
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.HasForeignKey(mci => mci.MultiCollectionId)
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.OnDelete(DeleteBehavior.Cascade),
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j =>
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{
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j.HasKey(mci => new { mci.MultiCollectionId, mci.CollectionId });
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// default 1 = fair share (#70). Must be a DB default too, or existing rows migrate to 0 --
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// a value that means nothing on a share-of-airtime scale. The enumerator clamps such a
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// row to the floor, so it rotates rather than vanishing; the backfill should still be
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// right at the source.
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j.Property(mci => mci.Weight).HasDefaultValue(1);
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});
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builder.HasMany(m => m.SmartCollections)
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.WithMany(m => m.MultiCollections)
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.UsingEntity<MultiCollectionSmartItem>(
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j => j.HasOne(mci => mci.SmartCollection)
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.WithMany(c => c.MultiCollectionSmartItems)
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.HasForeignKey(mci => mci.SmartCollectionId)
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.OnDelete(DeleteBehavior.Cascade),
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j => j.HasOne(mci => mci.MultiCollection)
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.WithMany(mc => mc.MultiCollectionSmartItems)
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.HasForeignKey(mci => mci.MultiCollectionId)
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.OnDelete(DeleteBehavior.Cascade),
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j =>
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{
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j.HasKey(mci => new { mci.MultiCollectionId, mci.SmartCollectionId });
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// mirrors MultiCollectionItem above -- omitting it would silently un-weight
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// every smart-collection member of a multi collection
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j.Property(mci => mci.Weight).HasDefaultValue(1);
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});
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}
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}
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