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Cursor Agentandrmcrackan
818510d1b0
Records every successful audiobook download in the library database (a new DownloadHistory table) and, when the user opts in, stops downloading once the rolling 24 hour window is full. The history lives in the database rather than a file under LibationFiles because in Docker only the database is on a volume; a file there is discarded on every container restart. The limit is checked immediately before each book downloads, never at queueing time, so a full queue stays full and the user can raise or disable the limit mid-run. When nothing in the queue can proceed the queue pauses and re-checks every 15 seconds, recomputing settings, history and clock from scratch, so a queue left running for days drip-feeds itself as downloads age out. The CLI never waits: it skips covered titles and reports a count. Co-authored-by: rmcrackan <rmcrackan@gmail.com>
66 lines
2.8 KiB
C#
66 lines
2.8 KiB
C#
using DataLayer.Configurations;
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using Microsoft.EntityFrameworkCore;
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using System;
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using System.Threading.Tasks;
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namespace DataLayer;
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public class LibationContext : DbContext, INotifyDisposed
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{
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// IMPORTANT: USING DbSet<>
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// ========================
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// these run against the db. linq queries against these MUST be translatable to sql. primatives only. no POCOs or this error occurs:
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// Unable to create a constant value of type 'DataLayer.Contributor'. Only primitive types or enumeration types are supported in this context.
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// to use full object-linq, load and use Local. HOWEVER, Local is only hashed/indexed on PK. All other searches are very slow
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// load full table:
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// List<Contributor> contributors = ...;
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// Contributors.Load();
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// Contributors.Local.Where(a => contributors.Contains(a));
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// load only those in object:
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// // overwrite collection
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// Entry(product).Collection(x => x.Narrators).Load();
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// product.Narrators = narrators;
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public DbSet<LibraryBook> LibraryBooks { get; private set; }
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public DbSet<Book> Books { get; private set; }
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public DbSet<Contributor> Contributors { get; private set; }
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public DbSet<Series> Series { get; private set; }
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public DbSet<Category> Categories { get; private set; }
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public DbSet<CategoryLadder> CategoryLadders { get; private set; }
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public DbSet<DownloadHistory> DownloadHistory { get; private set; }
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public event EventHandler? ObjectDisposed;
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public override void Dispose()
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{
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base.Dispose();
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ObjectDisposed?.Invoke(this, EventArgs.Empty);
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}
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public override async ValueTask DisposeAsync()
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{
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await base.DisposeAsync();
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ObjectDisposed?.Invoke(this, EventArgs.Empty);
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}
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// see DesignTimeDbContextFactoryBase for info about ctors and connection strings/OnConfiguring()
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public LibationContext(DbContextOptions options) : base(options) { }
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// typically only called once per execution; NOT once per instantiation
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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base.OnModelCreating(modelBuilder);
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modelBuilder.ApplyConfiguration(new BookConfig());
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modelBuilder.ApplyConfiguration(new ContributorConfig());
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modelBuilder.ApplyConfiguration(new BookContributorConfig());
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modelBuilder.ApplyConfiguration(new LibraryBookConfig());
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modelBuilder.ApplyConfiguration(new SeriesConfig());
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modelBuilder.ApplyConfiguration(new SeriesBookConfig());
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modelBuilder.ApplyConfiguration(new CategoryConfig());
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modelBuilder.ApplyConfiguration(new CategoryLadderConfig());
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modelBuilder.ApplyConfiguration(new BookCategoryConfig());
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modelBuilder.ApplyConfiguration(new DownloadHistoryConfig());
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// views are now supported via "keyless entity types" (instead of "entity types" or the prev "query types"):
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// https://docs.microsoft.com/en-us/ef/core/modeling/keyless-entity-types
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}
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}
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