feat(sentiment): add persistent sentiment entities, summaries, SentimentDbService and MQTT RPC refactoring

FinlyticSentiment/Database/SentimentDbContext.cs

@@ -7,7 +7,7 @@ using Microsoft.EntityFrameworkCore.Design;
 namespace FinlyticSentiment.Database;
 
 /// <summary>
-/// EF Core DbContext for managing FinlyticSentiment settings in PostgreSQL.
+/// EF Core DbContext for managing FinlyticSentiment persistent entities and dynamic settings.
 /// </summary>
 public class SentimentDbContext : DbContext, ISettingsDbContext
 {
@@ -16,24 +16,50 @@ public class SentimentDbContext : DbContext, ISettingsDbContext
     }
 
     public DbSet<SettingEntity> DynamicSettings => Set<SettingEntity>();
-    public DbSet<SentimentSettingsEntity> Settings => Set<SentimentSettingsEntity>();
+    public DbSet<ArticleSentimentEntity> ArticleSentiments => Set<ArticleSentimentEntity>();
+    public DbSet<CompanySentimentSummaryEntity> CompanySentiments => Set<CompanySentimentSummaryEntity>();
+    public DbSet<SectorSentimentSummaryEntity> SectorSentiments => Set<SectorSentimentSummaryEntity>();
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         base.OnModelCreating(modelBuilder);
 
+        // Dynamic Settings
         modelBuilder.Entity<SettingEntity>(entity =>
         {
             entity.HasKey(e => e.Id);
             entity.HasIndex(e => e.Key).IsUnique();
         });
 
-        modelBuilder.Entity<SentimentSettingsEntity>(entity =>
+        // Individual Article Sentiments
+        modelBuilder.Entity<ArticleSentimentEntity>(entity =>
         {
-            entity.ToTable("sentiment_settings");
             entity.HasKey(e => e.Id);
-            entity.Property(e => e.GermanWebhookUrl).HasMaxLength(500);
-            entity.Property(e => e.EnglishWebhookUrl).HasMaxLength(500);
+
+            // Prevent duplicate analysis of the same article for the same asset
+            entity.HasIndex(e => new { e.ArticleId, e.Isin }).IsUnique();
+
+            // High-performance time-series index for timeline charts & time-decay scans
+            entity.HasIndex(e => new { e.Isin, e.PublishedAtUtc });
+
+            entity.HasIndex(e => e.AnalyzedAtUtc);
+            entity.HasIndex(e => e.Sector);
+        });
+
+        // Pre-Aggregated Company Sentiment Summaries
+        modelBuilder.Entity<CompanySentimentSummaryEntity>(entity =>
+        {
+            entity.HasKey(e => e.Isin);
+            entity.HasIndex(e => e.Sector);
+            entity.HasIndex(e => e.WeightedScore);
+            entity.HasIndex(e => e.LastUpdatedUtc);
+        });
+
+        // Pre-Aggregated Sector Sentiment Summaries
+        modelBuilder.Entity<SectorSentimentSummaryEntity>(entity =>
+        {
+            entity.HasKey(e => e.Sector);
+            entity.HasIndex(e => e.LastUpdatedUtc);
         });
     }
 }