Added database size estimation

src/Server/Helper/DatabaseHelper.cs

@@ -177,4 +177,38 @@ public class DatabaseHelper(ILogger<DatabaseHelper> logger)
             return result;
         }
     }
+
+    public static long GetSearchdomainDatabaseSize(SQLHelper helper, string searchdomain)
+    {
+        Dictionary<string, dynamic> parameters = new()
+        {
+            { "searchdomain", searchdomain}
+        };
+        DbDataReader searchdomainSumReader = helper.ExecuteSQLCommand("SELECT SUM(LENGTH(id) + LENGTH(name) + LENGTH(settings)) AS total_bytes FROM embeddingsearch.searchdomain WHERE name=@searchdomain", parameters);
+        bool success = searchdomainSumReader.Read();
+        long result = success && !searchdomainSumReader.IsDBNull(0) ? searchdomainSumReader.GetInt64(0) : 0;
+        searchdomainSumReader.Close();
+
+        DbDataReader entitySumReader = helper.ExecuteSQLCommand("SELECT SUM(LENGTH(e.id) + LENGTH(e.name) + LENGTH(e.probmethod) + LENGTH(e.id_searchdomain)) AS total_bytes FROM embeddingsearch.entity e JOIN embeddingsearch.searchdomain s ON e.id_searchdomain = s.id WHERE s.name=@searchdomain", parameters);
+        success = entitySumReader.Read();
+        result += success && !entitySumReader.IsDBNull(0) ? entitySumReader.GetInt64(0) : 0;
+        entitySumReader.Close();
+
+        DbDataReader datapointSumReader = helper.ExecuteSQLCommand("SELECT SUM(LENGTH(d.id) + LENGTH(d.name) + LENGTH(d.probmethod_embedding) + LENGTH(d.similaritymethod) + LENGTH(d.id_entity) + LENGTH(d.hash)) AS total_bytes FROM embeddingsearch.datapoint d JOIN embeddingsearch.entity e ON d.id_entity = e.id JOIN embeddingsearch.searchdomain s ON e.id_searchdomain = s.id WHERE s.name=@searchdomain", parameters);
+        success = datapointSumReader.Read();
+        result += success && !datapointSumReader.IsDBNull(0) ? datapointSumReader.GetInt64(0) : 0;
+        datapointSumReader.Close();
+
+        DbDataReader embeddingSumReader = helper.ExecuteSQLCommand("SELECT SUM(LENGTH(em.id) + LENGTH(em.id_datapoint) + LENGTH(em.model) + LENGTH(em.embedding)) AS total_bytes FROM embeddingsearch.embedding em JOIN embeddingsearch.datapoint d ON em.id_datapoint = d.id JOIN embeddingsearch.entity e ON d.id_entity = e.id JOIN embeddingsearch.searchdomain s ON e.id_searchdomain = s.id WHERE s.name=@searchdomain", parameters);
+        success = embeddingSumReader.Read();
+        result += success && !embeddingSumReader.IsDBNull(0) ? embeddingSumReader.GetInt64(0) : 0;
+        embeddingSumReader.Close();
+
+        DbDataReader attributeSumReader = helper.ExecuteSQLCommand("SELECT SUM(LENGTH(a.id) + LENGTH(a.id_entity) + LENGTH(a.attribute) + LENGTH(a.value)) AS total_bytes FROM embeddingsearch.attribute a JOIN embeddingsearch.entity e ON a.id_entity = e.id JOIN embeddingsearch.searchdomain s ON e.id_searchdomain = s.id WHERE s.name=@searchdomain", parameters);
+        success = attributeSumReader.Read();
+        result += success && !attributeSumReader.IsDBNull(0) ? attributeSumReader.GetInt64(0) : 0;
+        attributeSumReader.Close();
+
+        return result;
+    } 
 }