Removed CLI project, added database migrations, added SQLHelper

2025-06-06 00:29:38 +02:00
parent 89545b0d71
commit ad599433bf
10 changed files with 152 additions and 555 deletions
--- a/src/Server/Migrations/DatabaseMigrations.cs
+++ b/src/Server/Migrations/DatabaseMigrations.cs
@@ -0,0 +1,69 @@
+using System.Data.Common;
+using Server.Exceptions;
+
+namespace Server.Migrations;
+
+public static class DatabaseMigrations
+{
+    public static void Migrate(SQLHelper helper)
+    {
+        int databaseVersion = DatabaseGetVersion(helper);
+        switch (databaseVersion)
+        {
+            case 0:
+                databaseVersion = Create(helper);
+                goto case 1; // Here lies a dead braincell.
+            case 1:
+                databaseVersion = UpdateFrom1(helper); // TODO: Implement reflection based dynamic invocation.
+                goto case 2;
+            case 2:
+            default:
+                break;
+        }
+    }
+    public static int DatabaseGetVersion(SQLHelper helper)
+    {
+        DbDataReader reader = helper.ExecuteSQLCommand("show tables", []);
+        bool hasTables = reader.Read();
+        reader.Close();
+        if (!hasTables)
+        {
+            return 0;
+        }
+
+        reader = helper.ExecuteSQLCommand("show tables like '%settings%'", []);
+        bool hasSystemTable = reader.Read();
+        reader.Close();
+        if (!hasSystemTable)
+        {
+            return 1;
+        }
+        reader = helper.ExecuteSQLCommand("SELECT value FROM settings WHERE name=\"DatabaseVersion\"", []);
+        reader.Read();
+        string rawVersion = reader.GetString(0);
+        reader.Close();
+        bool success = int.TryParse(rawVersion, out int version);
+        if (!success)
+        {
+            throw new DatabaseVersionException();
+        }
+        return version;
+    }
+
+    public static int Create(SQLHelper helper)
+    {
+        helper.ExecuteSQLNonQuery("CREATE TABLE searchdomain (id int PRIMARY KEY auto_increment, name varchar(512), settings JSON);", []);
+        helper.ExecuteSQLNonQuery("CREATE TABLE entity (id int PRIMARY KEY auto_increment, name varchar(512), probmethod varchar(128), id_searchdomain int, FOREIGN KEY (id_searchdomain) REFERENCES searchdomain(id));", []);
+        helper.ExecuteSQLNonQuery("CREATE TABLE attribute (id int PRIMARY KEY auto_increment, id_entity int, attribute varchar(512), value longtext, FOREIGN KEY (id_entity) REFERENCES entity(id));", []);
+        helper.ExecuteSQLNonQuery("CREATE TABLE datapoint (id int PRIMARY KEY auto_increment, name varchar(512), probmethod_embedding varchar(512), id_entity int, FOREIGN KEY (id_entity) REFERENCES entity(id));", []);
+        helper.ExecuteSQLNonQuery("CREATE TABLE embedding (id int PRIMARY KEY auto_increment, id_datapoint int, model varchar(512), embedding blob, FOREIGN KEY (id_datapoint) REFERENCES datapoint(id));", []);
+        return 1;
+    }
+
+    public static int UpdateFrom1(SQLHelper helper)
+    {
+        helper.ExecuteSQLNonQuery("CREATE TABLE settings (name varchar(512), value varchar(8192));", []);
+        helper.ExecuteSQLNonQuery("INSERT INTO settings (name, value) VALUES (\"DatabaseVersion\", \"2\");", []);
+        return 2;
+    }
+}