Added new moderator notes system.

database/2023_07_24_201010_add_moderator_notes_table.php

@@ -0,0 +1,46 @@
+<?php
+use Index\Data\IDbConnection;
+use Index\Data\Migration\IDbMigration;
+
+final class AddModeratorNotesTable_20230724_201010 implements IDbMigration {
+    public function migrate(IDbConnection $conn): void {
+        $conn->execute('
+            CREATE TABLE msz_users_modnotes (
+                note_id      INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
+                user_id      INT(10) UNSIGNED NOT NULL,
+                author_id    INT(10) UNSIGNED     NULL DEFAULT NULL,
+                note_created TIMESTAMP        NOT NULL DEFAULT current_timestamp(),
+                note_title   VARCHAR(255)     NOT NULL,
+                note_body    TEXT             NOT NULL,
+                PRIMARY KEY (note_id),
+                KEY users_modnotes_user_foreign   (user_id),
+                KEY users_modnotes_author_foreign (author_id),
+                KEY users_modnotes_created_index  (note_created),
+                CONSTRAINT users_modnotes_user_foreign
+                    FOREIGN KEY (user_id)
+                    REFERENCES msz_users (user_id)
+                    ON UPDATE CASCADE
+                    ON DELETE CASCADE,
+                CONSTRAINT users_modnotes_author_foreign
+                    FOREIGN KEY (author_id)
+                    REFERENCES msz_users (user_id)
+                    ON UPDATE CASCADE
+                    ON DELETE SET NULL
+            ) ENGINE=InnoDB COLLATE=utf8mb4_bin
+        ');
+
+        // migrate existing notes
+        $conn->execute('
+            INSERT INTO msz_users_modnotes (user_id, author_id, note_created, note_title, note_body)
+            SELECT user_id, issuer_id, warning_created, warning_note, COALESCE(warning_note_private, "")
+            FROM msz_user_warnings
+            WHERE warning_type = 0
+        ');
+
+        // delete notes from the warnings table
+        $conn->execute('DELETE FROM msz_user_warnings WHERE warning_type = 0');
+
+        // for good measure update silences to bans since i forgot to do that as a migration
+        $conn->execute('UPDATE msz_user_warnings SET warning_type = 3 WHERE warning_type = 2');
+    }
+}