Added new banning system.

it actually works and isn't confusing this time around!

database/2023_07_26_175936_add_new_bans_table.php

@@ -0,0 +1,45 @@
+<?php
+use Index\Data\IDbConnection;
+use Index\Data\Migration\IDbMigration;
+
+final class AddNewBansTable_20230726_175936 implements IDbMigration {
+    public function migrate(IDbConnection $conn): void {
+        $conn->execute('
+            CREATE TABLE msz_users_bans (
+                ban_id             INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
+                user_id            INT(10) UNSIGNED NOT NULL,
+                mod_id             INT(10) UNSIGNED     NULL DEFAULT NULL,
+                ban_severity       TINYINT(4)       NOT NULL,
+                ban_reason_public  TEXT             NOT NULL,
+                ban_reason_private TEXT             NOT NULL,
+                ban_created        TIMESTAMP        NOT NULL DEFAULT current_timestamp(),
+                ban_expires        TIMESTAMP            NULL DEFAULT NULL,
+                PRIMARY KEY (ban_id),
+                KEY users_bans_user_foreign (user_id),
+                KEY users_bans_mod_foreign (mod_id),
+                KEY users_bans_created_index (ban_created),
+                KEY users_bans_expires_index (ban_expires),
+                KEY users_bans_severity_index (ban_severity),
+                CONSTRAINT users_bans_users_foreign
+                    FOREIGN KEY (user_id)
+                    REFERENCES msz_users (user_id)
+                    ON UPDATE CASCADE
+                    ON DELETE CASCADE,
+                CONSTRAINT users_bans_mod_foreign
+                    FOREIGN KEY (mod_id)
+                    REFERENCES msz_users (user_id)
+                    ON UPDATE CASCADE
+                    ON DELETE SET NULL
+            ) ENGINE=InnoDB COLLATE=utf8mb4_bin
+        ');
+
+        $conn->execute('
+            INSERT INTO msz_users_bans (user_id, mod_id, ban_severity, ban_reason_public, ban_reason_private, ban_created, ban_expires)
+            SELECT user_id, issuer_id, 0, warning_note, COALESCE(warning_note_private, ""), warning_created, warning_duration
+            FROM msz_user_warnings
+            WHERE warning_type = 3
+        ');
+
+        $conn->execute('DELETE FROM msz_user_warnings WHERE warning_type = 3');
+    }
+}