Removed the existing, broken follow system.

database/2021_08_28_220000_nuke_relations_table.php

@@ -0,0 +1,33 @@
+<?php
+namespace Misuzu\DatabaseMigrations\NukeRelationsTable;
+
+use PDO;
+
+function migrate_up(PDO $conn): void {
+    $conn->exec("DROP TABLE `msz_user_relations`");
+}
+
+function migrate_down(PDO $conn): void {
+    $conn->exec("
+        CREATE TABLE `msz_user_relations` (
+            `user_id`           INT(10) UNSIGNED    NOT NULL,
+            `subject_id`        INT(10) UNSIGNED    NOT NULL,
+            `relation_type`     TINYINT(3) UNSIGNED NOT NULL,
+            `relation_created`  TIMESTAMP           NOT NULL DEFAULT current_timestamp(),
+            UNIQUE INDEX `user_relations_unique` (`user_id`, `subject_id`) USING BTREE,
+            INDEX `user_relations_subject_id_foreign` (`subject_id`) USING BTREE,
+            INDEX `user_relations_type_index` (`relation_type`) USING BTREE,
+            INDEX `user_relations_created_index` (`relation_created`) USING BTREE,
+            CONSTRAINT `user_relations_subject_id_foreign`
+                FOREIGN KEY (`subject_id`)
+                REFERENCES `msz_users` (`user_id`)
+                ON UPDATE CASCADE
+                ON DELETE CASCADE,
+            CONSTRAINT `user_relations_user_id_foreign`
+                FOREIGN KEY (`user_id`)
+                REFERENCES `msz_users` (`user_id`)
+                ON UPDATE CASCADE
+                ON DELETE CASCADE
+        ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
+    ");
+}