From 9efe8e6853af092e43fc27babeec7f6f1fb1cffa Mon Sep 17 00:00:00 2001
From: flashwave <me@flash.moe>
Date: Sun, 1 Jan 2023 03:42:18 +0000
Subject: [PATCH] Removed support for rolling back database migrations.

---
 .../2019_05_01_200400_initial_structure.php   | 31 --------
 ..._05_05_163101_add_forum_category_icons.php |  7 --
 ...05_07_090631_create_feature_forum_type.php |  6 --
 ...19_07_04_175010_create_emoticons_table.php |  6 --
 .../2019_08_14_194510_create_config_table.php |  4 -
 ...0_01_181738_profile_fields_in_database.php | 36 ---------
 ...2019_12_08_181735_emoticon_restructure.php | 11 ---
 ...9_12_14_005624_added_chat_tokens_table.php |  4 -
 ...020_05_21_145756_audit_log_table_fixes.php |  9 ---
 ...5_25_133726_login_attempts_table_fixes.php |  9 ---
 ...2020_05_25_152331_sessions_table_fixes.php |  9 ---
 .../2020_05_27_134934_add_missing_indexes.php | 31 --------
 ...2020_05_29_142907_recovery_table_fixes.php | 12 ---
 ...9_190810_case_insensitive_forum_search.php | 12 ---
 ..._05_30_142750_add_owner_id_to_comments.php |  9 ---
 ...2021_08_28_220000_nuke_relations_table.php | 25 -------
 ...22_01_13_005600_nuke_chat_tokens_table.php | 18 -----
 src/Console/Commands/MigrateCommand.php       | 23 +++---
 src/Console/Commands/NewMigrationCommand.php  |  6 --
 src/Database/DatabaseMigrationManager.php     | 73 -------------------
 20 files changed, 12 insertions(+), 329 deletions(-)

diff --git a/database/2019_05_01_200400_initial_structure.php b/database/2019_05_01_200400_initial_structure.php
index bfc9068..62bf8d1 100644
--- a/database/2019_05_01_200400_initial_structure.php
+++ b/database/2019_05_01_200400_initial_structure.php
@@ -671,34 +671,3 @@ function migrate_up(PDO $conn): void {
         ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("DROP TABLE `msz_forum_posts`");
-    $conn->exec("DROP TABLE `msz_forum_topics_track`");
-    $conn->exec("DROP TABLE `msz_forum_topics`");
-    $conn->exec("DROP TABLE `msz_forum_permissions`");
-    $conn->exec("DROP TABLE `msz_forum_categories`");
-    $conn->exec("DROP TABLE `msz_forum_polls_answers`");
-    $conn->exec("DROP TABLE `msz_forum_polls_options`");
-    $conn->exec("DROP TABLE `msz_forum_polls`");
-    $conn->exec("DROP TABLE `msz_changelog_change_tags`");
-    $conn->exec("DROP TABLE `msz_changelog_changes`");
-    $conn->exec("DROP TABLE `msz_changelog_tags`");
-    $conn->exec("DROP TABLE `msz_news_posts`");
-    $conn->exec("DROP TABLE `msz_news_categories`");
-    $conn->exec("DROP TABLE `msz_comments_votes`");
-    $conn->exec("DROP TABLE `msz_comments_posts`");
-    $conn->exec("DROP TABLE `msz_comments_categories`");
-    $conn->exec("DROP TABLE `msz_login_attempts`");
-    $conn->exec("DROP TABLE `msz_auth_tfa`");
-    $conn->exec("DROP TABLE `msz_audit_log`");
-    $conn->exec("DROP TABLE `msz_permissions`");
-    $conn->exec("DROP TABLE `msz_sessions`");
-    $conn->exec("DROP TABLE `msz_user_warnings`");
-    $conn->exec("DROP TABLE `msz_user_relations`");
-    $conn->exec("DROP TABLE `msz_users_password_resets`");
-    $conn->exec("DROP TABLE `msz_user_roles`");
-    $conn->exec("DROP TABLE `msz_users`");
-    $conn->exec("DROP TABLE `msz_roles`");
-    $conn->exec("DROP TABLE `msz_ip_blacklist`");
-}
diff --git a/database/2019_05_05_163101_add_forum_category_icons.php b/database/2019_05_05_163101_add_forum_category_icons.php
index 168f207..213c7b1 100644
--- a/database/2019_05_05_163101_add_forum_category_icons.php
+++ b/database/2019_05_05_163101_add_forum_category_icons.php
@@ -9,10 +9,3 @@ function migrate_up(PDO $conn): void {
             ADD COLUMN `forum_icon` VARCHAR(50) NULL DEFAULT NULL AFTER `forum_description`;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_forum_categories`
-            DROP COLUMN `forum_icon`;
-    ");
-}
diff --git a/database/2019_05_07_090631_create_feature_forum_type.php b/database/2019_05_07_090631_create_feature_forum_type.php
index f841734..3e714eb 100644
--- a/database/2019_05_07_090631_create_feature_forum_type.php
+++ b/database/2019_05_07_090631_create_feature_forum_type.php
@@ -25,9 +25,3 @@ function migrate_up(PDO $conn): void {
         ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        DROP TABLE `msz_forum_topics_priority`
-    ");
-}
diff --git a/database/2019_07_04_175010_create_emoticons_table.php b/database/2019_07_04_175010_create_emoticons_table.php
index 262edde..3e564de 100644
--- a/database/2019_07_04_175010_create_emoticons_table.php
+++ b/database/2019_07_04_175010_create_emoticons_table.php
@@ -19,9 +19,3 @@ function migrate_up(PDO $conn): void {
         ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        DROP TABLE `msz_emoticons`;
-    ");
-}
diff --git a/database/2019_08_14_194510_create_config_table.php b/database/2019_08_14_194510_create_config_table.php
index 5f0d0b9..e683eb1 100644
--- a/database/2019_08_14_194510_create_config_table.php
+++ b/database/2019_08_14_194510_create_config_table.php
@@ -12,7 +12,3 @@ function migrate_up(PDO $conn): void {
         ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("DROP TABLE `msz_config`;");
-}
diff --git a/database/2019_10_01_181738_profile_fields_in_database.php b/database/2019_10_01_181738_profile_fields_in_database.php
index 78e3fe4..bb13072 100644
--- a/database/2019_10_01_181738_profile_fields_in_database.php
+++ b/database/2019_10_01_181738_profile_fields_in_database.php
@@ -159,39 +159,3 @@ function migrate_up(PDO $conn): void {
             DROP COLUMN `user_lastfm`;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_users`
-            ADD COLUMN `user_website`   VARCHAR(255) NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_background_settings`,
-            ADD COLUMN `user_twitter`   VARCHAR(20)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_website`,
-            ADD COLUMN `user_github`    VARCHAR(40)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_twitter`,
-            ADD COLUMN `user_skype`     VARCHAR(60)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_github`,
-            ADD COLUMN `user_discord`   VARCHAR(40)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_skype`,
-            ADD COLUMN `user_youtube`   VARCHAR(255) NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_discord`,
-            ADD COLUMN `user_steam`     VARCHAR(255) NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_youtube`,
-            ADD COLUMN `user_ninswitch` VARCHAR(14)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_steam`,
-            ADD COLUMN `user_twitchtv`  VARCHAR(30)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_ninswitch`,
-            ADD COLUMN `user_osu`       VARCHAR(20)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_twitchtv`,
-            ADD COLUMN `user_lastfm`    VARCHAR(20)  NOT NULL DEFAULT '' COLLATE 'utf8mb4_bin' AFTER `user_osu`;
-    ");
-
-    $existingFields = $conn->query("
-        SELECT      pfv.`user_id`, pf.`field_key`, pfv.`field_value`
-        FROM        `msz_profile_fields_values` AS pfv
-        LEFT JOIN   `msz_profile_fields` AS pf
-        ON          pf.`field_id` = pfv.`field_id`
-    ");
-
-    $updatePreps = [];
-    foreach($existingFields as $field) {
-        ($updatePreps[$field['field_key']] ?? ($updatePreps[$field['field_key']] = $conn->prepare("UPDATE `msz_users` SET `user_{$field['field_key']}` = :value WHERE `user_id` = :user_id")))->execute([
-            'value' => $field['field_value'],
-            'user_id' => $field['user_id'],
-        ]);
-    }
-
-    $conn->exec("DROP TABLE `msz_profile_fields_values`");
-    $conn->exec("DROP TABLE `msz_profile_fields_formats`");
-    $conn->exec("DROP TABLE `msz_profile_fields`");
-}
diff --git a/database/2019_12_08_181735_emoticon_restructure.php b/database/2019_12_08_181735_emoticon_restructure.php
index f95f211..5be5210 100644
--- a/database/2019_12_08_181735_emoticon_restructure.php
+++ b/database/2019_12_08_181735_emoticon_restructure.php
@@ -73,14 +73,3 @@ function migrate_up(PDO $conn): void {
         }
     }
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec('DROP TABLE `msz_emoticons_strings`');
-    $conn->exec("
-        ALTER TABLE `msz_emoticons`
-            ADD COLUMN `emote_string` VARCHAR(50) NOT NULL COLLATE 'ascii_general_nopad_ci' AFTER `emote_hierarchy`,
-            DROP INDEX `emotes_url`,
-            ADD INDEX `emotes_url` (`emote_url`),
-            ADD UNIQUE INDEX `emote_string` (`emote_url`);
-    ");
-}
diff --git a/database/2019_12_14_005624_added_chat_tokens_table.php b/database/2019_12_14_005624_added_chat_tokens_table.php
index 0161253..769da3b 100644
--- a/database/2019_12_14_005624_added_chat_tokens_table.php
+++ b/database/2019_12_14_005624_added_chat_tokens_table.php
@@ -20,7 +20,3 @@ function migrate_up(PDO $conn): void {
         ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("DROP TABLE `msz_user_chat_tokens`");
-}
diff --git a/database/2020_05_21_145756_audit_log_table_fixes.php b/database/2020_05_21_145756_audit_log_table_fixes.php
index 7dbf4b3..580fdc0 100644
--- a/database/2020_05_21_145756_audit_log_table_fixes.php
+++ b/database/2020_05_21_145756_audit_log_table_fixes.php
@@ -10,12 +10,3 @@ function migrate_up(PDO $conn): void {
             ADD INDEX `audit_log_created_index` (`log_created`);
     ');
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_audit_log`
-            ADD COLUMN `log_id` INT UNSIGNED NOT NULL AUTO_INCREMENT FIRST,
-            DROP INDEX `audit_log_created_index`,
-            ADD PRIMARY KEY (`log_id`);
-    ");
-}
diff --git a/database/2020_05_25_133726_login_attempts_table_fixes.php b/database/2020_05_25_133726_login_attempts_table_fixes.php
index 5ea464b..6a587e3 100644
--- a/database/2020_05_25_133726_login_attempts_table_fixes.php
+++ b/database/2020_05_25_133726_login_attempts_table_fixes.php
@@ -10,12 +10,3 @@ function migrate_up(PDO $conn): void {
             ADD INDEX `login_attempts_created_index` (`attempt_created`);
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_login_attempts`
-            ADD COLUMN `attempt_id` INT UNSIGNED NOT NULL AUTO_INCREMENT FIRST,
-            DROP INDEX `login_attempts_created_index`,
-            ADD PRIMARY KEY (`attempt_id`);
-    ");
-}
diff --git a/database/2020_05_25_152331_sessions_table_fixes.php b/database/2020_05_25_152331_sessions_table_fixes.php
index 9820beb..7b6b4c3 100644
--- a/database/2020_05_25_152331_sessions_table_fixes.php
+++ b/database/2020_05_25_152331_sessions_table_fixes.php
@@ -11,12 +11,3 @@ function migrate_up(PDO $conn): void {
             ADD INDEX `sessions_created_index` (`session_created`);
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_sessions`
-            CHANGE COLUMN `session_key` `session_key` VARCHAR(255) NOT NULL COLLATE 'utf8mb4_bin' AFTER `user_id`,
-            CHANGE COLUMN `session_expires` `session_expires` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP() ON UPDATE CURRENT_TIMESTAMP() AFTER `session_country`,
-            DROP INDEX `sessions_created_index`;
-    ");
-}
diff --git a/database/2020_05_27_134934_add_missing_indexes.php b/database/2020_05_27_134934_add_missing_indexes.php
index 0f1a04b..e6d0285 100644
--- a/database/2020_05_27_134934_add_missing_indexes.php
+++ b/database/2020_05_27_134934_add_missing_indexes.php
@@ -33,34 +33,3 @@ function migrate_up(PDO $conn): void {
             ADD INDEX `user_relations_created_index` (`relation_created`);
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_forum_categories`
-            DROP INDEX `forum_link_clicks_index`,
-            DROP INDEX `forum_hidden_index`;
-    ");
-
-    $conn->exec("
-        ALTER TABLE `msz_login_attempts`
-            DROP INDEX `login_attempts_success_index`,
-            DROP INDEX `login_attempts_ip_index`;
-    ");
-
-    $conn->exec("
-        ALTER TABLE `msz_news_categories`
-            DROP INDEX `news_categories_is_hidden_index`;
-    ");
-
-    $conn->exec("
-        ALTER TABLE `msz_roles`
-            DROP INDEX `roles_hierarchy_index`,
-            DROP INDEX `roles_hidden_index`;
-    ");
-
-    $conn->exec("
-        ALTER TABLE `msz_user_relations`
-            DROP INDEX `user_relations_type_index`,
-            DROP INDEX `user_relations_created_index`;
-    ");
-}
diff --git a/database/2020_05_29_142907_recovery_table_fixes.php b/database/2020_05_29_142907_recovery_table_fixes.php
index 1f5b0d4..b54b673 100644
--- a/database/2020_05_29_142907_recovery_table_fixes.php
+++ b/database/2020_05_29_142907_recovery_table_fixes.php
@@ -14,15 +14,3 @@ function migrate_up(PDO $conn): void {
             ADD UNIQUE INDEX `users_password_resets_token_unique` (`verification_code`);
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_users_password_resets`
-            CHANGE COLUMN `verification_code` `verification_code` CHAR(12) NULL DEFAULT NULL COLLATE 'utf8mb4_bin' AFTER `reset_requested`,
-            DROP INDEX `users_password_resets_user_unique`,
-            ADD UNIQUE INDEX `msz_users_password_resets_unique` (`user_id`, `reset_ip`),
-            DROP INDEX `users_password_resets_created_index`,
-            ADD INDEX `msz_users_password_resets_index` (`reset_requested`),
-            DROP INDEX `users_password_resets_token_unique`;
-    ");
-}
diff --git a/database/2020_05_29_190810_case_insensitive_forum_search.php b/database/2020_05_29_190810_case_insensitive_forum_search.php
index 2cdca7a..0a11780 100644
--- a/database/2020_05_29_190810_case_insensitive_forum_search.php
+++ b/database/2020_05_29_190810_case_insensitive_forum_search.php
@@ -14,15 +14,3 @@ function migrate_up(PDO $conn): void {
             CHANGE COLUMN `post_text` `post_text` TEXT(65535) NOT NULL COLLATE 'utf8mb4_unicode_ci' AFTER `post_ip`;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_forum_topics`
-            CHANGE COLUMN `topic_title` `topic_title` VARCHAR(255) NOT NULL COLLATE 'utf8mb4_bin' AFTER `topic_type`;
-    ");
-
-    $conn->exec("
-        ALTER TABLE `msz_forum_posts`
-            CHANGE COLUMN `post_text` `post_text` TEXT(65535) NOT NULL COLLATE 'utf8mb4_bin' AFTER `post_ip`;
-    ");
-}
diff --git a/database/2020_05_30_142750_add_owner_id_to_comments.php b/database/2020_05_30_142750_add_owner_id_to_comments.php
index 9130509..396f3fa 100644
--- a/database/2020_05_30_142750_add_owner_id_to_comments.php
+++ b/database/2020_05_30_142750_add_owner_id_to_comments.php
@@ -15,12 +15,3 @@ function migrate_up(PDO $conn): void {
                 ON DELETE SET NULL;
     ");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        ALTER TABLE `msz_comments_categories`
-            DROP COLUMN `owner_id`,
-            DROP INDEX `comments_categories_owner_foreign`,
-            DROP FOREIGN KEY `comments_categories_owner_foreign`;
-    ");
-}
diff --git a/database/2021_08_28_220000_nuke_relations_table.php b/database/2021_08_28_220000_nuke_relations_table.php
index 3311f82..3122b85 100644
--- a/database/2021_08_28_220000_nuke_relations_table.php
+++ b/database/2021_08_28_220000_nuke_relations_table.php
@@ -6,28 +6,3 @@ 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;
-    ");
-}
diff --git a/database/2022_01_13_005600_nuke_chat_tokens_table.php b/database/2022_01_13_005600_nuke_chat_tokens_table.php
index ccc9a04..ce47569 100644
--- a/database/2022_01_13_005600_nuke_chat_tokens_table.php
+++ b/database/2022_01_13_005600_nuke_chat_tokens_table.php
@@ -6,21 +6,3 @@ use PDO;
 function migrate_up(PDO $conn): void {
     $conn->exec("DROP TABLE `msz_user_chat_tokens`");
 }
-
-function migrate_down(PDO $conn): void {
-    $conn->exec("
-        CREATE TABLE `msz_user_chat_tokens` (
-            `user_id`       INT(10) UNSIGNED NOT NULL,
-            `token_string`  CHAR(64) NOT NULL,
-            `token_created` TIMESTAMP NOT NULL DEFAULT current_timestamp(),
-            UNIQUE INDEX `user_chat_token_string_unique` (`token_string`),
-                   INDEX `user_chat_token_user_foreign`  (`user_id`),
-                   INDEX `user_chat_token_created_key`   (`token_created`),
-            CONSTRAINT `user_chat_token_user_foreign`
-                FOREIGN KEY (`user_id`)
-                REFERENCES `msz_users` (`user_id`)
-                ON UPDATE CASCADE
-                ON DELETE CASCADE
-        ) COLLATE='utf8mb4_bin' ENGINE=InnoDB;
-    ");
-}
diff --git a/src/Console/Commands/MigrateCommand.php b/src/Console/Commands/MigrateCommand.php
index 6a4dd45..a5a82d4 100644
--- a/src/Console/Commands/MigrateCommand.php
+++ b/src/Console/Commands/MigrateCommand.php
@@ -24,20 +24,21 @@ class MigrateCommand implements CommandInterface {
             echo $log . PHP_EOL;
         });
 
-        if($args->getArg(0) === 'rollback')
-            $migrationManager->rollback();
-        else
+        if($args->getArg(0) === 'rollback') {
+            echo 'Migration rollback is gone.' . PHP_EOL;
+        } else {
             $migrationManager->migrate();
 
-        $errors = $migrationManager->getErrors();
-        $errorCount = count($errors);
+            $errors = $migrationManager->getErrors();
+            $errorCount = count($errors);
 
-        if($errorCount < 1) {
-            echo 'Completed with no errors!' . PHP_EOL;
-        } else {
-            echo PHP_EOL . "There were {$errorCount} errors during the migrations..." . PHP_EOL;
-            foreach($errors as $error)
-                echo $error . PHP_EOL;
+            if($errorCount < 1) {
+                echo 'Completed with no errors!' . PHP_EOL;
+            } else {
+                echo PHP_EOL . "There were {$errorCount} errors during the migrations..." . PHP_EOL;
+                foreach($errors as $error)
+                    echo $error . PHP_EOL;
+            }
         }
 
         unlink(MSZ_ROOT . '/.migrating');
diff --git a/src/Console/Commands/NewMigrationCommand.php b/src/Console/Commands/NewMigrationCommand.php
index f9df272..7b655d8 100644
--- a/src/Console/Commands/NewMigrationCommand.php
+++ b/src/Console/Commands/NewMigrationCommand.php
@@ -17,12 +17,6 @@ function migrate_up(PDO \$conn): void {
     ");
 }
 
-function migrate_down(PDO \$conn): void {
-    \$conn->exec("
-        DROP TABLE ...
-    ");
-}
-
 MIG;
 
     public function getName(): string {
diff --git a/src/Database/DatabaseMigrationManager.php b/src/Database/DatabaseMigrationManager.php
index 17502d6..44d919d 100644
--- a/src/Database/DatabaseMigrationManager.php
+++ b/src/Database/DatabaseMigrationManager.php
@@ -152,77 +152,4 @@ final class DatabaseMigrationManager {
 
         return true;
     }
-
-    public function rollback(): bool
-    {
-        $this->writeLog('Rolling back last migration batch...');
-
-        if(!$this->createMigrationRepository()) {
-            return false;
-        }
-
-        try {
-            $fetchStatus = $this->targetConnection->prepare("
-                SELECT *, CONCAT(:basepath, '/', `migration_name`, '.php') as `migration_path`
-                FROM `msz_migrations`
-                WHERE `migration_batch` = (
-                    SELECT MAX(`migration_batch`)
-                    FROM `msz_migrations`
-                )
-            ");
-            $fetchStatus->bindValue('basepath', $this->migrationStorage);
-            $migrations = $fetchStatus->execute() ? $fetchStatus->fetchAll() : [];
-        } catch(PDOException $ex) {
-            $this->addError($ex);
-            return false;
-        }
-
-        if(count($migrations) < 1) {
-            if(count($this->errors) > 0) {
-                return false;
-            }
-
-            $this->writeLog('Nothing to roll back!');
-            return true;
-        }
-
-        $migrationScripts = $this->getMigrationScripts();
-
-        if(count($migrationScripts) < count($migrations)) {
-            $this->addError(new Exception('There are missing migration scripts!'));
-            return false;
-        }
-
-        $removeRecord = $this->targetConnection->prepare('
-            DELETE FROM `msz_migrations`
-            WHERE `migration_id` = :id
-        ');
-
-        foreach($migrations as $migration) {
-            if(!file_exists($migration['migration_path'])) {
-                $this->addError(new Exception("Migration '{$migration['migration_name']}' does not exist."));
-                return false;
-            }
-
-            $nameSplit = explode('_', $migration['migration_name']);
-            $migrationName = '';
-
-            for($i = 4; $i < count($nameSplit); $i++) {
-                $migrationName .= ucfirst(mb_strtolower($nameSplit[$i]));
-            }
-
-            include_once $migration['migration_path'];
-
-            $this->writeLog("Rolling '{$migration['migration_name']}' back...");
-            $migrationFunction = sprintf(self::MIGRATION_NAMESPACE, $migrationName, 'migrate_down');
-            $migrationFunction($this->targetConnection);
-
-            $removeRecord->bindValue('id', $migration['migration_id']);
-            $removeRecord->execute();
-        }
-
-        $this->writeLog('Successfully completed all rollbacks');
-
-        return true;
-    }
 }