# Migration

 * [General](#general)
 * [From `v5.x.x` to `v6.x.x`](#from-v5xx-to-v6xx)
 * [From `v4.x.x` to `v5.x.x`](#from-v4xx-to-v5xx)
 * [From `v3.x.x` to `v4.x.x`](#from-v3xx-to-v4xx)
 * [From `v2.x.x` to `v3.x.x`](#from-v2xx-to-v3xx)
 * [From `v1.x.x` to `v2.x.x`](#from-v1xx-to-v2xx)

## General

Update your version of this library via Composer [[?]](https://github.com/delight-im/Knowledge/blob/master/Composer%20(PHP).md):

```
$ composer update delight-im/auth
```

## From `v5.x.x` to `v6.x.x`

 * The database schema has changed.

   * The MySQL database schema has changed. Use the statements below to update your database:

     ```sql
     ALTER TABLE users
         ADD COLUMN roles_mask INT(10) UNSIGNED NOT NULL DEFAULT 0 AFTER verified,
         ADD COLUMN resettable TINYINT(1) UNSIGNED NOT NULL DEFAULT 1 AFTER verified;

     ALTER TABLE users_confirmations
         ADD COLUMN user_id INT(10) UNSIGNED NULL DEFAULT NULL AFTER id;

     UPDATE users_confirmations SET user_id = (
         SELECT id FROM users WHERE email = users_confirmations.email
     ) WHERE user_id IS NULL;

     ALTER TABLE users_confirmations
         CHANGE COLUMN user_id user_id INT(10) UNSIGNED NOT NULL;

     ALTER TABLE users_confirmations
         ADD INDEX user_id (user_id ASC);

     DROP TABLE users_throttling;

     CREATE TABLE users_throttling (
         bucket varchar(44) CHARACTER SET latin1 COLLATE latin1_general_cs NOT NULL,
         tokens float unsigned NOT NULL,
         replenished_at int(10) unsigned NOT NULL,
         expires_at int(10) unsigned NOT NULL,
         PRIMARY KEY (bucket),
         KEY expires_at (expires_at)
     ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
     ```

   * The SQLite database schema has changed. Use the statements below to update your database:

     ```sql
     ALTER TABLE users
         ADD COLUMN "roles_mask" INTEGER NOT NULL CHECK ("roles_mask" >= 0) DEFAULT "0",
         ADD COLUMN "resettable" INTEGER NOT NULL CHECK ("resettable" >= 0) DEFAULT "1";

     ALTER TABLE users_confirmations
         ADD COLUMN "user_id" INTEGER CHECK ("user_id" >= 0);

     UPDATE users_confirmations SET user_id = (
         SELECT id FROM users WHERE email = users_confirmations.email
     ) WHERE user_id IS NULL;

     CREATE INDEX "users_confirmations.user_id" ON "users_confirmations" ("user_id");

     DROP TABLE users_throttling;

     CREATE TABLE "users_throttling" (
         "bucket" VARCHAR(44) PRIMARY KEY NOT NULL,
         "tokens" REAL NOT NULL CHECK ("tokens" >= 0),
         "replenished_at" INTEGER NOT NULL CHECK ("replenished_at" >= 0),
         "expires_at" INTEGER NOT NULL CHECK ("expires_at" >= 0)
     );

     CREATE INDEX "users_throttling.expires_at" ON "users_throttling" ("expires_at");
     ```

 * The method `setThrottlingOptions` has been removed.

 * The method `changePassword` may now throw an additional `\Delight\Auth\TooManyRequestsException` if too many attempts have been made without the correct old password.

 * The two methods `confirmEmail` and `confirmEmailAndSignIn` may now throw an additional `\Delight\Auth\UserAlreadyExistsException` if an attempt has been made to change the email address to an address that has become occupied in the meantime.

 * The two methods `forgotPassword` and `resetPassword` may now throw an additional `\Delight\Auth\ResetDisabledException` if the user has disabled password resets for their account.

 * The `Base64` class is now an external module and has been moved from the namespace `Delight\Auth` to the namespace `Delight\Base64`. The interface and the return values are not compatible with those from previous versions anymore.

## From `v4.x.x` to `v5.x.x`

 * The MySQL database schema has changed. Use the statement below to update your database:

   ```sql
   ALTER TABLE `users` ADD COLUMN `status` TINYINT(2) UNSIGNED NOT NULL DEFAULT 0 AFTER `username`;
   ```

 * The two classes `Auth` and `Base64` are now `final`, i.e. they can't be extended anymore, which has never been a good idea, anyway. If you still need to wrap your own methods around these classes, consider [object composition instead of class inheritance](https://en.wikipedia.org/wiki/Composition_over_inheritance).

## From `v3.x.x` to `v4.x.x`

 * PHP 5.6.0 or higher is now required.

## From `v2.x.x` to `v3.x.x`

 * The license has been changed from the [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0) to the [MIT License](https://opensource.org/licenses/MIT).

## From `v1.x.x` to `v2.x.x`

 * The MySQL schema has been changed from charset `utf8` to charset `utf8mb4` and from collation `utf8_general_ci` to collation `utf8mb4_unicode_ci`. Use the statements below to update the database schema:

   ```sql
   ALTER TABLE `users` CHANGE `email` `email` VARCHAR(249) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL;
   ALTER TABLE `users_confirmations` CHANGE `email` `email` VARCHAR(249) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL;

   -- ALTER DATABASE `<DATABASE_NAME>` CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;

   ALTER TABLE `users` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
   ALTER TABLE `users_confirmations` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
   ALTER TABLE `users_remembered` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
   ALTER TABLE `users_resets` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
   ALTER TABLE `users_throttling` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

   ALTER TABLE `users` CHANGE `email` `email` VARCHAR(249) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL;
   ALTER TABLE `users` CHANGE `username` `username` VARCHAR(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL;

   ALTER TABLE `users_confirmations` CHANGE `email` `email` VARCHAR(249) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL;

   ALTER TABLE `users_throttling` CHANGE `action_type` `action_type` ENUM('login','register','confirm_email') CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL;

   REPAIR TABLE users;
   OPTIMIZE TABLE users;
   REPAIR TABLE users_confirmations;
   OPTIMIZE TABLE users_confirmations;
   REPAIR TABLE users_remembered;
   OPTIMIZE TABLE users_remembered;
   REPAIR TABLE users_resets;
   OPTIMIZE TABLE users_resets;
   REPAIR TABLE users_throttling;
   OPTIMIZE TABLE users_throttling;
   ```