Add Upgrader hook changes for civicrm_stripe_customers table changes.

CRM/Stripe/Upgrader.php

@@ -8,22 +8,46 @@ class CRM_Stripe_Upgrader extends CRM_Stripe_Upgrader_Base {
   // By convention, functions that look like "function upgrade_NNNN()" are
   // upgrade tasks. They are executed in order (like Drupal's hook_update_N).
 
+  /**
+   * Standard: run an install sql script
+   */
+  public function install() {
+  }
+
+  /**
+   * Standard: run an uninstall script
+   */
+  public function uninstall() {
+  }
+
   /**
    * Add is_live column to civicrm_stripe_plans and civicrm_stripe_customers tables.
    *
    * @return TRUE on success
    * @throws Exception
    */
-  public function upgrade_4200() {
+  public function upgrade_1_9_003() {
+    // Add is_live column to civicrm_stripe_plans and civicrm_stripe_customers tables.
     $live_column_check = mysql_query("SHOW COLUMNS FROM `civicrm_stripe_customers` LIKE 'is_live'");
     $live_column_exists = (mysql_num_rows($live_column_check)) ? TRUE : FALSE;
     if (!$live_column_exists) {
-      $this->ctx->log->info('Applying civicrm_stripe update 4200.  Adding is_live to civicrm_stripe_plans and civicrm_stripe_customers tables.');
+      $this->ctx->log->info('Applying civicrm_stripe update 1903.  Adding is_live to civicrm_stripe_plans and civicrm_stripe_customers tables.');
       CRM_Core_DAO::executeQuery('ALTER TABLE civicrm_stripe_customers ADD COLUMN `is_live` tinyint(4) NOT NULL COMMENT "Whether this is a live or test transaction"');
       CRM_Core_DAO::executeQuery('ALTER TABLE civicrm_stripe_plans ADD COLUMN `is_live` tinyint(4) NOT NULL COMMENT "Whether this is a live or test transaction"');
     }
     else {
-      $this->ctx->log->info('Skipped civicrm_stripe update 4200.  Column is_live already present on civicrm_stripe_plans table.');
+      $this->ctx->log->info('Skipped civicrm_stripe update 1903.  Column is_live already present on civicrm_stripe_plans table.');
+    }
+
+    $key_column_check = mysql_query("SHOW INDEX FROM `civicrm_stripe_customers` WHERE Key_name = 'email'");
+    $key_column_exists = (mysql_num_rows($key_column_check)) ? TRUE : FALSE;
+    if ($key_column_exists) {
+      $this->ctx->log->info('Applying civicrm_stripe update 1903.  Setting unique key from email to id on civicrm_stripe_plans table.');
+      CRM_Core_DAO::executeQuery('ALTER TABLE `civicrm_stripe_customers` DROP INDEX email');
+      CRM_Core_DAO::executeQuery('ALTER TABLE `civicrm_stripe_customers` ADD UNIQUE (id)');
+    }
+    else {
+      $this->ctx->log->info('Skipped civicrm_stripe update 1903.  Unique key already changed from email to id on civicrm_stripe_plans table.');
     }
     return TRUE;
   }