Fix SAML duplicate accounts when signing in the first time on an existing account

backend/src/db/migrations/20250808174003_add-user-alias-is-email-verified.ts

@@ -0,0 +1,37 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+
+const BATCH_SIZE = 1000;
+
+export async function up(knex: Knex): Promise<void> {
+  if (!(await knex.schema.hasColumn(TableName.UserAliases, "isEmailVerified"))) {
+    // Add the column
+    await knex.schema.alterTable(TableName.UserAliases, (t) => {
+      t.boolean("isEmailVerified").defaultTo(false);
+    });
+
+    const aliasesToUpdate: { aliasId: string; isEmailVerified: boolean }[] = await knex(TableName.UserAliases)
+      .join(TableName.Users, `${TableName.UserAliases}.userId`, `${TableName.Users}.id`)
+      .select([`${TableName.UserAliases}.id as aliasId`, `${TableName.Users}.isEmailVerified`]);
+
+    for (let i = 0; i < aliasesToUpdate.length; i += BATCH_SIZE) {
+      const batch = aliasesToUpdate.slice(i, i + BATCH_SIZE);
+
+      const trueIds = batch.filter((row) => row.isEmailVerified).map((row) => row.aliasId);
+
+      if (trueIds.length > 0) {
+        // eslint-disable-next-line no-await-in-loop
+        await knex(TableName.UserAliases).whereIn("id", trueIds).update({ isEmailVerified: true });
+      }
+    }
+  }
+}
+
+export async function down(knex: Knex): Promise<void> {
+  if (await knex.schema.hasColumn(TableName.UserAliases, "isEmailVerified")) {
+    await knex.schema.alterTable(TableName.UserAliases, (t) => {
+      t.dropColumn("isEmailVerified");
+    });
+  }
+}

backend/src/db/schemas/user-aliases.ts

@@ -16,7 +16,8 @@ export const UserAliasesSchema = z.object({
   emails: z.string().array().nullable().optional(),
   orgId: z.string().uuid().nullable().optional(),
   createdAt: z.date(),
-  updatedAt: z.date()
+  updatedAt: z.date(),
+  isEmailVerified: z.boolean().default(false).nullable().optional()
 });
 
 export type TUserAliases = z.infer<typeof UserAliasesSchema>;