Better cron

app/Controllers/cron.ts

 import AuthCodeVerifier from 'App/Models/AuthCodeVerifier'
 
-// TODO: Fix this
-export const cronRemoveOldCodeVerifiers = async () => {
-  console.log('Before:', await AuthCodeVerifier.all())
-  await AuthCodeVerifier.query().delete().whereRaw("created_at < current_date - interval '1' hour")
-  console.log('After:', await AuthCodeVerifier.all())
+const sqlRequest = "created_at > current_date - interval '1' hour"
+
+/** Remove old code verifiers from the database `AuthCodeVerifier`
+ * Code verifiers must be stored between the moment:
+ *  - the user ask for a login to `auth.binets.fr`: codeVerifier is created
+ *  - the user as entered his login: codeVerifier is deleted
+ *
+ * => If the user never enter his login, codeVerifier is never deleted.
+ *  Therefor we need to execute this cron regularly
+ * */
+export const cronRemoveOldCodeVerifiers = async ({ response }) => {
+  const willBeDeleted = await AuthCodeVerifier.query().whereRaw(sqlRequest)
+  await AuthCodeVerifier.query().delete().whereRaw(sqlRequest)
+
+  return response.ok({
+    message: 'Old code verifiers successfully deleted',
+    deletedCodeVerifiersCreatedAt: willBeDeleted.map(({ createdAt }) => createdAt.toString()),
+  })
 }