Automatically cancel servers with failed payments older than 30d (#3695)

apps/labrinth/.sqlx/query-d4d17b6a06c2f607206373b18a1f4c367f03f076e5e264ec8f5e744877c6d362.json

@@ -0,0 +1,106 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n            SELECT\n                id, user_id, price_id, amount, currency_code, status, due, last_attempt,\n                charge_type, subscription_id,\n                -- Workaround for https://github.com/launchbadge/sqlx/issues/3336\n                subscription_interval AS \"subscription_interval?\",\n                payment_platform,\n                payment_platform_id AS \"payment_platform_id?\",\n                parent_charge_id AS \"parent_charge_id?\",\n                net AS \"net?\"\n            FROM charges\n            \n            WHERE\n                charge_type = $1 AND\n                status = 'failed' AND due < NOW() - INTERVAL '30 days'\n            ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 1,
+        "name": "user_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 2,
+        "name": "price_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 3,
+        "name": "amount",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 4,
+        "name": "currency_code",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 5,
+        "name": "status",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 6,
+        "name": "due",
+        "type_info": "Timestamptz"
+      },
+      {
+        "ordinal": 7,
+        "name": "last_attempt",
+        "type_info": "Timestamptz"
+      },
+      {
+        "ordinal": 8,
+        "name": "charge_type",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 9,
+        "name": "subscription_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 10,
+        "name": "subscription_interval?",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 11,
+        "name": "payment_platform",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 12,
+        "name": "payment_platform_id?",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 13,
+        "name": "parent_charge_id?",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 14,
+        "name": "net?",
+        "type_info": "Int8"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Text"
+      ]
+    },
+    "nullable": [
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      true,
+      false,
+      true,
+      true,
+      false,
+      true,
+      true,
+      true
+    ]
+  },
+  "hash": "d4d17b6a06c2f607206373b18a1f4c367f03f076e5e264ec8f5e744877c6d362"
+}

apps/labrinth/src/database/models/charge_item.rs

@@ -254,6 +254,27 @@ impl DBCharge {
             .collect::<Result<Vec<_>, serde_json::Error>>()?)
     }
 
+    pub async fn get_cancellable(
+        exec: impl sqlx::Executor<'_, Database = sqlx::Postgres>,
+    ) -> Result<Vec<DBCharge>, DatabaseError> {
+        let charge_type = ChargeType::Subscription.as_str();
+        let res = select_charges_with_predicate!(
+            r#"
+            WHERE
+                charge_type = $1 AND
+                status = 'failed' AND due < NOW() - INTERVAL '30 days'
+            "#,
+            charge_type
+        )
+        .fetch_all(exec)
+        .await?;
+
+        Ok(res
+            .into_iter()
+            .map(|r| r.try_into())
+            .collect::<Result<Vec<_>, serde_json::Error>>()?)
+    }
+
     pub async fn remove(
         id: DBChargeId,
         transaction: &mut sqlx::Transaction<'_, sqlx::Postgres>,

apps/labrinth/src/routes/internal/billing.rs

@@ -2284,12 +2284,19 @@ pub async fn index_billing(
 ) {
     info!("Indexing billing queue");
     let res = async {
+        // If a charge has continuously failed for more than a month, it should be cancelled
+        let charges_to_cancel = DBCharge::get_cancellable(&pool).await?;
+
+        for mut charge in charges_to_cancel {
+            charge.status = ChargeStatus::Cancelled;
+
+            let mut transaction = pool.begin().await?;
+            charge.upsert(&mut transaction).await?;
+            transaction.commit().await?;
+        }
+
         // If a charge is open and due or has been attempted more than two days ago, it should be processed
-        let charges_to_do =
-            crate::database::models::charge_item::DBCharge::get_chargeable(
-                &pool,
-            )
-            .await?;
+        let charges_to_do = DBCharge::get_chargeable(&pool).await?;
 
         let prices = product_item::DBProductPrice::get_many(
             &charges_to_do