Implement sync service queue

apps/api/src/database/seed.ts

@@ -3,7 +3,7 @@ import { db } from "./db";
 import { log } from "../util";
 
 // =====================
-// SYNC RUNS
+// PRODUCT SYNCS
 // =====================
 {
     log.info({ name: "product_syncs" }, "Creating table");
@@ -11,8 +11,11 @@ import { log } from "../util";
     await db.schema.createTable("product_syncs")
         .$call(addDefaultColumns)
         .addColumn("printful_product_id_filter", sql`integer[]`)
-        .addColumn("syncing_printful_product_ids", sql`integer[]`, (cb) => cb.notNull())
-        .addColumn("started_at", "timestamptz", (cb) => cb.unique())
+        .addColumn("syncing_printful_product_ids", sql`integer[]`, (cb) => cb
+            .notNull()
+            .defaultTo(sql`'{}'::integer[]`)
+        )
+        .addColumn("started_at", "timestamptz")
         .addColumn("ended_at", "timestamptz")
         .addColumn("has_failed", "boolean", (cb) => cb.notNull().defaultTo(false))
         .execute()