apps/web/scripts/perplexity/partners-updated-countries.ts (2)

46-65: Potential undefined access on empty array.

Line 52 accesses [0] on the filtered/sorted array without checking if it's empty. While the code handles this gracefully with optional chaining on lines 60-63, the pattern could be clearer.

Consider using a more explicit pattern:

-    const finalCountryChange = changeHistoryLog
-      .filter((ch) => ch.field === "country") // filter by country field
-      .sort((a, b) => b.changedAt.getTime() - a.changedAt.getTime())[0]; // sort by changedAt descending
+    const countryChanges = changeHistoryLog
+      .filter((ch) => ch.field === "country")
+      .sort((a, b) => b.changedAt.getTime() - a.changedAt.getTime());
+    const finalCountryChange = countryChanges.length > 0 ? countryChanges[0] : undefined;

---

69-69: Consider parameterizing the output filename.

The hardcoded "output.csv" filename could overwrite existing files. Consider making it configurable or adding a timestamp.

-  fs.writeFileSync("output.csv", Papa.unparse(finalPartners));
+  const outputFile = process.env.OUTPUT_FILE || `output-${programId}-${Date.now()}.csv`;
+  fs.writeFileSync(outputFile, Papa.unparse(finalPartners));
+  console.log(`Output written to ${outputFile}`);

apps/web/app/(ee)/api/cron/aggregate-clicks/route.ts (1)

31-34: Remove redundant default initialization.

The schema already defines default values, making this initialization redundant. The GET path will use schema defaults, and POST will override them from the body.

-    let { startingAfter, batchNumber } = schema.parse({
-      startingAfter: undefined,
-      batchNumber: 1,
-    });
+    let startingAfter: string | undefined;
+    let batchNumber = 1;

Then update line 45 to:

-      ({ startingAfter, batchNumber } = schema.parse(JSON.parse(rawBody)));
+      const parsed = schema.parse(JSON.parse(rawBody));
+      startingAfter = parsed.startingAfter;
+      batchNumber = parsed.batchNumber;

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

Learnt from: TWilson023
Repo: dubinc/dub PR: 2857
File: apps/web/lib/actions/partners/update-program.ts:96-0
Timestamp: 2025-09-17T17:44:03.965Z
Learning: In apps/web/lib/actions/partners/update-program.ts, the team prefers to keep the messagingEnabledAt update logic simple by allowing client-provided timestamps rather than implementing server-controlled timestamp logic to avoid added complexity.

Learnt from: devkiran
Repo: dubinc/dub PR: 2177
File: apps/web/lib/api/links/bulk-create-links.ts:66-84
Timestamp: 2025-06-06T07:59:03.120Z
Learning: In apps/web/lib/api/links/bulk-create-links.ts, the team accepts the risk of potential undefined results from links.find() operations when building invalidLinks arrays, because existing links are fetched from the database based on the input links, so matches are expected to always exist.

apps/web/app/(ee)/api/cron/aggregate-clicks/route.ts (1)

96-101: Fix off‑by‑one in total link count in endMessage

The total links in endMessage currently use:

batchNumber * BATCH_SIZE + linksWithClickRewards.length

For a final partial batch, this double‑counts a full batch. E.g., with BATCH_SIZE = 200, batchNumber = 4, and linksWithClickRewards.length = 150, it logs 950 instead of 750.

You want “completed full batches before this one” plus the current batch size, i.e.:

-    const endMessage = `Finished aggregating clicks for ${batchNumber} batches (total ${nFormatter(batchNumber * BATCH_SIZE + linksWithClickRewards.length, { full: true })} links)`;
+    const endMessage = `Finished aggregating clicks for ${batchNumber} batches (total ${nFormatter((batchNumber - 1) * BATCH_SIZE + linksWithClickRewards.length, { full: true })} links)`;

This also keeps the zero‑result follow‑up batch case consistent (the final empty batch just reports the total from the previous full batches).

Also applies to: 171-189

apps/web/app/(ee)/api/cron/aggregate-clicks/route.ts (4)

102-113: Commission calculation pipeline is consistent; consider tightening the filter typing

The flow from analytics → linkClicksMap → commissionsToCreate is coherent: zero/non‑paid links are dropped, and only links with complete programId / partnerId / clickReward data produce commissions, with earnings derived via getRewardAmount(serializeReward(...)) * linkClicks. That all looks correct.

If TypeScript ever complains about null in commissionsToCreate, you can make the filter a proper type guard instead of relying on satisfies for narrowing:

-      .filter((c) => c !== null) satisfies Prisma.CommissionCreateManyInput[];
+      .filter(
+        (c): c is Prisma.CommissionCreateManyInput => c !== null,
+      );

This gives commissionsToCreate the precise Prisma.CommissionCreateManyInput[] type without needing satisfies, which also makes the subsequent for ... of destructuring safer in strict mode.

Also applies to: 119-152

---

153-169: Avoid repeated syncTotalCommissions calls for the same partner/program pair

Right now, syncTotalCommissions is called once per commission in commissionsToCreate. If multiple links in the same partner/program pair generate commissions in the same batch, this will call the sync multiple times for the same pair, which is unnecessary extra work on a cron path.

You could deduplicate by partner/program before syncing, for example:

-    for (const { partnerId, programId } of commissionsToCreate) {
-      // Sync total commissions for each partner that we created commissions for
-      await syncTotalCommissions({
-        partnerId,
-        programId,
-      });
-    }
+    const uniquePairs = new Map<string, { partnerId: string; programId: string }>();
+
+    for (const { partnerId, programId } of commissionsToCreate) {
+      const key = `${partnerId}:${programId}`;
+      if (!uniquePairs.has(key)) {
+        uniquePairs.set(key, { partnerId, programId });
+      }
+    }
+
+    for (const { partnerId, programId } of uniquePairs.values()) {
+      await syncTotalCommissions({ partnerId, programId });
+    }

This keeps behavior the same while bounding the number of sync calls per batch by the number of distinct partner/program combinations instead of number of links.

---

153-159: Consider dropping or gating console.table in cron

console.table(commissionsToCreate); on a cron that can process many links per day may produce noisy logs (and include partner/program/link identifiers). If this was for debugging, consider removing it or guarding behind a debug flag or environment check so production logs stay leaner.

---

171-187: QStash chaining looks correct; minor log message polish

The logic to detect a full batch, enqueue the next job via QStash with startingAfter and batchNumber + 1, and immediately return a log/response is sound and should give you robust chaining across large datasets.

Tiny nit: the log string has slightly unbalanced parentheses and could be clearer:

-      return logAndRespond(
-        `Enqueued next batch (batch #${batchNumber + 1} for aggregate clicks cron (startingAfter: ${nextStartingAfter}).`,
-      );
+      return logAndRespond(
+        `Enqueued next batch (batch #${batchNumber + 1}) for aggregate clicks cron (startingAfter: ${nextStartingAfter}).`,
+      );

Purely cosmetic, feel free to ignore if you like the current wording.

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

Learnt from: devkiran
Repo: dubinc/dub PR: 2177
File: apps/web/lib/api/links/bulk-create-links.ts:66-84
Timestamp: 2025-06-06T07:59:03.120Z
Learning: In apps/web/lib/api/links/bulk-create-links.ts, the team accepts the risk of potential undefined results from links.find() operations when building invalidLinks arrays, because existing links are fetched from the database based on the input links, so matches are expected to always exist.