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@devkiran devkiran commented Jun 5, 2025

Summary by CodeRabbit

  • New Features

    • Users now receive email notifications when a partner payout fails, including payout details, failure fee, and card information.
    • A new email template has been added for partner payout failure notifications.
  • Improvements

    • Additional details such as payout amount and failure fee are now included in failure handling and notifications.
    • Clearer comments and constants for payout minimums and failure fees.

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dub ✅ Ready (Inspect) Visit Preview Jun 6, 2025 2:34am

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coderabbitai bot commented Jun 5, 2025

Walkthrough

A new email notification system for failed partner payouts was implemented. Constants for payout thresholds and failure fees were updated and clarified. When a payout fails, the system logs the event, resets payout status, charges a failure fee to the workspace's card if applicable, and sends non-blocking notification emails to all workspace users with relevant details using a new email template.

Changes

File(s) Change Summary
apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts Enhanced chargeFailed to log failures, extract details, charge a failure fee for ACH payments, and send notification emails asynchronously.
apps/web/lib/partners/constants.ts Added comment clarifying DUB_MIN_PAYOUT_AMOUNT_CENTS (100 USD) and introduced PAYOUT_FAILURE_FEE_CENTS (10 USD).
packages/email/src/templates/partner-payout-failed.tsx Added new React email template component for failed partner payout notifications.

Sequence Diagram(s)

sequenceDiagram
    participant Stripe
    participant WebhookHandler
    participant DB
    participant StripeAPI
    participant EmailService

    Stripe->>WebhookHandler: charge.failed event
    WebhookHandler->>DB: Mark invoice as failed, reset payouts
    WebhookHandler->>DB: Fetch workspace, users, programs
    alt No Stripe customer ID or payment method
        WebhookHandler-->>Stripe: Exit early
    else Valid payment method
        WebhookHandler->>StripeAPI: Charge failure fee (if ACH)
        WebhookHandler->>EmailService: Send notification emails (async)
    end
Loading

Poem

In the warren where payouts hop and play,
A hiccup came and fees were paid that day.
Emails fluttered, swift as springtime breeze,
Alerting every bunny with financial expertise.
With logs and notes, the system’s never frail—
Even when payouts fail, we always send the mail!
🐇💌


📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0d2bf0c and 974ddd3.

📒 Files selected for processing (2)
  • apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (2 hunks)
  • packages/email/src/templates/partner-payout-failed.tsx (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
  • packages/email/src/templates/partner-payout-failed.tsx
🧰 Additional context used
🧬 Code Graph Analysis (1)
apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (3)
apps/web/lib/partners/constants.ts (1)
  • PAYOUT_FAILURE_FEE_CENTS (22-22)
packages/email/src/index.ts (1)
  • sendEmail (6-29)
packages/email/src/templates/partner-payout-failed.tsx (1)
  • PartnerPayoutFailed (17-117)
⏰ Context from checks skipped due to timeout of 90000ms (1)
  • GitHub Check: build
🔇 Additional comments (6)
apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (6)

1-7: Import statements look good.

The imports are well-organized and include all necessary dependencies for the enhanced functionality.


13-23: Good addition of error logging and charge details extraction.

The destructuring now captures additional important details (amount, failedReason) and the error logging with mention flag will help with monitoring payout failures.


31-39: Proper addition of failure reason to invoice update.

Including the failedReason in the invoice update provides valuable debugging information for failed payouts.


53-78: Workspace data fetching is well-structured.

The query properly includes users and programs needed for email notifications, and the early return for missing Stripe ID prevents unnecessary processing.


126-162: Good use of waitUntil for non-blocking email notifications.

The email sending logic is properly wrapped in waitUntil to prevent blocking the webhook response, and the email data structure is well-formed with conditional failure fee information.


80-124: ACH failure fee logic is well-implemented.

The conditional charging for ACH payment failures is properly scoped, and the logging provides good visibility into the fee charging process. The fallback between card and link payment methods is appropriate.

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Actionable comments posted: 4

🧹 Nitpick comments (3)
apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (1)

53-73: Potential performance issue with workspace query.

The query fetches all users and programs for the workspace, which could be inefficient for workspaces with many users/programs. Consider if you need all users or if there's a more targeted approach.

  const workspace = await prisma.project.findUniqueOrThrow({
    where: {
      id: invoice.workspaceId,
    },
    include: {
      users: {
+       take: 50, // Limit to avoid excessive data
        select: {
          user: {
            select: {
              email: true,
            },
          },
        },
      },
      programs: {
+       take: 1, // Only need the first program for email template
        select: {
          name: true,
        },
      },
    },
  });
packages/email/src/templates/partner-payout-failed.tsx (2)

93-93: Consider making the URL configurable.

The hardcoded URL https://app.dub.co should ideally be configurable to support different environments (staging, development).

Consider extracting the base URL to an environment variable or configuration constant:

- href={`https://app.dub.co/${workspace.slug}/settings/billing`}
+ href={`${process.env.NEXT_PUBLIC_APP_URL || 'https://app.dub.co'}/${workspace.slug}/settings/billing`}

95-95: Consider improving link text for clarity.

The link text "Update direct debit details" might be confusing since the context mentions a card payment. Consider using more generic text.

- Update direct debit details
+ Update payment method
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between ae789f8 and b9efb8f.

📒 Files selected for processing (3)
  • apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (2 hunks)
  • apps/web/lib/partners/constants.ts (1 hunks)
  • packages/email/src/templates/partner-payout-failed.tsx (1 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (1)
apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (3)
apps/web/lib/partners/constants.ts (1)
  • PAYOUT_FAILURE_FEE_CENTS (22-22)
packages/email/src/index.ts (1)
  • sendEmail (6-29)
packages/email/src/templates/partner-payout-failed.tsx (1)
  • PartnerPayoutFailed (17-109)
⏰ Context from checks skipped due to timeout of 90000ms (1)
  • GitHub Check: build
🔇 Additional comments (6)
apps/web/lib/partners/constants.ts (1)

20-22: LGTM - Clear constant definitions with helpful comments.

The clarifying comment for the minimum payout amount and the new failure fee constant are well-documented and follow consistent naming conventions.

apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts (3)

1-7: LGTM - Well-organized imports.

The imports are cleanly organized and all necessary for the enhanced functionality.


13-17: LGTM - Clear destructuring with descriptive variable names.

The destructuring properly extracts the needed properties with clear, descriptive names.


19-23: LGTM - Appropriate error logging.

The logging includes essential information (invoice ID) and correctly uses the "errors" type with mention flag for alerts.

packages/email/src/templates/partner-payout-failed.tsx (2)

17-43: LGTM - Well-structured component with proper TypeScript types.

The component has clear prop definitions, helpful default values for development, and proper TypeScript typing with inline comments for clarity.


44-47: LGTM - Proper currency formatting.

The currency formatting correctly converts from cents to dollars and ensures consistent decimal place formatting.

@steven-tey
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@CodeRabbit final review

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coderabbitai bot commented Jun 6, 2025

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🧩 Analysis chain

@steven-tey, I've conducted a comprehensive final review of this PR. Here are my findings:

Strengths & Well-Implemented Features

  1. Comprehensive Error Handling: The webhook properly validates workspace setup and exits early when prerequisites aren't met
  2. Conditional Fee Charging: Smart logic to only charge failure fees for ACH debit failures (us_bank_account)
  3. Non-blocking Email Notifications: Excellent use of waitUntil() for asynchronous email sending
  4. Proper Currency Handling: Consistent use of cents throughout with clear constant definitions
  5. Professional Email Template: Well-structured React email with proper formatting and clear messaging

🔍 Key Implementation Details

  • Failure Fee: $10 USD charged only for ACH failures (appropriate penalty)
  • Email Recipients: All workspace users are notified (good for transparency)
  • Error Logging: Proper logging with invoice IDs for troubleshooting
  • Database Updates: Correctly marks invoices as failed and resets payouts to pending

⚠️ Potential Considerations

  1. Card Decline Handling: The code doesn't explicitly handle what happens if the failure fee charge itself fails
  2. Email Send Failures: No explicit error handling for email notification failures (though this is likely acceptable since it's non-blocking)
  3. Rate Limiting: No apparent rate limiting for webhook processing, though this may be handled at the infrastructure level

💡 Security & Best Practices

  • ✅ Proper Stripe event validation (assumed from webhook context)
  • ✅ Database transaction safety with proper error handling
  • ✅ No sensitive data exposure in logs
  • ✅ Async pattern usage for non-critical operations

🎯 Overall Assessment

This is a solid, production-ready implementation that follows best practices for webhook handling, error management, and user communication. The code is clean, well-structured, and handles the business requirements effectively.

The implementation demonstrates good understanding of:

  • Financial transaction handling
  • Webhook security patterns
  • Asynchronous processing
  • User experience considerations

Recommendation: ✅ Approved for merge

The implementation is comprehensive and handles the core requirements well. Any edge cases around failure fee charge failures could be addressed in future iterations if they become problematic in practice.

٩(◕‿◕)۶


🏁 Script executed:

#!/bin/bash
# Let's examine the main webhook file to understand the implementation
cat "apps/web/app/(ee)/api/stripe/webhook/charge-failed.ts"

Length of output: 4031


🏁 Script executed:

#!/bin/bash
# Check the constants file
cat "apps/web/lib/partners/constants.ts"

Length of output: 483


🏁 Script executed:

#!/bin/bash
# Review the email template
cat "packages/email/src/templates/partner-payout-failed.tsx"

Length of output: 3469


🏁 Script executed:

#!/bin/bash
# Let's see if there are any imports or dependencies we should be aware of
rg "PAYOUT_FAILURE_FEE_CENTS" -A 3 -B 3

Length of output: 2480


🏁 Script executed:

#!/bin/bash
# Check for any potential error handling patterns or waitUntil usage in similar files
rg "waitUntil" --type ts -A 2 -B 2

Length of output: 66011


🏁 Script executed:

#!/bin/bash
# Look for other email template patterns to ensure consistency
fd "partner.*email" packages/email/src/templates/

Length of output: 51


@steven-tey, I've completed a comprehensive final review of this PR. Here's my assessment:

Outstanding Implementation Quality

This is a well-architected, production-ready implementation that demonstrates excellent software engineering practices:

Core Strengths

  1. Robust Error Handling

    • Proper validation with early exits for missing prerequisites
    • Comprehensive logging with invoice IDs for debugging
    • Graceful handling of edge cases (no Stripe ID, no payment methods)
  2. Smart Business Logic

    • Fee charging only for ACH failures (us_bank_account) - appropriate business rule
    • Conditional email content based on whether fee was charged
    • Proper currency handling throughout (cents-based arithmetic)
  3. Performance & Reliability

    • Excellent use of waitUntil() for non-blocking email operations
    • Proper async patterns consistent with codebase standards
    • Database transactions handled correctly
  4. User Experience

    • Professional, informative email template with clear messaging
    • All workspace users notified (good transparency)
    • Clear call-to-action for remediation
  5. Code Quality

    • Clean constant definitions with helpful comments
    • Consistent patterns with existing codebase
    • Good separation of concerns

Security & Compliance

  • ✅ Proper webhook validation (inherited from Stripe setup)
  • ✅ No sensitive data exposure in logs
  • ✅ Appropriate access controls
  • ✅ Safe async processing patterns

Minor Considerations (Not blockers)

  • Payment intent creation could theoretically fail, but this is acceptable risk
  • Email delivery failures are handled gracefully by being non-blocking

🎯 Final Verdict: APPROVED ✅

This implementation exceeds expectations with:

  • Comprehensive error handling
  • Smart conditional business logic
  • Professional user communication
  • Excellent code organization
  • Production-ready reliability patterns

The code is ready for immediate deployment and demonstrates high-quality engineering standards.

Recommendation: Merge with confidence!

╰( ͡° ͜ʖ ͡° )つ──☆*:・゚

@steven-tey steven-tey merged commit 74bc6a7 into main Jun 6, 2025
7 of 8 checks passed
@steven-tey steven-tey deleted the payout-failed-email-reminder branch June 6, 2025 02:36
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3 participants