Add invoice dueDate: DB, API, UI, PDF; default +30d; overdue flag

[grmbyrn]

Summary by CodeRabbit

• New Features
  • Added due date support for invoices with a default 30-day period
  • Invoice status now displays "Overdue" when past due and unpaid
  • Due date field added to invoice creation form
  • Due date rendering included in generated invoice PDFs

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Project	Deployment	Actions	Updated (UTC)
worklog	Ready	Preview, Comment	Apr 1, 2026 7:35pm

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 27f07e3b-1ac8-4a70-8e24-4a0bf4c8a6d6

📥 Commits

Reviewing files that changed from the base of the PR and between 6ed96e2 and ca9e6e0.

📒 Files selected for processing (7)

• .github/workflows/ci.yml
• __tests__/InvoicesPage.test.tsx
• app/api/invoices/[id]/route.ts
• app/api/invoices/route.ts
• app/invoices/page.tsx
• prisma/migrations/20260401192103_add_invoice_due_date/migration.sql
• prisma/schema.prisma

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📝 Walkthrough

Walkthrough

This PR introduces an invoice due-date feature to the system. A new dueDate column is added to the Invoice database schema via migration. API endpoints now compute and return an isOverdue flag. The frontend adds a due-date input field (defaulting to 30 days ahead), renders the due date in PDFs, and displays overdue status in the invoice table.

Changes

Cohort / File(s)	Summary
CI Workflow .github/workflows/ci.yml	Removed extra whitespace in branches arrays and trailing blank line; no logic changes.
Database Schema prisma/schema.prisma, prisma/migrations/20260401192103_add_invoice_due_date/migration.sql	Added optional dueDate DateTime? field to Invoice model and created corresponding SQL migration.
API Handlers app/api/invoices/route.ts, app/api/invoices/[id]/route.ts	Enhanced GET handlers to compute and return isOverdue flag; POST handler now accepts and defaults dueDate to 30 days from creation; PATCH handler formatting adjusted.
Frontend app/invoices/page.tsx	Added DEFAULT_DUE_DATE constant; extended Invoice interface with dueDate and isOverdue fields; added due-date input to creation form; updated PDF generation to render due date; modified status logic to prioritize overdue over paid state.
Tests __tests__/InvoicesPage.test.tsx	Refactored mock fetch handlers and conditional logic formatting; adjusted date input selector formatting without changing test behavior.

Sequence Diagram

sequenceDiagram
    participant Client as Client (Browser)
    participant Server as API Server
    participant DB as Database

    Client->>Server: POST /api/invoices (with optional dueDate)
    Note over Server: Compute dueDate default (now + 30 days) if not provided
    Server->>DB: Create invoice with dueDate
    DB-->>Server: Invoice created
    Server-->>Client: Return created invoice

    Client->>Server: GET /api/invoices
    Note over Server: Fetch all invoices from DB
    Server->>DB: Query invoices
    DB-->>Server: Invoices retrieved
    Note over Server: Compute isOverdue for each<br/>(dueDate exists && !paid && dueDate < now)
    Server-->>Client: Return invoices with isOverdue

    Client->>Client: Render invoice table<br/>Show "Overdue" if isOverdue,<br/>else "Paid"/"Unpaid"
    Client->>Client: Render PDF with Due date

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Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related issues

• Add due date field to invoices #49: This PR directly implements the requested dueDate field addition with schema migration, 30-day default behavior, PDF rendering, and overdue computation.

Possibly related PRs

• store hourly rate per client #56: Both PRs modify the same invoice API handlers and frontend page to extend invoice objects with additional optional fields.
• Feature/invoice paid status #18: Both PRs involve invoice payment/status handling, with retrieved PR introducing PATCH/isPaid logic while this PR adds overdue status prioritization.

Poem

🐰 A hop through the dates, a due one appears,

Thirty days hence by default, crystal clear!

Overdue flags now wave with pride,

In PDFs and tables, no dates can hide! 📅

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch wl-49

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