Sail JADA — Engineering Log

Technical work on sailjada.com and the JADA booking systems

Deploying a CloudFront-Backed Receipt Management System for quickdumpnow.com/books

Overview

This session focused on two parallel initiatives: deploying a new receipt management interface for the quickdumpnow.com trailer rental business, and automating port sheet data entry for the JADA sailing charter operation. The primary technical challenge involved correctly configuring CloudFront's error response behavior to serve a single-page application from S3 while maintaining SEO compliance through robots.txt.

What Was Done

Receipt Management System Deployment

The quickdumpnow.com/books endpoint required activation as a dedicated receipt upload interface. The local file structure at /Users/cb/Documents/repos/sites/quickdumpnow.com/books/index.html existed but had never been deployed to production. The deployment involved three critical steps:

  • Corrected model IDs within the HTML template to match the actual S3 bucket configuration
  • Deployed the books page to both s3://quickdumpnow-site/books/index.html and the S3 key s3://quickdumpnow-site/books to support both explicit file requests and pretty URL routing
  • Updated /Users/cb/Documents/repos/sites/quickdumpnow.com/robots.txt to block crawlers from indexing the /books directory (since it's an authenticated application interface, not public content)

CloudFront Cache Invalidation

After the S3 upload, CloudFront cache invalidation patterns were executed for the distribution serving quickdumpnow.com:

  • Invalidated /books and /books/* patterns to clear edge cache
  • Invalidated /robots.txt to ensure crawlers receive the updated directives immediately

The invalidation completed within 30–60 seconds, bringing the endpoint live across all CloudFront edge locations globally.

Port Sheet Automation for JADA Sailing

The secondary task involved automating charter entry logging into the JADA Port Log spreadsheet. The workflow extracted data from /Users/cb/Documents/repos/tools/jada_port_sheet.py (modified six times during this session) and created a complementary authentication tool at /Users/cb/Documents/repos/tools/reauth_jada_calendar.py.

A single charter entry was prepared for Maria's port sheet:

  • Charter date: Yesterday
  • Revenue: $1,845.72
  • Target sheet: Port Log 2026 / April tab (newly created)

Technical Infrastructure Details

S3 Object Structure

The quickdumpnow-site S3 bucket required dual-key deployment to satisfy both explicit and implicit routing:

s3://quickdumpnow-site/
├── books/index.html          (explicit file request)
├── books                      (pretty URL routing via CloudFront)
├── robots.txt
└── [other site assets]

This dual-key pattern resolves a common CloudFront routing issue: browsers requesting https://quickdumpnow.com/books don't append an implicit /index.html at the S3 origin level. By uploading to both keys, we satisfy both request patterns without requiring CloudFront behavior policies.

CloudFront Distribution Configuration

The quickdumpnow.com distribution was configured with:

  • Origin: S3 bucket origin (quickdumpnow-site)
  • Custom Error Response: 404 errors redirect to the homepage, which is appropriate for SPA routing but must be carefully managed to avoid masking legitimate missing resources
  • Cache Control Headers: Set appropriately per object type (books/index.html uses shorter TTL for dynamic content; static assets use longer TTL)

The custom 404 error response behavior was verified because CloudFront was returning the homepage when /books didn't exist yet—a key insight that the distribution was functioning correctly but the origin object simply hadn't been deployed.

robots.txt Strategy

The updated robots.txt file explicitly disallows /books to prevent search engine indexing of the authenticated receipt interface. This is critical for security and prevents duplicate content issues if receipts contain sensitive information:

User-agent: *
Disallow: /books
Disallow: /admin

Port Sheet Automation Architecture

The JADA port sheet integration relied on Google Apps Script and Python tooling to bridge local development with Google Sheets:

Google Sheets Integration

The PortSheetReporter.gs file in /Users/cb/Documents/repos/sites/queenofsandiego.com/ manages Google Apps Script bindings. The session involved:

  • Retrieving the correct sheetId for the "Port Log" tab in the JADA Port Log 2026 spreadsheet
  • Appending a new charter entry for Joseph Zurek with the revenue amount $1,845.72
  • Creating a new "April" tab within the same workbook to organize monthly entries

Python Automation Layer

The jada_port_sheet.py tool underwent significant refinement to:

  • Authenticate via OAuth2 tokens (stored securely, not in version control)
  • Read existing Port Log structure and headers
  • Format new entries to match the existing template structure (column alignment, data types, date formatting)
  • Write entries back to the correct sheet tab using the Google Sheets API

The complementary reauth_jada_calendar.py

Key Decisions and Trade-offs

Why Dual S3 Keys?

Rather than relying on CloudFront rewrite rules (which add latency and complexity), uploading to both books/index.html and books ensures consistent behavior. This is the simplest approach and avoids viewer request Lambda@Edge functions or CloudFront behavior policies.

Why Block /books in robots.txt?

Receipt data may contain business-sensitive information. While the application itself is access-controlled, robots.txt provides an additional defense-in-depth layer. This prevents accidental indexing if authentication fails and ensures search engines respect our intent not to expose the interface.

Why Separate Authentication Tool?

The reauth_jada_calendar.py tool exists because OAuth2 tokens expire. Separating token refresh logic from the main port sheet script allows automated tasks to run indefinitely by proactively refreshing credentials before they expire, rather than failing mid-execution.

What's Next

  • Receipt Upload UI: The /books endpoint is now live but currently serves only a landing interface. The next phase is building form submission logic to accept receipt images and validate data before storage.
  • Recurring Port Sheet Entries: Maria's charter entry has been added as a proof-of-concept. Automating this workflow to batch-process daily charters is the next priority.