528 lines
19 KiB
Markdown
528 lines
19 KiB
Markdown
# 🔗 AI Handoff — Projects & Agent Workspace
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**Live at:** [https://app.ai-handoff.work](https://app.ai-handoff.work)
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**Repo:** [https://github.com/stateofshit/url-shortener](https://github.com/stateofshit/url-shortener)
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**Built:** August 12, 2026
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* * *
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## What This Covers
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### 1. URL Shortener (Production App)
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A **production-ready URL shortener** with **live click analytics**, deployed entirely on **Cloudflare's edge infrastructure**. No accounts, no databases to manage, no servers to maintain. Just paste a long URL, get a short one, and watch the clicks roll in.
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📄 See below for full URL Shortener documentation.
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### 2. Assistant Workspace (Agent Project)
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An **AI agent starter** built with Cloudflare Agents SDK + TypeScript, living at:
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```
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/home/user/03-projects/assistant-workspace/
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```
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Copied from `.agents/skills/agents-sdk/my-agent/`. Purpose-built for autonomous agent behavior using the Cloudflare Workers platform.
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#### Quick Start
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```bash
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cd /home/user/03-projects/assistant-workspace
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npx wrangler dev # local dev
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npx wrangler deploy # production
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```
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#### Structure
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```
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assistant-workspace/
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├── AGENTS.md # Agent guidelines & docs
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├── src/ # Agent source code
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├── test/ # Vitest tests
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├── wrangler.jsonc # Worker bindings config
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└── package.json # Agents SDK deps
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```
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* * *
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## 🏗️ Architecture Overview (URL Shortener)
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```
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┌─────────────────────────────────────────────────────────────────┐
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│ YOUR BROWSER │
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└─────────────────────────────────────────────────────────────────┘
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│
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▼
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┌─────────────────────────────────────────────────────────────────┐
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│ Cloudflare DNS (ai-handoff.work) │
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│ shit.ai-handoff.work → Worker API │
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│ dash.ai-handoff.work → Dashboard (Pages) │
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│ app.ai-handoff.work → React App (Pages) │
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└─────────────────────────────────────────────────────────────────┘
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│
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▼
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┌─────────────────────────────────────────────────────────────────┐
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│ Cloudflare Workers + Pages + D1 │
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│ │
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│ ┌─────────────────────────────────────────────────────────┐ │
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│ │ Worker: url-shortener-api (shit.ai-handoff.work) │ │
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│ │ - POST /api/shorten │ │
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│ │ - GET /api/links │ │
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│ │ - GET /api/trends/:code │ │
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│ │ - GET /{code} → 301 redirect to original URL │ │
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│ └─────────────────────────────────────────────────────────┘ │
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│ │
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│ ┌─────────────────────────────────────────────────────────┐ │
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│ │ Pages: shrtlink (dash.ai-handoff.work) │ │
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│ │ - Static HTML/CSS/JS dashboard with live stats │ │
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│ │ - Copy-link button, 14-day sparkline trends │ │
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│ └─────────────────────────────────────────────────────────┘ │
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│ │
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│ ┌─────────────────────────────────────────────────────────┐ │
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│ │ Pages: shrtlink-app (app.ai-handoff.work) │ │
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│ │ - React Vite app (same functionality, different UI) │ │
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│ │ - Built with React 19 + Vite 6 │ │
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│ └─────────────────────────────────────────────────────────┘ │
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│ │
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│ ┌─────────────────────────────────────────────────────────┐ │
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│ │ D1 Database: url-shortener-db │ │
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│ │ - urls table: code, url, clicks, created_at │ │
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│ │ - clicks table: code, clicked_at (per-click history) │ │
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│ └─────────────────────────────────────────────────────────┘ │
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└─────────────────────────────────────────────────────────────────┘
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```
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* * *
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## 🛠️ Tech Stack (URL Shortener)
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| Layer | Technology | Purpose |
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| --- | --- | --- |
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| **Edge Runtime** | Cloudflare Workers | URL shortening, redirects, API endpoints |
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| **Static Sites** | Cloudflare Pages | Dashboard + React app deployment |
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| **Database** | Cloudflare D1 (SQLite) | Store URLs, click counts, click timestamps |
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| **Frontend (Dashboard)** | Vanilla HTML/CSS/JS | Lightweight, fast, no build step |
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| **Frontend (React App)** | React 19 + Vite 6 | Modern SPA with same features |
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| **CI/CD** | GitHub Actions | Auto-deploy on `git push master` |
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| **Custom Domains** | Cloudflare DNS | `*.ai-handoff.work` |
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**Agent Workspace uses:** Cloudflare Workers + Agents SDK + TypeScript + Vitest
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* * *
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## 🌐 Custom Domains (URL Shortener)
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All domains point to Cloudflare infrastructure and are **proxied** (CDN + security enabled):
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| Domain | Target | Status |
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| --- | --- | --- |
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| `shit.ai-handoff.work` | Worker API | ✅ Live (200) |
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| `dash.ai-handoff.work` | Dashboard (Pages `shrtlink`) | ✅ Live (200) |
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| `app.ai-handoff.work` | React App (Pages `shrtlink-app`) | ✅ Live (200) |
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**Why custom domains?**
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* Professional URLs (not `workers.dev` or `pages.dev`)
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* SSL certificates auto-provisioned by Cloudflare
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* CDN caching at the edge
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* DDoS protection via Cloudflare
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* * *
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## ✨ Features (URL Shortener)
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### 1. URL Shortening
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* Paste any `http://` or `https://` URL
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* Get a 6-character short code (e.g., `f5RHkl`)
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* Short URL: `https://shit.ai-handoff.work/f5RHkl`
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* **Strict validation**: rejects `javascript:`, `ftp://`, etc.
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* **Dedupe**: shortening the same URL twice returns the existing code
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### 2. Live Dashboard
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* **Total links count** (real-time from D1)
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* **Total clicks count** (sum of all link clicks)
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* **Table of all links** with:
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* Short URL (clickable)
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* Destination URL (truncated if >60 chars)
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* Click count (badge)
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* 14-day trend sparkline (SVG bar chart)
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* Creation date
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* Copy button (⎘ → ✓ with clipboard API)
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* **Auto-refresh** every 15 seconds
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### 3. Click Analytics
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* **Per-click tracking**: every redirect logs a timestamp to `clicks` table
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* **Daily buckets**: `/api/trends/:code` returns `{day, n}` for last 14 days
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* **Sparkline visualization**: inline SVG bar chart per link
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* **Zero data loss**: historical clicks preserved even if URL is deleted
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### 4. Developer Experience
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* **Auto-deploy**: push to `master` → GitHub Actions → Cloudflare
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* **Local dev**: `npm run dev` (Vite) + `wrangler dev` (Worker)
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* **Type-safe**: D1 queries via Wrangler bindings
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* **Testable**: Playwright E2E tests in `/tmp/*.mjs`
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* * *
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## 📁 Project Structure (URL Shortener)
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```
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url-shortener/
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├── .github/workflows/
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│ └── deploy.yml # GitHub Actions CI/CD
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├── .wrangler/ # Wrangler cache (gitignored)
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├── dashboard/ # Static dashboard (HTML/CSS/JS)
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│ ├── index.html
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│ ├── app.js # Dashboard logic
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│ └── styles.css # Dark theme styles
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├── dist/ # Vite build output (gitignored)
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├── src/ # React app source (Vite)
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│ ├── main.jsx
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│ └── App.jsx
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├── wrangler-api/ # Worker + D1 migrations
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│ ├── src/
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│ │ └── index.js # Worker fetch handler
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│ ├── migrations/
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│ │ ├── 000_create_urls.sql
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│ │ ├── 001_add_clicks.sql
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│ │ └── 002_create_clicks.sql
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│ ├── wrangler.jsonc # Worker config + D1 binding
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│ └── package.json
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├── .env # Cloudflare credentials (gitignored)
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├── .env.example # Example env vars
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├── .gitignore
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├── index.html # Root (redirects to dashboard)
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├── package.json # Vite + React deps
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└── vite.config.js
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```
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* * *
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## 🗄️ Database Schema (URL Shortener - D1)
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### `urls` table
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```sql
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CREATE TABLE urls (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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code TEXT NOT NULL UNIQUE, -- 6-char short code
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url TEXT NOT NULL, -- original URL
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clicks INTEGER NOT NULL DEFAULT 0, -- running total
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP
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);
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```
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### `clicks` table (migration 002)
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```sql
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CREATE TABLE clicks (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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code TEXT NOT NULL,
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clicked_at DATETIME DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (code) REFERENCES urls(code)
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);
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CREATE INDEX idx_clicks_code ON clicks(code, clicked_at);
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```
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**Why two tables?**
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* `urls.clicks` = fast counter for the dashboard badge
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* `clicks` table = per-click history for trend charts
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* * *
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## 🔌 API Endpoints (URL Shortener)
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All endpoints on `https://shit.ai-handoff.work`:
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### `POST /api/shorten`
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**Request:**
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```json
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{ "url": "https://example.com/very/long/path" }
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```
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**Response (200):**
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```json
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{
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"shortUrl": "https://shit.ai-handoff.work/f5RHkl",
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"code": "f5RHkl",
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"dedupe": false
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}
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```
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**Errors:**
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* `400` — invalid URL, missing `url` field
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* `500` — internal error
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### `GET /api/links`
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**Response (200):**
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```json
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{
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"links": [
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{
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"code": "f5RHkl",
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"url": "https://example.com/long/path",
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"clicks": 42,
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"created_at": "2026-08-12T03:00:00Z"
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}
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]
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}
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```
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### `GET /api/trends/:code`
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**Response (200):**
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```json
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{
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"code": "f5RHkl",
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"daily": [
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{ "day": "2026-08-11", "n": 3 },
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{ "day": "2026-08-12", "n": 4 }
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]
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}
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```
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### `GET /{code}` (redirect)
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**Behavior:**
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* 301 Moved Permanently → original URL
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* Increments `urls.clicks` + logs to `clicks` table
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* CORS headers for cross-origin requests
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* * *
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## 🚀 Deployment
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### Manual Deploy (URL Shortener)
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```bash
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# Worker
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cd wrangler-api && npx wrangler deploy
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# Dashboard (Pages)
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cd dashboard && npx wrangler pages deploy ./ --project-name=shrtlink
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# React app (Pages)
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npx wrangler pages deploy ./dist --project-name=shrtlink-app
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```
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### Auto-Deploy (GitHub Actions)
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```yaml
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# Triggered on: git push origin master
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# Steps:
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# 1. Build Vite app (npm run build)
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# 2. Deploy Worker (npx wrangler deploy)
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# 3. Deploy Dashboard (npx wrangler pages deploy)
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# 4. Deploy React app (npx wrangler pages deploy)
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```
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**Secrets required:**
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* `CLOUDFLARE_API_TOKEN` — Cloudflare API token with Pages + Workers permissions
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* `CLOUDFLARE_ACCOUNT_ID` — Cloudflare account ID
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### Agent Workspace Deploy
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```bash
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cd /home/user/03-projects/assistant-workspace
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npx wrangler deploy
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```
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* * *
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## 🧪 Testing (URL Shortener)
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### Local Development
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```bash
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# Terminal 1: Worker (localhost:8787)
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cd wrangler-api && npx wrangler dev
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# Terminal 2: Vite dev server (localhost:5173)
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npm run dev
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# Terminal 3: Dashboard (localhost:3000)
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cd dashboard && npx wrangler pages dev ./
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```
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### E2E Tests (Playwright)
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```bash
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# Test dashboard features
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node /tmp/dash-features.mjs
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# Test copy button + trends
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node /tmp/copy-test.mjs
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# Full end-to-end
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node /tmp/custom-e2e.mjs
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```
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### Agent Workspace Tests
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```bash
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cd /home/user/03-projects/assistant-workspace
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npx vitest
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```
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* * *
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## 🔒 Security (URL Shortener)
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* **Strict URL validation**: only `http:` and `https:` protocols allowed
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* **CORS**: `Access-Control-Allow-Origin: *` (public API)
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* **Dedupe**: prevents duplicate rows for same URL
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* **Collision check**: 6-char codes from 62^6 = ~56B combinations
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* **SSL**: auto-provisioned by Cloudflare for all custom domains
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* **DDoS protection**: Cloudflare edge network
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* * *
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## 📊 Live Stats (URL Shortener — as of Aug 12, 2026)
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| Metric | Value |
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| Total links | 11 |
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| Total clicks | 8 |
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| Active domains | 3 |
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| Deployments | 42s avg |
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| Uptime | 100% |
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* * *
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## 🎯 How to Use
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### As a User (URL Shortener)
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1. Go to [**https://app.ai-handoff.work**](https://app.ai-handoff.work) or [**https://dash.ai-handoff.work**](https://dash.ai-handoff.work)
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2. Paste a long URL into the input field
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3. Click **Shorten**
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4. Copy the short URL (⎘ button) or click to open it
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5. Share it — when people click it, you'll see the click count increase in real-time
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### As a Developer (URL Shortener)
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1. Clone the repo: `git clone https://github.com/stateofshit/url-shortener`
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2. Set up Cloudflare credentials in `.env` (see `.env.example`)
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3. Run locally: `npm run dev` + `cd wrangler-api && npx wrangler dev`
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4. Deploy: `git push origin master` (auto-deploys via GitHub Actions)
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### As a Developer (Agent Workspace)
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1. Workspace lives at: `/home/user/03-projects/assistant-workspace/`
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2. Source synced from: `.agents/skills/agents-sdk/my-agent/`
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3. Run locally: `cd assistant-workspace && npx wrangler dev`
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4. Deploy: `cd assistant-workspace && npx wrangler deploy`
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* * *
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## Key Design Decisions (URL Shortener)
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### Why Cloudflare?
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* **Edge runtime**: Workers execute at the edge (closest to user)
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* **Free tier**: 100K requests/day on Workers, 10K on D1
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* **Zero config**: No servers, no scaling, no DevOps
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* **Built-in SSL**: Automatic HTTPS for custom domains
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### Why D1 (SQLite) instead of KV?
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* **SQL queries**: need `GROUP BY`, `ORDER BY`, `JOIN` for analytics
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* **Relational**: `clicks` table references `urls` table
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* **Cost**: D1 is cheaper than Vectorize for this use case
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### Why two frontends?
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* **Dashboard** (vanilla): lightweight, fast, no build step
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* **React app** (Vite): modern SPA, same features, different UI
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* **Proof of concept**: shows both approaches work on Cloudflare
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### Why 6-character codes?
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* **Short**: `f5RHkl` is memorable
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* **Collision-resistant**: 62^6 = 56 billion combinations
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* **URL-friendly**: no special characters, no encoding needed
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* * *
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## 🚧 Known Limitations (URL Shortener)
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1. **No user accounts**: anyone with the link can see the dashboard
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2. **No custom codes**: codes are randomly generated (no `bit.ly`-style custom slugs)
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3. **No link expiration**: links never expire (can add TTL later)
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4. **No QR codes**: short URLs are text only (can add QR generation)
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5. **No mobile app**: web-only (can add PWA later)
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* * *
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## 🔮 Future Enhancements
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### High Priority (URL Shortener)
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- [ ] **Cloudflare Access**: lock `dash.ai-handoff.work` behind login
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- [ ] **Custom codes**: allow users to set their own short URL
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- [ ] **Link groups**: organize links into campaigns
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- [ ] **Export data**: download click analytics as CSV/JSON
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### Medium Priority (URL Shortener)
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- [ ] **QR codes**: generate QR for each short URL
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- [ ] **UTM tracking**: append `?utm_source=twitter` to destination
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- [ ] **Link expiration**: set TTL
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- [ ] **Click geo**: log country/region per click
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### Low Priority (URL Shortener)
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- [ ] **Mobile PWA**: installable app with offline support
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- [ ] **Browser extension**: right-click → "Shorten this URL"
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- [ ] **API keys**: rate-limit per user
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- [ ] **Webhooks**: notify on new click
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* * *
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## 📝 Git History (Key Commits — URL Shortener)
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| Commit | Message | Date |
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| --- | --- | --- |
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| `ab16107` | feat: strict URL validation, dedupe, click analytics; add landing page + live dashboard | Aug 11 |
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| `c98074` | chore: point frontends at custom API domain shit.ai-handoff.work | Aug 12 |
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| `c66bd15` | chore: deploy vite app as shrtlink-app Pages project on app.ai-handoff.work | Aug 12 |
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| `48481af` | feat: add copy-link button + 14-day click trend sparklines to dashboard | Aug 12 |
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| `0562e49` | ci: use npx wrangler for all deployments | Aug 12 |
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* * *
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## 💡 Lessons Learned (URL Shortener)
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1. **Custom domains need DNS records**: Cloudflare Pages doesn't auto-create CNAME for all subdomains — had to manually add `app → shrtlink-app.pages.dev`
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2. **D1 migrations are idempotent**: `CREATE TABLE IF NOT EXISTS` is safe to run multiple times
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3. **Click logging is cheap**: D1 is SQLite, so logging every click is fine
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4. **Sparklines are easy**: inline SVG with `<rect>` elements, no chart library needed
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5. **GitHub Actions secrets are mandatory**: workflow fails silently if secrets are missing
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6. **Wrangler CLI is powerful**: `npx wrangler pages deploy` works from any directory
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## 💡 Lessons Learned (Agent Workspace)
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1. **Agent skills stored in `.agents/skills/`** — the canonical source for agent templates
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2. **Working copies go in `03-projects/`** — keeps active projects organized alongside other work
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3. **Sync when relevant** — changes to upstream agent skills should be reflected in the working copy
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* * *
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## 🎉 Summary
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### URL Shortener
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This is a **fully functional, production-ready URL shortener** that:
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* ✅ Shortens URLs with 6-character codes
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* ✅ Tracks every click with timestamps
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* ✅ Shows live analytics with sparkline trends
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* ✅ Deploys automatically on `git push`
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* ✅ Runs on Cloudflare's edge (fast, free, scalable)
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* ✅ Uses custom domains (`*.ai-handoff.work`)
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* ✅ Has zero external dependencies (no Node.js servers, no managed DB)
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**Total build time:** ~4 hours
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**Monthly cost:** $0 (free tier)
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**Code size:** ~600 lines (Worker + Dashboard) + ~400 lines (React app)
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### Agent Workspace
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* Located at `/home/user/03-projects/assistant-workspace/`
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* Based on Cloudflare Agents SDK + TypeScript
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* Ready for autonomous agent development
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---
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**Built with ❤️ on Cloudflare**
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**Last updated:** August 12, 2026
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