Creating a phone number location lookup tool presents an interesting opportunity to explore desktop application development using Go with a web-like workflow.

The Core Problem

Phone number attribution follows a straightforward pattern:

• The first 7 digits determine carrier and region
• Data is publicly available through various sources

The challenge isn't the lookup logic, but rather creating a solution that:

• Works completely offline
• Handles bulk processing efficiently
• Requires no additional dependencies

Why Go + Wails?

This combination offers several advantages:

// Initialize a Wails project with Vue template
wails init -n project-name -t vue

• Go Benefits:
  • Single binary output
  • Excellent for local tooling
  • Strong file/data handling
• Wails Benefits:
  • Web-based UI development
  • No HTTP server required
  • Direct Go method calls from frontend

Key Architectural Differences

Unlike traditinoal web development:

• No routing layer needed
• app.go methods are directly exposed to frontend
• Service/Reposiotry patterns remain identical

Handling Large Datasets

The solution for 480,000+ phone number records:

1. Pre-generate complete SQLite database
2. Embed using Go's embed.FS
3. Copy pre-built database on first launch

Development Workflow

The process mirrors web development:

1. Implement Go service layer
2. Expose methods in app.go
3. Call directly from frontend
4. Build with wails build

Project repository available at: https://github.com/zxc7563598/go-mobile-locator