CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

This is a WeChat Mini Program called "徵象" (emblem-scanner) for QR code scanning and processing. The app connects to the Themblem service for QR code verification and includes camera functionality with device-specific optimizations.

Architecture

Main App Structure:

app.js - Main application entry point with global data and worker initialization
utils.js - Utility functions for camera rules, device detection, and QR code extraction
pages/ - WeChat Mini Program pages (index, camera, debug, webview, etc.)
components/ - Reusable UI components (scanguide, tooltips, modals, etc.)
worker/ - WebAssembly worker thread for QR code processing using qrtool library
static/ - Static assets and resources

Key Components:

Camera system with device-specific zoom rules fetched from API
WebAssembly-based QR processing in worker thread for performance
Dual camera modes: native camera (pages/camera/) and web view (pages/camwebview/)
Upload and verification system connecting to themblem.com API

Global Data:

server_url: 'https://themblem.com' - main API endpoint
session_id: Generated unique session identifier
real_ip: User's IP address fetched from external service
worker: WebAssembly worker for QR processing

Development Commands

This is a WeChat Mini Program project. Development is done through WeChat Developer Tools IDE.

Linting:

# ESLint configuration available but no npm scripts defined
# Lint manually using WeChat Developer Tools or external ESLint

No test framework or build scripts are configured in package.json

Key Files

project.config.json - WeChat Mini Program configuration
app.json - App pages, window settings, and worker configuration
utils.js - Core utility functions for camera and QR code handling
worker/index.js - WebAssembly QR code processing worker
precheck.js - QR code frame validation logic
upload.js - Image upload and verification functions

Dependencies

lottie-miniprogram - Lottie animations support
WebAssembly qrtool library (qrtool.wx.js) - QR code processing

External APIs

https://themblem.com/api/v1/camera-rules/ - Device-specific camera settings
https://themblem.com/api/v1/check-auto-torch/ - Auto torch functionality
https://whatsmyip.hondcloud.com - IP address detection
https://research.themblem.com/event/ - Event tracking endpoint

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