DiunDashboard/.claude/CLAUDE.md

CLAUDE.md

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

Commands

# Run all tests with coverage
go test -v -coverprofile=coverage.out -coverpkg=./... ./...

# Run a single test
go test -v -run TestWebhookHandler ./test/diunwebhook/

# Run the app locally
go run ./cmd/diunwebhook/

# Build Docker image
docker build -t diun-webhook-dashboard .

# Run with Docker Compose
docker compose up -d

CI warns (but does not fail) when coverage drops below 80%.

Architecture

The app is a minimal Go HTTP server that receives DIUN webhook events and exposes them via a JSON API and static HTML dashboard. All state is in-memory (no persistence).

Package layout:

• pkg/diunwebhook/ — core library: DiunEvent struct, in-memory updates map (guarded by sync.Mutex), and HTTP handlers (WebhookHandler, UpdatesHandler)
• cmd/diunwebhook/main.go — wires the handlers and static file server onto net/http's default mux, listens on :8080
• test/diunwebhook/ — external test package (package diunwebhook_test) that imports pkg/diunwebhook; uses httptest for handler tests
• static/ — served verbatim at /

Key data flow:

1. DIUN POSTs JSON to /webhook → WebhookHandler decodes into DiunEvent → stored in updates[event.Image] (latest event per image wins)
2. Dashboard JS polls GET /api/updates → UpdatesHandler returns full map as JSON

Test helpers exposed from the library package (not part of the public API, only for tests): GetUpdatesMap(), UpdatesReset(), UpdateEvent().