Refactor project structure: modularized code into pkg and cmd directories, added unit tests, improved CI/CD pipeline, and enhanced documentation.

.gitea/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.21'
+      - name: Run tests with coverage
+        run: |
+          go test -v -coverprofile=coverage.out ./...
+          go tool cover -func=coverage.out | tee coverage.txt
+          cov=$(go tool cover -func=coverage.out | grep total: | awk '{print substr($3, 1, length($3)-1)}')
+          cov=${cov%.*}
+          if [ "$cov" -lt 80 ]; then
+            echo "::warning::Test coverage is below 80% ($cov%)"
+          fi
+      - name: Build Docker image
+        run: docker build -t diun-webhook-dashboard .
+

Dockerfile

@@ -1,11 +1,15 @@
+# syntax=docker/dockerfile:1
 FROM golang:1.26-alpine AS builder
 WORKDIR /app
-COPY . .
-RUN go build -o app
+COPY go.mod .
 
-FROM alpine:latest
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 go build -o server ./cmd/diunwebhook/main.go
+
+FROM alpine:3.18
 WORKDIR /app
-COPY --from=builder /app/app .
+COPY --from=builder /app/server ./server
 COPY static ./static
 EXPOSE 8080
-CMD ["./app"]
+CMD ["./server"]

README.md

@@ -55,6 +55,12 @@ Expected JSON payload (simplified):
 
 Note: data is only kept in-memory and will be reset on restart.
 
+## Project Structure
+
+- `cmd/diunwebhook/` — main application source and tests
+- `static/` — static assets
+- `Dockerfile`, `docker-compose.yml`, `go.mod`, `go.sum` — project config/build files
+
 ## Development
 - Code: `main.go`
 - Static assets: `static/`
@@ -65,5 +71,19 @@ Note: data is only kept in-memory and will be reset on restart.
 - Persistence is not implemented; hook up a store (e.g., BoltDB/Redis/Postgres) if you need durability.
 - Consider adding auth, rate limiting, or a secret/token on the webhook endpoint if exposed publicly.
 
+## Testing
+
+Run unit tests and check coverage:
+
+```bash
+go test -v -cover
+```
+
+Aim for 80–90% coverage. Coverage below 80% will emit a warning in CI but will not fail the pipeline.
+
+## CI/CD with Gitea Actions
+
+A sample Gitea Actions workflow is provided in `.gitea/workflows/ci.yml` to automate build, test, and coverage checks.
+
 ## License
 MIT — see `LICENSE`.

cmd/diunwebhook/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"log"
+	"net/http"
+
+	diun "awesomeProject/pkg/diunwebhook"
+)
+
+func main() {
+	http.HandleFunc("/webhook", diun.WebhookHandler)
+	http.HandleFunc("/api/updates", diun.UpdatesHandler)
+	http.Handle("/", http.FileServer(http.Dir("./static")))
+
+	log.Println("Listening on :8080")
+	log.Fatal(http.ListenAndServe(":8080", nil))
+}

pkg/diunwebhook/diunwebhook.go

@@ -1,4 +1,4 @@
-package main
+package diunwebhook
 
 import (
 	"encoding/json"
@@ -32,7 +32,34 @@ var (
 	updates = make(map[string]DiunEvent)
 )
 
-func webhookHandler(w http.ResponseWriter, r *http.Request) {
+// Exported for test package
+func GetUpdatesMap() map[string]DiunEvent {
+	return updates
+}
+
+func UpdatesReset() {
+	mu.Lock()
+	defer mu.Unlock()
+	updates = make(map[string]DiunEvent)
+}
+
+func UpdateEvent(event DiunEvent) {
+	mu.Lock()
+	defer mu.Unlock()
+	updates[event.Image] = event
+}
+
+func GetUpdates() map[string]DiunEvent {
+	mu.Lock()
+	defer mu.Unlock()
+	updatesCopy := make(map[string]DiunEvent, len(updates))
+	for k, v := range updates {
+		updatesCopy[k] = v
+	}
+	return updatesCopy
+}
+
+func WebhookHandler(w http.ResponseWriter, r *http.Request) {
 	var event DiunEvent
 
 	if err := json.NewDecoder(r.Body).Decode(&event); err != nil {
@@ -40,29 +67,16 @@ func webhookHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	mu.Lock()
-	// Use image as key (or container name if preferred)
-	updates[event.Image] = event
-	mu.Unlock()
+	UpdateEvent(event)
 
 	log.Printf("Update received: %s (%s)", event.Image, event.Status)
 
 	w.WriteHeader(http.StatusOK)
 }
 
-func updatesHandler(w http.ResponseWriter, r *http.Request) {
-	mu.Lock()
-	defer mu.Unlock()
-
+func UpdatesHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(updates)
+	if err := json.NewEncoder(w).Encode(GetUpdates()); err != nil {
+		log.Printf("failed to encode updates: %v", err)
 	}
-
-func main() {
-	http.HandleFunc("/webhook", webhookHandler)
-	http.HandleFunc("/api/updates", updatesHandler)
-	http.Handle("/", http.FileServer(http.Dir("./static")))
-
-	log.Println("Listening on :8080")
-	log.Fatal(http.ListenAndServe(":8080", nil))
 }

test/diunwebhook/main_test.go

@@ -0,0 +1,152 @@
+package diunwebhook_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	diun "awesomeProject/pkg/diunwebhook"
+)
+
+func TestUpdateEventAndGetUpdates(t *testing.T) {
+	diun.UpdatesReset() // helper to reset global state
+	event := diun.DiunEvent{
+		DiunVersion: "1.0",
+		Hostname:    "host",
+		Status:      "new",
+		Provider:    "docker",
+		Image:       "nginx:latest",
+		HubLink:     "https://hub.docker.com/nginx",
+		MimeType:    "application/json",
+		Digest:      "sha256:abc",
+		Created:     time.Now(),
+		Platform:    "linux/amd64",
+	}
+	diun.UpdateEvent(event)
+	got := diun.GetUpdates()
+	if len(got) != 1 {
+		t.Fatalf("expected 1 update, got %d", len(got))
+	}
+	if got["nginx:latest"].DiunVersion != "1.0" {
+		t.Errorf("unexpected DiunVersion: %s", got["nginx:latest"].DiunVersion)
+	}
+}
+
+func TestWebhookHandler(t *testing.T) {
+	diun.UpdatesReset() // reset global state
+	event := diun.DiunEvent{
+		DiunVersion: "2.0",
+		Hostname:    "host2",
+		Status:      "updated",
+		Provider:    "docker",
+		Image:       "alpine:latest",
+		HubLink:     "https://hub.docker.com/alpine",
+		MimeType:    "application/json",
+		Digest:      "sha256:def",
+		Created:     time.Now(),
+		Platform:    "linux/amd64",
+	}
+	body, _ := json.Marshal(event)
+	req := httptest.NewRequest(http.MethodPost, "/webhook", bytes.NewReader(body))
+	rec := httptest.NewRecorder()
+	diun.WebhookHandler(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Errorf("expected status 200, got %d", rec.Code)
+	}
+	if len(diun.GetUpdatesMap()) != 1 {
+		t.Errorf("expected 1 update, got %d", len(diun.GetUpdatesMap()))
+	}
+}
+
+func TestWebhookHandler_BadRequest(t *testing.T) {
+	req := httptest.NewRequest(http.MethodPost, "/webhook", bytes.NewReader([]byte("not-json")))
+	rec := httptest.NewRecorder()
+	diun.WebhookHandler(rec, req)
+	if rec.Code != http.StatusBadRequest {
+		t.Errorf("expected 400 for bad JSON, got %d", rec.Code)
+	}
+}
+
+func TestUpdatesHandler(t *testing.T) {
+	diun.UpdatesReset() // reset global state
+	event := diun.DiunEvent{Image: "busybox:latest"}
+	diun.UpdateEvent(event)
+	req := httptest.NewRequest(http.MethodGet, "/api/updates", nil)
+	rec := httptest.NewRecorder()
+	diun.UpdatesHandler(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Errorf("expected status 200, got %d", rec.Code)
+	}
+	var got map[string]diun.DiunEvent
+	if err := json.NewDecoder(rec.Body).Decode(&got); err != nil {
+		t.Fatalf("failed to decode response: %v", err)
+	}
+	if _, ok := got["busybox:latest"]; !ok {
+		t.Errorf("expected busybox:latest in updates")
+	}
+}
+
+// Helper for simulating a broken ResponseWriter
+// Used in TestUpdatesHandler_EncodeError
+type failWriter struct{ http.ResponseWriter }
+
+func (f failWriter) Header() http.Header       { return http.Header{} }
+func (f failWriter) Write([]byte) (int, error) { return 0, errors.New("forced error") }
+func (f failWriter) WriteHeader(_ int)         {}
+
+func TestUpdatesHandler_EncodeError(t *testing.T) {
+	rec := failWriter{httptest.NewRecorder()}
+	diun.UpdatesHandler(rec, httptest.NewRequest(http.MethodGet, "/api/updates", nil))
+	// No panic = pass
+}
+
+func TestMainHandlerIntegration(t *testing.T) {
+	diun.UpdatesReset() // reset global state
+	// Start test server
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/webhook" {
+			diun.WebhookHandler(w, r)
+		} else if r.URL.Path == "/api/updates" {
+			diun.UpdatesHandler(w, r)
+		} else {
+			w.WriteHeader(http.StatusNotFound)
+		}
+	}))
+	defer ts.Close()
+
+	// Post event
+	event := diun.DiunEvent{Image: "integration:latest"}
+	body, _ := json.Marshal(event)
+	resp, err := http.Post(ts.URL+"/webhook", "application/json", bytes.NewReader(body))
+	if err != nil {
+		t.Fatalf("webhook POST failed: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("webhook POST returned status: %d", resp.StatusCode)
+	}
+	if cerr := resp.Body.Close(); cerr != nil {
+		t.Errorf("failed to close response body: %v", cerr)
+	}
+
+	// Get updates
+	resp, err = http.Get(ts.URL + "/api/updates")
+	if err != nil {
+		t.Fatalf("GET /api/updates failed: %v", err)
+	}
+	defer func() {
+		if cerr := resp.Body.Close(); cerr != nil {
+			t.Errorf("failed to close response body: %v", cerr)
+		}
+	}()
+	var got map[string]diun.DiunEvent
+	if err := json.NewDecoder(resp.Body).Decode(&got); err != nil {
+		t.Fatalf("decode failed: %v", err)
+	}
+	if _, ok := got["integration:latest"]; !ok {
+		t.Errorf("expected integration:latest in updates")
+	}
+}