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

pkg/diunwebhook/diunwebhook.go

@@ -0,0 +1,82 @@
+package diunwebhook
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"sync"
+	"time"
+)
+
+type DiunEvent struct {
+	DiunVersion string    `json:"diun_version"`
+	Hostname    string    `json:"hostname"`
+	Status      string    `json:"status"`
+	Provider    string    `json:"provider"`
+	Image       string    `json:"image"`
+	HubLink     string    `json:"hub_link"`
+	MimeType    string    `json:"mime_type"`
+	Digest      string    `json:"digest"`
+	Created     time.Time `json:"created"`
+	Platform    string    `json:"platform"`
+	Metadata    struct {
+		ContainerName string `json:"ctn_names"`
+		ContainerID   string `json:"ctn_id"`
+		State         string `json:"ctn_state"`
+		Status        string `json:"ctn_status"`
+	} `json:"metadata"`
+}
+
+var (
+	mu      sync.Mutex
+	updates = make(map[string]DiunEvent)
+)
+
+// 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 {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	UpdateEvent(event)
+
+	log.Printf("Update received: %s (%s)", event.Image, event.Status)
+
+	w.WriteHeader(http.StatusOK)
+}
+
+func UpdatesHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(GetUpdates()); err != nil {
+		log.Printf("failed to encode updates: %v", err)
+	}
+}