feat: add heartbeat check for bug report API and enhance logging throughout the application

app_heartbeat.go

@@ -0,0 +1,45 @@
+// Package main provides heartbeat checking for the bug report API.
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"emly/backend/utils"
+)
+
+// CheckBugReportAPI sends a GET request to the bug report API's /health
+// endpoint with a short timeout. Returns true if the API responds with
+// status 200, false otherwise. This is exposed to the frontend.
+func (a *App) CheckBugReportAPI() bool {
+	cfgPath := utils.DefaultConfigPath()
+	cfg, err := utils.LoadConfig(cfgPath)
+	if err != nil {
+		Log("Heartbeat: failed to load config:", err)
+		return false
+	}
+
+	apiURL := cfg.EMLy.BugReportAPIURL
+	if apiURL == "" {
+		Log("Heartbeat: bug report API URL not configured")
+		return false
+	}
+
+	endpoint := apiURL + "/health"
+	client := &http.Client{Timeout: 3 * time.Second}
+
+	resp, err := client.Get(endpoint)
+	if err != nil {
+		Log("Heartbeat: API unreachable:", err)
+		return false
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		Log(fmt.Sprintf("Heartbeat: API returned status %d", resp.StatusCode))
+		return false
+	}
+
+	return true
+}