long poll helper first draft - untested

client/helpers/backgroundHelper.go

@@ -1,11 +1,13 @@
 package helpers
 
 import (
+	"context"
 	"errors"
 	"log"
 	"os"
 	"path/filepath"
 	"strconv"
+	"sync"
 	"time"
 
 	"forge.redroom.link/yves/meowlib"
@@ -188,3 +190,50 @@ func ReadMessage(messageFilename string) ([]string, []string, string, error) {
 	//  list of messages & detached files
 	return messagesOverview, filenames, "", nil
 }
+
+// CheckForMessages checks for messages on a single server
+func LongPollForMessages(storage_path string, jobs []client.RequestsJob, timeout int, longPoll bool) (int, string, error) {
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	resultChan := make(chan int, len(jobs)) // We'll just send counts here
+
+	var wg sync.WaitGroup
+
+	for _, job := range jobs {
+		wg.Add(1)
+		go func(job client.RequestsJob) {
+			defer wg.Done()
+
+			for {
+				select {
+				case <-ctx.Done():
+					return
+				default:
+					cnt, _, err := CheckForMessages(storage_path, &job, timeout, true)
+					if err != nil {
+						continue // Optionally handle/log error
+					}
+					if cnt > 0 {
+						select {
+						case resultChan <- cnt:
+						case <-ctx.Done():
+						}
+						cancel()
+
+						return
+					}
+				}
+			}
+		}(job)
+	}
+
+	// Wait for a result or context timeout
+	select {
+	case cnt := <-resultChan:
+		return cnt, "", nil
+	case <-ctx.Done():
+		return 0, "", nil
+	}
+}