chore: update code

src/modules/tasks/tasks.go

@@ -0,0 +1,35 @@
+package tasks
+
+import (
+	"log"
+	"os"
+	"strings"
+)
+
+func isYaml(filename string) bool {
+	return strings.HasSuffix(filename, ".yaml") || strings.HasSuffix(filename, ".yml")
+}
+
+func ListAvailableBooks() ([]string, error) {
+	files, err := os.ReadDir("./books")
+	if err != nil {
+		log.Printf("failed to read the './books' directory: %v", err)
+		return []string{}, err
+	}
+
+	foundBooks := []string{}
+	for _, f := range files {
+		if f.IsDir() {
+			continue
+		}
+
+		fName := f.Name()
+		log.Println(fName)
+		if isYaml(fName) {
+			fullRelPath := "./books/" + fName
+			foundBooks = append(foundBooks, fullRelPath)
+		}
+	}
+
+	return foundBooks, nil
+}