fix: handle empty data set

api/app/v1/core/jokes.go

@@ -45,7 +45,12 @@ func GetRandomJokeFromCache(memory *cache.Cache) (string, error) {
 		return "", nil
 	}
 
-	random := rand.Intn(len(data))
+	dataLength := len(data)
+	if dataLength == 0 {
+		return "", models.ErrEmpty
+	}
+
+	random := rand.Intn(dataLength)
 	joke := data[random].Link
 
 	return joke, nil

api/app/v1/models/sql.go

@@ -7,3 +7,4 @@ var ErrConnDone = errors.New("connection is already closed")
 var ErrTxDone = errors.New("transaction has already been committed or rolled back")
 
 var ErrNotFound = errors.New("record not found")
+var ErrEmpty = errors.New("record is empty")

api/app/v1/platform/database/create.go

@@ -7,7 +7,7 @@ import (
 	"github.com/aldy505/bob"
 )
 
-// Set up the table connection, create table if not exists
+// Setup the table connection, create table if not exists
 func Setup() error {
 	db := New()