Imports cloud.google.com/go/firestore cloud.google.com/go/storage firebase.google.com/go github.com/google/uuid github.com/mitchellh/mapstructure github.com/spf13/viper go.mongodb.org/mongo-driver/mongo google.golang.org/api/iterator google.golang.org/api/option Standard library imports context errors fmt io log mime/multipart strconv strings time