Imports firebase.google.com/go firebase.google.com/go/messaging github.com/bitly/go-simplejson github.com/dgrijalva/jwt-go github.com/go-sql-driver/mysql github.com/joho/godotenv google.golang.org/api/option Standard library imports bufio context crypto/sha256 encoding/hex fmt io log math math/rand os os/exec regexp runtime strings time unicode