Imports github.com/Fengxq2014/coupon/common/log github.com/Fengxq2014/coupon/controllers github.com/Fengxq2014/coupon/db github.com/gin-gonic/gin github.com/joho/godotenv github.com/mattn/go-isatty Standard library imports bytes context fmt io net/http os os/signal path/filepath time