Imports github.com/alecthomas/participle/v2 github.com/alecthomas/participle/v2/lexer github.com/labstack/echo/v4 github.com/labstack/echo/v4/middleware github.com/mb-14/gomarkov github.com/urfave/cli/v2 Standard library imports bufio fmt log math/rand net/http os strings text/scanner unicode