package main

import (
    "errors"
    "fmt"
    "log"
    "os"

    "github.com/salsita/go-pivotaltracker/v5/pivotal"
)

func main() {
    if err := run(); err != nil {
        log.Fatalln("\nError:", err)
    }
}

func run() error {
    args := os.Args[1:]
    if len(args) != 1 {
        fmt.Fprintln(os.Stderr, "Usage: migrate PT_PROJECT_ID")
        return errors.New("CL arguments invalid")
    }

    token := os.Getenv("PT_TOKEN")
    if token == "" {
        return fmt.Errorf("Environment variable PT_TOKEN is not set")
    }

    client := pivotal.NewClient(token)
}