demo.go

package cmd

import (
	"fmt"
	"log"

	"github.com/codegangsta/cli"
	"github.com/exercism/cli/api"
	"github.com/exercism/cli/config"
	"github.com/exercism/cli/user"
)

// Demo returns one problem for each active track.
func Demo(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	client := api.NewClient(c)

	problems, err := client.Demo()
	if err != nil {
		log.Fatal(err)
	}

	if dirOpt := ctx.String("dir"); dirOpt != "" {
		c.SetDir(dirOpt)
	}

	fmt.Printf("Your exercises will be saved at: %s\n", c.Dir)
	hw := user.NewHomework(problems, c)
	if err := hw.Save(); err != nil {
		log.Fatal(err)
	}

	hw.Report(user.HWAll)

	fmt.Println("Next step: choose a language, read the README, and make the test suite pass.")
}