Separate cmd package for easier importing (#11)

main.go

@@ -1,91 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"os"
-
-	"github.com/joho/godotenv"
-	"github.com/urfave/cli"
-)
-
-func main() {
-	loadDotEnv()
-
-	app := NewApp()
-	err := app.Run(os.Args)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "Error: %s\n", err)
-		os.Exit(1)
-	}
-}
-
-// NewApp creates a new command line app
-func NewApp() *cli.App {
-	app := cli.NewApp()
-	app.Name = "dbmate"
-	app.Usage = "A lightweight, framework-independent database migration tool."
-	app.Version = Version
-
-	app.Flags = []cli.Flag{
-		cli.StringFlag{
-			Name:  "migrations-dir, d",
-			Value: "./db/migrations",
-			Usage: "specify the directory containing migration files",
-		},
-		cli.StringFlag{
-			Name:  "env, e",
-			Value: "DATABASE_URL",
-			Usage: "specify an environment variable containing the database URL",
-		},
-	}
-
-	app.Commands = []cli.Command{
-		{
-			Name:    "new",
-			Aliases: []string{"n"},
-			Usage:   "Generate a new migration file",
-			Action:  NewCommand,
-		},
-		{
-			Name:   "up",
-			Usage:  "Create database (if necessary) and migrate to the latest version",
-			Action: UpCommand,
-		},
-		{
-			Name:   "create",
-			Usage:  "Create database",
-			Action: CreateCommand,
-		},
-		{
-			Name:   "drop",
-			Usage:  "Drop database (if it exists)",
-			Action: DropCommand,
-		},
-		{
-			Name:   "migrate",
-			Usage:  "Migrate to the latest version",
-			Action: MigrateCommand,
-		},
-		{
-			Name:    "rollback",
-			Aliases: []string{"down"},
-			Usage:   "Rollback the most recent migration",
-			Action:  RollbackCommand,
-		},
-	}
-
-	return app
-}
-
-type command func(*cli.Context) error
-
-func loadDotEnv() {
-	if _, err := os.Stat(".env"); err != nil {
-		return
-	}
-
-	if err := godotenv.Load(); err != nil {
-		log.Fatal("Error loading .env file")
-	}
-}