repo.go

package main

import (
	"fmt"
	"github.com/codegangsta/cli"
	"os"
)

func main() {
	app := cli.NewApp()
	app.Name = "repo"
	app.Usage = "to deal with maven repositories"
	app.Version = "0.1.0"
	app.Commands = []cli.Command{
		{
			Name:      "pull",
			ShortName: "d",
			Flags: []cli.Flag{
				cli.StringFlag{
					Name:   "destination,d",
					Usage:  "Defines download destination.",
					EnvVar: "MVN_DEST",
					Value:  ".",
				},
				cli.StringFlag{
					Name:   "baseUrl,b",
					Usage:  "Defines maven base repo url",
					EnvVar: "MVN_BASE_URL",
					Value:  "http://central.maven.org/maven2",
				},
				cli.StringFlag{
					Name:   "template,t",
					Usage:  "Defines file template",
					EnvVar: "MVN_FILE_TMPL",
					Value:  "{{.Id}}-{{.Version}}.{{.Ext}}",
				},
				cli.BoolFlag{
					Name:  "verbose,v",
					Usage: "verbose output.",
				},
				cli.BoolFlag{
					Name:  "recursive,r",
					Usage: "Recursive download of pom dependencies",
				},
				cli.StringFlag{
					Name:  "extension,e",
					Usage: "Default extension",
					Value: "jar",
				},
			},
			Usage:  "Downloads artifact from maven repository.",
			Action: DownloadCommand,
		},
	}
	app.Run(os.Args)
}

func prepareArtifact(c *cli.Context) []Artifact {

	artifacts := make([]Artifact, 0)
	
	for _, el := range c.Args() {
		artifact, err := ParseArtifact(el, c.String("e"))
		checkError(err)
		artifacts = append(artifacts, artifact)
	}

	return artifacts
}

func DownloadCommand(c *cli.Context) {

	if c.Bool("verbose") {
		fmt.Println("[INFO] Destination: " + c.String("d"))
		fmt.Println("[INFO] Template: " + c.String("t"))
		fmt.Println("[INFO] Base URL: " + c.String("b"))
	}

	if len(c.Args()) > 0 {
		conf := Config{
			c.String("b"),
			c.String("d"),
			c.String("t"),
			false,
			5,
			c.Bool("r"),
		}
		tracker := NewTracker(conf)
		for _, a := range prepareArtifact(c) {
			tracker.Request(a)
		}
		checkError(tracker.Wait())
	} else if c.Bool("verbose") {
		fmt.Println("[INFO] No artifacts defined. Nothing to do." )	
	}
}