func (g *Bash) Write(f *buildfile.Buildfile) {
	g.Script = append(g.Script, g.Command)

	for _, cmd := range g.Script {
		f.WriteCmd(cmd)
	}
}

func (m *Marathon) Write(f *buildfile.Buildfile) {
	// debugging purposes so we can see if / where something is failing
	f.WriteCmdSilent("echo 'deploying to Marathon ...'")

	post := fmt.Sprintf(
		"curl -X POST -d @%s http://%s/v2/apps --header \"Content-Type:application/json\"",
		m.ConfigFile,
		m.Host,
	)
	f.WriteCmdSilent(post)
}

func (cf *CloudFoundry) Write(f *buildfile.Buildfile) {
	downloadCmd := "curl -sLO http://go-cli.s3-website-us-east-1.amazonaws.com/releases/latest/cf-cli_amd64.deb"
	installCmd := "dpkg -i cf-cli_amd64.deb 1> /dev/null 2> /dev/null"

	// download and install the cf tool
	f.WriteCmdSilent(fmt.Sprintf("[ -f /usr/bin/sudo ] && sudo %s || %s", downloadCmd, downloadCmd))
	f.WriteCmdSilent(fmt.Sprintf("[ -f /usr/bin/sudo ] && sudo %s || %s", installCmd, installCmd))

	// login
	loginCmd := "cf login -a %s -u %s -p %s"

	organization := cf.Org
	if organization != "" {
		loginCmd += fmt.Sprintf(" -o %s", organization)
	}

	space := cf.Space
	if space != "" {
		loginCmd += fmt.Sprintf(" -s %s", space)
	}

	f.WriteCmdSilent(fmt.Sprintf(loginCmd, cf.Target, cf.Username, cf.Password))

	// push app
	pushCmd := "cf push %s"
	f.WriteCmd(fmt.Sprintf(pushCmd, cf.App))
}

func (n *Nodejitsu) Write(f *buildfile.Buildfile) {
	if len(n.Token) == 0 || len(n.User) == 0 {
		return
	}

	f.WriteEnv("username", n.User)
	f.WriteEnv("apiToken", n.Token)

	// Install the jitsu command line interface then
	// deploy the configured app.
	f.WriteCmdSilent("[ -f /usr/bin/sudo ] || npm install -g jitsu")
	f.WriteCmdSilent("[ -f /usr/bin/sudo ] && sudo npm install -g jitsu")
	f.WriteCmd("jitsu deploy")
}

func (p *PyPI) Write(f *buildfile.Buildfile) {
	var indexServer string
	var repository string

	if len(p.Username) == 0 || len(p.Password) == 0 {
		// nothing to do if the config is fundamentally flawed
		return
	}

	// Handle the setting a custom pypi server/repository
	if len(p.Repository) == 0 {
		indexServer = "pypi"
		repository = ""
	} else {
		indexServer = "custom"
		repository = fmt.Sprintf("repository:%s", p.Repository)
	}

	f.WriteCmdSilent("echo 'publishing to PyPI...'")

	// find the setup.py file
	f.WriteCmdSilent("_PYPI_SETUP_PY=$(find . -name 'setup.py')")

	// build the .pypirc file that pypi expects
	f.WriteCmdSilent(fmt.Sprintf(pypirc, indexServer, indexServer, p.Username, p.Password, repository))
	formatStr := p.BuildFormatStr()

	// if we found the setup.py file use it to deploy
	f.WriteCmdSilent(fmt.Sprintf(deployCmd, formatStr, indexServer))
}

// WriteBuild adds only the build steps to the build script,
// omitting publish and deploy steps. This is important for
// pull requests, where deployment would be undesirable.
func (b *Build) WriteBuild(f *buildfile.Buildfile) {
	// append environment variables
	for _, env := range b.Env {
		parts := strings.SplitN(env, "=", 2)
		if len(parts) != 2 {
			continue
		}
		f.WriteEnv(parts[0], parts[1])
	}

	// append build commands
	for _, cmd := range b.Script {
		f.WriteCmd(cmd)
	}
}

func (d *Dropbox) Write(f *buildfile.Buildfile) {

	if len(d.AccessToken) == 0 || len(d.Source) == 0 || len(d.Target) == 0 {
		return
	}
	if strings.HasPrefix(d.Target, "/") {
		d.Target = d.Target[1:]
	}

	f.WriteCmdSilent("echo 'publishing to Dropbox ...'")

	cmd := "curl --upload-file %s -H \"Authorization: Bearer %s\" \"https://api-content.dropbox.com/1/files_put/auto/%s?overwrite=true\""
	f.WriteCmd(fmt.Sprintf(cmd, d.Source, d.AccessToken, d.Target))

}

// Write adds all the steps to the build script, including
// build commands, deploy and publish commands.
func (b *Build) Write(f *buildfile.Buildfile, r *repo.Repo) {
	// append build commands
	b.WriteBuild(f)

	// write publish commands
	if b.Publish != nil {
		b.Publish.Write(f, r)
	}

	// write deployment commands
	if b.Deploy != nil {
		b.Deploy.Write(f, r)
	}

	// write exit value
	f.WriteCmd("exit 0")
}

func Test_Modulus(t *testing.T) {

	g := goblin.Goblin(t)
	g.Describe("Modulus Deploy", func() {

		g.It("Requires a Project name", func() {
			b := new(buildfile.Buildfile)
			m := Modulus{
				Project: "foo",
			}

			m.Write(b)
			g.Assert(b.String()).Equal("")
		})

		g.It("Requires a Token", func() {
			b := new(buildfile.Buildfile)
			m := Modulus{
				Token: "bar",
			}

			m.Write(b)
			g.Assert(b.String()).Equal("")
		})

		g.It("Should execute deploy commands", func() {
			b := new(buildfile.Buildfile)
			m := Modulus{
				Project: "foo",
				Token:   "bar",
			}

			m.Write(b)
			g.Assert(b.String()).Equal(`export MODULUS_TOKEN="bar"
[ -f /usr/bin/npm ] || echo ERROR: npm is required for modulus.io deployments
[ -f /usr/bin/npm ] || exit 1
[ -f /usr/bin/sudo ] || npm install -g modulus
[ -f /usr/bin/sudo ] && sudo npm install -g modulus
echo '#DRONE:6d6f64756c7573206465706c6f79202d702022666f6f22'
modulus deploy -p "foo"
`)
		})
	})
}

func Test_Modulus(t *testing.T) {

	g := goblin.Goblin(t)
	g.Describe("Nodejitsu Deploy", func() {

		g.It("Requires a User", func() {
			b := new(buildfile.Buildfile)
			n := Nodejitsu{
				User: "foo",
			}

			n.Write(b)
			g.Assert(b.String()).Equal("")
		})

		g.It("Requires a Token", func() {
			b := new(buildfile.Buildfile)
			n := Nodejitsu{
				Token: "bar",
			}

			n.Write(b)
			g.Assert(b.String()).Equal("")
		})

		g.It("Should execute deploy commands", func() {
			b := new(buildfile.Buildfile)
			n := Nodejitsu{
				User:  "foo",
				Token: "bar",
			}

			n.Write(b)
			g.Assert(b.String()).Equal(`export username="foo"
export apiToken="bar"
[ -f /usr/bin/sudo ] || npm install -g jitsu
[ -f /usr/bin/sudo ] && sudo npm install -g jitsu
echo '#DRONE:6a69747375206465706c6f79'
jitsu deploy
`)
		})
	})
}

func (n *NPM) Write(f *buildfile.Buildfile) {
	// If the yaml doesn't provide a username or password
	// we should attempt to use the global defaults.
	if len(n.Email) == 0 ||
		len(n.Username) == 0 ||
		len(n.Password) == 0 {
		n.Username = *DefaultUser
		n.Password = *DefaultPass
		n.Email = *DefaultEmail
	}

	// If the yaml doesn't provide a username or password,
	// and there was not global configuration defined, EXIT.
	if len(n.Email) == 0 ||
		len(n.Username) == 0 ||
		len(n.Password) == 0 {
		return
	}

	// Setup the npm credentials
	f.WriteCmdSilent(fmt.Sprintf(CmdLogin, n.Username, n.Password, n.Email))

	// Setup custom npm registry
	if len(n.Registry) != 0 {
		f.WriteCmd(fmt.Sprintf(CmdSetRegistry, n.Registry))
	}

	// Set npm to always authenticate
	if n.AlwaysAuth {
		f.WriteCmd(CmdAlwaysAuth)
	}

	if len(n.Folder) == 0 {
		n.Folder = "."
	}

	f.WriteString(fmt.Sprintf(CmdPublish, n.Folder, n.Tag, n.Folder))
}

// Write down the buildfile
func (s *SSH) Write(f *buildfile.Buildfile) {
	host := strings.SplitN(s.Target, " ", 2)
	if len(host) == 1 {
		host = append(host, "22")
	}
	if _, err := strconv.Atoi(host[1]); err != nil {
		host[1] = "22"
	}

	// Is artifact created?
	artifact := false

	for _, a := range s.Artifacts {
		if a == "GITARCHIVE" {
			artifact = createGitArchive(f)
			break
		}
	}

	if !artifact {
		if len(s.Artifacts) > 1 {
			artifact = compress(f, s.Artifacts)
		} else if len(s.Artifacts) == 1 {
			f.WriteEnv("ARTIFACT", s.Artifacts[0])
			artifact = true
		}
	}

	if artifact {
		scpCmd := "scp -o StrictHostKeyChecking=no -P %s -r ${ARTIFACT} %s"
		f.WriteCmd(fmt.Sprintf(scpCmd, host[1], host[0]))
	}

	if len(s.Cmd) > 0 {
		sshCmd := "ssh -o StrictHostKeyChecking=no -p %s %s %q"
		f.WriteCmd(fmt.Sprintf(sshCmd, host[1], strings.SplitN(host[0], ":", 2)[0], s.Cmd))
	}
}

func (h *Heroku) Write(f *buildfile.Buildfile) {
	f.WriteCmdSilent(CmdRevParse)
	f.WriteCmdSilent(CmdGlobalUser)
	f.WriteCmdSilent(CmdGlobalEmail)
	f.WriteCmdSilent(fmt.Sprintf(CmdLogin, h.Token))

	// add heroku as a git remote
	f.WriteCmd(fmt.Sprintf("git remote add heroku https://git.heroku.com/%s.git", h.App))

	switch h.Force {
	case true:
		// this is useful when the there are artifacts generated
		// by the build script, such as less files converted to css,
		// that need to be deployed to Heroku.
		f.WriteCmd(fmt.Sprintf("git add -A"))
		f.WriteCmd(fmt.Sprintf("git commit -m 'adding build artifacts'"))
		f.WriteCmd(fmt.Sprintf("git push heroku HEAD:refs/heads/master --force"))
	case false:
		// otherwise we just do a standard git push
		f.WriteCmd(fmt.Sprintf("git push heroku $COMMIT:refs/heads/master"))
	}
}

func Test_NPM(t *testing.T) {

	g := goblin.Goblin(t)
	g.Describe("NPM Publish", func() {

		g.BeforeEach(func() {
			var user, pass, email = "", "", ""
			DefaultEmail = &user
			DefaultUser = &pass
			DefaultPass = &email
		})

		g.It("Should run publish", func() {
			b := new(buildfile.Buildfile)
			n := NPM{
				Email:    "[email protected]",
				Username: "foo",
				Password: "bar",
				Folder:   "/path/to/repo",
			}

			n.Write(b)
			out := b.String()
			g.Assert(strings.Contains(out, "npm publish /path/to/repo\n")).Equal(true)
			g.Assert(strings.Contains(out, "\nnpm set")).Equal(false)
			g.Assert(strings.Contains(out, "\nnpm config set")).Equal(false)
		})

		g.It("Should use current directory if folder is empty", func() {
			b := new(buildfile.Buildfile)
			n := NPM{
				Email:    "[email protected]",
				Username: "foo",
				Password: "bar",
			}

			n.Write(b)
			g.Assert(strings.Contains(b.String(), "npm publish .\n")).Equal(true)
		})

		g.It("Should set tag", func() {
			b := new(buildfile.Buildfile)
			n := NPM{
				Email:    "[email protected]",
				Username: "foo",
				Password: "bar",
				Folder:   "/path/to/repo",
				Tag:      "1.0.0",
			}

			n.Write(b)
			g.Assert(strings.Contains(b.String(), "\n_NPM_PACKAGE_TAG=\"1.0.0\"\n")).Equal(true)
			g.Assert(strings.Contains(b.String(), "npm tag ${_NPM_PACKAGE_NAME} ${_NPM_PACKAGE_TAG}\n")).Equal(true)
		})

		g.It("Should set registry", func() {
			b := new(buildfile.Buildfile)
			n := NPM{
				Email:    "[email protected]",
				Username: "foo",
				Password: "bar",
				Folder:   "/path/to/repo",
				Registry: "https://npmjs.com",
			}

			n.Write(b)
			g.Assert(strings.Contains(b.String(), "\nnpm config set registry https://npmjs.com\n")).Equal(true)
		})

		g.It("Should set always-auth", func() {
			b := new(buildfile.Buildfile)
			n := NPM{
				Email:      "[email protected]",
				Username:   "foo",
				Password:   "bar",
				Folder:     "/path/to/repo",
				AlwaysAuth: true,
			}

			n.Write(b)
			g.Assert(strings.Contains(b.String(), CmdAlwaysAuth)).Equal(true)
		})

		g.It("Should skip when no username or password", func() {
			b := new(buildfile.Buildfile)
			n := new(NPM)

			n.Write(b)
			g.Assert(b.String()).Equal("")
		})

		g.It("Should use default username or password", func() {
			b := new(buildfile.Buildfile)
			n := new(NPM)

			expected := `cat <<EOF > ~/.npmrc
_auth = $(echo "foo:bar" | tr -d "\r\n" | base64)
email = [email protected]
EOF`

//.........这里部分代码省略.........

func (a *Azure) Write(f *buildfile.Buildfile) {
	if len(a.StorageAccount) == 0 || len(a.StorageAccessKey) == 0 || len(a.StorageContainer) == 0 || len(a.Source) == 0 {
		return
	}

	f.WriteCmdSilent("echo 'publishing to Azure Storage ...'")

	// install Azure xplat CLI
	f.WriteCmdSilent("[ -f /usr/bin/sudo ] || npm install -g azure-cli 1> /dev/null 2> /dev/null")
	f.WriteCmdSilent("[ -f /usr/bin/sudo ] && sudo npm install -g azure-cli 1> /dev/null 2> /dev/null")

	f.WriteEnv("AZURE_STORAGE_ACCOUNT", a.StorageAccount)
	f.WriteEnv("AZURE_STORAGE_ACCESS_KEY", a.StorageAccessKey)

	// if target isn't specified, set to source
	if len(a.Target) == 0 {
		a.Target = a.Source
	}

	f.WriteCmd(fmt.Sprintf(`azure storage blob upload --container %s %s %s`, a.StorageContainer, a.Source, a.Target))
}

func (s *Swift) Write(f *buildfile.Buildfile) {
	var target string
	// All options are required, so ensure they are present
	if len(s.Username) == 0 || len(s.Password) == 0 || len(s.AuthURL) == 0 || len(s.Region) == 0 || len(s.Source) == 0 || len(s.Container) == 0 {
		f.WriteCmdSilent(`echo "Swift: Missing argument(s)"`)
		return
	}

	// If a target was provided, prefix it with a /
	if len(s.Target) > 0 {
		target = fmt.Sprintf("/%s", strings.TrimPrefix(s.Target, "/"))
	}

	// debugging purposes so we can see if / where something is failing
	f.WriteCmdSilent(`echo "Swift: Publishing..."`)

	// install swiftly using PIP
	f.WriteCmdSilent("[ -f /usr/bin/sudo ] || pip install swiftly 1> /dev/null 2> /dev/null")
	f.WriteCmdSilent("[ -f /usr/bin/sudo ] && sudo pip install swiftly 1> /dev/null 2> /dev/null")

	// Write out environment variables
	f.WriteEnv("SWIFTLY_AUTH_URL", s.AuthURL)
	f.WriteEnv("SWIFTLY_AUTH_USER", s.Username)
	f.WriteEnv("SWIFTLY_AUTH_KEY", s.Password)
	f.WriteEnv("SWIFTLY_REGION", s.Region)

	f.WriteCmd(fmt.Sprintf(`swiftly put -i %s %s%s`, s.Source, s.Container, target))
}

func Test_Git(t *testing.T) {

	g := goblin.Goblin(t)
	g.Describe("Git Deploy", func() {

		g.It("Should set git.config", func() {
			b := new(buildfile.Buildfile)
			d := Git{
				Target: "git://foo.com/bar/baz.git",
			}

			d.Write(b)
			out := b.String()
			g.Assert(strings.Contains(out, CmdRevParse)).Equal(true)
			g.Assert(strings.Contains(out, CmdGlobalUser)).Equal(true)
			g.Assert(strings.Contains(out, CmdGlobalEmail)).Equal(true)
		})

		g.It("Should add remote", func() {
			b := new(buildfile.Buildfile)
			d := Git{
				Target: "git://foo.com/bar/baz.git",
			}

			d.Write(b)
			out := b.String()
			g.Assert(strings.Contains(out, "\ngit remote add deploy git://foo.com/bar/baz.git\n")).Equal(true)
		})

		g.It("Should push to remote", func() {
			b := new(buildfile.Buildfile)
			d := Git{
				Target: "git://foo.com/bar/baz.git",
			}

			d.Write(b)
			out := b.String()
			g.Assert(strings.Contains(out, "\ngit push deploy $COMMIT:master\n")).Equal(true)
		})

		g.It("Should push to alternate branch", func() {
			b := new(buildfile.Buildfile)
			d := Git{
				Branch: "foo",
				Target: "git://foo.com/bar/baz.git",
			}

			d.Write(b)
			out := b.String()
			g.Assert(strings.Contains(out, "\ngit push deploy $COMMIT:foo\n")).Equal(true)
		})

		g.It("Should force push to remote", func() {
			b := new(buildfile.Buildfile)
			d := Git{
				Force:  true,
				Target: "git://foo.com/bar/baz.git",
			}

			d.Write(b)
			out := b.String()
			g.Assert(strings.Contains(out, "\ngit add -A\n")).Equal(true)
			g.Assert(strings.Contains(out, "\ngit commit -m 'add build artifacts'\n")).Equal(true)
			g.Assert(strings.Contains(out, "\ngit push deploy HEAD:master --force\n")).Equal(true)
		})

	})
}

// Write adds commands to the buildfile to do the following:
// 1. Install the docker client in the Drone container if required.
// 2. Build a docker image based on the dockerfile defined in the config.
// 3. Push that docker image to index.docker.io.
// 4. Delete the docker image on the server it was build on so we conserve disk space.
func (d *Docker) Write(f *buildfile.Buildfile) {
	if len(d.DockerHost) == 0 || len(d.ImageName) == 0 {
		f.WriteCmdSilent(`echo -e "Docker Plugin: Missing argument(s)\n\n"`)
		if len(d.DockerHost) == 0 {
			f.WriteCmdSilent(`echo -e "\tdocker_host not defined in yaml"`)
		}
		if len(d.ImageName) == 0 {
			f.WriteCmdSilent(`echo -e "\timage_name not defined in yaml"`)
		}
		return
	}

	// If docker version is unspecified, download and install the latest client
	if len(d.DockerVersion) == 0 {
		d.DockerVersion = "latest"
	}

	if len(d.DockerVersion) > 0 {
		// Download docker binary and install it as /usr/local/bin/docker if it does not exist
		f.WriteCmd("type -p docker || wget -qO- https://get.docker.io/builds/Linux/x86_64/docker-" +
			d.DockerVersion + ".tgz |sudo tar zxf - -C /")
	}

	// Export docker host once
	f.WriteCmd("export DOCKER_HOST=" + d.DockerHost)

	// Login?
	if d.RegistryLogin == true {
		// If email is unspecified, pass in -e ' ' to avoid having
		// registry URL interpreted as email, which will fail cryptically.
		emailOpt := "' '"
		if d.Email != "" {
			emailOpt = d.Email
		}
		f.WriteCmdSilent(fmt.Sprintf("docker login -u %s -p %s -e %s %s",
			d.Username, d.Password, emailOpt, d.RegistryLoginUrl))
	}

	dockerPath := "."
	if len(d.Dockerfile) != 0 {
		dockerPath = fmt.Sprintf("- < %s", d.Dockerfile)
	}

	// Run the command commands to build and deploy the image.

	// Add the single tag if one exists
	if len(d.Tag) > 0 {
		d.Tags = append(d.Tags, d.Tag)
	}

	// If no tags are specified, use the commit hash
	if len(d.Tags) == 0 {
		d.Tags = append(d.Tags, "$(git rev-parse --short HEAD)")
	}

	// There is always at least 1 tag
	buildImageTag := d.Tags[0]

	// Build the image
	f.WriteCmd(fmt.Sprintf("docker build --pull -t %s:%s %s", d.ImageName, buildImageTag, dockerPath))

	// Tag and push all tags
	for _, tag := range d.Tags {
		if tag != buildImageTag {
			var options string
			if d.ForceTags {
				options = "-f"
			}
			f.WriteCmd(fmt.Sprintf("docker tag %s %s:%s %s:%s", options, d.ImageName, buildImageTag, d.ImageName, tag))
		}

		f.WriteCmd(fmt.Sprintf("docker push %s:%s", d.ImageName, tag))
	}

	// Remove tags after pushing unless keepBuild is set
	if !d.KeepBuild {
		for _, tag := range d.Tags {
			f.WriteCmd(fmt.Sprintf("docker rmi %s:%s", d.ImageName, tag))
		}
	}
}

func (g *Git) Write(f *buildfile.Buildfile) {
	f.WriteCmdSilent(CmdRevParse)
	f.WriteCmdSilent(CmdGlobalUser)
	f.WriteCmdSilent(CmdGlobalEmail)

	// add target as a git remote
	f.WriteCmd(fmt.Sprintf("git remote add deploy %s", g.Target))

	dest := g.Branch
	if len(dest) == 0 {
		dest = "master"
	}

	switch g.Force {
	case true:
		// this is useful when the there are artifacts generated
		// by the build script, such as less files converted to css,
		// that need to be deployed to git remote.
		f.WriteCmd(fmt.Sprintf("git add -A"))
		f.WriteCmd(fmt.Sprintf("git commit -m 'add build artifacts'"))
		f.WriteCmd(fmt.Sprintf("git push deploy HEAD:%s --force", dest))
	case false:
		// otherwise we just do a standard git push
		f.WriteCmd(fmt.Sprintf("git push deploy $COMMIT:%s", dest))
	}
}

func (p *Package) Write(username, api_key string, f *buildfile.Buildfile) {
	if len(p.File) == 0 || len(p.Owner) == 0 || len(p.Repository) == 0 || len(p.Package) == 0 || len(p.Version) == 0 || len(p.Target) == 0 {
		f.WriteCmdSilent(`echo -e "Bintray Plugin: Missing argument(s)\n\n"`)

		if len(p.Package) == 0 {
			f.WriteCmdSilent(fmt.Sprintf(`echo -e "\tpackage not defined in yaml config"`))
			return
		}

		if len(p.File) == 0 {
			f.WriteCmdSilent(fmt.Sprintf(`echo -e "\tpackage %s: file not defined in yaml config"`, p.Package))
		}

		if len(p.Owner) == 0 {
			f.WriteCmdSilent(fmt.Sprintf(`echo -e "\tpackage %s: owner not defined in yaml config"`, p.Package))
		}

		if len(p.Repository) == 0 {
			f.WriteCmdSilent(fmt.Sprintf(`echo -e "\tpackage %s: repository not defined in yaml config"`, p.Package))
		}

		if len(p.Version) == 0 {
			f.WriteCmdSilent(fmt.Sprintf(`echo -e "\tpackage %s: version not defined in yaml config"`, p.Package))
		}

		if len(p.Target) == 0 {
			f.WriteCmdSilent(fmt.Sprintf(`echo -e "\tpackage %s: target not defined in yaml config"`, p.Package))
		}

		f.WriteCmdSilent("exit 1")

		return
	}

	switch p.Type {
	case "deb":
		p.debUpload(username, api_key, f)
	case "rpm":
		p.upload(username, api_key, f)
	case "maven":
		p.upload(username, api_key, f)
	default:
		p.upload(username, api_key, f)
	}
}