deploys.go

package bitballoon

import (
	"crypto/sha1"
	"encoding/hex"
	"errors"
	"io/ioutil"
	"os"
	"path"
	"path/filepath"
	"strings"
	"time"
)

// Deploy represents a specific deploy of a site
type Deploy struct {
	Id     string `json:"id"`
	SiteId string `json:"site_id"`
	UserId string `json:"user_id"`

	// State of the deploy (uploading/uploaded/processing/ready/error)
	State string `json:"state"`

	// Cause of error if State is "error"
	ErrorMessage string `json:"error_message"`

	// Shas of files that needs to be uploaded before the deploy is ready
	Required []string `json:"required"`

	DeployUrl     string `json:"deploy_url"`
	ScreenshotUrl string `json:"screenshot_url"`

	CreatedAt Timestamp `json:"created_at"`
	UpdatedAt Timestamp `json:"updated_at"`

	client *Client
}

// DeploysService is used to access all Deploy related API methods
type DeploysService struct {
	site   *Site
	client *Client
}

type deployFiles struct {
	Files *map[string]string `json:"files"`
}

func (s *DeploysService) apiPath() string {
	if s.site != nil {
		return path.Join(s.site.apiPath(), "deploys")
	} else {
		return "/deploys"
	}
}

// Create a new deploy
//
// Example: site.Deploys.Create("/path/to/site-dir")
func (s *DeploysService) Create(dirOrZip string) (*Deploy, *Response, error) {
	if s.site == nil {
		return nil, nil, errors.New("You can only create a new deploy for an existing site (site.Deploys.Create(dirOrZip)))")
	}

	if strings.HasSuffix(dirOrZip, ".zip") {
		return s.deployZip(dirOrZip)
	} else {
		return s.deployDir(dirOrZip)
	}
}

// List all deploys. Takes ListOptions to control pagination.
func (s *DeploysService) List(options *ListOptions) ([]Deploy, *Response, error) {
	deploys := new([]Deploy)

	reqOptions := &RequestOptions{QueryParams: options.toQueryParamsMap()}

	resp, err := s.client.Request("GET", s.apiPath(), reqOptions, deploys)

	for _, deploy := range *deploys {
		deploy.client = s.client
	}

	return *deploys, resp, err
}

// Get a specific deploy.
func (d *DeploysService) Get(id string) (*Deploy, *Response, error) {
	deploy := &Deploy{Id: id, client: d.client}
	resp, err := deploy.Reload()

	return deploy, resp, err
}

func (deploy *Deploy) apiPath() string {
	return path.Join("/deploys", deploy.Id)
}

// Reload a deploy from the API
func (deploy *Deploy) Reload() (*Response, error) {
	if deploy.Id == "" {
		return nil, errors.New("Cannot fetch deploy without an ID")
	}
	return deploy.client.Request("GET", deploy.apiPath(), nil, deploy)
}

// Restore an old deploy. Sets the deploy as the active deploy for a site
func (deploy *Deploy) Restore() (*Response, error) {
	return deploy.client.Request("POST", path.Join(deploy.apiPath(), "restore"), nil, deploy)
}

func (s *DeploysService) deployDir(dir string) (*Deploy, *Response, error) {
	files := map[string]string{}

	err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
		if info.IsDir() == false {
			rel, err := filepath.Rel(dir, path)
			if err != nil {
				return err
			}

			if strings.HasPrefix(rel, ".") || strings.Contains(rel, "/.") {
				return nil
			}

			sha := sha1.New()
			data, err := ioutil.ReadFile(path)

			if err != nil {
				return err
			}

			sha.Write(data)

			files[rel] = hex.EncodeToString(sha.Sum(nil))
		}

		return nil
	})

	options := &RequestOptions{
		JsonBody: &deployFiles{
			Files: &files,
		},
	}

	deploy := &Deploy{client: s.client}
	resp, err := s.client.Request("POST", s.apiPath(), options, deploy)

	if err != nil {
		return deploy, resp, err
	}

	lookup := map[string]bool{}

	for _, sha := range deploy.Required {
		lookup[sha] = true
	}

	for path, sha := range files {
		if lookup[sha] == true {
			file, err := os.Open(filepath.Join(dir, path))
			defer file.Close()

			if err != nil {
				return deploy, nil, err
			}

			info, err := file.Stat()

			if err != nil {
				return deploy, nil, err
			}

			options = &RequestOptions{
				RawBody:       file,
				RawBodyLength: info.Size(),
				Headers:       &map[string]string{"Content-Type": "application/octet-stream"},
			}
			resp, err = s.client.Request("PUT", filepath.Join(deploy.apiPath(), "files", path), options, nil)
			if err != nil {
				return deploy, resp, err
			}
		}
	}

	return deploy, resp, err
}

func (s *DeploysService) deployZip(zip string) (*Deploy, *Response, error) {
	zipPath, err := filepath.Abs(zip)
	if err != nil {
		return nil, nil, err
	}

	zipFile, err := os.Open(zipPath)
	defer zipFile.Close()

	if err != nil {
		return nil, nil, err
	}

	info, err := zipFile.Stat()

	if err != nil {
		return nil, nil, err
	}

	options := &RequestOptions{
		RawBody:       zipFile,
		RawBodyLength: info.Size(),
		Headers:       &map[string]string{"Content-Type": "application/zip"},
	}

	deploy := &Deploy{client: s.client}
	resp, err := s.client.Request("POST", s.apiPath(), options, deploy)

	return deploy, resp, err
}

func (deploy *Deploy) WaitForReady(timeout time.Duration) error {
	if deploy.State == "ready" {
		return nil
	}

	if timeout == 0 {
		timeout = defaultTimeout
	}

	timedOut := false
	time.AfterFunc(timeout*time.Second, func() {
		timedOut = true
	})

	done := make(chan error)

	go func() {
		for {
			time.Sleep(1 * time.Second)

			if timedOut {
				done <- errors.New("Timeout while waiting for processing")
				break
			}

			_, err := deploy.Reload()
			if err != nil || (deploy.State == "ready") {
				done <- err
				break
			}
		}
	}()

	err := <-done
	return err
}