first

go.mod

@@ -0,0 +1,8 @@
+module koa-init
+
+go 1.13
+
+require (
+	git.trj.tw/golang/utils v0.0.0-20190225142552-b019626f0349
+	github.com/sirupsen/logrus v1.4.2
+)

go.sum

@@ -0,0 +1,14 @@
+git.trj.tw/golang/utils v0.0.0-20190225142552-b019626f0349 h1:V6ifeiJ3ExnjaUylTOz37n6z5uLwm6fjKjnztbTCaQI=
+git.trj.tw/golang/utils v0.0.0-20190225142552-b019626f0349/go.mod h1:yE+qbsUsijCTdwsaQRkPT1CXYk7ftMzXsCaaYx/0QI0=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
+github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
+github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

main.go

@@ -0,0 +1,244 @@
+package main
+
+import (
+	"archive/tar"
+	"compress/gzip"
+	"encoding/json"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"strings"
+
+	"git.trj.tw/golang/utils"
+	"github.com/sirupsen/logrus"
+)
+
+var version string
+var workdir string
+var downloadDir = os.TempDir()
+var fileName = "koatmpl.tar"
+
+func init() {
+	flag.StringVar(&version, "version", "", "template version")
+	flag.StringVar(&workdir, "wd", "", "working directory")
+	flag.Parse()
+}
+
+const apiHost = "https://git.trj.tw"
+const apiPath = "/api/v1/repos/nodejs/koa-template/tags"
+
+type Commit struct {
+	URL string `json:"url"`
+	SHA string `json:"sha"`
+}
+type Tag struct {
+	Name       string `json:"name"`
+	ID         string `json:"id"`
+	Commit     Commit `json:"commit"`
+	ZipballURL string `json:"zipball_url"`
+	TarballURL string `json:"tarball_url"`
+}
+
+func main() {
+	args := flag.Args()
+
+	if len(workdir) > 0 {
+		workdir = utils.ParsePath(workdir)
+		if !utils.IsDir(workdir) {
+			log.Fatalf("target directory not exists")
+		}
+	}
+
+	if len(args) == 0 {
+		// download
+		err := downloadTarball()
+		if err != nil {
+			log.Fatal(err)
+		}
+		err = extractTarball()
+		if err != nil {
+			log.Fatal(err)
+		}
+		fmt.Println("Success")
+		return
+	}
+
+	switch strings.ToLower(args[0]) {
+	case "list":
+		list, err := getTagList()
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Println(list)
+		break
+	default:
+		log.Fatalf("argv not match")
+	}
+
+}
+
+func extractTarball() (err error) {
+	wd, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+	if len(workdir) > 0 {
+		wd = workdir
+	}
+
+	f, err := os.Open(path.Join(downloadDir, fileName))
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	gzf, err := gzip.NewReader(f)
+	if err != nil {
+		return err
+	}
+	defer gzf.Close()
+
+	reader := tar.NewReader(gzf)
+
+	for {
+		header, err := reader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			fmt.Println("err :::: ", err)
+			return err
+		}
+
+		name := header.Name
+
+		switch header.Typeflag {
+		case tar.TypeDir:
+			fmt.Println("Directory: ", name)
+			err = os.Mkdir(path.Join(wd, name), 0775)
+			if err != nil {
+				return err
+			}
+			break
+		case tar.TypeReg:
+			fmt.Println("Regular FIle: ", name)
+			data := make([]byte, header.Size)
+			_, err = reader.Read(data)
+			if err != nil {
+				return err
+			}
+			err = ioutil.WriteFile(path.Join(wd, name), data, 664)
+			if err != nil {
+				return err
+			}
+			break
+		default:
+			fmt.Printf("%s : %c %s %s\n", "Unable to figure out type", header.Typeflag, "in file", name)
+		}
+	}
+
+	return
+}
+
+func downloadTarball() (err error) {
+	latest := true
+	if len(version) > 0 {
+		latest = false
+	}
+
+	tags, err := getList()
+	if err != nil {
+		return
+	}
+	if len(tags) == 0 {
+		return errors.New("no release tag")
+	}
+
+	link := ""
+	if latest == false {
+		for _, v := range tags {
+			if v.Name == version {
+				link = v.TarballURL
+			}
+		}
+		if len(link) == 0 {
+			return errors.New("version not match")
+		}
+	} else {
+		link = tags[0].TarballURL
+	}
+
+	resp, err := http.DefaultClient.Get(link)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	f, err := os.Create(path.Join(downloadDir, fileName))
+	if err != nil {
+		return
+	}
+
+	_, err = io.Copy(f, resp.Body)
+	if err != nil {
+		return
+	}
+
+	return
+}
+
+func getList() (tags []Tag, err error) {
+	u, err := url.Parse(apiHost)
+	if err != nil {
+		return
+	}
+	u, err = u.Parse(apiPath)
+	if err != nil {
+		return
+	}
+
+	req, err := http.NewRequest("GET", u.String(), nil)
+	if err != nil {
+		return
+	}
+
+	logrus.Debugf("Try send request to api: %s\n", u.String())
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	body := make([]Tag, 0)
+
+	b, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return
+	}
+	fmt.Println(string(b))
+
+	err = json.Unmarshal(b, &body)
+	if err != nil {
+		return
+	}
+	return body, nil
+}
+
+func getTagList() (tags []string, err error) {
+	body, err := getList()
+
+	tags = make([]string, 0, len(body))
+	for _, v := range body {
+		tags = append(tags, v.Name)
+	}
+
+	return
+}