/
selfupdate.go
187 lines (160 loc) · 4.09 KB
/
selfupdate.go
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package cmd
import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"os/exec"
"path/filepath"
"runtime"
"github.com/charmbracelet/lipgloss"
"github.com/minepkg/minepkg/internals/commands"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var styleWarnBox = lipgloss.NewStyle().
Border(lipgloss.RoundedBorder()).
BorderForeground(lipgloss.Color("#b37400")).
Foreground(lipgloss.Color("orange")).
Padding(0, 1)
func init() {
runner := &selfupdateRunner{}
cmd := commands.New(&cobra.Command{
Use: "selfupdate",
Short: "Updates minepkg to the latest version",
Args: cobra.ExactArgs(0),
}, runner)
cmd.Flags().BoolVar(&runner.force, "force", false, "Force update")
rootCmd.AddCommand(cmd.Command)
rootCmd.AddCommand(selftestCmd)
}
type minepkgClientVersions struct {
Version string `json:"version"`
Channel string `json:"channel"`
Info string `json:"info"`
Binaries struct {
Win string `json:"win"`
MacOS string `json:"macos"`
Linux string `json:"linux"`
} `json:"binaries"`
}
func (m *minepkgClientVersions) PlatformBinary() string {
switch runtime.GOOS {
case "linux":
return m.Binaries.Linux
case "darwin": // macOS
return m.Binaries.MacOS
case "windows":
return m.Binaries.Win
default:
panic("No binary available for your platform")
}
}
type selfupdateRunner struct {
force bool
}
func (s *selfupdateRunner) RunE(cmd *cobra.Command, args []string) error {
toUpdate, err := os.Executable()
if err != nil {
return err
}
toUpdate, err = filepath.EvalSymlinks(toUpdate)
if err != nil {
return err
}
fmt.Println("Checking for new version")
parsed, err := s.fetchVersionInfo()
if err != nil {
return err
}
if parsed.Version == rootCmd.Version && !s.force {
fmt.Println("Already up to date! :)")
os.Exit(0)
}
if parsed.Info != "" {
fmt.Println(styleWarnBox.Render(parsed.Info))
}
cacheDir, err := os.UserCacheDir()
if err != nil {
return err
}
// TODO: if this version is newer
newCli, err := ioutil.TempFile(cacheDir, parsed.Version)
if err != nil {
return err
}
newCli.Chmod(0700)
download, err := http.Get(parsed.PlatformBinary())
if err != nil {
return err
}
_, err = io.Copy(newCli, download.Body)
if err != nil {
return err
}
newCli.Close()
fmt.Println("Testing new version")
test := exec.Command(newCli.Name(), "selftest")
out, err := test.Output()
if err != nil {
logger.Fail("Update aborted. Self test of new update failed:\n " + err.Error())
}
if string(out) != "Selftest OK\n" {
logger.Fail("Update aborted. Self test of new update failed:\nInvalid output. Please open a bug report")
}
if runtime.GOOS == "windows" {
if err := os.Rename(toUpdate, toUpdate+".old"); err != nil {
return err
}
}
if err := os.Rename(newCli.Name(), toUpdate); err != nil {
if runtime.GOOS == "windows" {
// revert to old version
if err := os.Rename(toUpdate+".old", toUpdate); err != nil {
panic("This is bad... You might have to install minepkg manually again. Sorry")
}
logger.Fail("Upgrade failed. Reverted to old version. Please open a bug report")
}
return err
}
fmt.Println("minepkg CLI was updated successfully")
return err
}
func (s *selfupdateRunner) fetchVersionInfo() (*minepkgClientVersions, error) {
updateChannel := viper.GetString("updateChannel")
pathPrefix := ""
switch updateChannel {
case "":
fallthrough
case "stable":
fmt.Println("Using stable update channel")
case "dev":
fmt.Println("Using dev update channel")
pathPrefix = "dev/"
default:
fmt.Printf("Unsupported update channel \"%s\". Falling back to stable\n", updateChannel)
}
res, err := http.Get(fmt.Sprintf("https://get.minepkg.io/%slatest-version.json", pathPrefix))
if err != nil {
return nil, err
}
buf, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, err
}
parsed := minepkgClientVersions{}
if err := json.Unmarshal(buf, &parsed); err != nil {
return nil, err
}
return &parsed, nil
}
var selftestCmd = &cobra.Command{
Use: "selftest",
Short: "checks if this binary works",
Hidden: true,
Run: func(cmd *cobra.Command, args []string) {
fmt.Println("Selftest OK")
},
}