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|
package updates
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"os"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/kardianos/osext"
getter "github.com/jesseduffield/go-getter"
"github.com/jesseduffield/lazygit/pkg/commands"
"github.com/jesseduffield/lazygit/pkg/config"
"github.com/jesseduffield/lazygit/pkg/i18n"
"github.com/sirupsen/logrus"
)
// Updater checks for updates and does updates
type Updater struct {
Log *logrus.Entry
Config config.AppConfigurer
OSCommand *commands.OSCommand
Tr *i18n.Localizer
}
// Updaterer implements the check and update methods
type Updaterer interface {
CheckForNewUpdate()
Update()
}
var (
projectUrl = "https://github.com/jesseduffield/lazygit"
)
// NewUpdater creates a new updater
func NewUpdater(log *logrus.Entry, config config.AppConfigurer, osCommand *commands.OSCommand, tr *i18n.Localizer) (*Updater, error) {
contextLogger := log.WithField("context", "updates")
updater := &Updater{
Log: contextLogger,
Config: config,
OSCommand: osCommand,
Tr: tr,
}
return updater, nil
}
func (u *Updater) getLatestVersionNumber() (string, error) {
req, err := http.NewRequest("GET", projectUrl+"/releases/latest", nil)
if err != nil {
return "", err
}
req.Header.Set("Accept", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return "", err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return "", err
}
byt := []byte(body)
var dat map[string]interface{}
if err := json.Unmarshal(byt, &dat); err != nil {
return "", err
}
return dat["tag_name"].(string), nil
}
// RecordLastUpdateCheck records last time an update check was performed
func (u *Updater) RecordLastUpdateCheck() error {
u.Config.GetAppState().LastUpdateCheck = time.Now().Unix()
return u.Config.SaveAppState()
}
// expecting version to be of the form `v12.34.56`
func (u *Updater) majorVersionDiffers(oldVersion, newVersion string) bool {
if oldVersion == "unversioned" {
return false
}
oldVersion = strings.TrimPrefix(oldVersion, "v")
newVersion = strings.TrimPrefix(newVersion, "v")
return strings.Split(oldVersion, ".")[0] != strings.Split(newVersion, ".")[0]
}
func (u *Updater) checkForNewUpdate() (string, error) {
u.Log.Info("Checking for an updated version")
currentVersion := u.Config.GetVersion()
if err := u.RecordLastUpdateCheck(); err != nil {
return "", err
}
newVersion, err := u.getLatestVersionNumber()
if err != nil {
return "", err
}
u.Log.Info("Current version is " + currentVersion)
u.Log.Info("New version is " + newVersion)
if newVersion == currentVersion {
return "", errors.New(u.Tr.SLocalize("OnLatestVersionErr"))
}
if u.majorVersionDiffers(currentVersion, newVersion) {
errMessage := u.Tr.TemplateLocalize(
"MajorVersionErr",
i18n.Teml{
"newVersion": newVersion,
"currentVersion": currentVersion,
},
)
return "", errors.New(errMessage)
}
rawUrl, err := u.getBinaryUrl(newVersion)
if err != nil {
return "", err
}
u.Log.Info("Checking for resource at url " + rawUrl)
if !u.verifyResourceFound(rawUrl) {
errMessage := u.Tr.TemplateLocalize(
"CouldNotFindBinaryErr",
i18n.Teml{
"url": rawUrl,
},
)
return "", errors.New(errMessage)
}
u.Log.Info("Verified resource is available, ready to update")
return newVersion, nil
}
// CheckForNewUpdate checks if there is an available update
func (u *Updater) CheckForNewUpdate(onFinish func(string, error) error, userRequested bool) {
if !userRequested && u.skipUpdateCheck() {
return
}
go func() {
newVersion, err := u.checkForNewUpdate()
if err = onFinish(newVersion, err); err != nil {
u.Log.Error(err)
}
}()
}
func (u *Updater) skipUpdateCheck() bool {
// will remove the check for windows after adding a manifest file asking for
// the required permissions
if runtime.GOOS == "windows" {
u.Log.Info("Updating is currently not supported for windows until we can fix permission issues")
return true
}
if u.Config.GetVersion() == "unversioned" {
u.Log.Info("Current version is not built from an official release so we won't check for an update")
return true
}
if u.Config.GetBuildSource() != "buildBinary" {
u.Log.Info("Binary is not built with the buildBinary flag so we won't check for an update")
return true
}
userConfig := u.Config.GetUserConfig()
if userConfig.Get("update.method") == "never" {
u.Log.Info("Update method is set to never so we won't check for an update")
return true
}
currentTimestamp := time.Now().Unix()
lastUpdateCheck := u.Config.GetAppState().LastUpdateCheck
days := userConfig.GetInt64("update.days")
if (currentTimestamp-lastUpdateCheck)/(60*60*24) < days {
u.Log.Info("Last update was too recent so we won't check for an update")
return true
}
return false
}
func (u *Updater) mappedOs(os string) string {
osMap := map[string]string{
"darwin": "Darwin",
"linux": "Linux",
"windows": "Windows",
}
result, found := osMap[os]
if found {
return result
}
return os
}
func (u *Updater) mappedArch(arch string) string {
archMap := map[string]string{
"386": "32-bit",
"amd64": "x86_64",
}
result, found := archMap[arch]
if found {
return result
}
return arch
}
// example: https://github.com/jesseduffield/lazygit/releases/download/v0.1.73/lazygit_0.1.73_Darwin_x86_64.tar.gz
func (u *Updater) getBinaryUrl(newVersion string) (string, error) {
extension := "tar.gz"
if runtime.GOOS == "windows" {
extension = "zip"
}
url := fmt.Sprintf(
"%s/releases/download/%s/lazygit_%s_%s_%s.%s",
projectUrl,
newVersion,
newVersion[1:],
u.mappedOs(runtime
|