mirror of
https://github.com/jesseduffield/lazygit.git
synced 2024-12-12 11:15:00 +02:00
320 lines
7.5 KiB
Go
320 lines
7.5 KiB
Go
package updates
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"time"
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"github.com/go-errors/errors"
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"github.com/kardianos/osext"
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"github.com/jesseduffield/lazygit/pkg/commands/oscommands"
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"github.com/jesseduffield/lazygit/pkg/config"
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"github.com/jesseduffield/lazygit/pkg/i18n"
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"github.com/sirupsen/logrus"
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)
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// Updater checks for updates and does updates
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type Updater struct {
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Log *logrus.Entry
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Config config.AppConfigurer
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OSCommand *oscommands.OSCommand
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Tr *i18n.Localizer
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}
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// Updaterer implements the check and update methods
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type Updaterer interface {
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CheckForNewUpdate()
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Update()
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}
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const (
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PROJECT_URL = "https://github.com/jesseduffield/lazygit"
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)
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// NewUpdater creates a new updater
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func NewUpdater(log *logrus.Entry, config config.AppConfigurer, osCommand *oscommands.OSCommand, tr *i18n.Localizer) (*Updater, error) {
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contextLogger := log.WithField("context", "updates")
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return &Updater{
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Log: contextLogger,
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Config: config,
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OSCommand: osCommand,
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Tr: tr,
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}, nil
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}
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func (u *Updater) getLatestVersionNumber() (string, error) {
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req, err := http.NewRequest("GET", PROJECT_URL+"/releases/latest", nil)
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if err != nil {
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return "", err
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}
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req.Header.Set("Accept", "application/json")
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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dec := json.NewDecoder(resp.Body)
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data := struct {
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TagName string `json:"tag_name"`
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}{}
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if err := dec.Decode(&data); err != nil {
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return "", err
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}
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return data.TagName, nil
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}
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// RecordLastUpdateCheck records last time an update check was performed
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func (u *Updater) RecordLastUpdateCheck() error {
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u.Config.GetAppState().LastUpdateCheck = time.Now().Unix()
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return u.Config.SaveAppState()
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}
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// expecting version to be of the form `v12.34.56`
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func (u *Updater) majorVersionDiffers(oldVersion, newVersion string) bool {
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if oldVersion == "unversioned" {
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return false
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}
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oldVersion = strings.TrimPrefix(oldVersion, "v")
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newVersion = strings.TrimPrefix(newVersion, "v")
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return strings.Split(oldVersion, ".")[0] != strings.Split(newVersion, ".")[0]
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}
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func (u *Updater) checkForNewUpdate() (string, error) {
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u.Log.Info("Checking for an updated version")
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currentVersion := u.Config.GetVersion()
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if err := u.RecordLastUpdateCheck(); err != nil {
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return "", err
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}
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newVersion, err := u.getLatestVersionNumber()
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if err != nil {
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return "", err
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}
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u.Log.Info("Current version is " + currentVersion)
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u.Log.Info("New version is " + newVersion)
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if newVersion == currentVersion {
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return "", errors.New(u.Tr.SLocalize("OnLatestVersionErr"))
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}
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if u.majorVersionDiffers(currentVersion, newVersion) {
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errMessage := u.Tr.TemplateLocalize(
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"MajorVersionErr",
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i18n.Teml{
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"newVersion": newVersion,
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"currentVersion": currentVersion,
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},
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)
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return "", errors.New(errMessage)
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}
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rawUrl, err := u.getBinaryUrl(newVersion)
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if err != nil {
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return "", err
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}
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u.Log.Info("Checking for resource at url " + rawUrl)
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if !u.verifyResourceFound(rawUrl) {
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errMessage := u.Tr.TemplateLocalize(
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"CouldNotFindBinaryErr",
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i18n.Teml{
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"url": rawUrl,
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},
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)
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return "", errors.New(errMessage)
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}
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u.Log.Info("Verified resource is available, ready to update")
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return newVersion, nil
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}
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// CheckForNewUpdate checks if there is an available update
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func (u *Updater) CheckForNewUpdate(onFinish func(string, error) error, userRequested bool) {
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if !userRequested && u.skipUpdateCheck() {
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return
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}
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go func() {
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newVersion, err := u.checkForNewUpdate()
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if err = onFinish(newVersion, err); err != nil {
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u.Log.Error(err)
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}
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}()
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}
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func (u *Updater) skipUpdateCheck() bool {
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// will remove the check for windows after adding a manifest file asking for
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// the required permissions
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if runtime.GOOS == "windows" {
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u.Log.Info("Updating is currently not supported for windows until we can fix permission issues")
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return true
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}
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if u.Config.GetVersion() == "unversioned" {
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u.Log.Info("Current version is not built from an official release so we won't check for an update")
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return true
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}
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if u.Config.GetBuildSource() != "buildBinary" {
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u.Log.Info("Binary is not built with the buildBinary flag so we won't check for an update")
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return true
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}
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userConfig := u.Config.GetUserConfig()
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if userConfig.Get("update.method") == "never" {
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u.Log.Info("Update method is set to never so we won't check for an update")
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return true
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}
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currentTimestamp := time.Now().Unix()
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lastUpdateCheck := u.Config.GetAppState().LastUpdateCheck
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days := userConfig.GetInt64("update.days")
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if (currentTimestamp-lastUpdateCheck)/(60*60*24) < days {
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u.Log.Info("Last update was too recent so we won't check for an update")
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return true
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}
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return false
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}
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func (u *Updater) mappedOs(os string) string {
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osMap := map[string]string{
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"darwin": "Darwin",
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"linux": "Linux",
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"windows": "Windows",
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}
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result, found := osMap[os]
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if found {
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return result
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}
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return os
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}
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func (u *Updater) mappedArch(arch string) string {
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archMap := map[string]string{
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"386": "32-bit",
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"amd64": "x86_64",
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}
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result, found := archMap[arch]
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if found {
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return result
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}
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return arch
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}
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// example: https://github.com/jesseduffield/lazygit/releases/download/v0.1.73/lazygit_0.1.73_Darwin_x86_64.tar.gz
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func (u *Updater) getBinaryUrl(newVersion string) (string, error) {
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extension := "tar.gz"
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if runtime.GOOS == "windows" {
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extension = "zip"
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}
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url := fmt.Sprintf(
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"%s/releases/download/%s/lazygit_%s_%s_%s.%s",
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PROJECT_URL,
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newVersion,
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newVersion[1:],
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u.mappedOs(runtime.GOOS),
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u.mappedArch(runtime.GOARCH),
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extension,
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)
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u.Log.Info("Url for latest release is " + url)
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return url, nil
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}
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// Update downloads the latest binary and replaces the current binary with it
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func (u *Updater) Update(newVersion string, onFinish func(error) error) {
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go func() {
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err := u.update(newVersion)
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if err = onFinish(err); err != nil {
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u.Log.Error(err)
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}
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}()
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}
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func (u *Updater) update(newVersion string) error {
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rawUrl, err := u.getBinaryUrl(newVersion)
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if err != nil {
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return err
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}
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u.Log.Info("Updating with url " + rawUrl)
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return u.downloadAndInstall(rawUrl)
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}
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func (u *Updater) downloadAndInstall(rawUrl string) error {
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configDir := u.Config.GetUserConfigDir()
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u.Log.Info("Download directory is " + configDir)
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tempPath := filepath.Join(configDir, "temp_lazygit")
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u.Log.Info("Temp path to binary is " + tempPath)
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// Create the file
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out, err := os.Create(tempPath)
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if err != nil {
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return err
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}
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defer out.Close()
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// Get the data
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resp, err := http.Get(rawUrl)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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// Check server response
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("error while trying to download latest lazygit: %s", resp.Status)
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}
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// Write the body to file
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_, err = io.Copy(out, resp.Body)
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if err != nil {
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return err
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}
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// get the path of the current binary
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binaryPath, err := osext.Executable()
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if err != nil {
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return err
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}
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u.Log.Info("Binary path is " + binaryPath)
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// Verify the main file exists
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if _, err := os.Stat(tempPath); err != nil {
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return err
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}
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// swap out the old binary for the new one
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err = os.Rename(tempPath, binaryPath)
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if err != nil {
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return err
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}
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u.Log.Info("Update complete!")
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return nil
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}
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func (u *Updater) verifyResourceFound(rawUrl string) bool {
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resp, err := http.Head(rawUrl)
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if err != nil {
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return false
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}
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defer resp.Body.Close()
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u.Log.Info("Received status code ", resp.StatusCode)
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// 403 means the resource is there (not going to bother adding extra request headers)
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// 404 means its not
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return resp.StatusCode == 403
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}
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