feat: upgrade command

utils/constants.go

@@ -0,0 +1,6 @@
+package utils
+
+var (
+	Version          string
+	GithubReleaseUrl = "https://api.github.com/repos/CyberL1/holesail-proxy/releases/latest"
+)

utils/types.go

@@ -0,0 +1,12 @@
+package utils
+
+type GithubRelease struct {
+	TagName    string `json:"tag_name"`
+	Prerelease bool
+}
+
+type GithubFile struct {
+	Name        string `json:"name"`
+	Path        string `json:"path"`
+	DownloadUrl string `json:"download_url"`
+}

utils/version.go

@@ -0,0 +1,24 @@
+package utils
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+func GetLatestCliVersion() (*GithubRelease, error) {
+	resp, err := http.Get(GithubReleaseUrl)
+	if err != nil {
+		return nil, err
+	}
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	release := &GithubRelease{}
+	err = json.Unmarshal(body, release)
+	if err != nil {
+		return nil, err
+	}
+	return release, nil
+}