add cli version check before every command

cli/packages/util/check-for-update.go

@@ -0,0 +1,42 @@
+package util
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+func CheckForUpdate() {
+	latestVersion, err := getLatestTag("infisical", "infisical")
+	if err != nil {
+		// do nothing and continue
+		return
+	}
+	if latestVersion != CLI_VERSION {
+		PrintWarning(fmt.Sprintf("Please update your CLI. You are running version %s but the latest version is %s", CLI_VERSION, latestVersion))
+	}
+}
+
+func getLatestTag(repoOwner string, repoName string) (string, error) {
+	url := fmt.Sprintf("https://api.github.com/repos/%s/%s/tags", repoOwner, repoName)
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", err
+	}
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	var tags []struct {
+		Name string `json:"name"`
+	}
+
+	json.Unmarshal(body, &tags)
+
+	return tags[0].Name, nil
+}