v0.2.2

standalone/update_checker.go

@@ -0,0 +1,127 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const remotePackageJSONURL = "https://gitea.hesukastro.com/hesukastro/vsix-hpl-toolbox/raw/branch/main/package.json"
+const updateRepositoryURL = "https://gitea.hesukastro.com/hesukastro/vsix-hpl-toolbox"
+
+type updateCheckResponse struct {
+	OK             bool   `json:"ok"`
+	Status         string `json:"status"`
+	CurrentVersion string `json:"currentVersion"`
+	RemoteVersion  string `json:"remoteVersion,omitempty"`
+	Message        string `json:"message"`
+	RepositoryURL  string `json:"repositoryUrl,omitempty"`
+}
+
+func UpdateCheckEndpoint(w http.ResponseWriter, r *http.Request) {
+	remoteVersion, err := fetchRemoteVersion()
+	if err != nil {
+		writeJSON(w, updateCheckResponse{
+			OK:             false,
+			Status:         "error",
+			CurrentVersion: AppVersion,
+			Message:        "HPL Toolbox update check failed: " + err.Error(),
+		})
+		return
+	}
+
+	comparison := compareVersions(remoteVersion, AppVersion)
+	if comparison > 0 {
+		writeJSON(w, updateCheckResponse{
+			OK:             true,
+			Status:         "update",
+			CurrentVersion: AppVersion,
+			RemoteVersion:  remoteVersion,
+			Message:        fmt.Sprintf("HPL Toolbox update available: %s (installed: %s).", remoteVersion, AppVersion),
+			RepositoryURL:  updateRepositoryURL,
+		})
+		return
+	}
+
+	writeJSON(w, updateCheckResponse{
+		OK:             true,
+		Status:         "current",
+		CurrentVersion: AppVersion,
+		RemoteVersion:  remoteVersion,
+		Message:        fmt.Sprintf("HPL Toolbox is up to date (%s).", AppVersion),
+	})
+}
+
+func fetchRemoteVersion() (string, error) {
+	client := http.Client{Timeout: 10 * time.Second}
+	req, err := http.NewRequest(http.MethodGet, remotePackageJSONURL, nil)
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("Accept", "application/json")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return "", fmt.Errorf("remote package.json returned HTTP %d", resp.StatusCode)
+	}
+
+	var packageJSON struct {
+		Version string `json:"version"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&packageJSON); err != nil {
+		return "", err
+	}
+	if strings.TrimSpace(packageJSON.Version) == "" {
+		return "", fmt.Errorf("remote package.json is missing a version")
+	}
+
+	return strings.TrimSpace(packageJSON.Version), nil
+}
+
+func compareVersions(left, right string) int {
+	leftParts := parseVersionParts(left)
+	rightParts := parseVersionParts(right)
+	length := len(leftParts)
+	if len(rightParts) > length {
+		length = len(rightParts)
+	}
+	for i := 0; i < length; i++ {
+		leftPart := 0
+		rightPart := 0
+		if i < len(leftParts) {
+			leftPart = leftParts[i]
+		}
+		if i < len(rightParts) {
+			rightPart = rightParts[i]
+		}
+		if leftPart > rightPart {
+			return 1
+		}
+		if leftPart < rightPart {
+			return -1
+		}
+	}
+	return 0
+}
+
+func parseVersionParts(version string) []int {
+	fields := strings.FieldsFunc(version, func(r rune) bool {
+		return r == '.' || r == '-'
+	})
+	parts := make([]int, 0, len(fields))
+	for _, field := range fields {
+		part, err := strconv.Atoi(field)
+		if err == nil {
+			parts = append(parts, part)
+		}
+	}
+	return parts
+}