volumen/internal/admin/settings_update.go

// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0

package admin

import (
	"net/http"
)

func (a *Admin) handleSettingsCheckUpdate(w http.ResponseWriter, r *http.Request) {
	if !a.requireCSRF(w, r) {
		return
	}
	if a.deps.CheckUpdate == nil {
		a.renderSettings(w, r, "", a.tr(r, "Update checks are not available in this build."), http.StatusOK)
		return
	}
	latest, err := a.deps.CheckUpdate()
	if err != nil {
		a.renderSettings(w, r, a.trf(r, "Update check failed: %s", err.Error()), "", http.StatusOK)
		return
	}
	// The hook returns "" when the running version is current, so the
	// comparison has already been made by the one implementation that
	// knows how to make it.
	if latest == "" {
		a.renderSettings(w, r, "",
			a.trf(r, "volumen %s is already the latest release.", a.deps.Version), http.StatusOK)
		return
	}
	a.renderSettings(w, r, "", a.trf(r, "volumen %s is available.", latest), http.StatusOK)
}

func (a *Admin) handleSettingsUpdate(w http.ResponseWriter, r *http.Request) {
	if !a.requireCSRF(w, r) {
		return
	}
	if a.deps.SelfUpdate == nil {
		a.renderSettings(w, r, a.tr(r, "Self-update is not available in this build."), "", http.StatusUnprocessableEntity)
		return
	}
	target, err := a.deps.SelfUpdate()
	if err != nil {
		message := a.trf(r, "The upgrade failed: %s", err.Error())
		if target != "" {
			message = a.trf2(r, "Upgrade to %s failed: %s", target, err.Error())
		}
		a.renderSettings(w, r, message, "", http.StatusInternalServerError)
		return
	}
	data := a.pageData(r)
	data.Target = target
	a.renderPage(w, r, "update.html", data, http.StatusOK)
}

// --- webhooks and tokens ----------------------------------------------------