final: refactor for removal of system package and reduction of interactions to state package

State query command has been moved to main where it belongs, "system" information are now fetched in app.New and stored in *App with accessors for relevant values. Exit (cleanup-related) functions are separated into its dedicated "final" package.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

internal/final/register.go

@@ -0,0 +1,48 @@
+package final
+
+import (
+	"git.ophivana.moe/cat/fortify/dbus"
+	"git.ophivana.moe/cat/fortify/internal/state"
+)
+
+var (
+	cleanupCandidate  []string
+	enablements       *state.Enablements
+	xcbActionComplete bool
+
+	dbusProxy *dbus.Proxy
+	dbusDone  *chan struct{}
+
+	statePath string
+)
+
+func RegisterRevertPath(p string) {
+	cleanupCandidate = append(cleanupCandidate, p)
+}
+
+func RegisterEnablement(e state.Enablements) {
+	if enablements != nil {
+		panic("enablement state set twice")
+	}
+	enablements = &e
+}
+
+func XcbActionComplete() {
+	if xcbActionComplete {
+		Fatal("xcb inserted twice")
+	}
+	xcbActionComplete = true
+}
+
+func RegisterDBus(p *dbus.Proxy, done *chan struct{}) {
+	dbusProxy = p
+	dbusDone = done
+}
+
+func RegisterStatePath(v string) {
+	if statePath != "" {
+		panic("statePath set twice")
+	}
+
+	statePath = v
+}