import "package:smol_mail/smol/proto.dart";
import "package:smol_mail/smol/errors.dart";
import "package:smol_mail/smol/store.dart";

// Deploy-time configuration, empty by default (mirrors gsmol's config.js).
// A release may bake in a server key with:
//   flutter build apk --dart-define=SMOL_PRESET_SERVER=example.org \
//                      --dart-define=SMOL_PRESET_SERVER_KEY=base32key
// It only makes sense when whoever ships this app and whoever runs that
// smolmaild are the same trusted party: the value arrives with the app
// itself, which is the trusted channel SPEC.md §4 asks a pin to come from.
// This only seeds the first run — once written it is an ordinary pin,
// removable in settings like any other, and never overwrites a host the user
// (or a previous install) already pinned.
const _presetHost = String.fromEnvironment("SMOL_PRESET_SERVER");
const _presetKey = String.fromEnvironment("SMOL_PRESET_SERVER_KEY");

void applyPresetServer(SmolStore store) {
  if (_presetHost.isEmpty || _presetKey.isEmpty) return;
  if (store.serverPin(_presetHost) != null) return;
  try {
    store.pinServer(_presetHost, b32decode(_presetKey));
  } on SmolError {
    // malformed preset: leave unpinned rather than block boot
  }
}