import 'package:fluent_ui/fluent_ui.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:reboot_common/common.dart';
import 'package:reboot_launcher/src/dialog/abstract/info_bar.dart';

class UpdateController {
  late final GetStorage _storage;
  late final RxnInt timestamp;
  late final Rx<UpdateStatus> status;
  late final Rx<UpdateTimer> timer;
  late final TextEditingController url;

  UpdateController() {
    _storage = GetStorage("reboot_update");
    timestamp = RxnInt(_storage.read("ts"));
    timestamp.listen((value) => _storage.write("ts", value));
    var timerIndex = _storage.read("timer");
    timer = Rx(timerIndex == null ? UpdateTimer.never : UpdateTimer.values.elementAt(timerIndex));
    timer.listen((value) => _storage.write("timer", value.index));
    url = TextEditingController(text: _storage.read("update_url") ?? rebootDownloadUrl);
    url.addListener(() => _storage.write("update_url", url.text));
    status = Rx(UpdateStatus.waiting);
  }

  Future<void> update([bool force = false]) async {
    if(timer.value == UpdateTimer.never) {
      status.value = UpdateStatus.success;
      return;
    }

    showInfoBar(
        "Downloading reboot dll...",
        loading: true,
        duration: null
    );
    try {
      timestamp.value = await downloadRebootDll(
          url.text,
          timestamp.value,
          hours: timer.value.hours,
          force: force
      );
      status.value = UpdateStatus.success;
      showInfoBar(
          "The reboot dll was downloaded successfully",
          severity: InfoBarSeverity.success,
          duration: snackbarShortDuration
      );
    }catch(message) {
      var error = message.toString();
      error = error.contains(": ") ? error.substring(error.indexOf(": ") + 2) : error;
      error = error.toLowerCase();
      status.value = UpdateStatus.error;
      showInfoBar(
          "An error occurred while downloading the reboot dll: $error",
          duration: snackbarLongDuration,
          severity: InfoBarSeverity.error,
          action: Button(
            onPressed: () => update(true),
            child: const Text("Retry"),
          )
      );
    }
  }

  void reset() {
    timestamp.value = null;
    timer.value = UpdateTimer.never;
    url.text = rebootDownloadUrl;
    status.value = UpdateStatus.waiting;
    update();
  }
}

extension _UpdateTimerExtension on UpdateTimer {
  int get hours {
    switch(this) {
      case UpdateTimer.never:
        return -1;
      case UpdateTimer.hour:
        return 1;
      case UpdateTimer.day:
        return 24;
      case UpdateTimer.week:
        return 24 * 7;
    }
  }
}