import 'package:get/get.dart';
import '../../../data/services/usage_stats_service.dart';
import '../../../data/models/meeting_usage_stats.dart';
import '../../../core/utils/logger.dart';

class MeetingStatsController extends GetxController {
  final UsageStatsService _usageService = Get.find<UsageStatsService>();

  final isLoading = false.obs;
  final selectedTabIndex = 0.obs;
  final selectedTimeRange = 'today'.tr.obs; // 今日

  final Rx<MeetingAsrHistoryStats> todayStats = MeetingAsrHistoryStats(
    userId: '',
    allAsrCalls: 0,
    allAudioSeconds: 0,
    allAudioFileBytes: 0,
    allTranscriptBytes: 0,
  ).obs;
  final Rx<MeetingAsrHistoryStats> historyStats = MeetingAsrHistoryStats(
    userId: '',
    allAsrCalls: 0,
    allAudioSeconds: 0,
    allAudioFileBytes: 0,
    allTranscriptBytes: 0,
  ).obs;

  final RxList<MeetingAsrDailyStats> historyDaily =
      <MeetingAsrDailyStats>[].obs;

  final Rx<MeetingStorageHistoryStats> todayStorageStats =
      MeetingStorageHistoryStats(
    userId: '',
    allStorageUploads: 0,
    allStorageBytes: 0,
    allTransferBytes: 0,
  ).obs;

  final Rx<MeetingStorageHistoryStats> historyStorageStats =
      MeetingStorageHistoryStats(
    userId: '',
    allStorageUploads: 0,
    allStorageBytes: 0,
    allTransferBytes: 0,
  ).obs;

  final Rx<DateTime?> rangeStart = Rx<DateTime?>(null);
  final Rx<DateTime?> rangeEnd = Rx<DateTime?>(null);
  final Rx<MeetingAsrHistoryStats> rangeStats = MeetingAsrHistoryStats(
    userId: '',
    allAsrCalls: 0,
    allAudioSeconds: 0,
    allAudioFileBytes: 0,
    allTranscriptBytes: 0,
  ).obs;
  final Rx<MeetingStorageHistoryStats> rangeStorageStats =
      MeetingStorageHistoryStats(
    userId: '',
    allStorageUploads: 0,
    allStorageBytes: 0,
    allTransferBytes: 0,
  ).obs;

  @override
  void onInit() {
    super.onInit();
    loadAllStats();
  }

  Future<void> loadAllStats() async {
    isLoading.value = true;
    try {
      final now = DateTime.now();

      final todayList = await _usageService.getMeetingHistoryStats(
        startDate: DateTime(now.year, now.month, now.day),
        endDate: DateTime(now.year, now.month, now.day),
      );
      todayStats.value = _usageService.aggregateMeetingStats(todayList);

      final historyStart = now.subtract(const Duration(days: 7));
      historyDaily.value = await _usageService.getMeetingHistoryStats(
        startDate:
            DateTime(historyStart.year, historyStart.month, historyStart.day),
        endDate: DateTime(now.year, now.month, now.day),
      );
      historyStats.value =
          _usageService.aggregateMeetingStats(historyDaily.value);

      final todayStorageDaily =
          await _usageService.getMeetingStorageHistoryStats(
        startDate: DateTime(now.year, now.month, now.day),
        endDate: DateTime(now.year, now.month, now.day),
      );
      todayStorageStats.value =
          _usageService.aggregateMeetingStorageStats(todayStorageDaily);

      final historyStorageDaily =
          await _usageService.getMeetingStorageHistoryStats(
        startDate:
            DateTime(historyStart.year, historyStart.month, historyStart.day),
        endDate: DateTime(now.year, now.month, now.day),
      );
      historyStorageStats.value =
          _usageService.aggregateMeetingStorageStats(historyStorageDaily);

      if (rangeStart.value != null && rangeEnd.value != null) {
        final customAsrDaily = await _usageService.getMeetingHistoryStats(
          startDate: DateTime(rangeStart.value!.year, rangeStart.value!.month,
              rangeStart.value!.day),
          endDate: DateTime(
              rangeEnd.value!.year, rangeEnd.value!.month, rangeEnd.value!.day),
        );
        rangeStats.value = _usageService.aggregateMeetingStats(customAsrDaily);
        final customStorageDaily =
            await _usageService.getMeetingStorageHistoryStats(
          startDate: DateTime(rangeStart.value!.year, rangeStart.value!.month,
              rangeStart.value!.day),
          endDate: DateTime(
              rangeEnd.value!.year, rangeEnd.value!.month, rangeEnd.value!.day),
        );
        rangeStorageStats.value =
            _usageService.aggregateMeetingStorageStats(customStorageDaily);
      } else {
        rangeStats.value = historyStats.value;
        rangeStorageStats.value = historyStorageStats.value;
      }

      Logger.info('会议统计数据加载完成');
    } catch (e) {
      Logger.error('加载会议统计数据失败: $e');
    } finally {
      isLoading.value = false;
    }
  }

  void switchTimeRange(int index) {
    selectedTabIndex.value = index;
    switch (index) {
      case 0:
        selectedTimeRange.value = 'today'.tr; // 今日
        break;
      case 1:
        selectedTimeRange.value = 'history'.tr; // 历史
        break;
      default:
        selectedTimeRange.value = 'today'.tr; // 今日
        break;
    }
  }

  MeetingAsrHistoryStats get currentStats {
    switch (selectedTabIndex.value) {
      case 0:
        return todayStats.value;
      case 1:
        return rangeStats.value;
      default:
        return todayStats.value;
    }
  }

  String formatDuration(int seconds) {
    if (seconds < 60) {
      return '$seconds${'seconds'.tr}'; // 秒
    } else if (seconds < 3600) {
      final minutes = seconds ~/ 60;
      final remainingSeconds = seconds % 60;
      return '$minutes${'minutes'.tr}$remainingSeconds${'seconds'.tr}'; // 分钟秒
    } else {
      final hours = seconds ~/ 3600;
      final minutes = (seconds % 3600) ~/ 60;
      return '$hours${'hours'.tr}$minutes${'minutes'.tr}'; // 小时分钟
    }
  }

  String formatBytes(int bytes) {
    if (bytes < 1024) return '$bytes B';
    final kb = bytes / 1024;
    if (kb < 1024) return '${kb.toStringAsFixed(1)} KB';
    final mb = kb / 1024;
    if (mb < 1024) return '${mb.toStringAsFixed(1)} MB';
    final gb = mb / 1024;
    return '${gb.toStringAsFixed(1)} GB';
  }

  String formatNumber(int number) {
    if (number < 1000) return number.toString();
    if (number < 1000000) return '${(number / 1000).toStringAsFixed(1)}K';
    return '${(number / 1000000).toStringAsFixed(1)}M';
  }

  Future<void> refreshData() async {
    await loadAllStats();
  }

  Future<void> setCustomRangeDates(DateTime start, DateTime end) async {
    rangeStart.value = start;
    rangeEnd.value = end;
    isLoading.value = true;
    try {
      final asrDaily = await _usageService.getMeetingHistoryStats(
        startDate: DateTime(start.year, start.month, start.day),
        endDate: DateTime(end.year, end.month, end.day),
      );
      rangeStats.value = _usageService.aggregateMeetingStats(asrDaily);
      final storageDaily = await _usageService.getMeetingStorageHistoryStats(
        startDate: DateTime(start.year, start.month, start.day),
        endDate: DateTime(end.year, end.month, end.day),
      );
      rangeStorageStats.value =
          _usageService.aggregateMeetingStorageStats(storageDaily);
    } catch (e) {
      Logger.error('设置自定义日期范围失败: $e');
    } finally {
      isLoading.value = false;
    }
  }

  String formatDate(DateTime d) {
    final y = d.year.toString();
    final m = d.month.toString().padLeft(2, '0');
    final day = d.day.toString().padLeft(2, '0');
    return '$y-$m-$day';
  }
}