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 = '今日'.obs;

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

  final RxList<MeetingAsrDailyStats> historyDaily = <MeetingAsrDailyStats>[].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 weekStart = now.subtract(Duration(days: now.weekday - 1));
      final weekEnd = weekStart.add(const Duration(days: 6));
      final weekList = await _usageService.getMeetingHistoryStats(
        startDate: DateTime(weekStart.year, weekStart.month, weekStart.day),
        endDate: DateTime(weekEnd.year, weekEnd.month, weekEnd.day),
      );
      weekStats.value = _usageService.aggregateMeetingStats(weekList);

      final monthStart = DateTime(now.year, now.month, 1);
      final monthEnd = DateTime(now.year, now.month + 1, 0);
      final monthList = await _usageService.getMeetingHistoryStats(
        startDate: monthStart,
        endDate: monthEnd,
      );
      monthStats.value = _usageService.aggregateMeetingStats(monthList);

      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),
      );

      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 = '今日';
        break;
      case 1:
        selectedTimeRange.value = '本周';
        break;
      case 2:
        selectedTimeRange.value = '本月';
        break;
      case 3:
        selectedTimeRange.value = '历史';
        break;
    }
  }

  MeetingAsrHistoryStats get currentStats {
    switch (selectedTabIndex.value) {
      case 0:
        return todayStats.value;
      case 1:
        return weekStats.value;
      case 2:
        return monthStats.value;
      default:
        return todayStats.value;
    }
  }

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

  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();
  }
}