import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:sunny_mochi/core/crash/crash_datasource.dart';
import 'package:sunny_mochi/core/crash/pending_crash_report.dart';
import 'package:sunny_mochi/core/extensions/context_x.dart';
import 'package:sunny_mochi/core/widgets/app_toast.dart';

/// 崩溃报告对话框 — 下次启动时强制展示。
///
/// 用户体验：
/// - "发送报告"：POST 上报 → 关闭弹窗，后台继续正常启动
/// - "跳过"：直接关闭弹窗，继续正常启动
class CrashDialog extends ConsumerStatefulWidget {
  const CrashDialog({super.key, required this.report});
  final PendingCrashReport report;

  @override
  ConsumerState<CrashDialog> createState() => _CrashDialogState();
}

class _CrashDialogState extends ConsumerState<CrashDialog> {
  bool _sending = false;
  bool _showDetail = false;

  Future<void> _send() async {
    setState(() => _sending = true);
    try {
      await ref
          .read(crashDatasourceProvider)
          .sendCrashReport(widget.report);
      if (mounted) {
        Navigator.of(context).pop();
        context.showToast('崩溃报告已发送，感谢您的反馈', type: ToastType.success);
      }
    } catch (e, st) {
      if (mounted) {
        setState(() => _sending = false);
        context.showError(ref, e, st);
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    final report = widget.report;
    final time = report.occurredAtLocal;
    final timeStr = time == null
        ? '未知时间'
        : '${time.year}-${time.month.toString().padLeft(2, '0')}-'
            '${time.day.toString().padLeft(2, '0')} '
            '${time.hour.toString().padLeft(2, '0')}:'
            '${time.minute.toString().padLeft(2, '0')}';

    return AlertDialog(
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(16.r),
      ),
      title: Row(
        children: [
          Icon(
            Icons.warning_amber_rounded,
            color: const Color(0xFFFF9F0A),
            size: 22.sp,
          ),
          SizedBox(width: 8.w),
          Text(
            '上次发生了意外退出',
            style: TextStyle(fontSize: 16.sp, fontWeight: FontWeight.w600),
          ),
        ],
      ),
      content: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            '应用在 $timeStr 崩溃退出。发送崩溃报告有助于我们修复问题，报告不包含您的个人数据。',
            style: TextStyle(
              fontSize: 14.sp,
              color: const Color(0xFF636366),
              height: 1.5,
            ),
          ),
          SizedBox(height: 12.h),
          _InfoRow('设备', '${report.deviceModel} / ${report.osVersion}'),
          _InfoRow('版本', '${report.appVersion}+${report.appBuild}'),
          SizedBox(height: 8.h),
          GestureDetector(
            onTap: () => setState(() => _showDetail = !_showDetail),
            child: Row(
              children: [
                Text(
                  '错误详情',
                  style: TextStyle(
                    fontSize: 13.sp,
                    color: Theme.of(context).colorScheme.primary,
                    fontWeight: FontWeight.w500,
                  ),
                ),
                Icon(
                  _showDetail
                      ? Icons.expand_less_rounded
                      : Icons.expand_more_rounded,
                  size: 18.sp,
                  color: Theme.of(context).colorScheme.primary,
                ),
              ],
            ),
          ),
          if (_showDetail) ...[
            SizedBox(height: 8.h),
            Container(
              constraints: BoxConstraints(maxHeight: 160.h),
              decoration: BoxDecoration(
                color: const Color(0xFFF2F2F7),
                borderRadius: BorderRadius.circular(8.r),
              ),
              child: SingleChildScrollView(
                padding:
                    EdgeInsets.symmetric(horizontal: 10.w, vertical: 8.h),
                child: Text(
                  '${report.error}\n\n${_shortStack(report.stackTrace)}',
                  style: TextStyle(
                    fontSize: 11.sp,
                    color: const Color(0xFF3A3A3C),
                    fontFamily: 'monospace',
                    height: 1.4,
                  ),
                ),
              ),
            ),
          ],
        ],
      ),
      actions: [
        TextButton(
          onPressed: _sending ? null : () => Navigator.of(context).pop(),
          child: Text(
            '跳过',
            style: TextStyle(
              color: const Color(0xFF8E8E93),
              fontSize: 15.sp,
            ),
          ),
        ),
        FilledButton(
          onPressed: _sending ? null : _send,
          child: _sending
              ? SizedBox(
                  width: 16.w,
                  height: 16.w,
                  child: const CircularProgressIndicator.adaptive(
                    strokeWidth: 2,
                    valueColor: AlwaysStoppedAnimation(Colors.white),
                  ),
                )
              : Text('发送报告', style: TextStyle(fontSize: 15.sp)),
        ),
      ],
    );
  }

  String _shortStack(String stack) {
    final lines = stack.split('\n');
    if (lines.length <= 20) return stack;
    return '${lines.take(20).join('\n')}\n...(${lines.length - 20} more lines)';
  }
}

class _InfoRow extends StatelessWidget {
  const _InfoRow(this.label, this.value);
  final String label;
  final String value;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.only(bottom: 4.h),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          SizedBox(
            width: 36.w,
            child: Text(
              label,
              style: TextStyle(
                fontSize: 12.sp,
                color: const Color(0xFFAEAEB2),
              ),
            ),
          ),
          Expanded(
            child: Text(
              value,
              style: TextStyle(
                fontSize: 12.sp,
                color: const Color(0xFF636366),
              ),
            ),
          ),
        ],
      ),
    );
  }
}