import 'package:flutter/material.dart';
import '../utils/charge_utils.dart';

/// 充电详情页
class ChargeDetailPage extends StatelessWidget {
  final String chargeType;
  final bool isWireless;
  final double power;
  final double volt;
  final double curr;
  final int? wiredLevel;

  const ChargeDetailPage({
    super.key,
    required this.chargeType,
    required this.isWireless,
    required this.power,
    required this.volt,
    required this.curr,
    this.wiredLevel,
  });

  String _getProtocolDisplay() {
    if (isWireless) return '无线充电（$chargeType）';
    if (chargeType == 'PPS') return 'PPS 快充';
    if (chargeType == 'SDP') return 'USB 充电';
    return chargeType;
  }

  /// 🟢 1.5.0 标定档位显示
  String _getRequestedDisplay() {
    return ChargeUtils.getDetailRequestedPowerWired(
      power,
      wiredLevel,
      chargeType,
    );
  }

  /// 🟢 1.5.0 实际功率显示
  String _getActualDisplay() {
    return ChargeUtils.getDetailActualPowerWired(power, chargeType);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('充电详情'),
        backgroundColor: Colors.transparent,
        elevation: 0,
        foregroundColor: Colors.black,
        iconTheme: const IconThemeData(color: Colors.black),
      ),
      body: Padding(
        padding: const EdgeInsets.all(20.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            _buildDetailRow('协议', _getProtocolDisplay()),
            const Divider(),

            // 🟢 1.5.0 有线充电：标定档位 + 实际功率 两行
            if (!isWireless) ...[
              _buildDetailRow('标定档位', _getRequestedDisplay()),
              const Divider(),
              _buildDetailRow('实际功率', _getActualDisplay()),
              const Divider(),
            ] else ...[
              // 无线充电：保持原样，只显示功率
              _buildDetailRow('功率', ChargeUtils.getDisplayPowerWireless(power)),
              const Divider(),
            ],

            _buildDetailRow('电压', '${volt.toStringAsFixed(2)}V'),
            const Divider(),
            _buildDetailRow('电流', '${curr.toStringAsFixed(2)}A'),
            const Divider(),

            // 辅助信息
            if (isWireless) _buildDetailRow('类型', '无线'),
            if (!isWireless && wiredLevel == null) _buildDetailRow('档位', '自动'),

            const Spacer(),
            Center(
              child: Text(
                '数据来自 BMS 实时日志',
                style: TextStyle(fontSize: 12, color: Colors.grey.shade500),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildDetailRow(String label, String value) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 6.0),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text(
            label,
            style: const TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.w400,
              color: Colors.grey,
            ),
          ),
          Text(
            value,
            style: const TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.w500,
              color: Colors.black87,
            ),
          ),
        ],
      ),
    );
  }
}