import 'package:flutter/material.dart';
import '../theme/app_colors.dart';

class ChargeEntry extends StatelessWidget {
  final String summary;
  final bool isCharging;
  final VoidCallback onTap;

  const ChargeEntry({
    super.key,
    required this.summary,
    required this.isCharging,
    required this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    final c = context.colors;
    return GestureDetector(
      onTap: isCharging ? onTap : null,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Flexible(
            child: RichText(
              overflow: TextOverflow.ellipsis,
              text: TextSpan(
                style: TextStyle(
                  fontSize: 16,
                  fontWeight: FontWeight.w500,
                  color: c.textPrimary,
                ),
                children: _buildSpans(summary),
              ),
            ),
          ),
          Row(
            children: [
              Text(
                '充电信息',
                style: TextStyle(
                  fontFamily: 'HarmonyOS_Sans_SC',
                  fontSize: 16,
                  fontWeight: FontWeight.w500,
                  color: c.textTertiary,
                ),
              ),
              const SizedBox(width: 4),
              Text(
                '>',
                style: TextStyle(
                  fontFamily: 'HarmonyOS_Sans_SC',
                  fontSize: 16,
                  fontWeight: FontWeight.w500,
                  color: c.textTertiary,
                ),
              ),
            ],
          ),
        ],
      ),
    );
  }

  /// 按 CJK / 非 CJK 拆分字符串，分别应用 HarmonyOS / Flyme
  List<TextSpan> _buildSpans(String text) {
    final spans = <TextSpan>[];
    if (text.isEmpty) return spans;

    final buffer = StringBuffer();
    bool? isCJK;

    void flush() {
      if (buffer.isEmpty) return;
      spans.add(
        TextSpan(
          text: buffer.toString(),
          style: TextStyle(
            fontFamily: (isCJK ?? false) ? 'HarmonyOS_Sans_SC' : 'Flyme',
          ),
        ),
      );
      buffer.clear();
    }

    for (final rune in text.runes) {
      final cjk = _isCJKRune(rune);
      if (isCJK == null || cjk == isCJK) {
        buffer.writeCharCode(rune);
        isCJK = cjk;
      } else {
        flush();
        buffer.writeCharCode(rune);
        isCJK = cjk;
      }
    }
    flush();
    return spans;
  }

  bool _isCJKRune(int rune) {
    // CJK 统一表意文字
    if (rune >= 0x4E00 && rune <= 0x9FFF) return true;
    // CJK 扩展 A
    if (rune >= 0x3400 && rune <= 0x4DBF) return true;
    // 中文标点（。、，：；等）
    if (rune >= 0x3000 && rune <= 0x303F) return true;
    // CJK 兼容符号
    if (rune >= 0xFE30 && rune <= 0xFE4F) return true;
    // 全角字符
    if (rune >= 0xFF00 && rune <= 0xFFEF) return true;
    return false;
  }
}