location2025/lib/module/analyse/location_analyse_util.dart

import 'dart:math';

import 'package:lottie/lottie.dart';

class LocationAnalyseUtil {
  static LottieDelegates convertKeywordDelegates(List<String> list) {
    const int placeholderCount = 6;

    // 占位 keyPath 名称，例如 keyword1, keyword2, ..., keyword6
    final List<String> keyPaths =
        List.generate(placeholderCount, (index) => 'keyword${index + 1}');

    final List<String> finalTexts;

    if (list.length < placeholderCount) {
      // 不足 6 个，循环填充
      finalTexts =
          List.generate(placeholderCount, (index) => list[index % list.length]);
    } else {
      // 超过 6 个，随机取 6 个不重复
      final List<String> shuffled = List.from(list)..shuffle(Random());
      finalTexts = shuffled.take(placeholderCount).toList();
    }

    // 构建 Lottie 的 ValueDelegate 列表
    final List<ValueDelegate> valueDelegates =
        List.generate(placeholderCount, (index) {
      return ValueDelegate.text(
        [keyPaths[index], keyPaths[index]],
        value: finalTexts[index],
      );
    });

    // 更新绑定
    return LottieDelegates(values: valueDelegates);
  }
}