// 文件路径：utils/BatchUploader.ts

/**
 * BatchUploader 批量上传工具类
 * 用于将大量数据分批发送到后端，避免单次请求数据过大导致失败。
 * 支持设置每批数据大小、批次间延迟、上传函数和完成回调。
 */
/**
 * BatchUploader 批量上传工具类（安全简洁版）
 * 用于将大量数据分批上传，避免一次性请求数据过大导致失败。
 */
export class BatchUploader<T> {
  private dataList: T[];
  private chunkSize: number;
  private delay: number;
  private uploadFunc: (chunk: T[], batchIndex: number, totalBatches: number) => Promise<void>;
  private onComplete?: () => void;

  constructor(options: {
    dataList: T[]; // 统一使用一维数组类型
    chunkSize?: number;
    delay?: number;
    uploadFunc: (chunk: T[], batchIndex: number, totalBatches: number) => Promise<void>;
    onComplete?: () => void;
  }) {
    const { dataList, chunkSize = 8000, delay = 200, uploadFunc, onComplete } = options;

    this.dataList = dataList;
    this.chunkSize = chunkSize;
    this.delay = delay;
    this.uploadFunc = uploadFunc;
    this.onComplete = onComplete;
  }

  public async start() {
    const total = Math.ceil(this.dataList.length / this.chunkSize);

    for (let i = 0; i < total; i++) {
      const chunk = this.dataList.slice(i * this.chunkSize, (i + 1) * this.chunkSize);

      console.log(`正在上传第 ${i + 1}/${total} 批，chunk 大小: ${chunk.length}`);

      await this.uploadFunc(chunk, i + 1, total);

      if (this.delay > 0 && i + 1 < total) {
        await new Promise((res) => setTimeout(res, this.delay));
      }
    }

    this.onComplete?.();
  }
}

//使用示例
// const uploader = new BatchUploader({
//     dataList: features,
//     chunkSize: 15000,
//     delay: 200,
//     uploadFunc: async (chunk, batchNum, totalBatch) => {
//       await addProjectPilePoint();//异步方法
//     },
//     onComplete: () => {
//       console.log('桩点上传完成');
//     }
//   });

//   await uploader.start();