content: /*
   *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
   *  <p>
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *  <p>
   *  http://www.apache.org/licenses/LICENSE-2.0
   *  <p>
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  package com.agentsflex.store.aliyun;
  
  import com.agentsflex.core.document.Document;
  import com.agentsflex.core.llm.client.HttpClient;
  import com.agentsflex.core.store.DocumentStore;
  import com.agentsflex.core.store.SearchWrapper;
  import com.agentsflex.core.store.StoreOptions;
  import com.agentsflex.core.store.StoreResult;
  import com.agentsflex.core.util.StringUtil;
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.JSONArray;
  import com.alibaba.fastjson.JSONObject;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.*;
  
  /**
   * 文档 https://help.aliyun.com/document_detail/2510317.html
   */
  public class AliyunVectorStore extends DocumentStore {
      private static final Logger LOG = LoggerFactory.getLogger(AliyunVectorStore.class);
  
      private AliyunVectorStoreConfig config;
  
      private final HttpClient httpUtil = new HttpClient();
  
      public AliyunVectorStore(AliyunVectorStoreConfig config) {
          this.config = config;
      }
  
      @Override
      public StoreResult storeInternal(List<Document> documents, StoreOptions options) {
          if (documents == null || documents.isEmpty()) {
              return StoreResult.success();
          }
          Map<String, String> headers = new HashMap<>();
          headers.put("Content-Type", "application/json");
          headers.put("dashvector-auth-token", config.getApiKey());
  
          Map<String, Object> payloadMap = new HashMap<>();
  
          List<Map<String, Object>> payloadDocs = new ArrayList<>();
          for (Document vectorDocument : documents) {
              Map<String, Object> document = new HashMap<>();
              if (vectorDocument.getMetadataMap() != null) {
                  document.put("fields", vectorDocument.getMetadataMap());
              }
              document.put("vector", vectorDocument.getVector());
              document.put("id", vectorDocument.getId());
              payloadDocs.add(document);
          }
  
          payloadMap.put("docs", payloadDocs);
  
          String payload = JSON.toJSONString(payloadMap);
          String url = "https://" + config.getEndpoint() + "/v1/collections/"
              + options.getCollectionNameOrDefault(config.getDefaultCollectionName()) + "/docs";
          String response = httpUtil.post(url, headers, payload);
  
          if (StringUtil.noText(response)) {
              return StoreResult.fail();
          }
  
          JSONObject jsonObject = JSON.parseObject(response);
          Integer code = jsonObject.getInteger("code");
          if (code != null && code == 0) {
              return StoreResult.successWithIds(documents);
          } else {
              LOG.error("delete vector fail: " + response);
              return StoreResult.fail();
          }
      }
  
  
      @Override
      public StoreResult deleteInternal(Collection<?> ids, StoreOptions options) {
          Map<String, String> headers = new HashMap<>();
          headers.put("Content-Type", "application/json");
          headers.put("dashvector-auth-token", config.getApiKey());
  
          Map<String, Object> payloadMap = new HashMap<>();
          payloadMap.put("ids", ids);
          String payload = JSON.toJSONString(payloadMap);
  
          String url = "https://" + config.getEndpoint() + "/v1/collections/"
              + options.getCollectionNameOrDefault(config.getDefaultCollectionName()) + "/docs";
          String response = httpUtil.delete(url, headers, payload);
          if (StringUtil.noText(response)) {
              return StoreResult.fail();
          }
  
          JSONObject jsonObject = JSON.parseObject(response);
          Integer code = jsonObject.getInteger("code");
          if (code != null && code == 0) {
              return StoreResult.success();
          } else {
              LOG.error("delete vector fail: " + response);
              return StoreResult.fail();
          }
      }
  
  
      @Override
      public StoreResult updateInternal(List<Document> documents, StoreOptions options) {
          if (documents == null || documents.isEmpty()) {
              return StoreResult.success();
          }
          Map<String, String> headers = new HashMap<>();
          headers.put("Content-Type", "application/json");
          headers.put("dashvector-auth-token", config.getApiKey());
  
          Map<String, Object> payloadMap = new HashMap<>();
  
          List<Map<String, Object>> payloadDocs = new ArrayList<>();
          for (Document vectorDocument : documents) {
              Map<String, Object> document = new HashMap<>();
              if (vectorDocument.getMetadataMap() != null) {
                  document.put("fields", vectorDocument.getMetadataMap());
              }
              document.put("vector", vectorDocument.getVector());
              document.put("id", vectorDocument.getId());
              payloadDocs.add(document);
          }
  
          payloadMap.put("docs", payloadDocs);
  
          String payload = JSON.toJSONString(payloadMap);
          String url = "https://" + config.getEndpoint() + "/v1/collections/"
              + options.getCollectionNameOrDefault(config.getDefaultCollectionName()) + "/docs";
          String response = httpUtil.put(url, headers, payload);
  
          if (StringUtil.noText(response)) {
              return StoreResult.fail();
          }
  
          JSONObject jsonObject = JSON.parseObject(response);
          Integer code = jsonObject.getInteger("code");
          if (code != null && code == 0) {
              return StoreResult.successWithIds(documents);
          } else {
              LOG.error("delete vector fail: " + response);
              return StoreResult.fail();
          }
  
      }
  
  
      @Override
      public List<Document> searchInternal(SearchWrapper wrapper, StoreOptions options) {
          Map<String, String> headers = new HashMap<>();
          headers.put("Content-Type", "application/json");
          headers.put("dashvector-auth-token", config.getApiKey());
  
          Map<String, Object> payloadMap = new HashMap<>();
          payloadMap.put("vector", wrapper.getVector());
          payloadMap.put("topk", wrapper.getMaxResults());
          payloadMap.put("include_vector", wrapper.isWithVector());
          payloadMap.put("filter", wrapper.toFilterExpression());
  
          String payload = JSON.toJSONString(payloadMap);
          String url = "https://" + config.getEndpoint() + "/v1/collections/"
              + options.getCollectionNameOrDefault(config.getDefaultCollectionName()) + "/query";
          String result = httpUtil.post(url, headers, payload);
  
          if (StringUtil.noText(result)) {
              return null;
          }
  
          //https://help.aliyun.com/document_detail/2510319.html
          JSONObject rootObject = JSON.parseObject(result);
          int code = rootObject.getIntValue("code");
          if (code != 0) {
              //error
              LoggerFactory.getLogger(AliyunVectorStore.class).error("can not search data AliyunVectorStore（code: " + code + "), message: " + rootObject.getString("message"));
              return null;
          }
  
          JSONArray output = rootObject.getJSONArray("output");
          List<Document> documents = new ArrayList<>(output.size());
          for (int i = 0; i < output.size(); i++) {
              JSONObject jsonObject = output.getJSONObject(i);
              Document document = new Document();
              document.setId(jsonObject.getString("id"));
              document.setVector(jsonObject.getObject("vector", double[].class));
              // 阿里云数据采用余弦相似度计算 jsonObject.getDoubleValue("score") 表示余弦距离，
              // 原始余弦距离范围是[0, 2]，0表示最相似，2表示最不相似
              Double distance = jsonObject.getDouble("score");
              if (distance != null) {
                  double score = distance / 2.0;
                  document.setScore(1.0d - score);
              }
  
  
              JSONObject fields = jsonObject.getJSONObject("fields");
              document.addMetadata(fields);
  
              documents.add(document);
          }
  
          return documents;
      }
  }
  