package com.ruoyi.ai.controller;
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import com.ruoyi.ai.assistant.KnowledgeChatAgent;
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import com.ruoyi.ai.dto.KnowledgeChatRequest;
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import com.ruoyi.ai.service.KnowledgeRagService;
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import com.ruoyi.approve.pojo.KnowledgeBase;
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import com.ruoyi.approve.service.KnowledgeBaseService;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.framework.web.domain.AjaxResult;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.web.bind.annotation.*;
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import reactor.core.publisher.Flux;
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import java.util.List;
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/**
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* 知识库问答Controller
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*/
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@Slf4j
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@RestController
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@RequestMapping("/ai/knowledge")
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@RequiredArgsConstructor
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@Tag(name = "知识库问答")
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public class KnowledgeChatController {
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private final KnowledgeChatAgent knowledgeChatAgent;
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private final KnowledgeRagService knowledgeRagService;
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private final KnowledgeBaseService knowledgeBaseService;
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/**
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* 知识库问答（流式返回）
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*/
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@PostMapping(value = "/chat", produces = "text/stream;charset=utf-8")
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@Operation(summary = "知识库问答")
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public Flux<String> chat(@RequestBody KnowledgeChatRequest request) {
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if (request.getKnowledgeBaseId() == null) {
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return Flux.just("知识库ID不能为空");
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}
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if (!StringUtils.hasText(request.getMemoryId())) {
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return Flux.just("会话ID不能为空");
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}
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if (!StringUtils.hasText(request.getQuestion())) {
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return Flux.just("问题不能为空");
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}
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KnowledgeBase knowledgeBase = knowledgeBaseService.getById(request.getKnowledgeBaseId());
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if (knowledgeBase == null) {
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return Flux.just("知识库不存在");
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}
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String namespace = "kb-" + request.getKnowledgeBaseId();
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List<String> relevantContents = knowledgeRagService.searchRelevantContent(
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namespace, request.getQuestion(), 5);
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if (relevantContents.isEmpty()) {
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return Flux.just("知识库中未找到相关内容，请先上传相关文档。");
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}
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StringBuilder contextBuilder = new StringBuilder();
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contextBuilder.append("以下是从知识库中检索到的相关内容：\n\n");
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for (int i = 0; i < relevantContents.size(); i++) {
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contextBuilder.append("【内容").append(i + 1).append("】\n");
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contextBuilder.append(relevantContents.get(i)).append("\n\n");
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}
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contextBuilder.append("---\n");
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contextBuilder.append("请基于以上知识库内容回答用户问题：\n");
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contextBuilder.append(request.getQuestion());
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return knowledgeChatAgent.chat(request.getMemoryId(), contextBuilder.toString());
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}
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/**
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* 知识库列表（用于选择知识库）
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*/
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@GetMapping("/list")
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@Operation(summary = "知识库列表")
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public AjaxResult listKnowledgeBases() {
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List<KnowledgeBase> list = knowledgeBaseService.list();
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return AjaxResult.success(list);
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}
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}
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