From dd0d6016faf1e87fdab11c555ddfa3b8b4dad90b Mon Sep 17 00:00:00 2001
From: Kirigaya <1193466151@qq.com>
Date: Sun, 27 Apr 2025 22:28:29 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B5=8B=E8=AF=95=20OCR=20=E5=85=A8=E6=B5=81?=
 =?UTF-8?q?=E7=A8=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/components/main-panel/chat/chat.ts    |   3 +-
 .../src/components/main-panel/chat/index.vue  |   5 +-
 .../chat/message/toolcall-result-item.vue     |  89 ++++++++++++++
 .../main-panel/chat/message/toolcall.vue      |  35 +++---
 .../components/main-panel/chat/task-loop.ts   |  79 +++++++++---
 service/src/hook/db.ts                        |   6 +-
 service/src/hook/mcp-server.ts                | 102 ----------------
 service/src/hook/ocr.ts                       |  32 -----
 service/src/llm/llm.service.ts                |  48 ++++++--
 service/src/mcp/client.controller.ts          |   9 ++
 service/src/mcp/client.dto.ts                 |  18 ++-
 service/src/mcp/client.service.ts             |  57 ++++++++-
 service/src/mcp/ocr.dto.ts                    |   7 ++
 service/src/mcp/ocr.service.ts                | 112 ++++++++++++++++++
 src/webview.ts                                |   2 +-
 15 files changed, 417 insertions(+), 187 deletions(-)
 create mode 100644 renderer/src/components/main-panel/chat/message/toolcall-result-item.vue
 delete mode 100644 service/src/hook/mcp-server.ts
 delete mode 100644 service/src/hook/ocr.ts
 create mode 100644 service/src/mcp/ocr.dto.ts
 create mode 100644 service/src/mcp/ocr.service.ts

diff --git a/renderer/src/components/main-panel/chat/chat.ts b/renderer/src/components/main-panel/chat/chat.ts
index 1d107e9..cf9d217 100644
--- a/renderer/src/components/main-panel/chat/chat.ts
+++ b/renderer/src/components/main-panel/chat/chat.ts
@@ -13,7 +13,8 @@ export enum MessageState {
     Abort = 'abort',
     ToolCall = 'tool call failed',
     None = 'none',
-    Success = 'success'
+    Success = 'success',
+    ParseJsonError = 'parse json error'
 }
 
 export interface IExtraInfo {
diff --git a/renderer/src/components/main-panel/chat/index.vue b/renderer/src/components/main-panel/chat/index.vue
index cef30a0..5ae05c1 100644
--- a/renderer/src/components/main-panel/chat/index.vue
+++ b/renderer/src/components/main-panel/chat/index.vue
@@ -23,7 +23,10 @@
 
                     <!-- 助手调用的工具部分 -->
                     <div class="message-content" v-else-if="message.role === 'assistant/tool_calls'">
-                        <Message.Toolcall :message="message" :tab-id="props.tabId" />
+                        <Message.Toolcall
+                            :message="message" :tab-id="props.tabId"
+                            @update:tool-result="(value, index) => (message.toolResult || [])[index] = value"
+                        />
                     </div>
                 </div>
 
diff --git a/renderer/src/components/main-panel/chat/message/toolcall-result-item.vue b/renderer/src/components/main-panel/chat/message/toolcall-result-item.vue
new file mode 100644
index 0000000..0711c1c
--- /dev/null
+++ b/renderer/src/components/main-panel/chat/message/toolcall-result-item.vue
@@ -0,0 +1,89 @@
+<template>
+    <el-scrollbar width="100%">
+        <div v-if="props.item.type === 'text'" class="tool-text">
+            {{ props.item.text }}
+        </div>
+
+        <div v-else-if="props.item.type === 'image'" class="tool-image">
+            #{{ props.item.data }}
+            <span v-if="!finishProcess">
+                <el-progress 
+                    :percentage="progress"
+                    :stroke-width="2"
+                    :show-text="false"
+                >
+                    <template #default="{ percentage }">
+                        <span class="percentage-label">{{ progressText }}</span>
+                        <span class="percentage-value">{{ percentage }}%</span>
+                    </template>
+                </el-progress>
+            </span>
+        </div>
+
+        <div v-else class="tool-other">{{ JSON.stringify(props.item) }}</div>
+    </el-scrollbar>
+</template>
+
+<script setup lang="ts">
+import { useMessageBridge } from '@/api/message-bridge';
+import { ToolCallContent } from '@/hook/type';
+import { defineComponent, PropType, defineProps, ref, defineEmits } from 'vue';
+import { tabs } from '../../panel';
+import { IRenderMessage } from '../chat';
+
+defineComponent({ name: 'toolcall-result-item' });
+const emit = defineEmits(['update:item']);
+
+const props = defineProps({
+    item: {
+        type: Object as PropType<ToolCallContent>,
+        required: true
+    }
+});
+
+const metaInfo = props.item._meta || {};
+const { ocr = false, workerId = '' } = metaInfo;
+
+// 确认当前已经完成，如果没有完成，说明
+const progress = ref(0);
+const progressText = ref('');
+const finishProcess = ref(true);
+
+if (ocr) {
+    finishProcess.value = false;
+    const bridge = useMessageBridge();
+    const cancel = bridge.addCommandListener('ocr/worker/log', data => {
+        finishProcess.value = false;
+        const { id, progress: p = 1.0, status = 'finish' } = data;
+        if (id === workerId) {
+            progressText.value = status;
+            progress.value = Math.min(Math.max(p * 100 ,0), 100);
+        }
+    }, { once: false });
+
+    bridge.addCommandListener('ocr/worker/done', () => {
+        progress.value = 1;
+        finishProcess.value = true;
+
+        if (props.item._meta) {
+            const { _meta, ...rest } = props.item;
+            emit('update:item', { ...rest });
+        }
+
+        cancel();
+    }, { once: true });
+}
+</script>
+
+<style>
+.tool-image {
+    position: relative;
+}
+
+.el-progress {
+    position: absolute;
+    bottom: 0;
+    left: 0;
+    right: 0;
+}
+</style>
\ No newline at end of file
diff --git a/renderer/src/components/main-panel/chat/message/toolcall.vue b/renderer/src/components/main-panel/chat/message/toolcall.vue
index 8be6b99..9b5abe6 100644
--- a/renderer/src/components/main-panel/chat/message/toolcall.vue
+++ b/renderer/src/components/main-panel/chat/message/toolcall.vue
@@ -11,7 +11,6 @@
 
         <el-collapse v-model="activeNames" v-if="props.message.tool_calls">
             <el-collapse-item name="tool">
-
                 <template #title>
                     <div class="tool-calls">
                         <div class="tool-call-header">
@@ -52,27 +51,24 @@
                                     :inactive-action-style="'backgroundColor: var(--sidebar)'" />
                             </span>
                         </div>
+
                         <div class="tool-result" v-if="isValid">
+                            <!-- 展示 JSON -->
                             <div v-if="props.message.showJson!.value" class="tool-result-content">
                                 <div class="inner">
                                     <div v-html="toHtml(props.message.toolResult)"></div>
                                 </div>
                             </div>
+
+                            <!-- 展示富文本 -->
                             <span v-else>
                                 <div v-for="(item, index) in props.message.toolResult" :key="index"
                                     class="response-item"
                                 >
-                                    <el-scrollbar width="100%">
-                                        <div v-if="item.type === 'text'" class="tool-text">
-                                            {{ item.text }}
-                                        </div>
-                                        
-                                        <div v-else-if="item.type === 'image'" class="tool-image">
-                                            <img :src="`data:${item.mimeType};base64,${item.data}`" style="max-width: 70%;" />
-                                        </div>
-
-                                        <div v-else class="tool-other">{{ JSON.stringify(item) }}</div>
-                                    </el-scrollbar>
+                                    <ToolcallResultItem
+                                        :item="item"
+                                        @update:item="value => updateToolCallResultItem(value, index)"    
+                                    />
                                 </div>
                             </span>
                         </div>
@@ -96,7 +92,7 @@
 </template>
 
 <script setup lang="ts">
-import { defineProps, ref, watch, PropType, computed } from 'vue';
+import { defineProps, ref, watch, PropType, computed, defineEmits } from 'vue';
 
 import MessageMeta from './message-meta.vue';
 import { markdownToHtml } from '../markdown';
@@ -104,6 +100,8 @@ import { createTest } from '@/views/setting/llm';
 import { IRenderMessage, MessageState } from '../chat';
 import { ToolCallContent } from '@/hook/type';
 
+import ToolcallResultItem from './toolcall-result-item.vue';
+
 const props = defineProps({
     message: {
         type: Object as PropType<IRenderMessage>,
@@ -115,7 +113,6 @@ const props = defineProps({
     }
 });
 
-
 const activeNames = ref<string[]>(props.message.toolResult ? [''] : ['tool']);
 
 watch(
@@ -129,6 +126,10 @@ watch(
     }
 );
 
+/**
+ * @description 将工具调用结果转换成 html
+ * @param toolResult 
+ */
 const toHtml = (toolResult: ToolCallContent[]) => {
     const formattedJson = JSON.stringify(toolResult, null, 2);
     const html = markdownToHtml('```json\n' + formattedJson + '\n```');
@@ -187,6 +188,12 @@ const collectErrors = computed(() => {
     }
 });
 
+const emit = defineEmits(['update:tool-result']);
+
+function updateToolCallResultItem(value: any, index: number) {
+    emit('update:tool-result', value, index);
+}
+
 </script>
 
 <style>
diff --git a/renderer/src/components/main-panel/chat/task-loop.ts b/renderer/src/components/main-panel/chat/task-loop.ts
index aff3382..8f694ae 100644
--- a/renderer/src/components/main-panel/chat/task-loop.ts
+++ b/renderer/src/components/main-panel/chat/task-loop.ts
@@ -5,6 +5,7 @@ import { useMessageBridge } from "@/api/message-bridge";
 import type { OpenAI } from 'openai';
 import { callTool } from "../tool/tools";
 import { llmManager, llms } from "@/views/setting/llm";
+import { pinkLog, redLog } from "@/views/setting/util";
 
 export type ChatCompletionChunk = OpenAI.Chat.Completions.ChatCompletionChunk;
 export type ChatCompletionCreateParamsBase = OpenAI.Chat.Completions.ChatCompletionCreateParams & { id?: string };
@@ -40,13 +41,38 @@ export class TaskLoop {
     private async handleToolCalls(toolCalls: ToolCall[]) {
         // TODO: 调用多个工具并返回调用结果？
         const toolCall = toolCalls[0];
+
+        let toolName: string;
+        let toolArgs: Record<string, any>;
+
         try {
-            const toolName = toolCall.function.name;
-            const toolArgs = JSON.parse(toolCall.function.arguments);
-            const toolResponse = await callTool(toolName, toolArgs);            
-            
-            if (!toolResponse.isError) {
-                // const content = JSON.stringify(toolResponse.content);
+            toolName = toolCall.function.name;
+            toolArgs = JSON.parse(toolCall.function.arguments);
+        } catch (error) {
+            return {
+                content: [{
+                    type: 'error',
+                    text: this.parseErrorObject(error)
+                }],
+                state: MessageState.ParseJsonError
+            };
+        }
+
+
+        try {
+            const toolResponse = await callTool(toolName, toolArgs);
+
+            console.log(toolResponse);
+
+            if (typeof toolResponse === 'string') {
+                console.log(toolResponse);
+                
+                return {
+                    content: toolResponse,
+                    state: MessageState.ToolCall
+                }
+            } else if (!toolResponse.isError) {
+
                 return {
                     content: toolResponse.content,
                     state: MessageState.Success
@@ -65,7 +91,7 @@ export class TaskLoop {
                 msg: `工具调用失败: ${(error as Error).message}`
             });
             console.error(error);
-            
+
             return {
                 content: [{
                     type: 'error',
@@ -190,14 +216,6 @@ export class TaskLoop {
         const loadMessages = tabStorage.messages.slice(- tabStorage.settings.contextLength);
         userMessages.push(...loadMessages);
 
-        // 过滤一下 userMessages，现在的大部分模型只支持 text, image_url and video_url 这三种类型的数据
-        const postProcessMessages = [];
-        for (const msg of userMessages) {
-            if (msg.role === 'tool') {
-                
-            }
-        }
-
         // 增加一个id用于锁定状态
         const id = crypto.randomUUID();
 
@@ -286,13 +304,38 @@ export class TaskLoop {
                         serverName: llms[llmManager.currentModelIndex].id || 'unknown'
                     }
                 });
+                
+                pinkLog('调用工具数量：' + this.streamingToolCalls.value.length);
 
                 const toolCallResult = await this.handleToolCalls(this.streamingToolCalls.value);
 
                 console.log(toolCallResult);
-                
-                
-                if (toolCallResult.content) {
+
+                if (toolCallResult.state === MessageState.ParseJsonError) {
+                    // 如果是因为解析 JSON 错误，则重新开始
+                    tabStorage.messages.pop();
+                    redLog('解析 JSON 错误 ' + this.streamingToolCalls.value[0].function.arguments);
+                    continue;
+                }
+
+                if (toolCallResult.state === MessageState.Success) {
+                    const toolCall = this.streamingToolCalls.value[0];
+
+                    tabStorage.messages.push({
+                        role: 'tool',
+                        tool_call_id: toolCall.id || toolCall.function.name,
+                        content: toolCallResult.content,
+                        extraInfo: {
+                            created: Date.now(),
+                            state: toolCallResult.state,
+                            serverName: llms[llmManager.currentModelIndex].id || 'unknown',
+                            usage: this.completionUsage
+                        }
+                    });
+                }
+
+
+                if (toolCallResult.state === MessageState.ToolCall) {
                     const toolCall = this.streamingToolCalls.value[0];
 
                     tabStorage.messages.push({
diff --git a/service/src/hook/db.ts b/service/src/hook/db.ts
index 74724b3..5ee4d63 100644
--- a/service/src/hook/db.ts
+++ b/service/src/hook/db.ts
@@ -123,6 +123,10 @@ class DiskStorage {
         fs.writeFileSync(filePath, data, options);
     }
 
+    public getStoragePath(filename: string): string {
+        return path.join(this.#storageHome, filename);
+    }
+
     public deleteSync(filename: string): void {
         const filePath = path.join(this.#storageHome, filename);
         if (fs.existsSync(filePath)) {
@@ -139,7 +143,7 @@ interface SettingItem extends Entity {
 interface OcrItem extends Entity {
     filename: string;
     text?: string;
-    textCreateTime: number;
+    createTime: number;
 }
 
 export const diskStorage = new DiskStorage();
diff --git a/service/src/hook/mcp-server.ts b/service/src/hook/mcp-server.ts
deleted file mode 100644
index b79b0ca..0000000
--- a/service/src/hook/mcp-server.ts
+++ /dev/null
@@ -1,102 +0,0 @@
-import * as os from 'os';
-import * as path from 'path';
-import * as fs from 'fs';
-import { v4 as uuidv4 } from 'uuid';
-import { diskStorage } from './db';
-import { PostMessageble } from './adapter';
-
-export function saveBase64ImageData(
-    base64String: string,
-    mimeType: string
-): string {
-
-    // 从 base64 字符串中提取数据部分
-    const base64Data = base64String.replace(/^data:.+;base64,/, '');
-
-    // 生成唯一文件名
-    const fileName = `${uuidv4()}.${mimeType.split('/')[1]}`;
-
-    diskStorage.setSync(fileName, base64Data, { encoding: 'base64' });
-
-    return fileName;
-}
-
-export function loadBase64ImageData(fileName: string): string {
-    const homedir = os.homedir();
-    const imageStorageFolder = path.join(homedir, '.openmcp','storage');
-    const filePath = path.join(imageStorageFolder, fileName);
-    // 读取文件内容
-    if (!fs.existsSync(filePath)) {
-        return '';
-    }
-
-    const fileContent = fs.readFileSync(filePath, { encoding: 'base64' });
-    // 构建 base64 字符串
-    const base64String = `data:image/png;base64,${fileContent}`;
-    return base64String;
-}
-
-interface ToolCallContent {
-    type: string;
-    text?: string;
-    data?: any;
-    mimeType?: string;
-    _meta?: any;
-    [key: string]: any;
-}
-
-interface ToolCallResponse {
-    _meta?: any;
-    content?: ToolCallContent[];
-    isError?: boolean;
-    toolResult?: any;
-}
-
-async function handleImage(
-    content: ToolCallContent,
-    webview: PostMessageble
-) {
-    if (content.data && content.mimeType) {
-        const fileName = saveBase64ImageData(content.data, content.mimeType);
-        content.data = fileName;
-        content._meta = {
-            ocr: true,
-            status: 'pending'
-        };
-
-        // 加入工作线程
-        
-    }
-}
-
-
-/**
- * @description 对 mcp server 返回的结果进行预处理
- * 对于特殊结果构造工作线程解析成文本或者其他格式的数据（比如 image url）
- * 0.x.x 受限于技术，暂时将所有结果转化成文本
- * @param response 
- * @returns 
- */
-export function postProcessMcpToolcallResponse(
-    response: ToolCallResponse,
-    webview: PostMessageble
-): ToolCallResponse {
-    if (response.isError) {
-        // 如果是错误响应，将其转换为错误信息
-        return response;
-    }
-
-    // 将 content 中的图像 base64 提取出来，并保存到本地
-    for (const content of response.content || []) {
-        switch (content.type) {
-            case 'image':
-                handleImage(content, webview);
-                break;
-        
-            default:
-                break;
-        }
-    }
-
-    return response;
-}
\ No newline at end of file
diff --git a/service/src/hook/ocr.ts b/service/src/hook/ocr.ts
deleted file mode 100644
index 4d27ab9..0000000
--- a/service/src/hook/ocr.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-import Tesseract from 'tesseract.js';
-
-
-
-export async function tesseractOCR(
-    imagePath: string,
-    logger: (message: Tesseract.LoggerMessage) => void,
-    lang: string = 'eng+chi_sim'
-) {
-    try {
-        const { data: { text } } = await Tesseract.recognize(
-            imagePath,
-            lang,
-            {
-                logger
-            }
-        );
-
-        return text;
-    } catch (error) {
-        console.error('OCR error:', error);
-    }
-    return '无法识别图片';
-}
-
-export async function ocr(
-    filename: string,
-    logger: (message: Tesseract.LoggerMessage) => void,
-    lang: string = 'eng+chi_sim'
-) {
-    
-}
\ No newline at end of file
diff --git a/service/src/llm/llm.service.ts b/service/src/llm/llm.service.ts
index 5bde736..a793ad0 100644
--- a/service/src/llm/llm.service.ts
+++ b/service/src/llm/llm.service.ts
@@ -2,6 +2,9 @@ import { PostMessageble } from "../hook/adapter";
 import { OpenAI } from "openai";
 import { MyMessageType, MyToolMessageType } from "./llm.dto";
 import { RestfulResponse } from "../common/index.dto";
+import { ocrDB } from "../hook/db";
+import { ToolCallContent } from "../mcp/client.dto";
+import { ocrWorkerStorage } from "../mcp/ocr.service";
 
 export let currentStream: AsyncIterable<any> | null = null;
 
@@ -20,7 +23,7 @@ export async function streamingChatCompletion(
         tools = undefined;
     }
     
-    postProcessMessages(messages);
+    await postProcessMessages(messages);
 
     const stream = await client.chat.completions.create({
         model,
@@ -99,45 +102,66 @@ export function abortMessageService(data: any, webview: PostMessageble): Restful
     }
 }
 
-function postProcessToolMessages(message: MyToolMessageType) {
+async function postProcessToolMessages(message: MyToolMessageType) {
 	if (typeof message.content === 'string') {
 		return;
 	}
 
 	for (const content of message.content) {
 		const contentType = content.type as string;
-		const rawContent = content as any;
+		const rawContent = content as ToolCallContent;
 
-		if (contentType === 'image') {
-			delete rawContent._meta;
-			
+		if (contentType === 'image') {			
 			rawContent.type = 'text';
 			
-			// 从缓存中提取图像数据
-			rawContent.text = '图片已被删除';
+			// 此时图片只会存在三个状态
+            // 1. 图片在 ocrDB 中
+            // 2. 图片的 OCR 仍然在进行中
+            // 3. 图片已被删除
+
+
+            // rawContent.data 就是 filename
+            const result = await ocrDB.findById(rawContent.data);
+            if (result) {
+                rawContent.text = result.text || '';            
+            } else if (rawContent._meta) {
+                const workerId = rawContent._meta.workerId;
+                const worker = ocrWorkerStorage.get(workerId);
+                if (worker) {
+                    const text = await worker.fut;
+                    rawContent.text = text;
+                }
+            } else {
+                rawContent.text = '无效的图片';
+            }
+
+            delete rawContent._meta;
 		}
 	}
 
 	message.content = JSON.stringify(message.content);
 }
 
-export function postProcessMessages(messages: MyMessageType[]) {
+export async function postProcessMessages(messages: MyMessageType[]) {
 	for (const message of messages) {
 		// 去除 extraInfo 属性
 		delete message.extraInfo;
 
 		switch (message.role) {
 			case 'user':
-				break;
+
+                break;
+
 			case 'assistant':
-				break;
+
+                break;
 			
 			case 'system':
 
 				break;
 
 			case 'tool':
-				postProcessToolMessages(message);
+				await postProcessToolMessages(message);
 				break;
 			default:
 				break;
diff --git a/service/src/mcp/client.controller.ts b/service/src/mcp/client.controller.ts
index 845826b..239e48c 100644
--- a/service/src/mcp/client.controller.ts
+++ b/service/src/mcp/client.controller.ts
@@ -1,5 +1,6 @@
 import { Controller, RequestClientType } from "../common";
 import { PostMessageble } from "../hook/adapter";
+import { postProcessMcpToolcallResponse } from "./client.service";
 
 export class ClientController {
 
@@ -130,6 +131,14 @@ export class ClientController {
             name: option.toolName,
             arguments: option.toolArgs
         });
+
+        console.log(JSON.stringify(toolResult, null, 2));
+        
+        postProcessMcpToolcallResponse(toolResult, webview);
+
+        console.log(JSON.stringify(toolResult, null, 2));
+        
+
         return {
             code: 200,
             msg: toolResult
diff --git a/service/src/mcp/client.dto.ts b/service/src/mcp/client.dto.ts
index 1025588..39e348e 100644
--- a/service/src/mcp/client.dto.ts
+++ b/service/src/mcp/client.dto.ts
@@ -34,4 +34,20 @@ export interface McpOptions {
     // 通用客户端选项
     clientName?: string;
     clientVersion?: string;
-}
\ No newline at end of file
+}
+
+export interface ToolCallContent {
+    type: string;
+    text?: string;
+    data?: any;
+    mimeType?: string;
+    _meta?: any;
+    [key: string]: any;
+}
+
+export interface ToolCallResponse {
+    _meta?: any;
+    content?: ToolCallContent[];
+    isError?: boolean;
+    toolResult?: any;
+}
diff --git a/service/src/mcp/client.service.ts b/service/src/mcp/client.service.ts
index d1257c1..4b7c2fb 100644
--- a/service/src/mcp/client.service.ts
+++ b/service/src/mcp/client.service.ts
@@ -2,7 +2,9 @@ import { Client } from "@modelcontextprotocol/sdk/client/index.js";
 
 import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
 import { SSEClientTransport } from "@modelcontextprotocol/sdk/client/sse.js";
-import { McpOptions, McpTransport, IServerVersion } from './client.dto';
+import { McpOptions, McpTransport, IServerVersion, ToolCallResponse, ToolCallContent } from './client.dto';
+import { PostMessageble } from "../hook/adapter";
+import { createOcrWorker, saveBase64ImageData } from "./ocr.service";
 
 // 增强的客户端类
 export class McpClient {
@@ -11,8 +13,6 @@ export class McpClient {
     private options: McpOptions;
     private serverVersion: IServerVersion;
 
-    private transportStdErr: string = '';
-
     constructor(options: McpOptions) {
         this.options = options;
         this.serverVersion = undefined;
@@ -34,7 +34,6 @@ export class McpClient {
 
     // 连接方法
     public async connect(): Promise<void> {
-        this.transportStdErr = '';
 
         // 根据连接类型创建传输层
         switch (this.options.connectionType) {
@@ -129,3 +128,53 @@ export async function connect(options: McpOptions): Promise<McpClient> {
     await client.connect();
     return client;
 }
+
+async function handleImage(
+    content: ToolCallContent,
+    webview: PostMessageble
+) {
+    if (content.data && content.mimeType) {
+        const filename = saveBase64ImageData(content.data, content.mimeType);
+        content.data = filename;
+    
+        // 加入工作线程
+        const worker = createOcrWorker(filename, webview);
+    
+        content._meta = {
+            ocr: true,
+            workerId: worker.id
+        };
+    }
+}
+
+
+/**
+ * @description 对 mcp server 返回的结果进行预处理
+ * 对于特殊结果构造工作线程解析成文本或者其他格式的数据（比如 image url）
+ * 0.x.x 受限于技术，暂时将所有结果转化成文本
+ * @param response 
+ * @returns 
+ */
+export function postProcessMcpToolcallResponse(
+    response: ToolCallResponse,
+    webview: PostMessageble
+): ToolCallResponse {
+    if (response.isError) {
+        // 如果是错误响应，将其转换为错误信息
+        return response;
+    }
+
+    // 将 content 中的图像 base64 提取出来，并保存到本地
+    for (const content of response.content || []) {
+        switch (content.type) {
+            case 'image':
+                handleImage(content, webview);
+                break;
+        
+            default:
+                break;
+        }
+    }
+
+    return response;
+}
\ No newline at end of file
diff --git a/service/src/mcp/ocr.dto.ts b/service/src/mcp/ocr.dto.ts
new file mode 100644
index 0000000..0aa458a
--- /dev/null
+++ b/service/src/mcp/ocr.dto.ts
@@ -0,0 +1,7 @@
+export interface OcrWorker {
+    id: string;
+    name: string;
+    filename: string;
+    createTime: number;
+    fut: Promise<string>
+}
\ No newline at end of file
diff --git a/service/src/mcp/ocr.service.ts b/service/src/mcp/ocr.service.ts
new file mode 100644
index 0000000..db2344f
--- /dev/null
+++ b/service/src/mcp/ocr.service.ts
@@ -0,0 +1,112 @@
+import Tesseract from 'tesseract.js';
+import { PostMessageble } from '../hook/adapter';
+import { v4 as uuidv4 } from 'uuid';
+import { OcrWorker } from './ocr.dto';
+import { diskStorage, ocrDB } from '../hook/db';
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+
+export const ocrWorkerStorage = new Map<string, OcrWorker>();
+
+export function saveBase64ImageData(
+    base64String: string,
+    mimeType: string
+): string {
+
+    // 从 base64 字符串中提取数据部分
+    const base64Data = base64String.replace(/^data:.+;base64,/, '');
+
+    // 生成唯一文件名
+    const fileName = `${uuidv4()}.${mimeType.split('/')[1]}`;
+
+    diskStorage.setSync(fileName, base64Data, { encoding: 'base64' });
+
+    return fileName;
+}
+
+export function loadBase64ImageData(fileName: string): string {
+    const homedir = os.homedir();
+    const imageStorageFolder = path.join(homedir, '.openmcp','storage');
+    const filePath = path.join(imageStorageFolder, fileName);
+    // 读取文件内容
+    if (!fs.existsSync(filePath)) {
+        return '';
+    }
+
+    const fileContent = fs.readFileSync(filePath, { encoding: 'base64' });
+    // 构建 base64 字符串
+    const base64String = `data:image/png;base64,${fileContent}`;
+    return base64String;
+}
+
+
+export async function tesseractOCR(
+    imagePath: string,
+    logger: (message: Tesseract.LoggerMessage) => void,
+    lang: string = 'eng+chi_sim'
+) {
+    try {
+        const { data: { text } } = await Tesseract.recognize(
+            imagePath,
+            lang,
+            {
+                logger
+            }
+        );
+
+        return text;
+    } catch (error) {
+        console.error('OCR error:', error);
+    }
+    return '无法识别图片';
+}
+
+
+export function createOcrWorker(filename: string, webview: PostMessageble): OcrWorker {
+    const workerId = uuidv4();
+
+    const logger = (message: Tesseract.LoggerMessage) => {
+        webview.postMessage({
+            command: 'ocr/worker/log',
+            data: {
+                id: workerId,
+                ...message
+            }
+        });
+    };
+
+    const imagePath = diskStorage.getStoragePath(filename);
+    const fut = tesseractOCR(imagePath, logger);
+
+    fut.then((text) => {
+        webview.postMessage({
+            command: 'ocr/worker/done',
+            data: {
+                id: workerId,
+                text
+            }
+        });
+        
+        ocrDB.insert({
+            id: filename,
+            filename,
+            text,
+            createTime: Date.now()
+        });
+
+        ocrWorkerStorage.delete(workerId);
+    });
+
+    const worker = {
+        id: workerId,
+        name: 'ocr-' + filename,
+        filename,
+        createTime: Date.now(),
+        fut
+    };
+
+    ocrWorkerStorage.set(workerId, worker);
+
+    return worker;
+}
\ No newline at end of file
diff --git a/src/webview.ts b/src/webview.ts
index 2f65158..3ed7e7b 100644
--- a/src/webview.ts
+++ b/src/webview.ts
@@ -97,7 +97,7 @@ export function revealOpenMcpWebviewPanel(
                 break;
 
             default:
-                OpenMCPService.messageController(command, data, panel.webview);                
+                OpenMCPService.routeMessage(command, data, panel.webview);                
                 break;
         }