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@@ -0,0 +1,178 @@
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+"use client";
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+import { REQUEST_TIMEOUT_MS } from "@/app/constant";
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+import {
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+ ChatOptions,
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+ LLMApi,
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+ LLMModel,
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+} from "../api";
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+import Locale from "../../locales";
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+import {
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+ EventStreamContentType,
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+ fetchEventSource,
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+} from "@fortaine/fetch-event-source";
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+import { prettyObject } from "@/app/utils/format";
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+import { getMessageTextContent } from "@/app/utils";
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+
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+export class DeepSeekApi implements LLMApi {
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+ public apiPath: string;
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+
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+ constructor() {
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+ this.apiPath = 'http://sse.deepseek.ryuiso.com:56780/chat';
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+ }
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+
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+ async chat(options: ChatOptions) {
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+ const messages = options.messages.map((item) => {
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+ return {
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+ role: item.role,
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+ content: getMessageTextContent(item),
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+ }
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+ });
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+
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+ const userMessages = messages.filter(item => item.content);
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+
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+ if (userMessages.length % 2 === 0) {
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+ userMessages.unshift({
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+ role: "user",
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+ content: "⠀",
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+ });
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+ }
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+
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+ // 参数
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+ const params = {
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+ model: 'deepseek-r1:8b',
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+ messages: userMessages,
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+ stream: true,
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+ // 进阶配置
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+ max_tokens: undefined,
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+ temperature: undefined,
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+ };
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+
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+ const controller = new AbortController();
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+
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+ options.onController?.(controller);
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+
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+ try {
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+ const chatPath = this.apiPath;
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+ const chatPayload = {
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+ method: "POST",
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+ body: JSON.stringify(params),
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+ signal: controller.signal,
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+ headers: {
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+ 'Content-Type': 'application/json',
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+ },
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+ };
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+
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+ const requestTimeoutId = setTimeout(() => controller.abort(), REQUEST_TIMEOUT_MS);
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+
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+ let responseText = "";
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+ let remainText = "";
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+ let finished = false;
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+
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+ function animateResponseText() {
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+ if (finished || controller.signal.aborted) {
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+ responseText += remainText;
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+ if (responseText?.length === 0) {
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+ options.onError?.(new Error("请求已中止,请检查网络环境。"));
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+ }
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+ return;
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+ }
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+
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+ if (remainText.length > 0) {
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+ const fetchCount = Math.max(1, Math.round(remainText.length / 60));
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+ const fetchText = remainText.slice(0, fetchCount);
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+ responseText += fetchText;
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+ remainText = remainText.slice(fetchCount);
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+ options.onUpdate?.(responseText, fetchText);
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+ }
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+
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+ requestAnimationFrame(animateResponseText);
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+ }
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+
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+ animateResponseText();
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+
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+ const finish = () => {
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+ if (!finished) {
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+ finished = true;
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+ console.log(remainText, 'remainText');
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+
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+ let text = responseText + remainText;
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+ options.onFinish(text);
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+ }
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+ };
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+
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+ controller.signal.onabort = finish;
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+
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+ fetchEventSource(chatPath, {
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+ ...chatPayload,
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+ async onopen(res: any) {
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+ clearTimeout(requestTimeoutId);
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+ const contentType = res.headers.get("content-type");
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+
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+ if (contentType?.startsWith("text/plain")) {
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+ responseText = await res.clone().text();
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+ return finish();
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+ }
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+
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+ if (
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+ !res.ok ||
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+ !res.headers.get("content-type")?.startsWith(EventStreamContentType) ||
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+ res.status !== 200
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+ ) {
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+ const responseTexts = [responseText];
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+ let extraInfo = await res.clone().text();
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+ try {
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+ const resJson = await res.clone().json();
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+ extraInfo = prettyObject(resJson);
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+ } catch { }
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+
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+ if (res.status === 401) {
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+ responseTexts.push(Locale.Error.Unauthorized);
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+ }
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+
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+ if (extraInfo) {
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+ responseTexts.push(extraInfo);
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+ }
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+
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+ responseText = responseTexts.join("\n\n");
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+
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+ return finish();
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+ }
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+ },
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+ onmessage: (msg) => {
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+ const info = JSON.parse(msg.data);
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+ if (info.event === 'finish') {
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+ return finish();
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+ }
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+ // 获取当前的数据
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+ const currentData = info.data;
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+ const format = '```think' + '' + '```';
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+ if (responseText.startsWith(format)) {
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+ responseText = responseText.replace(format, '');
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+ }
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+ remainText += currentData;
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+ },
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+ onclose() {
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+ finish();
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+ },
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+ onerror(e) {
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+ options.onError?.(e);
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+ throw e;
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+ },
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+ openWhenHidden: true,
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+ });
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+ } catch (e) {
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+ options.onError?.(e as Error);
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+ }
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+ }
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+
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+ async usage() {
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+ return {
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+ used: 0,
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+ total: 0,
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+ };
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+ }
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+
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+ async models(): Promise<LLMModel[]> {
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+ return [];
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+ }
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+}
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