mirror of
https://github.com/diegosouzapw/OmniRoute.git
synced 2026-08-07 07:42:13 +03:00
d53780b07f
Integrated into release/v3.8.3 — fix(deepseek-web): SSE parser (APPEND + bare tokens), prompt builder, error handling, session cache cleanup
729 lines
24 KiB
TypeScript
729 lines
24 KiB
TypeScript
import { BaseExecutor, type ExecuteInput } from "./base.ts";
|
|
import { solveDeepSeekPowAsync } from "../lib/deepseek-pow.ts";
|
|
|
|
export const DEEPSEEK_WEB_BASE = "https://chat.deepseek.com";
|
|
const DEEPSEEK_API_BASE = `${DEEPSEEK_WEB_BASE}/api`;
|
|
const COMPLETION_URL = `${DEEPSEEK_API_BASE}/v0/chat/completion`;
|
|
|
|
const FAKE_HEADERS: Record<string, string> = {
|
|
Accept: "*/*",
|
|
"Accept-Encoding": "gzip, deflate, br, zstd",
|
|
"Accept-Language": "en-US,en;q=0.9",
|
|
Origin: DEEPSEEK_WEB_BASE,
|
|
Referer: `${DEEPSEEK_WEB_BASE}/`,
|
|
"User-Agent":
|
|
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36",
|
|
"X-App-Version": "20241129.1",
|
|
"X-Client-Locale": "en-US",
|
|
"X-Client-Platform": "web",
|
|
"X-Client-Version": "1.8.0",
|
|
};
|
|
|
|
// ── Types ────────────────────────────────────────────────────────────────
|
|
|
|
interface PowChallenge {
|
|
algorithm: string;
|
|
challenge: string;
|
|
salt: string;
|
|
signature: string;
|
|
difficulty: number;
|
|
expire_at: number;
|
|
expire_after: number;
|
|
target_path: string;
|
|
}
|
|
|
|
interface TokenInfo {
|
|
accessToken: string;
|
|
expiresAt: number;
|
|
}
|
|
|
|
// ── Token cache (keyed by userToken → short-lived access token) ─────────
|
|
|
|
const tokenCache = new Map<string, TokenInfo>();
|
|
const sessionCache = new Map<string, { sessionId: string; createdAt: number }>();
|
|
|
|
const SESSION_CACHE_TTL_MS = 5 * 60 * 1000;
|
|
const CACHE_MAX_SIZE = 100;
|
|
|
|
function evictOldest(cache: Map<string, unknown>): void {
|
|
if (cache.size >= CACHE_MAX_SIZE) {
|
|
const first = cache.keys().next().value;
|
|
if (first) cache.delete(first);
|
|
}
|
|
}
|
|
|
|
// ── Helpers ──────────────────────────────────────────────────────────────
|
|
|
|
function extractUserToken(credentials: Record<string, unknown>): string | null {
|
|
const raw = credentials?.apiKey || credentials?.accessToken;
|
|
if (typeof raw !== "string" || raw.length === 0) return null;
|
|
// Handle JSON-wrapped tokens (DeepSeek stores token as {"value":"..."})
|
|
try {
|
|
const parsed = JSON.parse(raw);
|
|
if (typeof parsed?.value === "string") return parsed.value;
|
|
} catch {
|
|
// not JSON, use raw
|
|
}
|
|
return raw;
|
|
}
|
|
|
|
function errorResponse(status: number, message: string, dsCode?: number): Response {
|
|
return new Response(
|
|
JSON.stringify({
|
|
error: { message, type: "upstream_error", code: dsCode ?? `HTTP_${status}` },
|
|
}),
|
|
{ status, headers: { "Content-Type": "application/json" } }
|
|
);
|
|
}
|
|
|
|
function resolveModelOptions(
|
|
model?: string,
|
|
bodyObj?: Record<string, unknown>
|
|
): {
|
|
modelType: string;
|
|
thinkingEnabled: boolean;
|
|
searchEnabled: boolean;
|
|
} {
|
|
const m = (model || "").toLowerCase();
|
|
const modelType = m.includes("pro") || m.includes("expert") ? "expert" : "default";
|
|
const thinkingEnabled =
|
|
m.includes("r1") ||
|
|
m.includes("think") ||
|
|
m.includes("reason") ||
|
|
bodyObj?.thinking_enabled === true ||
|
|
bodyObj?.thinking === true ||
|
|
!!bodyObj?.reasoning_effort;
|
|
const searchEnabled =
|
|
m.includes("search") ||
|
|
bodyObj?.search_enabled === true ||
|
|
bodyObj?.search === true ||
|
|
bodyObj?.web_search === true;
|
|
return { modelType, thinkingEnabled, searchEnabled };
|
|
}
|
|
|
|
function generateFakeCookie(): string {
|
|
const ts = Date.now();
|
|
const hex = (n: number) =>
|
|
Array.from({ length: n }, () => Math.floor(Math.random() * 16).toString(16)).join("");
|
|
const uid = () =>
|
|
"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) => {
|
|
const r = (Math.random() * 16) | 0;
|
|
return (c === "x" ? r : (r & 0x3) | 0x8).toString(16);
|
|
});
|
|
return `intercom-HWWAFSESTIME=${ts}; HWWAFSESID=${hex(18)}; Hm_lvt_${uid()}=${Math.floor(ts / 1000)}; _frid=${uid()}`;
|
|
}
|
|
|
|
// ── PoW Solver (DeepSeekHashV1) ─────────────────────────────────────────
|
|
|
|
async function solvePow(challenge: PowChallenge): Promise<string> {
|
|
const answer = await solveDeepSeekPowAsync(
|
|
challenge.algorithm,
|
|
challenge.challenge,
|
|
challenge.salt,
|
|
challenge.difficulty,
|
|
challenge.expire_at
|
|
);
|
|
if (answer < 0) throw new Error("PoW solver failed");
|
|
return Buffer.from(
|
|
JSON.stringify({
|
|
algorithm: challenge.algorithm,
|
|
challenge: challenge.challenge,
|
|
salt: challenge.salt,
|
|
answer,
|
|
signature: challenge.signature,
|
|
target_path: challenge.target_path,
|
|
})
|
|
).toString("base64");
|
|
}
|
|
|
|
// ── SSE Transform (DeepSeek → OpenAI) ───────────────────────────────────
|
|
|
|
function transformSSE(deepseekStream: ReadableStream, model: string): ReadableStream {
|
|
const encoder = new TextEncoder();
|
|
const decoder = new TextDecoder();
|
|
const id = `chatcmpl-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
|
|
const created = Math.floor(Date.now() / 1000);
|
|
let emittedRole = false;
|
|
|
|
return new ReadableStream({
|
|
async start(controller) {
|
|
const reader = deepseekStream.getReader();
|
|
let buffer = "";
|
|
|
|
const emit = (obj: object) => {
|
|
controller.enqueue(encoder.encode(`data: ${JSON.stringify(obj)}\n\n`));
|
|
};
|
|
|
|
const chunk = (delta: object, finish?: string) => {
|
|
emit({
|
|
id,
|
|
object: "chat.completion.chunk",
|
|
created,
|
|
model,
|
|
choices: [{ index: 0, delta, finish_reason: finish ?? null }],
|
|
});
|
|
};
|
|
|
|
try {
|
|
while (true) {
|
|
const { done, value } = await reader.read();
|
|
if (done) break;
|
|
|
|
buffer += decoder.decode(value, { stream: true });
|
|
const lines = buffer.split("\n");
|
|
buffer = lines.pop() || "";
|
|
|
|
for (const line of lines) {
|
|
if (!line.startsWith("data: ") && !line.startsWith("data:")) continue;
|
|
const payload = line.replace(/^data:\s*/, "").trim();
|
|
|
|
if (payload === "[DONE]") {
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
chunk({}, "stop");
|
|
controller.enqueue(encoder.encode("data: [DONE]\n\n"));
|
|
controller.close();
|
|
return;
|
|
}
|
|
|
|
let data: Record<string, unknown>;
|
|
try {
|
|
data = JSON.parse(payload);
|
|
} catch {
|
|
continue;
|
|
}
|
|
|
|
const fragments = (data as any)?.v?.response?.fragments;
|
|
if (Array.isArray(fragments)) {
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
for (const frag of fragments) {
|
|
if (typeof frag.content === "string" && frag.content.length > 0) {
|
|
if (frag.type === "THINK") {
|
|
chunk({ reasoning_content: frag.content });
|
|
} else {
|
|
chunk({ content: frag.content });
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// response/fragments path (array of fragments)
|
|
if ((data as any)?.p === "response/fragments" && Array.isArray((data as any)?.v)) {
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
for (const frag of (data as any).v) {
|
|
if (typeof frag.content === "string" && frag.content.length > 0) {
|
|
if (frag.type === "THINK") {
|
|
chunk({ reasoning_content: frag.content });
|
|
} else {
|
|
chunk({ content: frag.content });
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Incremental APPEND to fragment content (expert/pro mode)
|
|
const p = (data as any)?.p;
|
|
const o = (data as any)?.o;
|
|
if (
|
|
typeof p === "string" &&
|
|
p.includes("/content") &&
|
|
o === "APPEND" &&
|
|
typeof (data as any)?.v === "string"
|
|
) {
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
const isThink = p.includes("thinking") || p.includes("think");
|
|
if (isThink) {
|
|
chunk({ reasoning_content: (data as any).v });
|
|
} else {
|
|
chunk({ content: (data as any).v });
|
|
}
|
|
}
|
|
|
|
// Bare string tokens: {"v": "word"} with no "p" field
|
|
if (typeof (data as any)?.v === "string" && !p && !o) {
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
chunk({ content: (data as any).v });
|
|
}
|
|
|
|
if ((data as any)?.p === "response/status" && (data as any)?.v === "FINISHED") {
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
chunk({}, "stop");
|
|
controller.enqueue(encoder.encode("data: [DONE]\n\n"));
|
|
controller.close();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
} catch (err) {
|
|
controller.error(err);
|
|
return;
|
|
}
|
|
|
|
if (!emittedRole) {
|
|
emittedRole = true;
|
|
chunk({ role: "assistant", content: "" });
|
|
}
|
|
chunk({}, "stop");
|
|
controller.enqueue(encoder.encode("data: [DONE]\n\n"));
|
|
controller.close();
|
|
},
|
|
});
|
|
}
|
|
|
|
async function collectSSEContent(deepseekStream: ReadableStream): Promise<string> {
|
|
const decoder = new TextDecoder();
|
|
const reader = deepseekStream.getReader();
|
|
let buffer = "";
|
|
const parts: string[] = [];
|
|
|
|
while (true) {
|
|
const { done, value } = await reader.read();
|
|
if (done) break;
|
|
buffer += decoder.decode(value, { stream: true });
|
|
const lines = buffer.split("\n");
|
|
buffer = lines.pop() || "";
|
|
|
|
for (const line of lines) {
|
|
if (!line.startsWith("data: ") && !line.startsWith("data:")) continue;
|
|
const payload = line.replace(/^data:\s*/, "").trim();
|
|
try {
|
|
const data = JSON.parse(payload);
|
|
const fragments = data?.v?.response?.fragments;
|
|
if (Array.isArray(fragments)) {
|
|
for (const frag of fragments) {
|
|
if (typeof frag.content === "string") parts.push(frag.content);
|
|
}
|
|
}
|
|
if (data?.p === "response/fragments" && Array.isArray(data?.v)) {
|
|
for (const frag of data.v) {
|
|
if (typeof frag.content === "string") parts.push(frag.content);
|
|
}
|
|
}
|
|
// APPEND to fragment content
|
|
if (
|
|
typeof data?.p === "string" &&
|
|
data.p.includes("/content") &&
|
|
data?.o === "APPEND" &&
|
|
typeof data?.v === "string"
|
|
) {
|
|
parts.push(data.v);
|
|
}
|
|
// Bare string tokens
|
|
if (typeof data?.v === "string" && !data?.p && !data?.o) {
|
|
parts.push(data.v);
|
|
}
|
|
} catch {
|
|
// skip
|
|
}
|
|
}
|
|
}
|
|
|
|
return parts.join("");
|
|
}
|
|
|
|
// ── Prompt builder (DeepSeek native format, matches Chat2API) ────────────
|
|
|
|
function messagesToPrompt(messages: Array<{ role: string; content: string }>): string {
|
|
const extractText = (content: unknown): string => {
|
|
if (Array.isArray(content)) {
|
|
return (content as any[])
|
|
.filter((item: any) => item.type === "text")
|
|
.map((item: any) => item.text)
|
|
.join("\n");
|
|
}
|
|
return String(content || "");
|
|
};
|
|
|
|
if (messages.length === 0) return "";
|
|
|
|
// Collect system prompt(s) and find the last user message
|
|
const systemParts: string[] = [];
|
|
let lastUserContent = "";
|
|
for (const m of messages) {
|
|
if (m.role === "system") {
|
|
const text = extractText(m.content).trim();
|
|
if (text) systemParts.push(text);
|
|
} else if (m.role === "user") {
|
|
lastUserContent = extractText(m.content).trim();
|
|
}
|
|
}
|
|
|
|
const parts: string[] = [];
|
|
if (systemParts.length > 0) {
|
|
parts.push(systemParts.join("\n\n"));
|
|
}
|
|
if (lastUserContent) {
|
|
parts.push(lastUserContent);
|
|
}
|
|
|
|
return parts.join("\n\n").replace(/!\[.*?\]\(.*?\)/g, "");
|
|
}
|
|
|
|
// ── DeepSeek API calls (Bearer token auth, like Chat2API) ───────────────
|
|
|
|
async function acquireAccessToken(
|
|
userToken: string,
|
|
signal?: AbortSignal | null,
|
|
log?: ExecuteInput["log"]
|
|
): Promise<string> {
|
|
const cached = tokenCache.get(userToken);
|
|
if (cached && cached.expiresAt > Math.floor(Date.now() / 1000)) {
|
|
return cached.accessToken;
|
|
}
|
|
|
|
log?.info?.("DEEPSEEK-WEB", "Acquiring access token from /users/current...");
|
|
const resp = await fetch(`${DEEPSEEK_API_BASE}/v0/users/current`, {
|
|
headers: {
|
|
Authorization: `Bearer ${userToken}`,
|
|
...FAKE_HEADERS,
|
|
},
|
|
signal: signal ?? undefined,
|
|
});
|
|
|
|
if (resp.status === 401 || resp.status === 403) {
|
|
throw new Error("Token invalid or expired — get a new userToken from DeepSeek localStorage");
|
|
}
|
|
if (!resp.ok) {
|
|
throw new Error(`users/current HTTP ${resp.status}`);
|
|
}
|
|
|
|
const json = await resp.json();
|
|
if (json?.code && json.code !== 0) {
|
|
const errMsg = json.msg || json?.data?.biz_msg || `error code ${json.code}`;
|
|
tokenCache.delete(userToken);
|
|
throw new Error(`DeepSeek rejected token: ${errMsg}`);
|
|
}
|
|
const bizData = json?.data?.biz_data || json?.biz_data;
|
|
if (!bizData?.token) {
|
|
const errMsg = json?.msg || json?.data?.biz_msg || "Unknown error";
|
|
throw new Error(`Failed to acquire token: ${errMsg}`);
|
|
}
|
|
|
|
const accessToken = bizData.token;
|
|
evictOldest(tokenCache);
|
|
tokenCache.set(userToken, {
|
|
accessToken,
|
|
expiresAt: Math.floor(Date.now() / 1000) + 3600,
|
|
});
|
|
|
|
log?.info?.("DEEPSEEK-WEB", `Access token acquired (${accessToken.length} chars)`);
|
|
return accessToken;
|
|
}
|
|
|
|
async function createSession(
|
|
accessToken: string,
|
|
connectionId: string | undefined,
|
|
signal?: AbortSignal | null
|
|
): Promise<string> {
|
|
const cacheKey = connectionId || accessToken;
|
|
const cached = sessionCache.get(cacheKey);
|
|
if (cached && Date.now() - cached.createdAt < SESSION_CACHE_TTL_MS) {
|
|
return cached.sessionId;
|
|
}
|
|
|
|
const resp = await fetch(`${DEEPSEEK_API_BASE}/v0/chat_session/create`, {
|
|
method: "POST",
|
|
headers: {
|
|
...FAKE_HEADERS,
|
|
"Content-Type": "application/json",
|
|
Authorization: `Bearer ${accessToken}`,
|
|
Cookie: generateFakeCookie(),
|
|
},
|
|
body: JSON.stringify({}),
|
|
signal: signal ?? undefined,
|
|
});
|
|
|
|
if (!resp.ok) throw new Error(`chat_session/create HTTP ${resp.status}`);
|
|
const json = await resp.json();
|
|
const bizData = json?.data?.biz_data || json?.biz_data;
|
|
const id = bizData?.chat_session?.id;
|
|
if (!id) throw new Error(`No session id: code=${json?.code}`);
|
|
|
|
evictOldest(sessionCache);
|
|
sessionCache.set(cacheKey, { sessionId: id, createdAt: Date.now() });
|
|
return id;
|
|
}
|
|
|
|
async function getPowChallenge(
|
|
accessToken: string,
|
|
signal?: AbortSignal | null
|
|
): Promise<PowChallenge> {
|
|
const resp = await fetch(`${DEEPSEEK_API_BASE}/v0/chat/create_pow_challenge`, {
|
|
method: "POST",
|
|
headers: {
|
|
...FAKE_HEADERS,
|
|
"Content-Type": "application/json",
|
|
Authorization: `Bearer ${accessToken}`,
|
|
},
|
|
body: JSON.stringify({ target_path: "/api/v0/chat/completion" }),
|
|
signal: signal ?? undefined,
|
|
});
|
|
if (!resp.ok) throw new Error(`create_pow_challenge HTTP ${resp.status}`);
|
|
const json = await resp.json();
|
|
const bizData = json?.data?.biz_data || json?.biz_data;
|
|
if (!bizData?.challenge?.challenge) throw new Error(`No PoW challenge: code=${json?.code}`);
|
|
return bizData.challenge as PowChallenge;
|
|
}
|
|
|
|
// ── Executor ─────────────────────────────────────────────────────────────
|
|
|
|
export class DeepSeekWebExecutor extends BaseExecutor {
|
|
constructor() {
|
|
super("deepseek-web", { baseUrl: DEEPSEEK_WEB_BASE });
|
|
}
|
|
|
|
async testConnection(
|
|
credentials: Record<string, unknown>,
|
|
signal?: AbortSignal
|
|
): Promise<boolean> {
|
|
try {
|
|
const userToken = extractUserToken(credentials);
|
|
if (!userToken) return false;
|
|
const accessToken = await acquireAccessToken(userToken, signal);
|
|
return !!accessToken;
|
|
} catch {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
async execute({ model, body, stream, credentials, signal, log }: ExecuteInput) {
|
|
const bodyObj = (body || {}) as Record<string, unknown>;
|
|
const messages = (Array.isArray(bodyObj.messages) ? bodyObj.messages : []) as Array<{
|
|
role: string;
|
|
content: string;
|
|
}>;
|
|
const rawCreds = credentials as unknown as Record<string, unknown>;
|
|
|
|
// 1. Extract userToken from credentials.apiKey
|
|
const userToken = extractUserToken(rawCreds);
|
|
if (!userToken) {
|
|
return {
|
|
response: errorResponse(
|
|
400,
|
|
"Invalid credentials: paste your userToken from DeepSeek localStorage " +
|
|
"(DevTools → Application → Local Storage → chat.deepseek.com → userToken)"
|
|
),
|
|
url: COMPLETION_URL,
|
|
headers: {},
|
|
transformedBody: body,
|
|
};
|
|
}
|
|
|
|
try {
|
|
// 2. Exchange userToken for short-lived access token (cached 1h)
|
|
let t0 = Date.now();
|
|
const accessToken = await acquireAccessToken(userToken, signal, log);
|
|
log?.info?.("DEEPSEEK-WEB", `Token acquired in ${Date.now() - t0}ms`);
|
|
|
|
// 3. Create chat session (cached 5min)
|
|
t0 = Date.now();
|
|
const sessionId = await createSession(accessToken, rawCreds.connectionId as string, signal);
|
|
log?.info?.("DEEPSEEK-WEB", `Session created in ${Date.now() - t0}ms`);
|
|
|
|
// 4. Get PoW challenge and solve
|
|
t0 = Date.now();
|
|
const powChallenge = await getPowChallenge(accessToken, signal);
|
|
log?.info?.(
|
|
"DEEPSEEK-WEB",
|
|
`PoW challenge fetched in ${Date.now() - t0}ms (difficulty=${powChallenge.difficulty})`
|
|
);
|
|
t0 = Date.now();
|
|
const powAnswer = await solvePow(powChallenge);
|
|
log?.info?.("DEEPSEEK-WEB", `PoW solved in ${Date.now() - t0}ms`);
|
|
|
|
// 5. Build prompt from messages (DeepSeek native chat markers, matching Chat2API)
|
|
const prompt = messagesToPrompt(messages);
|
|
|
|
// 6. Resolve model type, thinking, and search from model name + body flags
|
|
const { modelType, thinkingEnabled, searchEnabled } = resolveModelOptions(
|
|
model as string,
|
|
bodyObj
|
|
);
|
|
const refFileIds = Array.isArray(bodyObj.ref_file_ids) ? bodyObj.ref_file_ids : [];
|
|
log?.info?.(
|
|
"DEEPSEEK-WEB",
|
|
`model_type=${modelType}, thinking=${thinkingEnabled}, search=${searchEnabled}, files=${refFileIds.length}, stream=${stream !== false}`
|
|
);
|
|
|
|
// 7. Send completion request
|
|
const headers: Record<string, string> = {
|
|
...FAKE_HEADERS,
|
|
"Content-Type": "application/json",
|
|
Authorization: `Bearer ${accessToken}`,
|
|
"X-Ds-Pow-Response": powAnswer,
|
|
"X-Client-Timezone-Offset": String(new Date().getTimezoneOffset() * -60),
|
|
Cookie: generateFakeCookie(),
|
|
};
|
|
|
|
const requestPayload = {
|
|
chat_session_id: sessionId,
|
|
parent_message_id: null,
|
|
model_type: modelType,
|
|
prompt,
|
|
ref_file_ids: refFileIds,
|
|
thinking_enabled: thinkingEnabled,
|
|
search_enabled: searchEnabled,
|
|
preempt: false,
|
|
};
|
|
|
|
t0 = Date.now();
|
|
log?.info?.("DEEPSEEK-WEB", `POST ${COMPLETION_URL}`);
|
|
const resp = await fetch(COMPLETION_URL, {
|
|
method: "POST",
|
|
headers,
|
|
body: JSON.stringify(requestPayload),
|
|
signal: signal ?? undefined,
|
|
});
|
|
|
|
log?.info?.(
|
|
"DEEPSEEK-WEB",
|
|
`Completion response in ${Date.now() - t0}ms, status=${resp.status}`
|
|
);
|
|
|
|
if (!resp.ok) {
|
|
const status = resp.status;
|
|
let errMsg = `DeepSeek API error (${status})`;
|
|
if (status === 401 || status === 403) {
|
|
tokenCache.delete(userToken);
|
|
sessionCache.delete((rawCreds.connectionId as string) || accessToken);
|
|
errMsg = "DeepSeek token expired — get a fresh userToken from localStorage.";
|
|
} else if (status === 429) {
|
|
errMsg = "DeepSeek rate limited. Wait and retry.";
|
|
}
|
|
log?.warn?.("DEEPSEEK-WEB", errMsg);
|
|
|
|
try {
|
|
const errBody = await resp.json();
|
|
if (errBody?.code && errBody.code !== 0) {
|
|
errMsg = `DeepSeek error ${errBody.code}: ${errBody.msg}`;
|
|
}
|
|
} catch {
|
|
/* ignore */
|
|
}
|
|
|
|
return {
|
|
response: errorResponse(status, errMsg),
|
|
url: COMPLETION_URL,
|
|
headers,
|
|
transformedBody: requestPayload,
|
|
};
|
|
}
|
|
|
|
// Check for HTTP 200 with DeepSeek error JSON
|
|
const ct = resp.headers.get("content-type") || "";
|
|
if (ct.includes("application/json")) {
|
|
try {
|
|
const json = await resp.json();
|
|
if (json?.code && json.code !== 0) {
|
|
const errMsg = `DeepSeek error ${json.code}: ${json.msg}`;
|
|
log?.warn?.("DEEPSEEK-WEB", errMsg);
|
|
const status = json.code === 40003 ? 401 : json.code === 40002 ? 429 : 502;
|
|
if (json.code === 40003) {
|
|
tokenCache.delete(userToken);
|
|
sessionCache.delete((rawCreds.connectionId as string) || accessToken);
|
|
}
|
|
return {
|
|
response: errorResponse(status, errMsg, json.code),
|
|
url: COMPLETION_URL,
|
|
headers,
|
|
transformedBody: requestPayload,
|
|
};
|
|
}
|
|
return {
|
|
response: new Response(JSON.stringify(json), {
|
|
status: 200,
|
|
headers: { "Content-Type": "application/json" },
|
|
}),
|
|
url: COMPLETION_URL,
|
|
headers,
|
|
transformedBody: requestPayload,
|
|
};
|
|
} catch {
|
|
/* not JSON, continue */
|
|
}
|
|
}
|
|
|
|
// 8. Transform SSE stream to OpenAI format
|
|
if (stream !== false) {
|
|
const openaiStream = transformSSE(resp.body!, model || modelType);
|
|
return {
|
|
response: new Response(openaiStream, {
|
|
status: 200,
|
|
headers: { "Content-Type": "text/event-stream", "Cache-Control": "no-cache" },
|
|
}),
|
|
url: COMPLETION_URL,
|
|
headers,
|
|
transformedBody: requestPayload,
|
|
};
|
|
}
|
|
|
|
// Non-streaming: collect all content, return OpenAI JSON
|
|
const content = await collectSSEContent(resp.body!);
|
|
const openaiResponse = {
|
|
id: `chatcmpl-${Date.now()}`,
|
|
object: "chat.completion",
|
|
created: Math.floor(Date.now() / 1000),
|
|
model: model || modelType,
|
|
choices: [
|
|
{
|
|
index: 0,
|
|
message: { role: "assistant", content },
|
|
finish_reason: "stop",
|
|
},
|
|
],
|
|
usage: { prompt_tokens: 0, completion_tokens: 0, total_tokens: 0 },
|
|
};
|
|
return {
|
|
response: new Response(JSON.stringify(openaiResponse), {
|
|
status: 200,
|
|
headers: { "Content-Type": "application/json" },
|
|
}),
|
|
url: COMPLETION_URL,
|
|
headers,
|
|
transformedBody: requestPayload,
|
|
};
|
|
} catch (err) {
|
|
const msg = err instanceof Error ? err.message : String(err);
|
|
log?.error?.("DEEPSEEK-WEB", `Execute failed: ${msg}`);
|
|
|
|
if (err instanceof DOMException && err.name === "AbortError") {
|
|
return {
|
|
response: errorResponse(499, "Request cancelled"),
|
|
url: COMPLETION_URL,
|
|
headers: {},
|
|
transformedBody: body,
|
|
};
|
|
}
|
|
|
|
return {
|
|
response: errorResponse(502, `DeepSeek error: ${msg}`),
|
|
url: COMPLETION_URL,
|
|
headers: {},
|
|
transformedBody: body,
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
export const deepseekWebExecutor = new DeepSeekWebExecutor();
|
|
|
|
// Re-export for auto-refresh executor and tests
|
|
export { acquireAccessToken, tokenCache, sessionCache };
|