File size: 6,745 Bytes
ec70da3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | import { setRequestToken, reportTokenError, reportTokenSuccess } from './auth.js';
import { solvePowChallengeWithToken } from './pow.js';
import { getSession } from './session.js';
import { streamHeaders, proxiedFetch } from './headers.js';
import { enqueueRequest, dispatchQueued } from './queue.js';
const BASE_URL = 'https://chat.deepseek.com';
export async function completion({ modelType, prompt, thinkingEnabled = false, searchEnabled = false, parentMessageId = null, refFileIds = [], preferVision = false }) {
// Step 1: Acquire token slot first — PoW and completion must use the same token
const slot = await enqueueRequest(preferVision);
try {
// Step 2: Solve PoW using the same token
const { powResponse } = await solvePowChallengeWithToken(slot.token);
setRequestToken(slot.token);
const session = await getSession(slot.token, modelType);
setRequestToken(null);
const body = {
chat_session_id: session.id,
parent_message_id: parentMessageId,
model_type: modelType,
prompt,
ref_file_ids: refFileIds,
thinking_enabled: thinkingEnabled,
search_enabled: searchEnabled,
action: null,
preempt: false,
};
const res = await proxiedFetch(`${BASE_URL}/api/v0/chat/completion`, {
method: 'POST',
headers: await streamHeaders(slot.token, powResponse),
body: JSON.stringify(body),
});
if (!res.ok) {
const text = await res.text();
// Check for specific DeepSeek error codes
try {
const errJson = JSON.parse(text);
const code = errJson.code;
// 40003 = invalid/expired token
if (code === 40003) {
reportTokenError(slot.token);
throw new Error('Token invalid (40003)');
}
// 40004 = account banned
if (code === 40004) {
reportTokenError(slot.token);
const entry = (await import('./auth.js')).getPoolInfo().find(t => slot.token.startsWith(t.token.replace('...', '')));
console.error(`Account BANNED during completion: ${entry?.email || slot.token.slice(0, 12)}...`);
throw new Error('Account banned (40004)');
}
} catch (parseErr) {
if (parseErr.message.includes('Token invalid') || parseErr.message.includes('Account banned')) throw parseErr;
}
throw new Error(`Completion request failed: ${res.status} ${text}`);
}
reportTokenSuccess(slot.token);
return { body: res.body, slot };
} catch (err) {
slot.release();
dispatchQueued();
throw err;
}
}
export async function* parseSSEStream(body) {
const reader = body.getReader();
const decoder = new TextDecoder();
let buffer = '';
let messageIds = {};
let currentFragmentType = 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('event:')) {
if (line.slice(6).trim() === 'close') return;
continue;
}
if (!line.startsWith('data:')) continue;
const data = line.slice(5).trim();
if (!data) continue;
try {
const parsed = JSON.parse(data);
// Check for error codes mid-stream
if (parsed.code === 40003) {
yield { type: 'error', code: 40003, message: 'Token invalid' };
return;
}
if (parsed.code === 40004) {
yield { type: 'error', code: 40004, message: 'Account banned' };
return;
}
if (parsed.request_message_id != null) {
messageIds.requestMessageId = parsed.request_message_id;
messageIds.responseMessageId = parsed.response_message_id;
}
if (parsed.v?.response?.fragments) {
for (const frag of parsed.v.response.fragments) {
if (frag.type === 'THINK' && frag.content) {
currentFragmentType = 'THINK';
yield { type: 'thinking', content: frag.content, messageIds };
} else if (frag.type === 'RESPONSE' && frag.content) {
currentFragmentType = 'RESPONSE';
yield { type: 'content', content: frag.content, messageIds };
}
}
if (parsed.v.response.accumulated_token_usage != null) {
yield { type: 'usage', usage: parsed.v.response.accumulated_token_usage, messageIds };
}
}
if (parsed.p && parsed.o) {
if (parsed.p === 'response/fragments/-1/content' && parsed.o === 'APPEND' && typeof parsed.v === 'string') {
yield { type: currentFragmentType === 'THINK' ? 'thinking' : 'content', content: parsed.v, messageIds };
} else if (parsed.p === 'response/fragments/-1/content' && !parsed.o && typeof parsed.v === 'string') {
yield { type: currentFragmentType === 'THINK' ? 'thinking' : 'content', content: parsed.v, messageIds };
} else if (parsed.p === 'response/status' && parsed.v === 'FINISHED') {
yield { type: 'done', messageIds };
} else if (parsed.p === 'response' && parsed.o === 'BATCH' && Array.isArray(parsed.v)) {
for (const item of parsed.v) {
if (item.p === 'accumulated_token_usage') {
yield { type: 'usage', usage: item.v, messageIds };
}
}
} else if (parsed.p === 'response/fragments' && parsed.o === 'APPEND' && Array.isArray(parsed.v)) {
for (const frag of parsed.v) {
if (frag.type === 'RESPONSE' && frag.content) {
currentFragmentType = 'RESPONSE';
yield { type: 'content', content: frag.content, messageIds };
} else if (frag.type === 'THINK' && frag.content) {
currentFragmentType = 'THINK';
yield { type: 'thinking', content: frag.content, messageIds };
}
}
}
continue;
}
if (typeof parsed.v === 'string') {
yield { type: currentFragmentType === 'THINK' ? 'thinking' : 'content', content: parsed.v, messageIds };
}
if (Array.isArray(parsed.v)) {
for (const item of parsed.v) {
if (item.p === 'accumulated_token_usage') {
yield { type: 'usage', usage: item.v, messageIds };
}
}
}
} catch {
// skip unparseable lines
}
}
}
} finally {
reader.releaseLock();
}
}
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