fix deepseek streaming issue + add free deep seek chat model

Author: fegloff

src/modules/llms/api/deepseek.ts

@@ -37,17 +37,15 @@ export const deepSeekStreamCompletion = async (
   const data = {
     model,
     stream: true,
-    system: parameters.system,
     max_tokens: limitTokens ? parameters.max_tokens : undefined,
-    messages: prepareConversation(conversation, model, ctx) // .map(m => { return { content: m.content, role: m.role } })
+    messages: prepareConversation(conversation, model, ctx)
   }
   let wordCount = 0
   let wordCountMinimum = 2
   const url = `${API_ENDPOINT}/deepseek/completions`
   if (!ctx.chat?.id) {
     throw new Error('Context chat id should not be empty after openAI streaming')
   }
-
   const response: AxiosResponse = await axios.post(url, data, headersStream)
 
   const completionStream: Readable = response.data
@@ -98,7 +96,7 @@ export const deepSeekStreamCompletion = async (
     }
   }
   completion = completion.replaceAll('...', '')
-  await ctx.api
+  completion !== '' && await ctx.api
     .editMessageText(ctx.chat?.id, msgId, completion)
     .catch((e: any) => {
       if (e instanceof GrammyError) {

src/modules/llms/utils/llmsData.ts

@@ -210,18 +210,18 @@ export const llmData: LLMData = {
       chargeType: 'TOKEN',
       stream: false
     },
-    deepSeek: {
+    'deepseek-chat-free': {
       provider: 'deepseek',
-      name: 'gpt-35-turbo',
-      fullName: 'GPT-3.5 Turbo',
+      name: 'deepseek-chat-free',
+      fullName: 'deepseek-chat',
       botName: 'deepSeekBot',
-      version: 'gpt-3.5-turbo',
+      version: 'deepseek-chat',
       commands: ['ds'],
       prefix: ['ds. '],
-      apiSpec: 'https://docs.x.ai/api#introduction',
-      inputPrice: 0.005,
-      outputPrice: 0.015,
-      maxContextTokens: 131072,
+      apiSpec: 'https://www.deepseek.com/',
+      inputPrice: 0,
+      outputPrice: 0,
+      maxContextTokens: 163840,
       chargeType: 'TOKEN',
       stream: true
     }