creates a common abstraction for providers

workers/site/providers/cerebras.ts

@@ -7,8 +7,47 @@ import {
   UnionStringArray,
 } from "mobx-state-tree";
 import ChatSdk from "../lib/chat-sdk";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
+
+export class CerebrasChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    return new OpenAI({
+      baseURL: "https://api.cerebras.ai/v1",
+      apiKey: param.env.CEREBRAS_API_KEY,
+    });
+  }
+
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
+    const llamaTuningParams = {
+      temperature: 0.86,
+      top_p: 0.98,
+      presence_penalty: 0.1,
+      frequency_penalty: 0.3,
+      max_tokens: param.maxTokens as number,
+    };
+
+    return {
+      model: param.model,
+      messages: safeMessages,
+      stream: true,
+    };
+  }
+
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    // Check if this is the final chunk
+    if (chunk.choices && chunk.choices[0]?.finish_reason === "stop") {
+      dataCallback({ type: "chat", data: chunk });
+      return true; // Break the stream
+    }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+}
 
 export class CerebrasSdk {
+  private static provider = new CerebrasChatProvider();
+
   static async handleCerebrasStream(
     param: {
       openai: OpenAI;
@@ -28,73 +67,17 @@ export class CerebrasSdk {
     },
     dataCallback: (data) => void,
   ) {
-    const {
-      preprocessedContext,
-      messages,
-      env,
-      maxTokens,
-      systemPrompt,
-      model,
-    } = param;
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const openai = new OpenAI({
-      baseURL: "https://api.cerebras.ai/v1",
-      apiKey: param.env.CEREBRAS_API_KEY,
-    });
-
-    return CerebrasSdk.streamCerebrasResponse(
-      safeMessages,
+    return this.provider.handleStream(
       {
-        model: param.model,
+        systemPrompt: param.systemPrompt,
+        preprocessedContext: param.preprocessedContext,
         maxTokens: param.maxTokens,
-        openai: openai,
+        messages: param.messages,
+        model: param.model,
+        env: param.env,
+        disableWebhookGeneration: param.disableWebhookGeneration,
       },
       dataCallback,
     );
   }
-  private static async streamCerebrasResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | unknown | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => void,
-  ) {
-    const tuningParams: Record<string, any> = {};
-
-    const llamaTuningParams = {
-      temperature: 0.86,
-      top_p: 0.98,
-      presence_penalty: 0.1,
-      frequency_penalty: 0.3,
-      max_tokens: opts.maxTokens,
-    };
-
-    const getLlamaTuningParams = () => {
-      return llamaTuningParams;
-    };
-
-    const groqStream = await opts.openai.chat.completions.create({
-      model: opts.model,
-      messages: messages,
-
-      stream: true,
-    });
-
-    for await (const chunk of groqStream) {
-      dataCallback({ type: "chat", data: chunk });
-    }
-  }
 }

workers/site/providers/chat-stream-provider.ts

@@ -0,0 +1,49 @@
+import { OpenAI } from "openai";
+import ChatSdk from "../lib/chat-sdk";
+
+export interface CommonProviderParams {
+  openai?: OpenAI; // Optional for providers that use a custom client.
+  systemPrompt: any;
+  preprocessedContext: any;
+  maxTokens: number | unknown | undefined;
+  messages: any;
+  model: string;
+  env: Env;
+  disableWebhookGeneration?: boolean;
+  // Additional fields can be added as needed
+}
+
+export interface ChatStreamProvider {
+  handleStream(
+    param: CommonProviderParams,
+    dataCallback: (data: any) => void,
+  ): Promise<any>;
+}
+
+export abstract class BaseChatProvider implements ChatStreamProvider {
+  abstract getOpenAIClient(param: CommonProviderParams): OpenAI;
+  abstract getStreamParams(param: CommonProviderParams, safeMessages: any[]): any;
+  abstract async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean>;
+
+  async handleStream(
+    param: CommonProviderParams,
+    dataCallback: (data: any) => void,
+  ) {
+    const assistantPrompt = ChatSdk.buildAssistantPrompt({ maxTokens: param.maxTokens });
+    const safeMessages = ChatSdk.buildMessageChain(param.messages, {
+      systemPrompt: param.systemPrompt,
+      model: param.model,
+      assistantPrompt,
+      toolResults: param.preprocessedContext,
+    });
+
+    const client = this.getOpenAIClient(param);
+    const streamParams = this.getStreamParams(param, safeMessages);
+    const stream = await client.chat.completions.create(streamParams);
+
+    for await (const chunk of stream) {
+      const shouldBreak = await this.processChunk(chunk, dataCallback);
+      if (shouldBreak) break;
+    }
+  }
+}

workers/site/providers/claude.ts

@@ -8,43 +8,88 @@ import {
   UnionStringArray,
 } from "mobx-state-tree";
 import ChatSdk from "../lib/chat-sdk";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
 
-export class ClaudeChatSdk {
-  private static async streamClaudeResponse(
-    messages: any[],
-    param: {
-      model: string;
-      maxTokens: number | unknown | undefined;
-      anthropic: Anthropic;
-    },
-    dataCallback: (data: any) => void,
-  ) {
-    const claudeStream = await param.anthropic.messages.create({
-      stream: true,
-      model: param.model,
-      max_tokens: param.maxTokens,
-      messages: messages,
+export class ClaudeChatProvider extends BaseChatProvider {
+  private anthropic: Anthropic | null = null;
+
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    // Claude doesn't use OpenAI client directly, but we need to return something
+    // to satisfy the interface. The actual Anthropic client is created in getStreamParams.
+    return param.openai as OpenAI;
+  }
+
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
+    this.anthropic = new Anthropic({
+      apiKey: param.env.ANTHROPIC_API_KEY,
     });
 
-    for await (const chunk of claudeStream) {
-      if (chunk.type === "message_stop") {
-        dataCallback({
-          type: "chat",
-          data: {
-            choices: [
-              {
-                delta: { content: "" },
-                logprobs: null,
-                finish_reason: "stop",
-              },
-            ],
-          },
-        });
-        break;
-      }
-      dataCallback({ type: "chat", data: chunk });
+    const claudeTuningParams = {
+      temperature: 0.7,
+      max_tokens: param.maxTokens as number,
+    };
+
+    return {
+      stream: true,
+      model: param.model,
+      messages: safeMessages,
+      ...claudeTuningParams
+    };
+  }
+
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    if (chunk.type === "message_stop") {
+      dataCallback({
+        type: "chat",
+        data: {
+          choices: [
+            {
+              delta: { content: "" },
+              logprobs: null,
+              finish_reason: "stop",
+            },
+          ],
+        },
+      });
+      return true; // Break the stream
+    }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+
+  // Override the base handleStream method to use Anthropic client instead of OpenAI
+  async handleStream(
+    param: CommonProviderParams,
+    dataCallback: (data: any) => void,
+  ) {
+    const assistantPrompt = ChatSdk.buildAssistantPrompt({ maxTokens: param.maxTokens });
+    const safeMessages = ChatSdk.buildMessageChain(param.messages, {
+      systemPrompt: param.systemPrompt,
+      model: param.model,
+      assistantPrompt,
+      toolResults: param.preprocessedContext,
+    });
+
+    const streamParams = this.getStreamParams(param, safeMessages);
+
+    if (!this.anthropic) {
+      throw new Error("Anthropic client not initialized");
+    }
+
+    const stream = await this.anthropic.messages.create(streamParams);
+
+    for await (const chunk of stream) {
+      const shouldBreak = await this.processChunk(chunk, dataCallback);
+      if (shouldBreak) break;
     }
   }
+}
+
+// Legacy class for backward compatibility
+export class ClaudeChatSdk {
+  private static provider = new ClaudeChatProvider();
+
   static async handleClaudeStream(
     param: {
       openai: OpenAI;
@@ -63,36 +108,15 @@ export class ClaudeChatSdk {
     },
     dataCallback: (data) => void,
   ) {
-    const {
-      preprocessedContext,
-      messages,
-      env,
-      maxTokens,
-      systemPrompt,
-      model,
-    } = param;
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const anthropic = new Anthropic({
-      apiKey: env.ANTHROPIC_API_KEY,
-    });
-
-    return ClaudeChatSdk.streamClaudeResponse(
-      safeMessages,
+    return this.provider.handleStream(
       {
-        model: param.model,
+        openai: param.openai,
+        systemPrompt: param.systemPrompt,
+        preprocessedContext: param.preprocessedContext,
         maxTokens: param.maxTokens,
-        anthropic: anthropic,
+        messages: param.messages,
+        model: param.model,
+        env: param.env,
       },
       dataCallback,
     );

workers/site/providers/cloudflareAi.ts

@@ -7,8 +7,122 @@ import {
   UnionStringArray,
 } from "mobx-state-tree";
 import ChatSdk from "../lib/chat-sdk";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
+
+export class CloudflareAiChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    const cfAiURL = `https://api.cloudflare.com/client/v4/accounts/${param.env.CLOUDFLARE_ACCOUNT_ID}/ai/v1`;
+
+    return new OpenAI({
+      apiKey: param.env.CLOUDFLARE_API_KEY,
+      baseURL: cfAiURL,
+    });
+  }
+
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
+    const generationParams: Record<string, any> = {
+      model: this.getModelWithPrefix(param.model),
+      messages: safeMessages,
+      stream: true,
+    };
+
+    // Set max_tokens based on model
+    if (this.getModelPrefix(param.model) === "@cf/meta") {
+      generationParams["max_tokens"] = 4096;
+    }
+
+    if (this.getModelPrefix(param.model) === "@hf/mistral") {
+      generationParams["max_tokens"] = 4096;
+    }
+
+    if (param.model.toLowerCase().includes("hermes-2-pro-mistral-7b")) {
+      generationParams["max_tokens"] = 1000;
+    }
+
+    if (param.model.toLowerCase().includes("openhermes-2.5-mistral-7b-awq")) {
+      generationParams["max_tokens"] = 1000;
+    }
+
+    if (param.model.toLowerCase().includes("deepseek-coder-6.7b-instruct-awq")) {
+      generationParams["max_tokens"] = 590;
+    }
+
+    if (param.model.toLowerCase().includes("deepseek-math-7b-instruct")) {
+      generationParams["max_tokens"] = 512;
+    }
+
+    if (param.model.toLowerCase().includes("neural-chat-7b-v3-1-awq")) {
+      generationParams["max_tokens"] = 590;
+    }
+
+    if (param.model.toLowerCase().includes("openchat-3.5-0106")) {
+      generationParams["max_tokens"] = 2000;
+    }
+
+    return generationParams;
+  }
+
+  private getModelPrefix(model: string): string {
+    let modelPrefix = `@cf/meta`;
+
+    if (model.toLowerCase().includes("llama")) {
+      modelPrefix = `@cf/meta`;
+    }
+
+    if (model.toLowerCase().includes("hermes-2-pro-mistral-7b")) {
+      modelPrefix = `@hf/nousresearch`;
+    }
+
+    if (model.toLowerCase().includes("mistral-7b-instruct")) {
+      modelPrefix = `@hf/mistral`;
+    }
+
+    if (model.toLowerCase().includes("gemma")) {
+      modelPrefix = `@cf/google`;
+    }
+
+    if (model.toLowerCase().includes("deepseek")) {
+      modelPrefix = `@cf/deepseek-ai`;
+    }
+
+    if (model.toLowerCase().includes("openchat-3.5-0106")) {
+      modelPrefix = `@cf/openchat`;
+    }
+
+    const isNueralChat = model
+      .toLowerCase()
+      .includes("neural-chat-7b-v3-1-awq");
+    if (
+      isNueralChat ||
+      model.toLowerCase().includes("openhermes-2.5-mistral-7b-awq") ||
+      model.toLowerCase().includes("zephyr-7b-beta-awq") ||
+      model.toLowerCase().includes("deepseek-coder-6.7b-instruct-awq")
+    ) {
+      modelPrefix = `@hf/thebloke`;
+    }
+
+    return modelPrefix;
+  }
+
+  private getModelWithPrefix(model: string): string {
+    return `${this.getModelPrefix(model)}/${model}`;
+  }
+
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    // Check if this is the final chunk
+    if (chunk.choices && chunk.choices[0]?.finish_reason === "stop") {
+      dataCallback({ type: "chat", data: chunk });
+      return true; // Break the stream
+    }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+}
 
 export class CloudflareAISdk {
+  private static provider = new CloudflareAiChatProvider();
+
   static async handleCloudflareAIStream(
     param: {
       openai: OpenAI;
@@ -27,148 +141,16 @@ export class CloudflareAISdk {
     },
     dataCallback: (data) => void,
   ) {
-    const {
-      preprocessedContext,
-      messages,
-      env,
-      maxTokens,
-      systemPrompt,
-      model,
-    } = param;
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const cfAiURL = `https://api.cloudflare.com/client/v4/accounts/${env.CLOUDFLARE_ACCOUNT_ID}/ai/v1`;
-
-    console.log({ cfAiURL });
-    const openai = new OpenAI({
-      apiKey: env.CLOUDFLARE_API_KEY,
-      baseURL: cfAiURL,
-    });
-
-    return CloudflareAISdk.streamCloudflareAIResponse(
-      safeMessages,
+    return this.provider.handleStream(
       {
-        model: param.model,
+        systemPrompt: param.systemPrompt,
+        preprocessedContext: param.preprocessedContext,
         maxTokens: param.maxTokens,
-        openai: openai,
+        messages: param.messages,
+        model: param.model,
+        env: param.env,
       },
       dataCallback,
     );
   }
-  private static async streamCloudflareAIResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | unknown | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => void,
-  ) {
-    const tuningParams: Record<string, any> = {};
-
-    const llamaTuningParams = {
-      temperature: 0.86,
-      top_p: 0.98,
-      presence_penalty: 0.1,
-      frequency_penalty: 0.3,
-      max_tokens: opts.maxTokens,
-    };
-
-    const getLlamaTuningParams = () => {
-      return llamaTuningParams;
-    };
-
-    let modelPrefix = `@cf/meta`;
-
-    if (opts.model.toLowerCase().includes("llama")) {
-      modelPrefix = `@cf/meta`;
-    }
-
-    if (opts.model.toLowerCase().includes("hermes-2-pro-mistral-7b")) {
-      modelPrefix = `@hf/nousresearch`;
-    }
-
-    if (opts.model.toLowerCase().includes("mistral-7b-instruct")) {
-      modelPrefix = `@hf/mistral`;
-    }
-
-    if (opts.model.toLowerCase().includes("gemma")) {
-      modelPrefix = `@cf/google`;
-    }
-
-    if (opts.model.toLowerCase().includes("deepseek")) {
-      modelPrefix = `@cf/deepseek-ai`;
-    }
-
-    if (opts.model.toLowerCase().includes("openchat-3.5-0106")) {
-      modelPrefix = `@cf/openchat`;
-    }
-
-    const isNueralChat = opts.model
-      .toLowerCase()
-      .includes("neural-chat-7b-v3-1-awq");
-    if (
-      isNueralChat ||
-      opts.model.toLowerCase().includes("openhermes-2.5-mistral-7b-awq") ||
-      opts.model.toLowerCase().includes("zephyr-7b-beta-awq") ||
-      opts.model.toLowerCase().includes("deepseek-coder-6.7b-instruct-awq")
-    ) {
-      modelPrefix = `@hf/thebloke`;
-    }
-
-    const generationParams: Record<string, any> = {
-      model: `${modelPrefix}/${opts.model}`,
-      messages: messages,
-      stream: true,
-    };
-
-    if (modelPrefix === "@cf/meta") {
-      generationParams["max_tokens"] = 4096;
-    }
-
-    if (modelPrefix === "@hf/mistral") {
-      generationParams["max_tokens"] = 4096;
-    }
-
-    if (opts.model.toLowerCase().includes("hermes-2-pro-mistral-7b")) {
-      generationParams["max_tokens"] = 1000;
-    }
-
-    if (opts.model.toLowerCase().includes("openhermes-2.5-mistral-7b-awq")) {
-      generationParams["max_tokens"] = 1000;
-    }
-
-    if (opts.model.toLowerCase().includes("deepseek-coder-6.7b-instruct-awq")) {
-      generationParams["max_tokens"] = 590;
-    }
-
-    if (opts.model.toLowerCase().includes("deepseek-math-7b-instruct")) {
-      generationParams["max_tokens"] = 512;
-    }
-
-    if (opts.model.toLowerCase().includes("neural-chat-7b-v3-1-awq")) {
-      generationParams["max_tokens"] = 590;
-    }
-
-    if (opts.model.toLowerCase().includes("openchat-3.5-0106")) {
-      generationParams["max_tokens"] = 2000;
-    }
-
-    const cloudflareAiStream = await opts.openai.chat.completions.create({
-      ...generationParams,
-    });
-
-    for await (const chunk of cloudflareAiStream) {
-      dataCallback({ type: "chat", data: chunk });
-    }
-  }
 }

workers/site/providers/fireworks.ts

@@ -10,33 +10,44 @@ import {
 } from "mobx-state-tree";
 import Message from "../models/Message";
 import ChatSdk from "../lib/chat-sdk";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
 
-export class FireworksAiChatSdk {
-  private static async streamFireworksResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | unknown | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => void,
-  ) {
+export class FireworksAiChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    return new OpenAI({
+      apiKey: param.env.FIREWORKS_API_KEY,
+      baseURL: "https://api.fireworks.ai/inference/v1",
+    });
+  }
+
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
     let modelPrefix = "accounts/fireworks/models/";
-    if (opts.model.toLowerCase().includes("yi-")) {
+    if (param.model.toLowerCase().includes("yi-")) {
       modelPrefix = "accounts/yi-01-ai/models/";
     }
 
-    const fireworksStream = await opts.openai.chat.completions.create({
-      model: `${modelPrefix}${opts.model}`,
-      messages: messages,
+    return {
+      model: `${modelPrefix}${param.model}`,
+      messages: safeMessages,
       stream: true,
-    });
-
-    for await (const chunk of fireworksStream) {
-      dataCallback({ type: "chat", data: chunk });
-    }
+    };
   }
 
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    // Check if this is the final chunk
+    if (chunk.choices && chunk.choices[0]?.finish_reason === "stop") {
+      dataCallback({ type: "chat", data: chunk });
+      return true; // Break the stream
+    }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+}
+
+export class FireworksAiChatSdk {
+  private static provider = new FireworksAiChatProvider();
+
   static async handleFireworksStream(
     param: {
       openai: OpenAI;
@@ -55,36 +66,14 @@ export class FireworksAiChatSdk {
     },
     dataCallback: (data) => void,
   ) {
-    const {
-      preprocessedContext,
-      messages,
-      env,
-      maxTokens,
-      systemPrompt,
-      model,
-    } = param;
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const fireworksOpenAIClient = new OpenAI({
-      apiKey: param.env.FIREWORKS_API_KEY,
-      baseURL: "https://api.fireworks.ai/inference/v1",
-    });
-    return FireworksAiChatSdk.streamFireworksResponse(
-      safeMessages,
+    return this.provider.handleStream(
       {
-        model: param.model,
+        systemPrompt: param.systemPrompt,
+        preprocessedContext: param.preprocessedContext,
         maxTokens: param.maxTokens,
-        openai: fireworksOpenAIClient,
+        messages: param.messages,
+        model: param.model,
+        env: param.env,
       },
       dataCallback,
     );

workers/site/providers/google.ts

@@ -1,97 +1,75 @@
 import { OpenAI } from "openai";
 import ChatSdk from "../lib/chat-sdk";
 import { StreamParams } from "../services/ChatService";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
+
+export class GoogleChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    return new OpenAI({
+      baseURL: "https://generativelanguage.googleapis.com/v1beta/openai",
+      apiKey: param.env.GEMINI_API_KEY,
+    });
+  }
+
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
+    return {
+      model: param.model,
+      messages: safeMessages,
+      stream: true,
+    };
+  }
+
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    if (chunk.choices?.[0]?.finish_reason === "stop") {
+      dataCallback({
+        type: "chat",
+        data: {
+          choices: [
+            {
+              delta: { content: chunk.choices[0].delta.content || "" },
+              finish_reason: "stop",
+              index: chunk.choices[0].index,
+            },
+          ],
+        },
+      });
+      return true; // Break the stream
+    } else {
+      dataCallback({
+        type: "chat",
+        data: {
+          choices: [
+            {
+              delta: { content: chunk.choices?.[0]?.delta?.content || "" },
+              finish_reason: null,
+              index: chunk.choices?.[0]?.index || 0,
+            },
+          ],
+        },
+      });
+      return false; // Continue the stream
+    }
+  }
+}
 
 export class GoogleChatSdk {
+  private static provider = new GoogleChatProvider();
+
   static async handleGoogleStream(
     param: StreamParams,
     dataCallback: (data) => void,
   ) {
-    const {
-      preprocessedContext,
-      messages,
-      env,
-      maxTokens,
-      systemPrompt,
-      model,
-    } = param;
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const openai = new OpenAI({
-      baseURL: "https://generativelanguage.googleapis.com/v1beta/openai",
-      apiKey: param.env.GEMINI_API_KEY,
-    });
-
-    return GoogleChatSdk.streamGoogleResponse(
-      safeMessages,
+    return this.provider.handleStream(
       {
-        model: param.model,
+        systemPrompt: param.systemPrompt,
+        preprocessedContext: param.preprocessedContext,
         maxTokens: param.maxTokens,
-        openai: openai,
+        messages: param.messages,
+        model: param.model,
+        env: param.env,
+        disableWebhookGeneration: param.disableWebhookGeneration,
       },
       dataCallback,
     );
   }
-  private static async streamGoogleResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | unknown | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => void,
-  ) {
-    const chatReq = JSON.stringify({
-      model: opts.model,
-      messages: messages,
-      stream: true,
-    });
-
-    const googleStream = await opts.openai.chat.completions.create(
-      JSON.parse(chatReq),
-    );
-
-    for await (const chunk of googleStream) {
-      console.log(JSON.stringify(chunk));
-
-      if (chunk.choices?.[0]?.finishReason === "stop") {
-        dataCallback({
-          type: "chat",
-          data: {
-            choices: [
-              {
-                delta: { content: chunk.choices[0].delta.content || "" },
-                finish_reason: "stop",
-                index: chunk.choices[0].index,
-              },
-            ],
-          },
-        });
-        break;
-      } else {
-        dataCallback({
-          type: "chat",
-          data: {
-            choices: [
-              {
-                delta: { content: chunk.choices?.[0]?.delta?.content || "" },
-                finish_reason: null,
-                index: chunk.choices?.[0]?.index || 0,
-              },
-            ],
-          },
-        });
-      }
-    }
-  }
 }

workers/site/providers/groq.ts

@@ -6,9 +6,49 @@ import {
   ModelSnapshotType2,
   UnionStringArray,
 } from "mobx-state-tree";
-import ChatSdk from "../lib/chat-sdk";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
 
+export class GroqChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    return new OpenAI({
+      baseURL: "https://api.groq.com/openai/v1",
+      apiKey: param.env.GROQ_API_KEY,
+    });
+  }
+
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
+    const llamaTuningParams = {
+      temperature: 0.86,
+      top_p: 0.98,
+      presence_penalty: 0.1,
+      frequency_penalty: 0.3,
+      max_tokens: param.maxTokens as number,
+    };
+
+    return {
+      model: param.model,
+      messages: safeMessages,
+      stream: true,
+      ...llamaTuningParams
+    };
+  }
+
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    // Check if this is the final chunk
+    if (chunk.choices && chunk.choices[0]?.finish_reason === "stop") {
+      dataCallback({ type: "chat", data: chunk });
+      return true; // Break the stream
+    }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+}
+
+// Legacy class for backward compatibility
 export class GroqChatSdk {
+  private static provider = new GroqChatProvider();
+
   static async handleGroqStream(
     param: {
       openai: OpenAI;
@@ -27,73 +67,16 @@ export class GroqChatSdk {
     },
     dataCallback: (data) => void,
   ) {
-    const {
-      preprocessedContext,
-      messages,
-      env,
-      maxTokens,
-      systemPrompt,
-      model,
-    } = param;
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const openai = new OpenAI({
-      baseURL: "https://api.groq.com/openai/v1",
-      apiKey: param.env.GROQ_API_KEY,
-    });
-
-    return GroqChatSdk.streamGroqResponse(
-      safeMessages,
+    return this.provider.handleStream(
       {
-        model: param.model,
+        systemPrompt: param.systemPrompt,
+        preprocessedContext: param.preprocessedContext,
         maxTokens: param.maxTokens,
-        openai: openai,
+        messages: param.messages,
+        model: param.model,
+        env: param.env,
       },
       dataCallback,
     );
   }
-  private static async streamGroqResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | unknown | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => void,
-  ) {
-    const tuningParams: Record<string, any> = {};
-
-    const llamaTuningParams = {
-      temperature: 0.86,
-      top_p: 0.98,
-      presence_penalty: 0.1,
-      frequency_penalty: 0.3,
-      max_tokens: opts.maxTokens,
-    };
-
-    const getLlamaTuningParams = () => {
-      return llamaTuningParams;
-    };
-
-    const groqStream = await opts.openai.chat.completions.create({
-      model: opts.model,
-      messages: messages,
-      frequency_penalty: 2,
-      stream: true,
-      temperature: 0.78,
-    });
-
-    for await (const chunk of groqStream) {
-      dataCallback({ type: "chat", data: chunk });
-    }
-  }
 }

workers/site/providers/openai.ts

@@ -1,65 +1,16 @@
 import { OpenAI } from "openai";
-import ChatSdk from "../lib/chat-sdk";
 import { Utils } from "../lib/utils";
-import {ChatCompletionCreateParamsStreaming} from "openai/resources/chat/completions/completions";
+import { ChatCompletionCreateParamsStreaming } from "openai/resources/chat/completions/completions";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
 
-export class OpenAiChatSdk {
-  static async handleOpenAiStream(
-    ctx: {
-      openai: OpenAI;
-      systemPrompt: any;
-      preprocessedContext: any;
-      maxTokens: unknown | number | undefined;
-      messages: any;
-      model: any;
-    },
-    dataCallback: (data: any) => any,
-  ) {
-    const {
-      openai,
-      systemPrompt,
-      maxTokens,
-      messages,
-      model,
-      preprocessedContext,
-    } = ctx;
-
-    if (!messages?.length) {
-      return new Response("No messages provided", { status: 400 });
-    }
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    return OpenAiChatSdk.streamOpenAiResponse(
-      safeMessages,
-      {
-        model,
-        maxTokens: maxTokens as number,
-        openai: openai,
-      },
-      dataCallback,
-    );
+export class OpenAiChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    return param.openai as OpenAI;
   }
 
-  private static async streamOpenAiResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => any,
-  ) {
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): ChatCompletionCreateParamsStreaming {
     const isO1 = () => {
-      if (opts.model === "o1-preview" || opts.model === "o1-mini") {
+      if (param.model === "o1-preview" || param.model === "o1-mini") {
         return true;
       }
     };
@@ -71,55 +22,93 @@ export class OpenAiChatSdk {
       top_p: 0.98,
       presence_penalty: 0.1,
       frequency_penalty: 0.3,
-      max_tokens: opts.maxTokens,
+      max_tokens: param.maxTokens as number,
     };
 
     const getTuningParams = () => {
       if (isO1()) {
         tuningParams["temperature"] = 1;
-        tuningParams["max_completion_tokens"] = opts.maxTokens + 10000;
+        tuningParams["max_completion_tokens"] = (param.maxTokens as number) + 10000;
         return tuningParams;
       }
       return gpt4oTuningParams;
     };
 
     let completionRequest: ChatCompletionCreateParamsStreaming = {
-      model: opts.model,
+      model: param.model,
       stream: true,
-      messages: messages
+      messages: safeMessages
     };
 
-    const isLocal = opts.openai.baseURL.includes("localhost");
-
+    const client = this.getOpenAIClient(param);
+    const isLocal = client.baseURL.includes("localhost");
 
     if(isLocal) {
-      completionRequest["messages"] = Utils.normalizeWithBlanks(messages)
-      completionRequest["stream_options"] =  {
+      completionRequest["messages"] = Utils.normalizeWithBlanks(safeMessages);
+      completionRequest["stream_options"] = {
         include_usage: true
-      }
+      };
     } else {
-      completionRequest = {...completionRequest, ...getTuningParams()}
+      completionRequest = {...completionRequest, ...getTuningParams()};
     }
 
-    const openAIStream = await opts.openai.chat.completions.create(completionRequest);
+    return completionRequest;
+  }
 
-    for await (const chunk of openAIStream) {
-      if (isLocal && chunk.usage) {
-        dataCallback({
-          type: "chat",
-          data: {
-            choices: [
-              {
-                delta: { content: "" },
-                logprobs: null,
-                finish_reason: "stop",
-              },
-            ],
-          },
-        });
-        break;
-      }
-      dataCallback({ type: "chat", data: chunk });
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    const isLocal = chunk.usage !== undefined;
+
+    if (isLocal && chunk.usage) {
+      dataCallback({
+        type: "chat",
+        data: {
+          choices: [
+            {
+              delta: { content: "" },
+              logprobs: null,
+              finish_reason: "stop",
+            },
+          ],
+        },
+      });
+      return true; // Break the stream
     }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+}
+
+// Legacy class for backward compatibility
+export class OpenAiChatSdk {
+  private static provider = new OpenAiChatProvider();
+
+  static async handleOpenAiStream(
+    ctx: {
+      openai: OpenAI;
+      systemPrompt: any;
+      preprocessedContext: any;
+      maxTokens: unknown | number | undefined;
+      messages: any;
+      model: any;
+    },
+    dataCallback: (data: any) => any,
+  ) {
+    if (!ctx.messages?.length) {
+      return new Response("No messages provided", { status: 400 });
+    }
+
+    return this.provider.handleStream(
+      {
+        openai: ctx.openai,
+        systemPrompt: ctx.systemPrompt,
+        preprocessedContext: ctx.preprocessedContext,
+        maxTokens: ctx.maxTokens,
+        messages: ctx.messages,
+        model: ctx.model,
+        env: {} as Env, // This is not used in OpenAI provider
+      },
+      dataCallback,
+    );
   }
 }

workers/site/providers/xai.ts

@@ -1,86 +1,18 @@
 import { OpenAI } from "openai";
 import ChatSdk from "../lib/chat-sdk";
+import { BaseChatProvider, CommonProviderParams } from "./chat-stream-provider";
 
-export class XaiChatSdk {
-  static async handleXaiStream(
-    ctx: {
-      openai: OpenAI;
-      systemPrompt: any;
-      preprocessedContext: any;
-      maxTokens: unknown | number | undefined;
-      messages: any;
-      disableWebhookGeneration: boolean;
-      model: any;
-      env: Env;
-    },
-    dataCallback: (data: any) => any,
-  ) {
-    const {
-      openai,
-      systemPrompt,
-      maxTokens,
-      messages,
-      env,
-      model,
-      preprocessedContext,
-    } = ctx;
-
-    if (!messages?.length) {
-      return new Response("No messages provided", { status: 400 });
-    }
-
-    const getMaxTokens = async (mt) => {
-      if (mt) {
-        return await ChatSdk.calculateMaxTokens(
-          JSON.parse(JSON.stringify(messages)),
-          {
-            env,
-            maxTokens: mt,
-          },
-        );
-      } else {
-        return undefined;
-      }
-    };
-
-    const assistantPrompt = ChatSdk.buildAssistantPrompt({
-      maxTokens: maxTokens,
-    });
-
-    const safeMessages = ChatSdk.buildMessageChain(messages, {
-      systemPrompt: systemPrompt,
-      model,
-      assistantPrompt,
-      toolResults: preprocessedContext,
-    });
-
-    const xAiClient = new OpenAI({
+export class XaiChatProvider extends BaseChatProvider {
+  getOpenAIClient(param: CommonProviderParams): OpenAI {
+    return new OpenAI({
       baseURL: "https://api.x.ai/v1",
-      apiKey: env.XAI_API_KEY,
+      apiKey: param.env.XAI_API_KEY,
     });
-
-    return XaiChatSdk.streamOpenAiResponse(
-      safeMessages,
-      {
-        model,
-        maxTokens: maxTokens as number,
-        openai: xAiClient,
-      },
-      dataCallback,
-    );
   }
 
-  private static async streamOpenAiResponse(
-    messages: any[],
-    opts: {
-      model: string;
-      maxTokens: number | undefined;
-      openai: OpenAI;
-    },
-    dataCallback: (data: any) => any,
-  ) {
+  getStreamParams(param: CommonProviderParams, safeMessages: any[]): any {
     const isO1 = () => {
-      if (opts.model === "o1-preview" || opts.model === "o1-mini") {
+      if (param.model === "o1-preview" || param.model === "o1-mini") {
         return true;
       }
     };
@@ -94,21 +26,63 @@ export class XaiChatSdk {
     const getTuningParams = () => {
       if (isO1()) {
         tuningParams["temperature"] = 1;
-        tuningParams["max_completion_tokens"] = opts.maxTokens + 10000;
+        tuningParams["max_completion_tokens"] = (param.maxTokens as number) + 10000;
         return tuningParams;
       }
       return gpt4oTuningParams;
     };
 
-    const xAIStream = await opts.openai.chat.completions.create({
-      model: opts.model,
-      messages: messages,
+    return {
+      model: param.model,
+      messages: safeMessages,
       stream: true,
       ...getTuningParams(),
-    });
+    };
+  }
 
-    for await (const chunk of xAIStream) {
+  async processChunk(chunk: any, dataCallback: (data: any) => void): Promise<boolean> {
+    // Check if this is the final chunk
+    if (chunk.choices && chunk.choices[0]?.finish_reason === "stop") {
       dataCallback({ type: "chat", data: chunk });
+      return true; // Break the stream
     }
+
+    dataCallback({ type: "chat", data: chunk });
+    return false; // Continue the stream
+  }
+}
+
+export class XaiChatSdk {
+  private static provider = new XaiChatProvider();
+
+  static async handleXaiStream(
+    ctx: {
+      openai: OpenAI;
+      systemPrompt: any;
+      preprocessedContext: any;
+      maxTokens: unknown | number | undefined;
+      messages: any;
+      disableWebhookGeneration: boolean;
+      model: any;
+      env: Env;
+    },
+    dataCallback: (data: any) => any,
+  ) {
+    if (!ctx.messages?.length) {
+      return new Response("No messages provided", { status: 400 });
+    }
+
+    return this.provider.handleStream(
+      {
+        systemPrompt: ctx.systemPrompt,
+        preprocessedContext: ctx.preprocessedContext,
+        maxTokens: ctx.maxTokens,
+        messages: ctx.messages,
+        model: ctx.model,
+        env: ctx.env,
+        disableWebhookGeneration: ctx.disableWebhookGeneration,
+      },
+      dataCallback,
+    );
   }
 }