Adding support for DeepSeek models

Author: EliasPereirah

README.md

@@ -127,46 +127,11 @@ and the answer will be based on the context returning from the "rag endpoint"
 An advanced option for those using Google Gemini may be to use "Grounding with Google Search", this feature is not
 implemented here and has a cost of $35 / 1K grounding requests.
 
-# Proxy
-To get around CORS errors when working with SambaNova a proxy may be necessary.
-
-If you are using Orion via localhost or a hosting with PHP support, you can use the PHP proxy code available in this 
-repository (`proxy.php` file) for this you will also need to add the following JavaScript code in plugins.
-
-To do this, click on "Options" -> Plugins and paste the JavaScript code provided below:
-
-
-```javascript
-let proxy_url =  window.location.origin + window.location.pathname + "/proxy.php";
-// ^^ This assumes the proxy URL is on the same host, otherwise enter it above. ^^
-if(chosen_platform === "sambanova" || chosen_platform === "nvidia"){
-  endpoint = proxy_url+"?platform="+chosen_platform;
-}
-function setProxyEndpoint(event){
-  if(chosen_platform === "sambanova" || chosen_platform === "nvidia"){
-    let proxy_endpoint = proxy_url+"/proxy.php?platform="+chosen_platform;
-    if(proxy_endpoint !== endpoint){
-      endpoint = proxy_endpoint;
-      removeLastMessage();
-    }
-  }
-}
-
-
-let button_send = document.querySelector("#send");
-chat_textarea.addEventListener('keyup', (event) => {
-  if (event.key === 'Enter' && !event.shiftKey) {
-    setProxyEndpoint();
-  }
-});
-
-button_send.addEventListener("click", ()=>{
-  setProxyEndpoint()
-})
-```
+# Cors
+To get around CORS errors when working with SambaNova the API request will pass through `cors-proxy.php`
+which will forward the request to the desired platform. This will not hide your IP address, just forward the request.
 
-Be careful when using any other proxy as sensitive data will be passed through it like your API key and messages. 
-Use only trusted services.
+This is necessary because direct requests via JavaScript in the browser to these platform are not possible.
 
 # YouTube Caption
 To enable AI responses based on YouTube video subtitles, set up an API endpoint to get them.

cors-proxy.php

@@ -0,0 +1,60 @@
+<?php
+
+## If you are going to make this file public on the internet, be sure to implement login restrictions.
+
+//If you are using this script on a different host you will need to uncomment the lines below
+
+/*
+header("Access-Control-Allow-Origin: *");
+header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
+header("Access-Control-Allow-Headers: Content-Type, api-key, x-api-key, anthropic-version, anthropic-dangerous-direct-browser-access, Authorization");
+*/
+
+if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
+    http_response_code(200);
+    exit();
+}
+
+// Note: This proxy code will use the IP address of where it is hosted, the purpose is not to mask or anonymize the user,
+// just to get rid of CORS errors.
+// GitHub Pages does not support PHP, so this proxy code will not work in such an environment.
+
+/**
+ * To get around CORS errors when working with SambaNova a proxy may be necessary.
+ * This code is one of the possible solutions, for it to work you need to be running the code on localhost
+ * or a hosting that supports PHP, this will not work on GitHub pages.
+ */
+
+//ini_set('display_errors', 1);
+$endpoint = $_GET['endpoint'] ?? '';
+if (!filter_var($endpoint, FILTER_VALIDATE_URL)) {
+    exit('Not a valid URL');
+}
+$post_data = file_get_contents('php://input');
+$ch = curl_init($endpoint);
+$received_headers = getallheaders();
+$headers_to_send = [];
+foreach ($received_headers as $key => $value) {
+    if (strtolower($key) === "authorization") {
+        $headers_to_send[] = "$key: $value";
+    }
+}
+$headers_to_send[] = "Content-Type: application/json";
+curl_setopt($ch, CURLOPT_HTTPHEADER, $headers_to_send);
+curl_setopt($ch, CURLOPT_POST, true);
+curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+$arr = json_decode($post_data);
+if (!empty($arr->stream)) {
+    header('Content-Type: text/event-stream');
+}
+header('Cache-Control: no-cache');
+curl_setopt($ch, CURLOPT_WRITEFUNCTION, function ($ch, $data) {
+    echo $data;
+    ob_flush();
+    flush();
+    return strlen($data);
+});
+curl_exec($ch);
+curl_close($ch);
+exit();

js/script.js

@@ -20,9 +20,9 @@ let js_code_exec_output = '';
 let original_code = '';
 let temp_safe_mode = false;
 let pre_function_text = '';
-let azure_endpoint = localStorage.getItem('azure_endpoint');
 let all_chunks = [];
 let has_chunk_error = false;
+let proxy_url =  window.location.origin + window.location.pathname + "/cors-proxy.php";
 
 // Markdown to HTML
 showdown.setFlavor('github');
@@ -45,14 +45,21 @@ let PLATFORM_DATA = {
         models: [
             "gemini-2.0-flash-exp",
             "gemini-exp-1206",
-            "learnlm-1.5-pro-experimental",
             "gemini-1.5-pro",
             "gemini-1.5-flash",
             "gemini-1.5-flash-8b"
         ],
         name: "Google",
         endpoint: 'https://generativelanguage.googleapis.com/v1beta/models/{{model}}:{{gen_mode}}?key={{api_key}}'
     },
+    deepseek: {
+        models: [
+            "deepseek-reasoner",
+            "deepseek-chat"
+        ],
+        name: "DeepSeek",
+        endpoint: "https://api.deepseek.com/chat/completions"
+    },
     anthropic: {
         models: [
             "claude-3-5-sonnet-20241022",
@@ -90,6 +97,7 @@ let PLATFORM_DATA = {
             "Meta-Llama-3.1-405B-Instruct",
             "Llama-3.2-90B-Vision-Instruct"
         ],
+        needProxy: true,
         name: "SambaNova",
         endpoint: "https://api.sambanova.ai/v1/chat/completions"
 
@@ -148,15 +156,6 @@ let PLATFORM_DATA = {
 }
 
 
-if (azure_endpoint) {
-    PLATFORM_DATA.azure = {
-        models: [
-            "gpt-4o-mini"
-        ],
-        name: "Azure",
-        endpoint: azure_endpoint
-    };
-}
 
 const language_extension = {
     "python": "py",
@@ -617,7 +616,6 @@ function toggleAiGenAnimation(do_animate = 'toggle') {
 function chat() {
     toggleAiGenAnimation(true);
     if (chosen_platform === 'google') {
-        // endpoint = "https://generativelanguage.googleapis.com/v1beta/openai/chat/completions";
         return geminiChat();
     }
     return streamChat();
@@ -1988,15 +1986,13 @@ async function streamChat(can_use_tools = true) {
         if (chosen_platform !== 'anthropic') {
             if (!cmd) {
                 if (!base64String) {
-                    // Groq vision accept no system prompt??
                     all_parts.push(system_prompt);
                 }
             }
         }
     }
 
     conversations.messages.forEach(part => {
-            //let role = part.role === 'assistant' ? 'model' : part.role;
             let cnt = part.content;
             last_role = part.role;
             last_cnt = part.content;
@@ -2147,6 +2143,8 @@ async function streamChat(can_use_tools = true) {
         return false;
     }
 
+    endpoint = getEndpoint();
+
     try {
         const response = await fetch(endpoint, requestOptions);
         if (!response.ok) {
@@ -3150,6 +3148,18 @@ function loadUserAddedPrompts(){
 loadUserAddedPrompts()
 
 
+//Checks if it is necessary to pass the request via cors-proxy.php to get rid of cors and
+// if so returns a new endpoint address
+function getEndpoint(){
+    let needProxy = PLATFORM_DATA[chosen_platform]?.needProxy ?? false;
+    let endpoint = PLATFORM_DATA[chosen_platform]?.endpoint;
+    if(needProxy){
+        return `${proxy_url}?endpoint=${endpoint}`;
+    }
+    return endpoint;
+}
+
+
 function deletePrompt(){
     let sl_prompt = document.querySelector("select[name=prompt]");
     let selectedOption = sl_prompt.options[sl_prompt.selectedIndex];
@@ -3176,8 +3186,6 @@ function deletePrompt(){
                     }
                 }
 
-
-
                 selectedOption.remove();
                 console.log(selectedOption)
                 document.querySelector("textarea.system_prompt").value = '';