From 0c4e5e5127f91c6789da8dbfbcbfee63d7a578a3 Mon Sep 17 00:00:00 2001
From: Heiner Lohaus <hlohaus@users.noreply.github.com>
Date: Thu, 16 Nov 2023 16:56:23 +0100
Subject: Fix Phind and PerplexityAi - GPT-4 Providers Fix MyShell Provider
 Refactor Provider __init__ Add ChatAnywhere Provider Update models list

---
 g4f/Provider/PerplexityAi.py | 121 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 g4f/Provider/PerplexityAi.py

(limited to 'g4f/Provider/PerplexityAi.py')

diff --git a/g4f/Provider/PerplexityAi.py b/g4f/Provider/PerplexityAi.py
new file mode 100644
index 00000000..8bf83b6a
--- /dev/null
+++ b/g4f/Provider/PerplexityAi.py
@@ -0,0 +1,121 @@
+from __future__ import annotations
+
+import time
+try:
+    from selenium.webdriver.remote.webdriver import WebDriver
+except ImportError:
+    class WebDriver():
+        pass
+
+from ..typing import CreateResult, Messages
+from .base_provider import BaseProvider
+from .helper import format_prompt, get_browser
+
+class PerplexityAi(BaseProvider):
+    url = "https://www.perplexity.ai"
+    working = True
+    supports_gpt_4 = True
+    supports_stream = True
+
+    @classmethod
+    def create_completion(
+        cls,
+        model: str,
+        messages: Messages,
+        stream: bool,
+        proxy: str = None,
+        timeout: int = 120,
+        browser: WebDriver = None,
+        copilot: bool = False,
+        display: bool = True,
+        **kwargs
+    ) -> CreateResult:
+        from selenium.webdriver.common.by import By
+        from selenium.webdriver.support.ui import WebDriverWait
+        from selenium.webdriver.support import expected_conditions as EC
+
+        if browser:
+            driver = browser
+        else:
+            if display:
+                driver, display = get_browser("", True, proxy)
+            else:
+                driver = get_browser("", False, proxy)
+
+        prompt = format_prompt(messages)
+
+        driver.get(f"{cls.url}/")
+        wait = WebDriverWait(driver, timeout)
+
+        script = """
+window._message = window._last_message = "";
+window._message_finished = false;
+const _socket_send = WebSocket.prototype.send;
+WebSocket.prototype.send = function(...args) {
+    if (!window.socket_onmessage) {
+        window._socket_onmessage = this;
+        this.addEventListener("message", (event) => {
+            if (event.data.startsWith("42")) {
+                let data = JSON.parse(event.data.substring(2));
+                if (data[0] =="query_progress" || data[0] == "query_answered") {
+                    let content = JSON.parse(data[1]["text"]);
+                    if (data[1]["mode"] == "copilot") {
+                        content = content[content.length-1]["content"]["answer"];
+                        content = JSON.parse(content);
+                    }
+                    window._message = content["answer"];
+                    window._message_finished = data[0] == "query_answered";
+                    window._web_results = content["web_results"];
+                }
+            }
+        });
+    }
+    return _socket_send.call(this, ...args);
+};
+"""
+        driver.execute_script(script)
+
+        # Page loaded?
+        wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "textarea[placeholder='Ask anything...']")))
+
+        if copilot:
+            try:
+                driver.find_element(By.CSS_SELECTOR, "img[alt='User avatar']")
+                driver.find_element(By.CSS_SELECTOR, "button[data-testid='copilot-toggle']").click()
+            except:
+                pass
+
+        # Enter question
+        driver.find_element(By.CSS_SELECTOR, "textarea[placeholder='Ask anything...']").send_keys(prompt)
+        # Submit question
+        driver.find_element(By.CSS_SELECTOR, "button.bg-super svg[data-icon='arrow-right']").click()
+
+        try:
+            script = """
+if(window._message && window._message != window._last_message) {
+    try {
+        return window._message.substring(window._last_message.length);
+    } finally {
+        window._last_message = window._message;
+    }
+} else if(window._message_finished) {
+    return null;
+} else {
+    return '';
+}
+"""
+            while True:
+                chunk = driver.execute_script(script)
+                if chunk:
+                    yield chunk
+                elif chunk != "":
+                    break
+                else:
+                    time.sleep(0.1)
+        finally:
+            driver.close()
+            if not browser:
+                time.sleep(0.1)
+                driver.quit()
+            if display:
+                display.stop()
\ No newline at end of file
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