Support HTTP via server_chat()

.gitignore

@@ -1,8 +1,166 @@
+# Project related
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-dist
-venv
-__pycache__
 .DS_Store
+*egg-info
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
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+.coverage.*
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+.idea/

README.md

@@ -88,6 +88,44 @@ from pychatgpt import Chat
 chat = Chat(email="email", password="password")
 chat.cli_chat()
 ```
+Start a HTTP server Session
+```python
+from pychatgpt import Chat
+
+chat = Chat(email="email", password="password")
+chat.server_chat() # host:str="127.0.0.1", port:int=8000
+```
+
+<details>
+<summary>Click to toggle HTTP requests and answers >></summary>   
+
+1. GET `http://host:port/{prompt}` returns a `JSONResponse` 
+
+```json
+{
+    "answer": "{answer}",
+    "conversation": "{conversation_id}"
+}
+```
+
+2. POST `http://host:port/` with an `application/json` body of
+```json
+{
+    "prompt": "{prompt}",
+    "conversation": "{conversation_id}" (optional)
+}
+```  
+returns a `JSONResponse`  
+
+```json
+{
+    "answer": "{answer}",
+    "conversation": "{conversation_id}"
+}
+```
+
+*Note: conversation not implemented yet*
+</details>
 
 Ask a one time question
 ```python

src/pychatgpt/main.py

@@ -15,7 +15,14 @@
 # Fancy stuff
 import colorama
 from colorama import Fore
-
+from typing import Union
+from fastapi import FastAPI, APIRouter
+from fastapi.encoders import jsonable_encoder
+from fastapi.responses import JSONResponse
+from pydantic import BaseModel
+import uvicorn
+
+app = FastAPI() # A fast api framework
 colorama.init(autoreset=True)
 
 class Options:
@@ -26,6 +33,12 @@ def __init__(self):
         self.chat_log: str or None = None
         self.id_log: str or None = None
 
+class PostItem(BaseModel):
+    prompt: str
+    conversation: Union[int, None] = None # TODO: conversation
+
+colorama.init(autoreset=True)
+# @cbv(router) # to embed api in a class
 class Chat:
     def __init__(self,
                  email: str,
@@ -40,6 +53,12 @@ def __init__(self,
         self.conversation_id = conversation_id
         self.previous_convo_id = previous_convo_id
 
+        self.router = APIRouter() # to resolve the issue of fastapi decorations
+        self.router.add_api_route("/{prompt}", self.http_get, methods=["GET"])
+        self.router.add_api_route("/", self.http_get_default, methods=["GET"])
+        self.router.add_api_route("/", self.http_post, methods=["POST"])
+        app.include_router(self.router) # manually add the router to the app, althoug not elegant
+
         self.__auth_access_token: str or None = None
         self.__auth_access_token_expiry: int or None = None
         self.__chat_history: list or None = None
@@ -224,6 +243,80 @@ def save_data(self):
             finally:
                 self.__chat_history = []
 
+    # Respond to HTTP GET requests at /
+    async def http_get_default(self) -> JSONResponse:
+        """
+        GET: "http://host:port/"
+        Returns: JSONResponse {
+            "error": "Missing query. e.g {host:port/{your_query}"
+        }
+        """
+        return jsonable_encoder({"error": "Missing query. e.g {host:port/{your_query}"})
+
+
+    # Respond to HTTP GET requests at /{prompt}
+    async def http_get(self, prompt: str) -> JSONResponse:
+        """
+        #TODO: conversation queue
+        GET: "http://host:port/{prompt}"
+        Returns: JSONResponse {
+            "answer": "{answer}",
+            "conversation": "{conversation_id}"
+        }
+        """
+        if prompt is None or len(prompt) == 0 or prompt == " ":
+            return jsonable_encoder({"error": "Missing query. e.g {host:port/{your_query}"})
+        else:
+            print(f"GET: {prompt}")
+            answer =  self.ask(prompt)
+            if answer is None:
+                print(f"{Fore.RED}>> Failed to get a response from the API.")
+                return jsonable_encoder({"error": "Failed to get a response from the API."})
+            else:
+                print(f"Chat GPT: {answer}")
+                if self.options.track:
+                    self.__chat_history.append("GET: " + prompt)
+                    self.__chat_history.append("Chat GPT: " + answer)
+                return jsonable_encoder({"answer": answer, "conversation":self.conversation_id})
+
+    # Respond to HTTP POST requests
+    async def http_post(self, request: PostItem) -> JSONResponse:
+        """
+        #TODO: conversation queue
+        POST: "http://host:port/" with a application/json {
+            "prompt": "{prompt}",
+            "conversation": "{conversation_id}" (optional)
+            }
+        Returns: JSONResponse {
+            "answer": "{answer}",
+            "conversation": "{conversation_id}"
+        }
+        """
+        prompt = request.prompt
+        if prompt is None or len(prompt) == 0 or prompt == " ":
+            return jsonable_encoder({"error": "Missing or invalid query. e.g POST {'prompt': 'your query'} to host:port"})
+        else:
+            print(f"POST: {prompt}")
+            answer =  self.ask(prompt)
+            if answer is None:
+                print(f"{Fore.RED}>> Failed to get a response from the API.")
+                return jsonable_encoder({"error": "Failed to get a response from the API."})
+            else:
+                print(f"Chat GPT: {answer}")
+                if self.options.track:
+                    self.__chat_history.append("POST: " + prompt)
+                    self.__chat_history.append("Chat GPT: " + answer)
+                return jsonable_encoder({"answer": answer, "conversation": self.conversation_id})
+
+    def server_chat(self, host:str="127.0.0.1", port:int=8000)->None:
+        """
+        Start a CLI chat session.
+        :param rep_queue:  A queue to put the prompt and response in.
+        :return:
+        """
+        print(f"{Fore.GREEN}>> Server running at {host}:{port}...")
+        uvicorn.run(app, host=host, port=port)
+
     def cli_chat(self, rep_queue: Queue or None = None):
         """
         Start a CLI chat session.

src/pychatgpt/requirements.txt

@@ -4,4 +4,6 @@ colorama~=0.4.4
 svglib~=1.4.1
 bs4~=0.0.1
 beautifulsoup4~=4.10.0
-reportlab~=3.6.12
+reportlab~=3.6.12
+fastapi~=0.88.0
+uvicorn~=0.20.0