feat: New Command so that CopilotChat reads from current in-focus buffer when answering questions (#67)

* Adding a chat to read the current infocus buffer

* Adding the Readmme

* chore: fix the usage for new command

---------

Co-authored-by: Dung Duc Huynh (Kaka) <870029+jellydn@users.noreply.github.com>

Author: AdrielVelazquez

README.md

@@ -264,6 +264,12 @@ For further reference, you can view @jellydn's [configuration](https://github.co
 
 [![Toggle](https://i.gyazo.com/db5af9e5d88cd2fd09f58968914fa521.gif)](https://gyazo.com/db5af9e5d88cd2fd09f58968914fa521)
 
+### Chat with Copilot with all contents of InFocus buffer
+
+1. Run the command `:CopilotChatBuffer` and type your prompt. For example, `What does this code do?`
+2. Press `Enter` to send your question to Github Copilot.
+3. Copilot will pull the content of the infocus buffer and chat with you.
+
 ## Tips
 
 ### Integration with `telescope.nvim`

rplugin/python3/CopilotChat/copilot.py

@@ -79,7 +79,8 @@ def poll_auth(self, device_code: str) -> bool:
     def authenticate(self):
         if self.github_token is None:
             raise Exception("No token found")
-        self.vscode_sessionid = str(uuid.uuid4()) + str(round(time.time() * 1000))
+        self.vscode_sessionid = str(
+            uuid.uuid4()) + str(round(time.time() * 1000))
         url = "https://api.github.com/copilot_internal/v2/token"
         headers = {
             "authorization": f"token {self.github_token}",
@@ -105,7 +106,7 @@ def ask(
         if not self.token:
             self.authenticate()
         # If expired, reauthenticate
-        if self.token.get("expires_at") <= round(time.time()):
+        if self.token.get("expires_at", 0) <= round(time.time()):
             self.authenticate()
 
         if not system_prompt:
@@ -147,7 +148,8 @@ def ask(
 
             raise Exception(
                 error_messages.get(
-                    response.status_code, f"Unknown error: {response.status_code}"
+                    response.status_code, f"Unknown error: {
+                        response.status_code}"
                 )
             )
         for line in response.iter_lines():
@@ -183,8 +185,9 @@ def _get_embeddings(self, inputs: list[typings.FileExtract]):
             if i + 18 > len(inputs):
                 data = utilities.generate_embedding_request(inputs[i:])
             else:
-                data = utilities.generate_embedding_request(inputs[i : i + 18])
-            response = self.session.post(url, headers=self._headers(), json=data).json()
+                data = utilities.generate_embedding_request(inputs[i: i + 18])
+            response = self.session.post(
+                url, headers=self._headers(), json=data).json()
             if "data" not in response:
                 raise Exception(f"Error fetching embeddings: {response}")
             for embedding in response["data"]:
@@ -217,7 +220,8 @@ def main():
     copilot = Copilot(token)
     if copilot.github_token is None:
         req = copilot.request_auth()
-        print("Please visit", req["verification_uri"], "and enter", req["user_code"])
+        print("Please visit", req["verification_uri"],
+              "and enter", req["user_code"])
         while not copilot.poll_auth(req["device_code"]):
             time.sleep(req["interval"])
         print("Successfully authenticated")

rplugin/python3/CopilotChat/copilot_plugin.py

@@ -10,7 +10,8 @@
 @pynvim.plugin
 class CopilotPlugin(object):
     def __init__(self, nvim: pynvim.Nvim):
-        self.nvim: MyNvim = MyNvim(nvim, PLUGIN_MAPPING_CMD, PLUGIN_AUTOCMD_CMD)
+        self.nvim: MyNvim = MyNvim(
+            nvim, PLUGIN_MAPPING_CMD, PLUGIN_AUTOCMD_CMD)
         self.vsplit_chat_handler = None
         self.inplace_chat_handler = None
 
@@ -24,6 +25,18 @@ def copilot_chat_toggle_cmd(self):
         if self.vsplit_chat_handler:
             self.vsplit_chat_handler.toggle_vsplit()
 
+    @pynvim.command("CopilotChatBuffer", nargs="1")
+    def copilot_agent_buffer_cmd(self, args: list[str]):
+        self.init_vsplit_chat_handler()
+        current_buffer = self.nvim.current.buffer
+        lines = current_buffer[:]
+        # Get code from the current infocus buffer
+        code = "\n".join(lines)
+        if self.vsplit_chat_handler:
+            file_type = self.nvim.current.buffer.options["filetype"]
+            self.vsplit_chat_handler.vsplit()
+            self.vsplit_chat_handler.chat(args[0], file_type, code)
+
     @pynvim.command("CopilotChat", nargs="1")
     def copilot_agent_cmd(self, args: list[str]):
         self.init_vsplit_chat_handler()
@@ -45,7 +58,7 @@ def copilot_agent_visual_cmd(self, args: list[str], range: list[int]):
         self.init_vsplit_chat_handler()
         if self.vsplit_chat_handler:
             file_type = self.nvim.current.buffer.options["filetype"]
-            code_lines = self.nvim.current.buffer[range[0] - 1 : range[1]]
+            code_lines = self.nvim.current.buffer[range[0] - 1: range[1]]
             code = "\n".join(code_lines)
             self.vsplit_chat_handler.vsplit()
             self.vsplit_chat_handler.chat(args[0], file_type, code)
@@ -70,7 +83,8 @@ def inplace_cmd(self, args: list[str], range: list[int]):
         self.init_inplace_chat_handler()
         if self.inplace_chat_handler:
             file_type = self.nvim.current.buffer.options["filetype"]
-            code_lines = self.nvim.current.buffer[range[0] - 1 : range[1]]
+            code_lines = self.nvim.current.buffer[range[0] - 1: range[1]]
             code = "\n".join(code_lines)
             user_buffer = self.nvim.current.buffer
-            self.inplace_chat_handler.mount(code, file_type, range, user_buffer)
+            self.inplace_chat_handler.mount(
+                code, file_type, range, user_buffer)