add system prompt as parameter to ask

rplugin/python3/copilot.py

@@ -87,19 +87,12 @@ def authenticate(self):
 
         self.token = self.session.get(url, headers=headers).json()
 
-    def ask(self, prompt: str, code: str, language: str = ""):
+    def ask(self, system_prompt: str, prompt: str, code: str, language: str = ""):
         # If expired, reauthenticate
         if self.token.get("expires_at") <= round(time.time()):
             self.authenticate()
         url = "https://api.githubcopilot.com/chat/completions"
         self.chat_history.append(typings.Message(prompt, "user"))
-        system_prompt = prompts.COPILOT_INSTRUCTIONS
-        if prompt == prompts.FIX_SHORTCUT:
-            system_prompt = prompts.COPILOT_FIX
-        elif prompt == prompts.TEST_SHORTCUT:
-            system_prompt = prompts.COPILOT_TESTS
-        elif prompt == prompts.EXPLAIN_SHORTCUT:
-            system_prompt = prompts.COPILOT_EXPLAIN
         data = utilities.generate_request(
             self.chat_history, code, language, system_prompt=system_prompt
         )
@@ -141,7 +134,7 @@ 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])
+                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}")