Add fix for self-hosted HF models (#167)

* add fix for self-hosted HF models

* Update src/agentlab/llm/huggingface_utils.py

* Update huggingface_utils.py

* updating test

---------

Co-authored-by: Thibault LSDC <[email protected]>
Co-authored-by: ThibaultLSDC <[email protected]>

Author: jardinetsouffleton

src/agentlab/llm/huggingface_utils.py

@@ -6,6 +6,7 @@
 from transformers import AutoTokenizer, GPT2TokenizerFast
 
 from agentlab.llm.base_api import AbstractChatModel
+from agentlab.llm.llm_utils import Discussion
 from agentlab.llm.prompt_templates import PromptTemplate, get_prompt_template
 
 
@@ -59,6 +60,8 @@ def __call__(
         if self.tokenizer:
             # messages_formated = _convert_messages_to_dict(messages) ## ?
             try:
+                if isinstance(messages, Discussion):
+                    messages.merge()
                 prompt = self.tokenizer.apply_chat_template(messages, tokenize=False)
             except Exception as e:
                 if "Conversation roles must alternate" in str(e):

src/agentlab/llm/llm_utils.py

@@ -386,6 +386,8 @@ def merge(self):
             else:
                 new_content.append(elem)
         self["content"] = new_content
+        if len(self["content"]) == 1:
+            self["content"] = self["content"][0]["text"]
 
 
 class SystemMessage(BaseMessage):

tests/llm/test_llm_utils.py

@@ -251,8 +251,7 @@ def test_message_merge_only_text():
     ]
     message = llm_utils.BaseMessage(role="system", content=content)
     message.merge()
-    assert len(message["content"]) == 1
-    assert message["content"][0]["text"] == "Hello, world!\nThis is a test."
+    assert message["content"] == "Hello, world!\nThis is a test."
 
 
 def test_message_merge_text_image():