feat: add ppt generation feat

src/ppt/graph/ppt_composer_node.py

@@ -0,0 +1,33 @@
+# Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+# SPDX-License-Identifier: MIT
+
+import logging
+import os
+import uuid
+
+from langchain.schema import HumanMessage, SystemMessage
+
+from src.config.agents import AGENT_LLM_MAP
+from src.llms.llm import get_llm_by_type
+from src.prompts.template import get_prompt_template
+
+from .state import PPTState
+
+logger = logging.getLogger(__name__)
+
+
+def ppt_composer_node(state: PPTState):
+    logger.info("Generating ppt content...")
+    model = get_llm_by_type(AGENT_LLM_MAP["ppt_composer"])
+    ppt_content = model.invoke(
+        [
+            SystemMessage(content=get_prompt_template("ppt_composer")),
+            HumanMessage(content=state["input"]),
+        ],
+    )
+    logger.info(f"ppt_content: {ppt_content}")
+    # save the ppt content in a temp file
+    temp_ppt_file_path = os.path.join(os.getcwd(), f"ppt_content_{uuid.uuid4()}.md")
+    with open(temp_ppt_file_path, "w") as f:
+        f.write(ppt_content.content)
+    return {"ppt_content": ppt_content, "ppt_file_path": temp_ppt_file_path}