Create app.py

app.py

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+import gradio as gr
+from pydantic import BaseModel
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain_groq import ChatGroq
+from langchain_tavily import TavilySearch
+from langgraph.prebuilt import create_react_agent
+from langgraph.checkpoint.memory import InMemorySaver
+import uuid
+
+# Set up LLM
+llm = ChatGroq(
+    temperature=0,
+    groq_api_key='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',
+    model_name="llama-3.3-70b-versatile"
+)
+
+# Define tools
+search_tool = TavilySearch(
+    max_results=5,
+    tavily_api_key='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'
+)
+
+tools = [search_tool]
+
+# Define system prompt
+system_prompt = """
+You are a professional content strategist and scriptwriter for Instagram Reels.
+Your job is to help content creators generate high-performing short-form video scripts (Reels) based on a theme or rough idea they provide.
+
+--------------------------------------
+
+INPUT FROM USER:
+Theme or Idea: {text}
+
+--------------------------------------
+
+Instructions:
+1. Understand the topic and tone from the input. If the input is a vague idea, clarify the theme internally before writing.
+2. The target audience is Instagram users (18–35), who enjoy short, engaging, and value-packed content.
+3. Keep the script short, clear, and suitable for a 30–60 second video.
+4. The tone should be friendly, motivational, and relatable (unless specified otherwise).
+5. Use emojis in the caption and keep hashtags relevant to the theme.
+
+--------------------------------------
+
+OUTPUT FORMAT:
+- Hook: A scroll-stopping first line (1 sentence only).
+- 3-Point Structure or Mini Story:
+1. [Point or part 1]
+2. [Point or part 2]
+3. [Point or part 3]
+- Caption: A 1–2 sentence engaging caption.
+- Hashtags: Include 3–5 relevant hashtags.
+- Call-to-Action: End with a line like “Follow for more tips”, “Save this”, etc.
+
+Only respond with the script in this format. Do not explain your reasoning.
+
+--------------------------------------
+"""
+
+# Create checkpoint
+checkpointer = InMemorySaver()
+
+# Create LangGraph agent
+agent = create_react_agent(
+    model=llm,
+    tools=tools,
+    prompt=system_prompt,
+    checkpointer=checkpointer
+)
+
+# Script generation function for Gradio
+def generate_script(text: str):
+    try:
+        thread_id = str(uuid.uuid4())  # Generate a unique thread ID
+        config = {"configurable": {"thread_id": thread_id}}
+        response = agent.invoke(
+            {"messages": [{"role": "user", "content": text}]},
+            config
+        )
+        return response['messages'][-1].content
+    except Exception as e:
+        return f"Error: {str(e)}"
+
+# Gradio UI
+interface = gr.Interface(
+    fn=generate_script,
+    inputs=gr.Textbox(lines=3, placeholder="Enter your Reel idea or theme here..."),
+    outputs=gr.Textbox(label="Generated Reel Script"),
+    title="Instagram Reel Script Generator 🎬",
+    description="Enter your idea or theme and get a full short-form video script tailored for Instagram Reels."
+)
+
+if __name__ == "__main__":
+    interface.launch(share=True)