Adding skeleton

app.py

@@ -1,7 +1,25 @@
 import gradio as gr
+from langchain_community.document_loaders import PyPDFLoader
 
-def greet(name):
-    return "Hello " + name + "!!"
+def summarise_pdf(pdf, progress=gr.Progress()):
 
-demo = gr.Interface(fn=greet, inputs="text", outputs="text")
-demo.launch()
+    return "Summarised", "Complete!"
+
+
+with gr.Blocks() as demo:
+
+    gr.Markdown("<H1>PDF Summariser</H1>")
+    gr.Markdown("<H3>Upload a PDF file and generate a summary</H3>")
+    gr.Markdown("<H6>This project uses a MapReduce method to split the PDF into chunks, generate summaries of each of the chunks, and reduce them into a single final summary. Documents less than 3 pages use a Stuff method to simply stuff the entire document into the context window.</H6>")
+
+    with gr.Row():
+        with gr.Column(scale=1):
+            pdf = gr.File(label="1. Upload PDF")
+            summarise_btn = gr.Button(value="3. Summarise PDF", variant="primary")
+            summary_progress = gr.Textbox(value="Not Started", label="Summary Progress")
+        with gr.Column(scale=3):
+            summary = gr.TextArea(label="Summary")
+
+    summarise_btn.click(fn=summarise_pdf, inputs=pdf, outputs=[summary, summary_progress])
+
+demo.launch()