added app.py wrapper for hf spaces demo

app.py

@@ -0,0 +1,78 @@
+import gradio as gr
+from hf_mixtral_agent import agent_executor
+from innovation_pathfinder_ai.source_container.container import (
+    all_sources
+)
+
+if __name__ == "__main__":
+    
+    def add_text(history, text):
+        history = history + [(text, None)]
+        return history, ""
+
+    def bot(history):
+        response = infer(history[-1][0], history)
+        sources = collect_urls(all_sources)
+        src_list = '\n'.join(sources)
+        response_w_sources = response['output']+"\n\n\n Sources: \n\n\n"+src_list
+        history[-1][1] = response_w_sources
+        return history
+
+    def infer(question, history):
+        query =  question
+        result = agent_executor.invoke(
+            {
+                "input": question,
+            }
+        )
+        return result
+
+    def vote(data: gr.LikeData):
+        if data.liked:
+            print("You upvoted this response: " + data.value)
+        else:
+            print("You downvoted this response: " + data.value)
+    
+    def collect_urls(data_list):
+        urls = []
+        for item in data_list:
+            # Check if item is a string and contains 'link:'
+            if isinstance(item, str) and 'link:' in item:
+                start = item.find('link:') + len('link: ')
+                end = item.find(',', start)
+                url = item[start:end if end != -1 else None].strip()
+                urls.append(url)
+            # Check if item is a dictionary and has 'Entry ID'
+            elif isinstance(item, dict) and 'Entry ID' in item:
+                urls.append(item['Entry ID'])
+        return urls
+
+    css="""
+    #col-container {max-width: 700px; margin-left: auto; margin-right: auto;}
+    """
+
+    title = """
+    <div style="text-align: center;max-width: 700px;">
+        <p>Hello Dave, how can I help today?<br />
+    </div>
+    """
+
+    with gr.Blocks(theme=gr.themes.Soft()) as demo:
+        with gr.Tab("Google|Wikipedia|Arxiv"):
+            with gr.Column(elem_id="col-container"):
+                gr.HTML(title)
+                with gr.Row():
+                    question = gr.Textbox(label="Question", placeholder="Type your question and hit Enter ")
+                chatbot = gr.Chatbot([], elem_id="chatbot")
+                chatbot.like(vote, None, None)
+                clear = gr.Button("Clear")
+            question.submit(add_text, [chatbot, question], [chatbot, question], queue=False).then(
+                bot, chatbot, chatbot
+            )
+            clear.click(lambda: None, None, chatbot, queue=False)
+
+    demo.queue()
+    demo.launch(debug=True)
+
+
+    x = 0 # for debugging purposes