Upload 2 files

app.py

@@ -1,24 +1,49 @@
 
+import time
 import gradio as gr
 
 MAX_QUEUE_SIZE = 3
 
+def get_sorted_queue(queue_state):
+    if queue_state is None:
+        return []
+    # Sort by age descending; if ages equal, keep original order by queue number
+    return sorted(queue_state, key=lambda p: (-p["Age"], p["Queue No."]))
+
 def add_to_queue(name, age, queue_state):
     if queue_state is None:
         queue_state = []
 
     if not name:
-        return ("Please enter your name.", queue_state, queue_state)
+        return (
+            "Please enter your name.",
+            queue_state,
+            get_sorted_queue(queue_state),
+            -1,
+            "Waiting for people to join the queue."
+        )
 
     try:
         age = int(age)
         if age <= 0:
             raise ValueError
     except Exception:
-        return ("Please enter a valid positive age.", queue_state, queue_state)
+        return (
+            "Please enter a valid positive age.",
+            queue_state,
+            get_sorted_queue(queue_state),
+            -1,
+            "Waiting for people to join the queue."
+        )
 
     if len(queue_state) >= MAX_QUEUE_SIZE:
-        return ("Queue is full. Only 3 people are allowed.", queue_state, queue_state)
+        return (
+            "Queue is full. Only 3 people are allowed.",
+            queue_state,
+            get_sorted_queue(queue_state),
+            -1,
+            "Queue is full. No more people can join."
+        )
 
     queue_number = len(queue_state) + 1
     person = {
@@ -29,28 +54,92 @@ def add_to_queue(name, age, queue_state):
     queue_state.append(person)
 
     message = f"Welcome, {name}! Your queue number is {queue_number}."
-    return message, queue_state, queue_state
+    display_queue = get_sorted_queue(queue_state)
+
+    return (
+        message,
+        queue_state,
+        display_queue,
+        -1,
+        "Queue updated. Press 'Start / Next' to call the next person."
+    )
 
 def reset_queue():
-    return "Queue has been reset.", [], []
+    return (
+        "Queue has been reset.",
+        [],
+        [],
+        -1,
+        "Waiting for people to join the queue."
+    )
+
+def serve_next(queue_state, service_index):
+    if not queue_state:
+        return (
+            "No one in the queue yet.",
+            -1,
+            [],
+            "Waiting for people to join the queue."
+        )
+
+    display_queue = get_sorted_queue(queue_state)
+
+    if service_index is None or service_index < 0:
+        idx = 0
+    else:
+        idx = service_index + 1
+
+    if idx >= len(display_queue):
+        return (
+            "All people have been served.",
+            service_index,
+            display_queue,
+            "Queue completed."
+        )
+
+    person = display_queue[idx]
+
+    # Simulate a 10-second service time
+    time.sleep(10)
+
+    now_serving_msg = (
+        f"Now serving: Queue No. {person['Queue No.']} - "
+        f"{person['Name']} (Age {person['Age']})"
+    )
+    status_msg = "Next person has been called."
+
+    return (
+        now_serving_msg,
+        idx,
+        display_queue,
+        status_msg
+    )
 
 with gr.Blocks() as demo:
-    gr.Markdown("# Simple Queue System (First Come, First Served)")
-    gr.Markdown("Enter your name and age. Only 3 people can join the queue.")
+    gr.Markdown("# Smart Queue System (Older First)")
+    gr.Markdown(
+        "Enter your name and age. Up to 3 people can join the queue. "
+        "Older people are served first. Each turn takes about 10 seconds."
+    )
 
     queue_state = gr.State([])
+    service_index = gr.State(-1)
 
     with gr.Row():
         name_input = gr.Textbox(label="Name")
         age_input = gr.Number(label="Age", precision=0)
 
-    submit_btn = gr.Button("Join Queue")
-    reset_btn = gr.Button("Reset Queue")
+    with gr.Row():
+        submit_btn = gr.Button("Join Queue")
+        reset_btn = gr.Button("Reset Queue")
+        next_btn = gr.Button("Start / Next")
 
     status_output = gr.Textbox(label="Status", interactive=False)
+    now_serving_output = gr.Textbox(label="Now Serving", interactive=False)
+
     queue_table = gr.Dataframe(
         headers=["Queue No.", "Name", "Age"],
-        label="Current Queue",
+        label="Current Queue (sorted, older first)",
         datatype=["number", "str", "number"],
         wrap=True
     )
@@ -58,13 +147,36 @@ with gr.Blocks() as demo:
     submit_btn.click(
         fn=add_to_queue,
         inputs=[name_input, age_input, queue_state],
-        outputs=[status_output, queue_state, queue_table]
+        outputs=[
+            status_output,
+            queue_state,
+            queue_table,
+            service_index,
+            now_serving_output
+        ]
     )
 
     reset_btn.click(
         fn=reset_queue,
         inputs=None,
-        outputs=[status_output, queue_state, queue_table]
+        outputs=[
+            status_output,
+            queue_state,
+            queue_table,
+            service_index,
+            now_serving_output
+        ]
+    )
+
+    next_btn.click(
+        fn=serve_next,
+        inputs=[queue_state, service_index],
+        outputs=[
+            now_serving_output,
+            service_index,
+            queue_table,
+            status_output
+        ]
     )
 
 if __name__ == "__main__":