Update app.py

app.py

@@ -2,14 +2,22 @@ import gradio as gr
 def hide_message(reg,sec):
     out = reg + " " + ''.join(chr(0xE0000 + ord(ch)) for ch in sec)
     return out
-
+def decode_message(inp):
+    return ''.join(chr(ord(ch) - 0xE0000) if 0xE0000 <= ord(ch) <= 0x10FFFF else chr(ord(ch)) for ch in inp)
 
 with gr.Blocks() as app:
-    with gr.Row():
-        with gr.Column():
-            reg = gr.Textbox(label="Visible String")
-            sec = gr.Textbox(label="Secret Message")
-        btn=gr.Button()
-    outp=gr.Textbox(label="Output Message")
+    with gr.Tab("Hide"):
+        with gr.Row():
+            with gr.Column():
+                reg = gr.Textbox(label="Visible String")
+                sec = gr.Textbox(label="Secret Message")
+            btn=gr.Button("Hide")
+        outp=gr.Textbox(label="Output Message")
+    with gr.Tab("Decode"):
+        with gr.Row():
+            inp_mes=gr.Textbox(label="Hidden Message",lines=4)
+            dec_btn=gr.Button("Decode")
+        out_d=gr.Textbox(label="Decoded Message")
+    dec_btn.click(decode_message,inp_mes,out_d)
     btn.click(hide_message,[reg,sec],outp)
 app.launch()