Create app.py

app.py

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+import gradio as gr
+import subprocess
+import os
+import time
+
+# Directories
+COBOL_DIR = "cobol"
+DATA_DIR = "data"
+BIN_DIR = "cobol/bin"
+
+# Ensure bin directory exists
+os.makedirs(BIN_DIR, exist_ok=True)
+
+def compile_cobol():
+    print("🔍 Checking for existing compiled binaries...")
+    programs = ['account', 'loan', 'interest']
+    all_compiled = True
+    for prog in programs:
+        if not os.path.exists(f"{BIN_DIR}/{prog}"):
+            all_compiled = False
+            break
+
+    if all_compiled:
+        print("✅ All COBOL binaries already compiled.")
+        return
+
+    print("⚙️ Compiling COBOL programs...")
+
+    # Install GnuCOBOL if needed
+    try:
+        subprocess.run(["cobc", "--version"], capture_output=True, check=True)
+    except FileNotFoundError:
+        print("📦 Installing GNU COBOL...")
+        subprocess.run(["apt-get", "update"], check=True)
+        subprocess.run(["apt-get", "install", "-y", "gnucobol4"], check=True)
+
+    # Compile each program
+    for prog in programs:
+        cbl_file = f"{COBOL_DIR}/{prog}.cbl"
+        print(f"🧾 Compiling {prog} from {cbl_file}")
+        subprocess.run(["cobc", "-x", cbl_file, "-o", f"{BIN_DIR}/{prog}"], check=True)
+        print(f"✅ Compiled {prog}")
+
+    print("🎉 All COBOL programs compiled successfully!")
+
+# Functions to call compiled COBOL binaries
+def get_balance(account_number):
+    result = subprocess.run([f"{BIN_DIR}/account", str(account_number)],
+                            capture_output=True,
+                            text=True)
+    return result.stdout or "Account not found"
+
+def check_loan_status(account_number):
+    result = subprocess.run([f"{BIN_DIR}/loan", str(account_number)],
+                            capture_output=True,
+                            text=True)
+    return result.stdout or "Loan not found"
+
+def calculate_interest(principal, rate, time):
+    input_data = f"{principal}\n{rate}\n{time}\n"
+    result = subprocess.run([f"{BIN_DIR}/interest"],
+                            input=input_data,
+                            capture_output=True,
+                            text=True)
+    return result.stdout or "Error calculating interest"
+
+# Start compilation on startup
+with gr.Blocks(title="Banking System") as demo:
+    gr.Markdown("# 💰 COBOL Banking System\nRun in-browser using Gradio + HF Spaces")
+    
+    with gr.Tab("Account Balance"):
+        acc_input = gr.Number(label="Enter Account Number")
+        acc_output = gr.Textbox(label="Balance Info")
+        acc_btn = gr.Button("Check Balance")
+        acc_btn.click(fn=get_balance, inputs=acc_input, outputs=acc_output)
+
+    with gr.Tab("Loan Status"):
+        loan_input = gr.Number(label="Enter Account Number")
+        loan_output = gr.Textbox(label="Loan Info")
+        loan_btn = gr.Button("Check Loan")
+        loan_btn.click(fn=check_loan_status, inputs=loan_input, outputs=loan_output)
+
+    with gr.Tab("Interest Calculator"):
+        prin = gr.Number(label="Principal Amount")
+        rt = gr.Number(label="Rate (%)")
+        tm = gr.Number(label="Time (years)")
+        int_output = gr.Textbox(label="Result")
+        int_btn = gr.Button("Calculate Interest")
+        int_btn.click(fn=calculate_interest, inputs=[prin, rt, tm], outputs=int_output)
+
+if __name__ == "__main__":
+    compile_cobol()
+    demo.launch()