from pypylon import pylon
import time
import sys

try:
    # Get the Transport Layer Factory
    tl_factory = pylon.TlFactory.GetInstance()
    devices = tl_factory.EnumerateDevices()
    
    if not devices:
        print("No cameras found!")
        sys.exit(1)

    print(f"Found {len(devices)} cameras. Checking Camera 1...")
    
    # Connect to first camera
    cam = pylon.InstantCamera(tl_factory.CreateDevice(devices[0]))
    cam.Open()
    
    # 1. Reset to Defaults
    print("Reseting to Defaults...")
    cam.UserSetSelector.Value = "Default"
    cam.UserSetLoad.Execute()
    
    # 2. Enable Auto Exposure/Gain
    print("Enabling Auto Exposure & Gain...")
    cam.ExposureAuto.Value = "Continuous"
    cam.GainAuto.Value = "Continuous"
    
    # 3. Wait for it to settle (Camera adjusts to light)
    print("Waiting 3 seconds for auto-adjustment...")
    for i in range(3):
        print(f"{3-i}...")
        time.sleep(1)
        
    # 4. READ VALUES
    current_exposure = cam.ExposureTime.GetValue() # In Microseconds (us)
    current_fps_readout = cam.ResultingFrameRate.GetValue()
    
    print("-" * 30)
    print(f"REPORT FOR SERIAL: {cam.GetDeviceInfo().GetSerialNumber()}")
    print("-" * 30)
    print(f"Current Exposure Time: {current_exposure:.1f} us ({current_exposure/1000:.1f} ms)")
    print(f"Theoretical Max FPS:   {1000000 / current_exposure:.1f} FPS")
    print(f"Camera Internal FPS:   {current_fps_readout:.1f} FPS")
    print("-" * 30)
    
    if current_exposure > 33000:
        print("⚠️ PROBLEM FOUND: Exposure is > 33ms.")
        print("   This physically prevents the camera from reaching 30 FPS.")
        print("   Solution: Add more light or limit AutoExposureUpperLimit.")
    else:
        print("✅ Exposure looks fast enough for 30 FPS.")
    
    cam.Close()

except Exception as e:
    print(f"Error: {e}")