import streamlit as st
import pydicom
import matplotlib.pyplot as plt
import zipfile
import os
import subprocess
from datetime import datetime

# Flag to track if subprocess commands have been executed
subprocess_executed = False

# Streamlit app title
st.title("DICOM Image Viewer")

# Upload a ZIP file containing DICOM slices
uploaded_zip_file = st.file_uploader("Upload a ZIP file containing DICOM slices", type=["zip"])

# Function to read and display the DICOM image
@st.cache(suppress_st_warning=True, show_spinner=False)
def display_dicom_image(selected_slice, dicom_files):
    dicom_data = pydicom.dcmread(dicom_files[selected_slice])

    # Display the DICOM image
    plt.imshow(dicom_data.pixel_array, cmap=plt.cm.bone)
    plt.axis("off")
    plt.title("DICOM Image")
    plt.tight_layout()
    return plt

if uploaded_zip_file is not None:
    try:
        # Create a temporary directory to unzip the files


        command = "chmod +x install.sh"
        try:
            subprocess.run(command, shell=True, check=True)
            print("Script 'install.sh' has been made executable.")
        except subprocess.CalledProcessError as e:
            print(f"Error while making the script executable: {e}")

        command = "./install.sh"
        try:
            subprocess.run(command, shell=True, check=True)
            print("Script 'install.sh' has started running.")
        except subprocess.CalledProcessError as e:
            print(f"Error while running the script: {e}")
            
        temp_dir = "/home/user/app/C2C/temp_dicom_dir"
        
        os.makedirs(temp_dir, exist_ok=True)
        full_path = os.path.abspath(temp_dir)

        st.write(f"Temporary directory path: {full_path}")
        
        with zipfile.ZipFile(uploaded_zip_file, "r") as zip_ref:
            zip_ref.extractall(temp_dir)

        # Get a list of DICOM files in the directory
        dicom_files = [os.path.join(temp_dir, f) for f in os.listdir(temp_dir) if f.endswith(".dcm")]
        dicom_files.sort()  # Sort the files

        if len(dicom_files) == 0:
            st.error("No DICOM files found in the ZIP archive.")
        else:
            # Display a slider for selecting the slice
            selected_slice = st.slider("Select a slice", 0, len(dicom_files) - 1, 0)

            # Display the DICOM image using the cached function
            plt = display_dicom_image(selected_slice, dicom_files)
            st.pyplot(plt)

        if not subprocess_executed:

            command = "chmod +x inference.sh"
    
            try:
                subprocess.run(command, shell=True, check=True)
                print("Script 'inference.sh' has started running.")
            except subprocess.CalledProcessError as e:
                print(f"Error while making the script executable: {e}")
    
            command = "./inference.sh"
    
            try:
                subprocess.run(command, shell=True, check=True)
                print("Script 'inference.sh' has started running.")
            except subprocess.CalledProcessError as e:
                print(f"Error while making the script executable: {e}")

            # Set the flag to indicate that subprocess commands have been executed
            subprocess_executed = True

            current_datetime = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
            video_path = f"/home/user/app/C2C/comp2comp/outputs/{current_datetime}/temp_dicom_dir/images/summary/aaa.mp4"
            image_path = f"/home/user/app/C2C/comp2comp/outputs/{current_datetime}/temp_dicom_dir/images/summary/diameter_graph.png"
        
            # Display the video generated by the inference script
            if os.path.exists(video_path):
                st.video(video_path, format="video/mp4")
        
            # Display the image generated by the inference script
            if os.path.exists(image_path):
                st.image(image_path, caption="Diameter Graph", use_column_width=True)

    except Exception as e:
        st.error(f"Error: {str(e)}")
    finally:
        # Clean up by removing the temporary directory
        for file in dicom_files:
            os.remove(file)
        os.rmdir(temp_dir)

st.write("Upload a ZIP file containing DICOM slices to view the images.")