import os
import streamlit as st

papaya_script = """
<style>
:root {
  background-color: black;
}
</style>
<script src="https://cdn.jsdelivr.net/npm/papaya-viewer@1.0.1455/release/current/standard/papaya.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/papaya-viewer@1.0.1455/release/current/standard/papaya.min.css" rel="stylesheet">
<script type="text/javascript">
    var params = [];
    params["luts"] = [{"name": "Custom", "data":[[0, 0, 0, 0], [0.5, 0, 0, 0], [1, 1, 0, 0]]}];
    params["images"] = ["{{IMAGE_FULLPATH}}","{{MASK_FULLPATH}}"];
    params["{{MASK_BASENAME}}"] = {"min": 0, "max": 1, "lut": "Custom", "alpha":0.5};
</script>
<div class="papaya" data-params="params"></div>
"""

# TODO:
# https://github.com/angelomenezes/dicom-labeling-tool/blob/main/webapp/DICOM.py
# follow above to reload data
# 
def handle_input(myimage,mymask,papaya_script):
    mydict = {}
    os.makedirs('static/tmp/',exist_ok=True)
    image_path = 'static/tmp/image.nii.gz'
    mask_path = 'static/tmp/mask.nii.gz'
    for file_path,uploaded_file in [(image_path,myimage),(mask_path,mymask)]:
        bytes_data = uploaded_file.getvalue()
        with open(file_path,'wb') as f:
            f.write(bytes_data)

    image_path = './app/static/tmp/image.nii.gz'
    mask_path = './app/static/tmp/mask.nii.gz'
    papaya_script = papaya_script.replace("{{IMAGE_FULLPATH}}",image_path)
    papaya_script = papaya_script.replace("{{MASK_FULLPATH}}",mask_path)
    papaya_script = papaya_script.replace("{{MASK_BASENAME}}","mask.nii.gz")

    st.components.v1.html(papaya_script,height=600,width=800)

def main():
    
    st.subheader("papaya-image-viewer")
    myimage = st.file_uploader(
        "Upload your image nifti file", accept_multiple_files=False)
    mymask = st.file_uploader(
        "Upload your mask nifti file here and click on 'Render'", accept_multiple_files=False)
    if st.button("Render"):
        with st.spinner("Processing"):
            handle_input(myimage,mymask,papaya_script)


if __name__ == '__main__':
    main()


# papaya_script = papaya_script.replace("{{IMAGE_FULLPATH}}","./app/static/promis12-test-Case00.nii.gz")
# papaya_script = papaya_script.replace("{{MASK_FULLPATH}}","./app/static/promis12-test-Case00-mask.nii.gz")
# papaya_script = papaya_script.replace("{{MASK_BASENAME}}","promis12-test-Case00-mask.nii.gz")