import uno
from com.sun.star.beans import PropertyValue
from com.sun.star.uno import RuntimeException

def connect_to_libreoffice(port=2002):
    localContext = uno.getComponentContext()
    resolver = localContext.ServiceManager.createInstanceWithContext(
        "com.sun.star.bridge.UnoUrlResolver", localContext)
    try:
        context = resolver.resolve(f"uno:socket,host=localhost,port={port};urp;StarOffice.ComponentContext")
        return context.ServiceManager.createInstanceWithContext("com.sun.star.frame.Desktop", context)
    except RuntimeException:
        raise Exception("Make sure LibreOffice is running with a listening port (e.g., soffice --accept=\"socket,port=2002;urp;\" --norestore --nologo --nodefault)")

def export_to_pdf(doc, file_name):
    pdf_export_properties = tuple([
        PropertyValue(Name="FilterName", Value="writer_pdf_Export")
    ])
    doc.storeToURL(f"file:///{file_name}", pdf_export_properties)

def replace_text(doc, old_text, new_text):
    replaceable = doc.createReplaceDescriptor()
    replaceable.setSearchString(old_text)
    replaceable.setReplaceString(new_text)

    doc.replaceAll(replaceable)



def main(start_counter, num_documents, document_path):
    desktop = connect_to_libreoffice()

    for i in range(num_documents):
        counter = start_counter + i
        load_props = PropertyValue(Name="Hidden", Value=True),
        doc = desktop.loadComponentFromURL(f"file:///{document_path}", "_blank", 0, load_props)

        replace_text(doc, "counter", str(counter))

        file_name = f"/home/tobru/Documents/Feuerwehr/Stab/Fourier/EinsatzrapporteLeer/Einsatzrapport2024-{counter}.pdf"
        export_to_pdf(doc, file_name)
        doc.dispose()

if __name__ == "__main__":
    document_path = "/home/tobru/Documents/Feuerwehr/Stab/Fourier/FW-Einsatzrapport FWU.odt"
    start_counter = 1
    num_documents = 100

    # Start libreoffice with:
    # soffice --accept="socket,port=2002;urp;" --norestore --nologo --nodefault
    main(start_counter, num_documents, document_path)

    # after generation, run:
    # pdftk $(ls -v *.pdf) cat output Einsatzrapporte2024.pdf