"""Export CNX-Vinyl-Business-Plan-A.docx and -B.docx to PDF with LibreOffice, filling in the table of contents.

Run with LibreOffice's own Python (it ships the uno module):
    "C:/Program Files/LibreOffice/program/python.exe" export_pdf.py
A plain `soffice --convert-to pdf` leaves the Word TOC field unfilled.
"""
import uno, sys, time, subprocess, os
from pathlib import Path
HERE = Path(__file__).resolve().parent
DOCXS = [HERE.parent / f"CNX-Vinyl-Business-Plan-{p}.docx" for p in ("A", "B")]
DOCXS = [d for d in DOCXS if d.exists()]
from com.sun.star.beans import PropertyValue
def pv(n, v):
    p = PropertyValue(); p.Name = n; p.Value = v; return p
soffice = r"C:\Program Files\LibreOffice\program\soffice.exe"
proc = subprocess.Popen([soffice, "--headless", "--invisible", "--norestore", "--accept=socket,host=localhost,port=2083;urp;"])
local = uno.getComponentContext()
resolver = local.ServiceManager.createInstanceWithContext("com.sun.star.bridge.UnoUrlResolver", local)
for i in range(60):
    try:
        ctx = resolver.resolve("uno:socket,host=localhost,port=2083;urp;StarOffice.ComponentContext"); break
    except Exception:
        time.sleep(0.5)
smgr = ctx.ServiceManager
desktop = smgr.createInstanceWithContext("com.sun.star.frame.Desktop", ctx)
for DOCX in DOCXS:
    PDF = DOCX.with_suffix(".pdf")
    src = uno.systemPathToFileUrl(str(DOCX))
    doc = desktop.loadComponentFromURL(src, "_blank", 0, (pv("Hidden", True),))
    idx = doc.getDocumentIndexes()
    print(DOCX.name, "indexes", idx.getCount())
    for i in range(idx.getCount()):
        idx.getByIndex(i).update()
    doc.refresh()
    # update fields (page numbers)
    doc.getTextFields().refresh()
    for i in range(idx.getCount()):
        idx.getByIndex(i).update()
    out = uno.systemPathToFileUrl(str(PDF))
    doc.storeToURL(out, (pv("FilterName", "writer_pdf_Export"),))
    doc.close(True)
try:
    desktop.terminate()
except Exception:
    pass
time.sleep(1)
proc.kill() if proc.poll() is None else None
print("done")