"""Parse badge-reader ODS files and return structured data."""
from datetime import datetime, time
from odf.opendocument import load
from odf.table import Table, TableRow, TableCell
from odf.text import P


def _cell_text(cell) -> str:
    parts = []
    for p in cell.getElementsByType(P):
        for node in p.childNodes:
            if hasattr(node, "data"):
                parts.append(node.data)
    return "".join(parts).strip()


def _parse_time(val: str) -> str | None:
    """Return HH:MM or None. Ignores zero-times (formula placeholders)."""
    val = val.strip()
    if not val:
        return None
    for fmt in ("%H:%M:%S", "%H:%M"):
        try:
            t = datetime.strptime(val, fmt)
            hhmm = t.strftime("%H:%M")
            if hhmm == "00:00":
                return None
            return hhmm
        except ValueError:
            pass
    return None


def _parse_date(val: str) -> str | None:
    """Return YYYY-MM-DD or None."""
    val = val.strip()
    for fmt in ("%d/%m/%Y", "%Y-%m-%d"):
        try:
            return datetime.strptime(val, fmt).strftime("%Y-%m-%d")
        except ValueError:
            pass
    return None


def parse_ods(path: str) -> list[dict]:
    """Return list of pointage dicts from all sheets in the ODS file."""
    doc = load(path)
    sheets = doc.spreadsheet.getElementsByType(Table)
    records = []

    for sheet in sheets:
        rows = sheet.getElementsByType(TableRow)
        for row in rows:
            cells = row.getElementsByType(TableCell)
            if len(cells) < 5:
                continue
            date_val = _cell_text(cells[0])
            date = _parse_date(date_val)
            if not date:
                continue
            records.append({
                "date": date,
                "matin_entree": _parse_time(_cell_text(cells[1])),
                "matin_sortie": _parse_time(_cell_text(cells[2])),
                "aprem_entree": _parse_time(_cell_text(cells[3])),
                "aprem_sortie": _parse_time(_cell_text(cells[4])),
            })

    return records