from __future__ import annotations

import uuid
from datetime import datetime, timezone

from bom_assistant.ingestion.column_mapper import map_columns
from bom_assistant.ingestion.normalizer import normalize
from bom_assistant.ingestion.parser import parse_bom
from bom_assistant.session.models import BomSession


def build_session(content: bytes, filename: str) -> BomSession:
    raw = parse_bom(content, filename)
    mapped = map_columns(raw)
    rows = normalize(mapped)
    return BomSession(
        session_id=str(uuid.uuid4()),
        created_at=datetime.now(timezone.utc).isoformat(),
        filename=filename,
        rows=rows,
    )