"""
note_payload.py
Version: 1.4.2
Description:
  Builds the payload for a *note* document destined for the Qdrant "notes" collection.
  - Defensive against both dict-like and attribute-like "ParsedNote" inputs.
  - Accepts extra/legacy arguments via *args / **kwargs (e.g., vault_root, type_defaults).
  - Ensures "retriever_weight" is always present in the payload (float), resolved as:
      kwarg retriever_weight > frontmatter.retriever_weight > frontmatter.retriever.weight >
      type_defaults[type].retriever_weight > 1.0
  - Preserves common metadata fields expected downstream.

Public API:
  make_note_payload(parsed_note, *_, retriever_weight=None, vault_root=None, type_defaults=None, **__)
"""

from typing import Any, Dict, Optional

def _as_dict(obj: Any) -> Dict[str, Any]:
    if isinstance(obj, dict):
        return obj
    # Try common attribute names to build a dict view
    out = {}
    for key in (
        "frontmatter", "fm", "meta",
        "note_id", "id",
        "title", "type", "tags", "aliases",
        "created", "updated", "date",
        "abs_path", "path", "rel_path",
    ):
        if hasattr(obj, key):
            out[key] = getattr(obj, key)
    return out

def _get(obj: Any, *keys: str, default: Any=None):
    """Get first existing key/attribute from obj."""
    if isinstance(obj, dict):
        for k in keys:
            if k in obj:
                return obj[k]
        return default
    # attribute access
    for k in keys:
        if hasattr(obj, k):
            return getattr(obj, k)
    return default

def _as_list(val):
    if val is None:
        return None
    if isinstance(val, (list, tuple)):
        return list(val)
    if isinstance(val, str):
        return [val]
    try:
        return list(val)  # best-effort
    except Exception:
        return [val]

def _coerce_float(val: Any, default: float) -> float:
    if val is None:
        return float(default)
    try:
        return float(val)
    except Exception:
        return float(default)

def _clean(d: Dict[str, Any]) -> Dict[str, Any]:
    return {k: v for k, v in d.items() if v is not None}

def make_note_payload(
    parsed_note: Any,
    *_,  # ignore legacy extra positional args for backward compatibility
    retriever_weight: Optional[float] = None,
    vault_root: Optional[str] = None,
    type_defaults: Optional[Dict[str, Dict[str, Any]]] = None,
    **__,  # ignore any unexpected kwargs
) -> Dict[str, Any]:
    nd = _as_dict(parsed_note)
    fm = _get(nd, "frontmatter", "fm", "meta", default={}) or {}

    note_id = _get(nd, "note_id", "id") or fm.get("id")
    title = _get(nd, "title") or fm.get("title")
    ntype = _get(nd, "type") or fm.get("type") or "concept"

    # Path handling
    abs_path = _get(nd, "abs_path", "path")
    rel_path = _get(nd, "rel_path")
    if vault_root and abs_path and not rel_path:
        try:
            from pathlib import Path
            rel_path = str(Path(abs_path).resolve().relative_to(Path(vault_root).resolve()))
        except Exception:
            rel_path = _get(nd, "path") or abs_path

    # Tags / aliases
    tags = _as_list(_get(nd, "tags") or fm.get("tags"))
    aliases = _as_list(_get(nd, "aliases") or fm.get("aliases"))

    # Created/Updated
    created = _get(nd, "created", "date") or fm.get("created") or fm.get("date")
    updated = _get(nd, "updated") or fm.get("updated")

    # Chunk profile (effective)
    chunk_profile = fm.get("chunk_profile")
    if not chunk_profile and type_defaults and ntype in type_defaults:
        chunk_profile = type_defaults[ntype].get("chunk_profile")

    # Retriever weight resolution (ensures it is present)
    if retriever_weight is None:
        retriever_weight = (
            fm.get("retriever_weight")
            or (fm.get("retriever", {}) or {}).get("weight")
        )
        if retriever_weight is None and type_defaults and ntype in type_defaults:
            retriever_weight = type_defaults[ntype].get("retriever_weight")

    retriever_weight = _coerce_float(retriever_weight, default=1.0)

    payload = _clean({
        "note_id": note_id,
        "id": note_id,  # keep both, many downstream tools expect 'id'
        "title": title,
        "type": ntype,
        "tags": tags,
        "aliases": aliases,
        "created": created,
        "updated": updated,
        "path": rel_path or abs_path,
        "chunk_profile": chunk_profile,
        "retriever_weight": retriever_weight,
    })
    return payload