# note_payload.py
"""
Mindnet - Note Payload Builder
Version: 1.4.3
Beschreibung:
- Robust gegenüber alten/neuen Aufrufsignaturen (toleriert *args, **kwargs).
- Liest Typ-Defaults aus ./config/config.yaml oder ./config/types.yaml.
- Setzt in mindnet_notes u.a.:
  - retriever_weight (Frontmatter > Typ-Defaults > ENV > 1.0)
  - chunk_profile   (Frontmatter > Typ-Defaults > ENV > "medium")
  - edge_defaults   (Frontmatter > Typ-Defaults > [])
  - path, type, title, note_id, tags, created/modified/date (falls vorhanden)
- Garantiert JSON-serialisierbare Payloads.
"""

from __future__ import annotations
from typing import Any, Dict, Optional
import os
import json
import pathlib
import yaml


def _as_dict(note: Any) -> Dict[str, Any]:
    if isinstance(note, dict):
        return note
    d: Dict[str, Any] = {}
    for attr in (
        "id",
        "note_id",
        "title",
        "path",
        "frontmatter",
        "meta",
        "body",
        "text",
        "type",
        "created",
        "modified",
        "chunks",
        "tags",
    ):
        if hasattr(note, attr):
            d[attr] = getattr(note, attr)
    # manche Parser nutzen "metadata" statt "frontmatter"
    if "frontmatter" not in d and hasattr(note, "metadata"):
        d["frontmatter"] = getattr(note, "metadata")
    return d


def _load_types_config(explicit: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
    if isinstance(explicit, dict):
        return explicit
    for rel in ("config/config.yaml", "config/types.yaml"):
        p = pathlib.Path(rel)
        if p.exists():
            with p.open("r", encoding="utf-8") as f:
                data = yaml.safe_load(f) or {}
            # zulässig: {"types": {...}} oder direkt {...}
            if isinstance(data, dict) and "types" in data and isinstance(data["types"], dict):
                return data["types"]
            return data if isinstance(data, dict) else {}
    return {}


def _get_front(n: Dict[str, Any]) -> Dict[str, Any]:
    fm = n.get("frontmatter") or n.get("meta") or {}
    return fm if isinstance(fm, dict) else {}


def _coalesce(*vals):
    for v in vals:
        if v is not None:
            return v
    return None


def _env_float(name: str, default: float) -> float:
    try:
        return float(os.environ.get(name, default))
    except Exception:
        return default


def _ensure_list(x) -> list:
    if x is None:
        return []
    if isinstance(x, list):
        return [str(i) for i in x]
    if isinstance(x, (set, tuple)):
        return [str(i) for i in list(x)]
    return [str(x)]


def make_note_payload(note: Any, *args, **kwargs) -> Dict[str, Any]:
    """
    Build JSON-serialisable payload for a Note.
    Accepts legacy extra args/kwargs (e.g. types_config, vault_root) without error.
    """
    n = _as_dict(note)
    types_cfg = kwargs.get("types_config") or (args[0] if args else None)
    types_cfg = _load_types_config(types_cfg)

    fm = _get_front(n)
    note_type = str(fm.get("type") or n.get("type") or "note")
    cfg_for_type = types_cfg.get(note_type, {}) if isinstance(types_cfg, dict) else {}

    default_rw = _env_float("MINDNET_DEFAULT_RETRIEVER_WEIGHT", 1.0)

    retriever_weight = _coalesce(
        fm.get("retriever_weight"),
        cfg_for_type.get("retriever_weight"),
        default_rw,
    )
    try:
        retriever_weight = float(retriever_weight)
    except Exception:
        retriever_weight = default_rw

    chunk_profile = _coalesce(
        fm.get("chunk_profile"),
        cfg_for_type.get("chunk_profile"),
        os.environ.get("MINDNET_DEFAULT_CHUNK_PROFILE", "medium"),
    )
    if not isinstance(chunk_profile, str):
        chunk_profile = "medium"

    edge_defaults = _ensure_list(
        _coalesce(fm.get("edge_defaults"), cfg_for_type.get("edge_defaults"), [])
    )

    note_id = n.get("note_id") or n.get("id") or fm.get("id")
    title = n.get("title") or fm.get("title") or ""
    path = n.get("path")
    if isinstance(path, pathlib.Path):
        path = str(path)

    payload: Dict[str, Any] = {
        "note_id": note_id,
        "title": title,
        "type": note_type,
        "path": path,
        "retriever_weight": retriever_weight,
        "chunk_profile": chunk_profile,
        "edge_defaults": edge_defaults,
    }

    tags = fm.get("tags") or fm.get("keywords") or n.get("tags")
    if tags:
        payload["tags"] = _ensure_list(tags)

    for k in ("created", "modified", "date"):
        v = fm.get(k) or n.get(k)
        if v:
            payload[k] = str(v)

    # Validierungs-RTT (stellt JSON-Serialisierbarkeit sicher)
    json.loads(json.dumps(payload, ensure_ascii=False))
    return payload