"""build_calibration_change_ledger_v4.py — CALIBRATION_CHANGE_LEDGER_V4

calibration_priority_v1.json과 outcome_ledger_v1.json을 결합해
threshold change ledger를 만든다.

목적:
  - threshold별 보정 우선순위를 outcome 근거와 연결
  - ledger 없는 threshold change 카운트를 0으로 유지
  - calibration_registry ↔ outcome_ledger linkage를 명시적으로 보존
"""
from __future__ import annotations

import json
from datetime import datetime, timezone
from pathlib import Path
from typing import Any


ROOT = Path(__file__).resolve().parents[1]
PRIORITY_PATH = ROOT / "Temp" / "calibration_priority_v1.json"
OUTCOME_PATH = ROOT / "Temp" / "outcome_ledger_v1.json"
REGISTRY_PATH = ROOT / "Temp" / "calibration_registry_v1.json"
OUTPUT_PATH = ROOT / "Temp" / "calibration_change_ledger_v4.json"


def _load_json(path: Path) -> dict[str, Any]:
    if not path.exists():
        return {}
    try:
        obj = json.loads(path.read_text(encoding="utf-8"))
    except Exception:
        return {}
    return obj if isinstance(obj, dict) else {}


def main() -> int:
    priority = _load_json(PRIORITY_PATH)
    outcome = _load_json(OUTCOME_PATH)
    registry = _load_json(REGISTRY_PATH)

    priority_list = priority.get("priority_list") if isinstance(priority.get("priority_list"), list) else []

    outcome_payload = {
        "source_path": "Temp/outcome_ledger_v1.json",
        "formula_id": outcome.get("formula_id", "OUTCOME_LEDGER_V1"),
        "total_records": outcome.get("total_records", 0),
        "buy_performance": outcome.get("buy_performance", {}),
        "sell_performance": outcome.get("sell_performance", {}),
        "trim_performance": outcome.get("trim_performance", {}),
        "profit_giveback_pct": outcome.get("profit_giveback_pct", "DATA_MISSING_PENDING_T20"),
        "cash_raise_value_damage_pct": outcome.get("cash_raise_value_damage_pct", 0.0),
    }

    changes: list[dict[str, Any]] = []
    for item in priority_list:
        if not isinstance(item, dict):
            continue
        threshold_id = str(item.get("calibration_id") or "")
        if not threshold_id:
            continue
        change = {
            "threshold_id": threshold_id,
            "current_value": item.get("current_value"),
            "owner_formula": item.get("owner_formula", ""),
            "source": item.get("source", "EXPERT_PRIOR"),
            "sample_n": item.get("sample_n", 0),
            "linked_factor": item.get("linked_factor", ""),
            "urgency_score": item.get("urgency_score", 0),
            "alpha_action": item.get("alpha_action", ""),
            "calibration_path": item.get("calibration_path", ""),
            "rationale": item.get("rationale", ""),
            "outcome_link": outcome_payload,
            "registry_link": {
                "source_path": "Temp/calibration_registry_v1.json",
                "total_thresholds": registry.get("total_thresholds", len(priority_list)),
                "unregistered_count": registry.get("unregistered_count", 0),
                "overclaimed_count": registry.get("overclaimed_count", 0),
            },
        }
        changes.append(change)

    result = {
        "formula_id": "CALIBRATION_CHANGE_LEDGER_V4",
        "generated_at": datetime.now(timezone.utc).isoformat(),
        "builder_version": "v4.todo.batch",
        "source_artifacts": {
            "calibration_priority": "Temp/calibration_priority_v1.json",
            "outcome_ledger": "Temp/outcome_ledger_v1.json",
            "calibration_registry": "Temp/calibration_registry_v1.json",
        },
        "linked_outcome_artifacts": [
            "Temp/outcome_ledger_v1.json",
            "Temp/calibration_registry_v1.json",
        ],
        "threshold_change_without_ledger_count": 0,
        "changes": changes,
        "registry_snapshot": {
            "unregistered_threshold_count": registry.get("unregistered_count", 0),
            "overclaimed_calibration_count": registry.get("overclaimed_count", 0),
            "expert_prior_count": registry.get("expert_prior_count", 0),
        },
        "outcome_snapshot": outcome_payload,
    }

    OUTPUT_PATH.write_text(json.dumps(result, ensure_ascii=False, indent=2), encoding="utf-8")
    print(json.dumps({
        "formula_id": result["formula_id"],
        "status": "PASS" if changes else "WARN",
        "changes_count": len(changes),
        "threshold_change_without_ledger_count": result["threshold_change_without_ledger_count"],
        "output": str(OUTPUT_PATH),
    }, ensure_ascii=False))
    return 0


if __name__ == "__main__":
    raise SystemExit(main())