"""Scan pipeline: load local frames → engines → store (per TF combo)."""

from __future__ import annotations

import json
import logging
from datetime import date, datetime, timezone

from crypto_wyckoff.combos import ROLE_HIGH, ROLE_LOW, ROLE_MID, get_combo, lookback_for
from crypto_wyckoff.cycle import CycleEngine
from crypto_wyckoff.decision import DecisionEngine
from crypto_wyckoff.domain_models import WyckoffScanRow
from crypto_wyckoff.event import EventEngine
from crypto_wyckoff.features import FeatureEngine
from crypto_wyckoff.io import load_frame
from crypto_wyckoff.phase import PhaseEngine
from crypto_wyckoff.plan import PlanEngine
from crypto_wyckoff.signal import SignalEngine
from crypto_wyckoff.store import upsert_row
from crypto_wyckoff.symbols_cn import display_name_cn
from crypto_wyckoff.version import WYCKOFF_ENGINE_VERSION

logger = logging.getLogger(__name__)


def analyze_symbol(
    low_frame,
    mid_frame,
    high_frame,
    *,
    feature_eng: FeatureEngine,
    cycle_eng: CycleEngine,
    phase_eng: PhaseEngine,
    event_eng: EventEngine,
    signal_eng: SignalEngine,
    decision_eng: DecisionEngine,
    plan_eng: PlanEngine,
) -> dict:
    """Run engines with D/W/M *role* aliases so existing rules match.

    Frames may be any TF combo (e.g. 1h/4h/8h); rules still see 1d/1w/1M roles.
    """
    f_d = feature_eng.run(low_frame, ROLE_LOW)
    f_w = feature_eng.run(mid_frame, ROLE_MID)
    f_m = feature_eng.run(high_frame, ROLE_HIGH)

    c_m = cycle_eng.run(f_m, ROLE_HIGH)
    c_w = cycle_eng.run(f_w, ROLE_MID)

    p_w = phase_eng.run(c_w, f_w, ROLE_MID)
    p_d = phase_eng.run(c_w, f_d, ROLE_LOW)

    e_w = event_eng.run(c_w, p_w, f_w, ROLE_MID)
    e_d = event_eng.run(c_w, p_d, f_d, ROLE_LOW)

    s_d = signal_eng.run(e_d, p_d)
    decision = decision_eng.run(c_m, c_w, p_w, e_w, e_d, s_d)
    plan = plan_eng.run(f_d, decision)

    return {
        "f_d": f_d, "f_w": f_w, "f_m": f_m,
        "c_m": c_m, "c_w": c_w, "p_w": p_w,
        "e_w": e_w, "e_d": e_d, "s_d": s_d,
        "decision": decision, "plan": plan,
    }


def _to_row(
    trade_date: date,
    symbol: str,
    result: dict,
    *,
    combo_id: str,
    combo_label: str,
) -> WyckoffScanRow:
    d = result["decision"]
    p = result["plan"]
    c_m, c_w, p_w = result["c_m"], result["c_w"], result["p_w"]
    e_w, e_d, s_d = result["e_w"], result["e_d"], result["s_d"]
    f_d, f_w, f_m = result["f_d"], result["f_w"], result["f_m"]

    snapshot = {
        "combo_id": combo_id,
        "combo_label": combo_label,
        "daily": {k: f_d.payload.get(k) for k in (
            "ma20", "ma60", "ma120", "atr", "adx", "volume_ratio",
            "range_high", "range_low", "swing_high", "swing_low", "close",
        )},
        "weekly": {k: f_w.payload.get(k) for k in ("ma20", "ma60", "adx", "close")},
        "monthly": {k: f_m.payload.get(k) for k in ("ma20", "ma60", "adx", "close")},
    }
    markers = []
    for key, typ in (("entry", "entry"), ("stop", "stop"), ("target1", "target1"), ("target2", "target2")):
        if p.payload.get(key) is not None:
            markers.append({"type": typ, "price": p.payload[key]})

    return WyckoffScanRow(
        trade_date=trade_date,
        ts_code=symbol,
        name=display_name_cn(symbol),
        industry="crypto",
        engine_version=WYCKOFF_ENGINE_VERSION,
        m_cycle=c_m.payload.get("cycle", "Unknown"),
        cycle_confidence=c_m.confidence,
        trend_score=float(d.payload.get("trend_score", c_m.score)),
        w_cycle=c_w.payload.get("cycle", "Unknown"),
        w_phase=p_w.payload.get("phase", "None"),
        w_current_event=e_w.payload.get("current_event", "None"),
        w_recent_events_json=json.dumps(
            e_w.payload.get("active_events") or e_w.payload.get("recent_events") or [],
            ensure_ascii=False,
        ),
        phase_confidence=p_w.confidence,
        structure_score=float(d.payload.get("structure_score", p_w.score)),
        d_current_event=e_d.payload.get("current_event", "None"),
        d_recent_events_json=json.dumps(
            e_d.payload.get("active_events") or e_d.payload.get("recent_events") or [],
            ensure_ascii=False,
        ),
        event_confidence=e_d.confidence,
        entry_score=float(d.payload.get("entry_score", e_d.score)),
        entry=p.payload.get("entry"),
        stop=p.payload.get("stop"),
        target1=p.payload.get("target1"),
        target2=p.payload.get("target2"),
        rr=p.payload.get("rr"),
        alignment=float(d.payload.get("alignment", 0)),
        stars=int(d.payload.get("stars", 1)),
        decision_signal=d.payload.get("decision_signal", "Watch"),
        signal_confidence=s_d.confidence,
        overall_confidence=float(d.payload.get("overall_confidence", d.confidence)),
        overall_score=float(d.payload.get("overall_score", d.score)),
        risk=d.payload.get("risk", "Medium"),
        reasons_json=json.dumps(d.reasons + d.warnings, ensure_ascii=False),
        feature_snapshot_json=json.dumps(snapshot, ensure_ascii=False),
        markers_json=json.dumps(markers, ensure_ascii=False),
        scanned_at=datetime.now(timezone.utc),
        combo_id=combo_id,
    )


_ENGINES = None


def _engines():
    global _ENGINES
    if _ENGINES is None:
        _ENGINES = {
            "feature_eng": FeatureEngine(),
            "cycle_eng": CycleEngine(),
            "phase_eng": PhaseEngine(),
            "event_eng": EventEngine(),
            "signal_eng": SignalEngine(),
            "decision_eng": DecisionEngine(),
            "plan_eng": PlanEngine(),
        }
    return _ENGINES


def analyze_and_store(
    symbol: str,
    trade_date: date | None = None,
    *,
    combo_id: str | None = None,
) -> WyckoffScanRow | None:
    eng = _engines()
    combo = get_combo(combo_id)
    low_tf, mid_tf, high_tf = combo["low"], combo["mid"], combo["high"]

    low = load_frame(symbol, low_tf, lookback_for(low_tf))
    mid = load_frame(symbol, mid_tf, lookback_for(mid_tf))
    high = load_frame(symbol, high_tf, lookback_for(high_tf))
    if low is None or len(low) < 40:
        return None
    result = analyze_symbol(low, mid, high, **eng)
    td = trade_date or (
        low.trade_dates[-1] if low.trade_dates else datetime.now(timezone.utc).date()
    )
    row = _to_row(td, symbol, result, combo_id=combo["id"], combo_label=combo["label"])
    upsert_row(row)
    return row