71 lines
1.6 KiB
Python
71 lines
1.6 KiB
Python
"""反向盤口移動（RLM）偵測模組。"""
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from __future__ import annotations
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from dataclasses import dataclass
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from datetime import datetime
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@dataclass(frozen=True)
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class ReverseLineMovementAlert:
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match_id: str
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market_type: str
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selection: str
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opening_odds: float
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current_odds: float
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ticket_pct: float
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handle_pct: float
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odds_change_pct: float
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smart_money_to: str
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is_triggered: bool
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triggered_at: datetime
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rationale: str
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def evaluate_reverse_line_movement(
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match_id: str,
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market_type: str,
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selection: str,
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*,
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opening_odds: float,
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current_odds: float,
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ticket_pct: float,
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handle_pct: float,
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ticket_threshold: float = 70.0,
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odds_change_threshold: float = 0.05,
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) -> ReverseLineMovementAlert:
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"""依條件判斷是否出現反向盤口。"""
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if opening_odds <= 0:
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odds_pct = 0.0
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else:
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odds_pct = round((current_odds - opening_odds) / opening_odds, 6)
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is_triggered = (
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ticket_pct > ticket_threshold
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and odds_pct > odds_change_threshold
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and handle_pct < ticket_pct
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)
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smart_money_to = selection if handle_pct > ticket_pct else '對側'
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rationale = (
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f'散戶 {ticket_pct:.1f}% 追捧卻資金 {handle_pct:.1f}%，\n'
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f'盤口由 {opening_odds:.2f} 上升到 {current_odds:.2f}'
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)
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return ReverseLineMovementAlert(
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match_id=match_id,
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market_type=market_type,
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selection=selection,
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opening_odds=opening_odds,
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current_odds=current_odds,
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ticket_pct=ticket_pct,
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handle_pct=handle_pct,
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odds_change_pct=round(odds_pct * 100, 4),
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smart_money_to=smart_money_to,
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is_triggered=is_triggered,
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triggered_at=datetime.utcnow(),
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rationale=rationale,
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)
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