"""챕터 메타 YAML 스키마 — content/chapters/*.yaml.

ending_rules의 condition은 trust_score/doubt_score 변수만 쓰는 비교식 문자열.
평가(파싱·판정)는 services/story.py의 결정적 코드가 담당한다 (LLM 판정 금지).
"""

from __future__ import annotations

from typing import Optional

from pydantic import BaseModel, ConfigDict, Field


class EndingRule(BaseModel):
    model_config = ConfigDict(extra="forbid")

    id: str
    label: str
    condition: str  # 예: "doubt_score >= 30" / "default"
    canonical: bool = False
    description: str = ""
    priority: int = 0  # 낮을수록 먼저 평가. default는 마지막


class RCardRef(BaseModel):
    model_config = ConfigDict(extra="forbid")

    id: str
    trigger: str  # identity_direct | weapon
    description: str = ""


class BeatRange(BaseModel):
    model_config = ConfigDict(extra="forbid")

    start: str  # "E01"
    end: str  # "E06"


class Chapter(BaseModel):
    model_config = ConfigDict(extra="forbid")

    id: str
    title: str = ""
    summary: str = ""
    entry_beat: str  # "E01-01"
    beat_range: BeatRange
    ending_rules: list[EndingRule]
    canon_rules: list[str] = Field(default_factory=list)
    r_cards: list[RCardRef] = Field(default_factory=list)
    pocket_max_turns: int = 6  # 개입 포켓 자유채팅 턴 상한 (강제 수렴)


class ChapterFile(BaseModel):
    model_config = ConfigDict(extra="forbid")

    chapter: Chapter