"""Layer 2 — Context Matrix (persona + tensions + cultural context)."""

from __future__ import annotations

import json
from pathlib import Path
from typing import Literal

from pydantic import BaseModel, Field


class GreimasSquare(BaseModel):
    S1: str
    S2: str
    not_S1: str
    not_S2: str


class TensionArchetype(BaseModel):
    id: str
    name: str
    description: str = ""
    greimas_square: GreimasSquare
    emotional_payoff: str


class Demographic(BaseModel):
    age_range: str | None = None
    gender: str | None = None
    income_band: str | None = None
    education: str | None = None
    region: str | None = None


class Psychographic(BaseModel):
    values: list[str] = Field(default_factory=list)
    pain_points: list[str] = Field(default_factory=list)
    aspirations: list[str] = Field(default_factory=list)
    media_habits: list[str] = Field(default_factory=list)


class TargetPersona(BaseModel):
    demographic: Demographic = Field(default_factory=Demographic)
    psychographic: Psychographic = Field(default_factory=Psychographic)
    free_text: str | None = None


class CulturalContext(BaseModel):
    korean_specific: list[str] = Field(default_factory=list)
    global_universal: list[str] = Field(default_factory=list)
    forbidden_zones: list[str] = Field(default_factory=list)


class FlochAxis(BaseModel):
    axis: str
    value_type: Literal["practical", "utopian", "critical", "playful"]
    description: str | None = None


class ContextMatrix(BaseModel):
    target_persona: TargetPersona = Field(default_factory=TargetPersona)
    tension_archetypes: list[TensionArchetype] = Field(min_length=6)
    cultural_context: CulturalContext = Field(default_factory=CulturalContext)
    setting_archetypes: list[str] = Field(default_factory=list)
    floch_consumption_axis: list[FlochAxis] = Field(default_factory=list)

    def get_tension(self, tension_id: str) -> TensionArchetype:
        for t in self.tension_archetypes:
            if t.id == tension_id:
                return t
        raise KeyError(f"Tension '{tension_id}' not found")


def load_context(path: str | Path) -> ContextMatrix:
    """Load ContextMatrix from a tensions JSON file."""
    data = json.loads(Path(path).read_text(encoding="utf-8"))
    return ContextMatrix.model_validate(data)