"""Darwin Cortex - shared Pydantic v2 models."""

from __future__ import annotations

from datetime import datetime

from typing import Optional

from pydantic import BaseModel, Field

class Hit(BaseModel):

    """Normalised result from any engine."""

    engine: str

    title: str = ""

    path: str = ""

    snippet: str = ""

    score: float = 0.0

    last_seen: Optional[datetime] = None

    confidence: float = 0.8

    authority_tier: str = "older-note"

class Receipt(BaseModel):

    id: str

    source: str

    path: str

    last_seen: Optional[datetime] = None

    confidence: float

    snippet: str

class Conflict(BaseModel):

    claim: str

    winner: str

    losers: list[str]

    reason: str

class EngineStatus(BaseModel):

    engine: str

    status: str

    ms: Optional[int] = None

    last_ingest: Optional[datetime] = None

    staleness_h: Optional[float] = None

class AskRequest(BaseModel):

    query: str

    mode: str = "both"

    scope: Optional[list[str]] = None

    k: int = 12

    synthesize: bool = True

class AskResponse(BaseModel):

    answer: Optional[str] = None

    receipts: list[Receipt] = Field(default_factory=list)

    hits: list[Hit] = Field(default_factory=list)

    conflicts: list[Conflict] = Field(default_factory=list)

    engines: list[EngineStatus] = Field(default_factory=list)

    took_ms: int = 0

class HealthResponse(BaseModel):

    engines: list[EngineStatus] = Field(default_factory=list)

    ok: bool = True