"""Pydantic response models."""
from pydantic import BaseModel, Field
from typing import Literal, Any


IntentType = Literal[
    "komm_nr",
    "dvn",
    "vin",
    "autocomplete_only",
    "keyword_search",
    "empty",
]

ResultType = Literal["vehicle", "page", "blog", "brand"]


class SearchResultItem(BaseModel):
    """Unified result item — fields are optional depending on type."""
    type: ResultType = "vehicle"
    title: str
    slug: str | None = None
    snippet: str | None = None
    score: float = 0.0
    matched_via: str = ""

    # Vehicle-specific
    vehicle_id: int | None = None
    commission_number: str | None = None
    vin: str | None = None
    brand: str | None = None
    model: str | None = None
    price: float | None = None
    primary_image_id: str | None = None
    directus_product_id: int | None = None

    # Blog-specific
    tags: list[str] | None = None
    category: str | None = None
    published_at: str | None = None
    image_id: str | None = None

    # Brand-specific
    logo_id: str | None = None

    model_config = {"extra": "allow"}


class SearchResponse(BaseModel):
    query: str
    intent: IntentType
    direct_redirect: bool = False
    total: int
    results: list[SearchResultItem]
    took_ms: int
    cache_hit: bool = False


class SuggestItem(BaseModel):
    text: str
    type: Literal["brand", "model", "category"]
    count: int = 0


class SuggestResponse(BaseModel):
    query: str
    suggestions: list[SuggestItem]
    took_ms: int


class HealthResponse(BaseModel):
    status: str
    environment: str
    db: str
    redis: str
    vehicles_count: int
    content: dict[str, Any] = Field(default_factory=dict)


class InvalidateResponse(BaseModel):
    cleared: int
    scope: str = "all"