from __future__ import annotations

"""候选筛选结果模型：RankedFlightCandidate与RankedHotelCandidate等经排序的候选。"""

from typing import Any, Literal

from pydantic import Field

from app.schemas.common import AppModel


class RankedFlightCandidate(AppModel):
    """经过确定性评分的单个航班候选。"""

    option_id: str

    score: float = Field(
        ge=0,
        le=100,
    )

    reasons: list[str] = Field(
        default_factory=list
    )

    warnings: list[str] = Field(
        default_factory=list
    )

    flight: dict[str, Any]


class RoundTripOption(AppModel):
    """一个完整的往返航班组合。"""

    combination_id: str

    score: float = Field(
        ge=0,
        le=100,
    )

    # 返程查询返回的完整往返接口报价（不是去程+返程的加总）。
    quoted_price: float | None = None

    currency: str = "CNY"

    outbound: dict[str, Any]
    return_flight: dict[str, Any]

    reasons: list[str] = Field(
        default_factory=list
    )

    warnings: list[str] = Field(
        default_factory=list
    )


class RankedHotelCandidate(AppModel):
    """经过确定性评分的酒店候选。"""

    hotel_id: str

    score: float = Field(
        ge=0,
        le=100,
    )

    reasons: list[str] = Field(
        default_factory=list
    )

    warnings: list[str] = Field(
        default_factory=list
    )

    hotel: dict[str, Any]


class CandidateSelectionResult(AppModel):
    """航班和酒店候选筛选结果。"""

    flight_type: Literal[
        "one_way",
        "round_trip",
    ]

    # 往返搜索时，用于发起返程查询的去程候选。
    outbound_candidates: list[
        RankedFlightCandidate
    ] = Field(
        default_factory=list
    )

    # 单程旅行使用。
    one_way_options: list[
        RankedFlightCandidate
    ] = Field(
        default_factory=list
    )

    # 往返旅行使用。
    round_trip_options: list[
        RoundTripOption
    ] = Field(
        default_factory=list
    )

    hotels: list[
        RankedHotelCandidate
    ] = Field(
        default_factory=list
    )

    warnings: list[str] = Field(
        default_factory=list
    )