"""积分 & 会员相关 Pydantic Schema (#1895)"""

from __future__ import annotations

from datetime import datetime
from typing import Any, Optional

from pydantic import BaseModel, Field

# ============ 余额 & 账户 ============


class PointsBalanceResponse(BaseModel):
    """积分余额 + 会员状态"""

    balance: int = Field(..., description="当前积分余额")
    total_earned: int = Field(..., description="累计获得积分")
    total_spent: int = Field(..., description="累计消耗积分")
    is_member: bool = Field(default=False, description="是否付费会员")
    member_type: Optional[str] = Field(None, description="会员类型: monthly/quarterly/yearly")
    member_expires_at: Optional[datetime] = Field(None, description="会员到期时间")


# ============ 流水 ============


class PointsTransactionItem(BaseModel):
    """单条积分流水"""

    id: str
    type: str = Field(..., description="类型: add/deduct")
    source: str = Field(..., description="来源场景")
    amount: int
    balance_after: int
    description: str = ""
    ref_id: str = ""
    created_at: Optional[str] = None


class PointsTransactionsResponse(BaseModel):
    """积分流水分页响应"""

    items: list[PointsTransactionItem]
    total: int
    page: int
    page_size: int


# ============ 规则 & 积分包 ============


class PointRuleItem(BaseModel):
    """单条积分规则"""

    scene_key: str
    name: str
    base_points: int
    unit: str
    extra_per_30s: Optional[int] = None
    description: str = Field(default="", description="规则中文说明，例如 AI 配音每分钟消耗 X 积分")


class PointsRulesResponse(BaseModel):
    """所有积分消耗规则"""

    rules: list[PointRuleItem]
    free_user_multiplier: float = Field(..., description="免费用户积分上浮系数")


class PointsPackageItem(BaseModel):
    """积分包信息"""

    code: str
    name: str
    points: int
    price_cents: int
    unit_price: str = Field("", description="单价描述，如 ¥0.099/积分")


class PointsPackagesResponse(BaseModel):
    """可购买的积分包列表"""

    packages: list[PointsPackageItem]
    user_discount: Optional[float] = Field(None, description="当前用户折扣（会员）")


# ============ 消费前检查 ============


class PointsCheckRequest(BaseModel):
    """消费前余额检查请求"""

    scene_key: str
    duration_minutes: Optional[float] = None
    quantity: Optional[int] = 1


class PointsCheckResponse(BaseModel):
    """消费前余额检查响应"""

    allowed: bool
    required_points: int
    current_balance: int
    remaining_after: int
    is_free_quota: bool = False


# ============ 手动扣减 / 退还（内部接口） ============


class PointsDeductRequest(BaseModel):
    """积分扣减请求"""

    scene_key: str
    amount: int
    description: Optional[str] = ""
    ref_id: Optional[str] = ""


class PointsRefundRequest(BaseModel):
    """积分退还请求"""

    transaction_id: str
    reason: Optional[str] = ""


class PointsRechargeRequest(BaseModel):
    """积分充值请求"""

    package_id: str = Field(..., description="积分包 code，如 starter_pack")


# ============ 订单 ============


class PointsOrderResponse(BaseModel):
    """订单信息"""

    id: str
    order_type: str
    product_code: str
    amount_cents: int
    points_amount: int = Field(0, description="本次充值/购买可获得的积分（仅 points 类型订单有意义）")
    status: str
    pay_params: dict[str, Any] = Field(
        default_factory=dict, description="拉起支付所需参数（payment_url/prepay_id 等），支付通道接入后填充"
    )
    expire_at: Optional[str] = Field(None, description="订单过期时间（ISO 8601），默认创建后 48 小时")
    created_at: Optional[str] = None


# ============ 每日额度 ============


class DailyUsageResponse(BaseModel):
    """今日免费额度使用情况"""

    free_clips_used: int
    free_clips_limit: int
    free_clips_remaining: int
    reset_at: str


# ============ 会员状态（聚合） ============


class MembershipStatusResponse(BaseModel):
    """当前用户会员状态（聚合信息）"""

    is_member: bool
    member_type: Optional[str] = None
    member_expires_at: Optional[datetime] = None
    points_balance: int
    max_resolution: str = Field(
        default="1080p",
        description="可用最高分辨率: 720p(free) / 1080p(paid)",
    )


# ============ 订阅档位 ============


class MembershipPlanItem(BaseModel):
    """单个会员档位"""

    plan_id: str = Field(..., description="档位标识: monthly/quarterly/yearly")
    name: str = Field(..., description="档位名称，例如 月卡")
    monthly_price_cents: int = Field(..., description="折算月价（分）")
    price_cents: int = Field(..., description="该档位总价（分）")
    duration_days: int = Field(..., description="时长（天）")
    points_discount: float = Field(..., description="该档位积分折扣，如 0.9 表示 9 折")
    features: dict[str, Any] = Field(default_factory=dict, description="档位权益（max_resolution 等）")


class MembershipPlansResponse(BaseModel):
    """所有会员档位列表"""

    plans: list[MembershipPlanItem]


# ============ 通用响应 ============


class SimpleMessageResponse(BaseModel):
    """简单消息响应"""

    success: bool
    message: str
    data: Optional[dict[str, Any]] = None