"""福利模块(钱包 / 签到 / 任务)请求 / 响应 schemas。

约定同 auth:字段 snake_case、时间 ISO 8601(UTC)、金额存整数。
"""
from __future__ import annotations

from datetime import datetime

from pydantic import BaseModel, ConfigDict, Field


# ===== 钱包 / 我的资产 =====

class CoinAccountOut(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    coin_balance: int = Field(..., description="当前金币余额")
    cash_balance_cents: int = Field(..., description="当前现金余额(分)")
    total_coin_earned: int = Field(..., description="累计赚取金币")


class CoinTransactionOut(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    amount: int = Field(..., description="正=入账,负=出账")
    balance_after: int
    biz_type: str
    ref_id: str | None = None
    remark: str | None = None
    created_at: datetime


class CoinTransactionPage(BaseModel):
    items: list[CoinTransactionOut]
    next_cursor: int | None = Field(None, description="下一页游标(末条 id);为空表示到底")


class CashTransactionOut(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    amount_cents: int = Field(..., description="正=兑入,负=提现")
    balance_after_cents: int
    biz_type: str
    ref_id: str | None = None
    remark: str | None = None
    created_at: datetime


class CashTransactionPage(BaseModel):
    items: list[CashTransactionOut]
    next_cursor: int | None = Field(None, description="下一页游标(末条 id);为空表示到底")


# ===== 金币兑现金 =====

class ExchangeInfoOut(BaseModel):
    coin_per_yuan: int = Field(..., description="多少金币兑 1 元")
    min_coin: int = Field(..., description="单次兑换最少金币")
    step_coin: int = Field(..., description="兑换金币需为该值的整数倍(整分)")


class ExchangeRequest(BaseModel):
    coin_amount: int = Field(..., gt=0, description="要兑换的金币数")


class ExchangeResultOut(BaseModel):
    coin_amount: int = Field(..., description="本次扣除的金币")
    cash_added_cents: int = Field(..., description="本次兑入的现金(分)")
    coin_balance: int = Field(..., description="兑换后金币余额")
    cash_balance_cents: int = Field(..., description="兑换后现金余额(分)")


# ===== 提现(现金 → 微信零钱) =====

class WithdrawInfoOut(BaseModel):
    min_cents: int = Field(..., description="单次最低提现(分)")
    max_cents: int = Field(..., description="单次最高提现(分)")
    wechat_bound: bool = Field(..., description="当前用户是否已绑定微信")
    wechat_nickname: str | None = Field(None, description="微信昵称(可能为空/脱敏)")
    wechat_avatar_url: str | None = Field(None, description="微信头像 URL(可能为空)")


class BindWechatRequest(BaseModel):
    code: str = Field(..., description="微信授权返回的 code")


class BindWechatResultOut(BaseModel):
    bound: bool = True
    wechat_nickname: str | None = None
    wechat_avatar_url: str | None = None


class UnbindWechatResultOut(BaseModel):
    bound: bool = False


class WithdrawRequest(BaseModel):
    amount_cents: int = Field(..., gt=0, description="提现金额(分)")
    user_name: str | None = Field(None, description="实名(达额时微信要求,可空)")
    out_bill_no: str | None = Field(
        None, description="客户端幂等键(商户单号):同号重试不重复转账。不传则服务端生成"
    )


class WithdrawResultOut(BaseModel):
    out_bill_no: str = Field(..., description="商户提现单号(查单用)")
    status: str = Field(..., description="pending / success / failed")
    wechat_state: str | None = Field(None, description="微信侧原始状态")
    amount_cents: int
    cash_balance_cents: int = Field(..., description="提现后现金余额(分)")
    # 供 App 拉起微信确认页(WXOpenBusinessView requestMerchantTransfer)
    package_info: str | None = None
    mch_id: str | None = None
    app_id: str | None = None


class WithdrawStatusOut(BaseModel):
    out_bill_no: str
    status: str = Field(..., description="pending / success / failed")
    wechat_state: str | None = None
    amount_cents: int


class WithdrawOrderOut(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    out_bill_no: str
    amount_cents: int
    status: str
    wechat_state: str | None = None
    fail_reason: str | None = None
    created_at: datetime


class WithdrawOrderPage(BaseModel):
    items: list[WithdrawOrderOut]
    next_cursor: int | None = Field(None, description="下一页游标(末条 id);为空表示到底")


# ===== 签到 =====

class SigninStepOut(BaseModel):
    day: int = Field(..., description="循环内第几天 1..7")
    coin: int
    status: str = Field(..., description="claimed / today / locked")


class SigninStatusOut(BaseModel):
    today_signed: bool
    consecutive_days: int
    today_cycle_day: int
    today_coin: int
    can_claim: bool
    steps: list[SigninStepOut]


class SigninResultOut(BaseModel):
    coin_awarded: int
    cycle_day: int
    streak: int
    coin_balance: int = Field(..., description="签到后金币余额")


# ===== 任务 =====

class TaskOut(BaseModel):
    task_key: str
    coin: int
    claimed: bool


class TaskListOut(BaseModel):
    items: list[TaskOut]


class TaskClaimResultOut(BaseModel):
    task_key: str
    coin_awarded: int
    coin_balance: int = Field(..., description="领奖后金币余额")


# ===== 省钱(累计帮你省了 / 省钱战绩 / 明细)=====

class SavingsSummaryOut(BaseModel):
    total_saved_cents: int = Field(..., description="累计省下(分)")
    order_count: int = Field(..., description="累计省钱订单数")
    avg_saved_cents: int = Field(..., description="平均每单省(分)")


class SavingsBattleOut(BaseModel):
    week_saved_cents: int = Field(..., description="本周已省(分)")
    beat_percent: int = Field(..., description="超过百分之多少用户")
    streak_days: int = Field(..., description="连续省钱天数")


class SavingsRecordOut(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    order_amount_cents: int
    saved_amount_cents: int
    platform: str | None = None
    title: str | None = None
    shop_name: str | None = None
    dishes: list[str] = []
    created_at: datetime


class SavingsRecordPage(BaseModel):
    items: list[SavingsRecordOut]
    next_cursor: int | None = Field(None, description="下一页游标(末条 id);为空表示到底")