from __future__ import annotations

from datetime import datetime
from typing import List, Optional

from pydantic import BaseModel, Field


class PartnerReferrerItem(BaseModel):
    id: int
    telegram_id: int
    username: Optional[str] = None
    first_name: Optional[str] = None
    last_name: Optional[str] = None
    referral_code: Optional[str] = None
    referral_commission_percent: Optional[int] = None
    effective_referral_commission_percent: int
    invited_count: int
    active_referrals: int
    total_earned_kopeks: int
    total_earned_rubles: float
    month_earned_kopeks: int
    month_earned_rubles: float
    created_at: datetime
    last_activity: Optional[datetime] = None


class PartnerReferrerListResponse(BaseModel):
    items: List[PartnerReferrerItem] = Field(default_factory=list)
    total: int
    limit: int
    offset: int


class PartnerReferralItem(BaseModel):
    id: int
    telegram_id: int
    full_name: str
    username: Optional[str] = None
    created_at: datetime
    last_activity: Optional[datetime] = None
    has_made_first_topup: bool
    balance_kopeks: int
    balance_rubles: float
    total_earned_kopeks: int
    total_earned_rubles: float
    topups_count: int
    days_since_registration: int
    days_since_activity: Optional[int] = None
    status: str


class PartnerReferralList(BaseModel):
    items: List[PartnerReferralItem] = Field(default_factory=list)
    total: int
    limit: int
    offset: int
    has_next: bool
    has_prev: bool
    current_page: int
    total_pages: int


class PartnerReferrerDetail(BaseModel):
    referrer: PartnerReferrerItem
    referrals: PartnerReferralList


class PartnerReferralCommissionUpdate(BaseModel):
    referral_commission_percent: Optional[int] = Field(
        default=None,
        ge=0,
        le=100,
        description="Индивидуальный процент реферальной комиссии для пользователя",
    )


# ============================================================================
# РАСШИРЕННАЯ СТАТИСТИКА ПАРТНЁРОВ
# ============================================================================


class EarningsByPeriod(BaseModel):
    """Заработки по периодам."""
    all_time_kopeks: int
    year_kopeks: int
    month_kopeks: int
    week_kopeks: int
    today_kopeks: int


class ReferralsCountByPeriod(BaseModel):
    """Количество рефералов по периодам."""
    all_time: int
    year: int
    month: int
    week: int
    today: int


class ReferrerSummary(BaseModel):
    """Сводка по рефереру."""
    total_referrals: int
    paid_referrals: int
    active_referrals: int
    conversion_to_paid_percent: float
    conversion_to_active_percent: float
    avg_earnings_per_referral_kopeks: float


class ReferrerDetailedStats(BaseModel):
    """Детальная статистика реферера."""
    user_id: int
    summary: ReferrerSummary
    earnings: EarningsByPeriod
    referrals_count: ReferralsCountByPeriod


class DailyStats(BaseModel):
    """Статистика за день."""
    date: str
    referrals_count: int
    earnings_kopeks: int


class DailyStatsResponse(BaseModel):
    """Ответ со статистикой по дням."""
    items: List[DailyStats]
    days: int
    user_id: Optional[int] = None


class TopReferralItem(BaseModel):
    """Топ реферал."""
    id: int
    telegram_id: int
    username: Optional[str] = None
    first_name: Optional[str] = None
    last_name: Optional[str] = None
    full_name: str
    created_at: datetime
    has_made_first_topup: bool
    is_active: bool
    total_earnings_kopeks: int


class TopReferralsResponse(BaseModel):
    """Топ рефералов реферера."""
    items: List[TopReferralItem]
    user_id: int


class PeriodData(BaseModel):
    """Данные за период."""
    days: int
    start: str
    end: str
    referrals_count: int
    earnings_kopeks: int


class ChangeData(BaseModel):
    """Данные об изменении."""
    absolute: int
    percent: float
    trend: str  # up, down, stable


class PeriodChange(BaseModel):
    """Изменения между периодами."""
    referrals: ChangeData
    earnings: ChangeData


class PeriodComparisonResponse(BaseModel):
    """Сравнение периодов."""
    current_period: PeriodData
    previous_period: PeriodData
    change: PeriodChange
    user_id: Optional[int] = None


class GlobalPartnerSummary(BaseModel):
    """Глобальная сводка партнёрской программы."""
    total_referrers: int
    total_referrals: int
    paid_referrals: int
    conversion_rate_percent: float
    avg_earnings_per_referral_kopeks: float


class PayoutsByPeriod(BaseModel):
    """Выплаты по периодам."""
    all_time_kopeks: int
    year_kopeks: int
    month_kopeks: int
    week_kopeks: int
    today_kopeks: int


class NewReferralsByPeriod(BaseModel):
    """Новые рефералы по периодам."""
    today: int
    week: int
    month: int


class GlobalPartnerStats(BaseModel):
    """Глобальная статистика партнёрской программы."""
    summary: GlobalPartnerSummary
    payouts: PayoutsByPeriod
    new_referrals: NewReferralsByPeriod


class TopReferrerItem(BaseModel):
    """Топ реферер."""
    id: int
    telegram_id: int
    username: Optional[str] = None
    first_name: Optional[str] = None
    last_name: Optional[str] = None
    full_name: str
    referral_code: Optional[str] = None
    referrals_count: int
    total_earnings_kopeks: int


class TopReferrersResponse(BaseModel):
    """Топ рефереров."""
    items: List[TopReferrerItem]
    days: Optional[int] = None