from __future__ import annotations

from datetime import datetime

from pydantic import BaseModel, Field


class CreditBalanceItemOut(BaseModel):
    id: str
    credit_scope: str
    credit_scope_label: str = ""
    team_id: str | None = None
    credit_level: str
    credit_level_label: str = ""
    source_type: str
    source_type_label: str = ""
    source_id: str | None = None
    product_id: str | None = None
    payment_order_id: str | None = None
    subscription_id: str | None = None
    subscription_period_id: str | None = None
    grant_amount: float
    unspent_amount: float
    consumed_amount: float
    expired_amount: float
    revoked_amount: float
    valid_from: datetime
    expires_at: datetime
    last_usable_at: datetime
    status: str
    status_label: str = ""
    created_at: datetime


class CreditBalanceSummaryOut(BaseModel):
    credits: float
    available_credits: float
    personal_credits: float = 0
    team_available_credits: float = 0
    team_frozen_credits: float = 0
    next_expiring_credits: float
    next_expires_at: datetime | None = None
    next_last_usable_at: datetime | None = None


class AdminCreditGrantRequest(BaseModel):
    amount: float = Field(..., gt=0, le=999999999.99, multiple_of=0.01)
    description: str = Field(..., min_length=1, max_length=256)
    valid_from: datetime | None = None
    validity_unit: str = Field(default="month", pattern="^(day|month)$")
    validity_value: int = Field(default=1, ge=1, le=120)
    credit_level: str = Field(default="general", pattern="^(promotional|general)$")


class AdminCreditDeductRequest(BaseModel):
    amount: float = Field(..., gt=0, le=999999999.99, multiple_of=0.01)
    description: str = Field(..., min_length=1, max_length=256)