from __future__ import annotations

from datetime import datetime

from pydantic import BaseModel, Field

from app.schemas.credit_subscription import CreditSubscriptionOut


class TeamSeatCreateRequest(BaseModel):
    user_id: str = Field(..., min_length=1, max_length=32)
    monthly_allocated_credits: float = Field(..., gt=0, le=999999999.99, multiple_of=0.01)


class TeamSeatUpdateRequest(BaseModel):
    monthly_allocated_credits: float = Field(..., gt=0, le=999999999.99, multiple_of=0.01)


class TeamSeatOut(BaseModel):
    id: str
    team_id: str
    subscription_id: str
    user_id: str
    username: str | None = None
    monthly_allocated_credits: float
    current_period_id: str | None = None
    current_period_used_credits: float = 0
    current_period_remaining_credits: float = 0
    status: str
    status_label: str
    created_at: datetime
    cancelled_at: datetime | None = None


class TeamSubscriptionManageOut(BaseModel):
    subscription: CreditSubscriptionOut
    current_period_id: str | None = None
    current_period_start_at: datetime | None = None
    current_period_expires_at: datetime | None = None
    period_total_credits: float = 0
    period_unspent_credits: float = 0
    period_unallocated_credits: float = 0
    seat_limit: int
    active_seat_count: int
    seats: list[TeamSeatOut] = Field(default_factory=list)


class TeamMemberUsageOut(BaseModel):
    user_id: str
    username: str | None = None
    # 以下两个 ID 保留给内部关联/筛选，前端业务表格不直接展示。
    subscription_id: str
    subscription_no: str
    subscription_period_id: str
    subscription_name: str
    tier_code: str
    tier_label: str
    tier_rank: int
    billing_cycle: str
    billing_cycle_label: str
    period_sequence: int
    period_label: str
    period_start_at: datetime | None = None
    period_expires_at: datetime | None = None
    consumed_credits: float


class TeamManagerHistoryOut(BaseModel):
    id: str
    team_id: str
    manager_user_id: str
    manager_name: str | None = None
    started_at: datetime
    ended_at: datetime | None = None