from pydantic import BaseModel, ConfigDict, Field
from datetime import datetime
from typing import Literal, Optional


class ReminderCreate(BaseModel):
    model_config = ConfigDict(extra="forbid")

    title: str = Field(min_length=1, max_length=255)
    description: Optional[str] = Field(None, max_length=5000)
    remind_at: Optional[datetime] = None
    is_active: bool = True
    recurrence_rule: Optional[Literal['daily', 'weekly', 'monthly']] = None


class ReminderUpdate(BaseModel):
    model_config = ConfigDict(extra="forbid")

    title: Optional[str] = Field(None, min_length=1, max_length=255)
    description: Optional[str] = Field(None, max_length=5000)
    remind_at: Optional[datetime] = None
    is_active: Optional[bool] = None
    is_dismissed: Optional[bool] = None
    recurrence_rule: Optional[Literal['daily', 'weekly', 'monthly']] = None


class ReminderSnooze(BaseModel):
    model_config = ConfigDict(extra="forbid")

    minutes: Literal[5, 10, 15]
    client_now: Optional[datetime] = None


class ReminderResponse(BaseModel):
    id: int
    title: str
    description: Optional[str]
    remind_at: Optional[datetime]
    is_active: bool
    is_dismissed: bool
    snoozed_until: Optional[datetime] = None
    recurrence_rule: Optional[str]
    created_at: datetime
    updated_at: datetime

    model_config = ConfigDict(from_attributes=True)