from pydantic import BaseModel
from datetime import datetime
from typing import Optional, List

class CampaignCreate(BaseModel):
    name: str
    template_id: int
    list_id: int
    scheduled_at: Optional[datetime] = None

class CampaignUpdate(BaseModel):
    name: Optional[str] = None
    status: Optional[str] = None

class CampaignResponse(BaseModel):
    id: int
    name: str
    template_id: Optional[int]
    list_id: Optional[int]
    status: str
    scheduled_at: Optional[datetime]
    created_at: datetime

    class Config:
        from_attributes = True

class RecipientResponse(BaseModel):
    id: int
    campaign_id: int
    contact_id: int
    status: str
    provider_message_id: Optional[str]
    last_error: Optional[str]
    updated_at: datetime
    contact_phone: Optional[str] = None
    contact_name: Optional[str] = None

    class Config:
        from_attributes = True

class CampaignPreview(BaseModel):
    total_recipients: int
    opted_in_count: int
    dnd_count: int
    eligible_count: int
    sample_contacts: List[dict]