from collections.abc import Iterator
from dataclasses import dataclass, field
from datetime import datetime
from typing import NamedTuple

from fansifter_common.adapters.sendgrid.models import Email, FanData
from fansifter_common.core.enums import Brand
from fansifter_common.utils import timezone


class EmailSend(NamedTuple):
    campaign_id: str
    batch_id: int
    batch_offset: int
    provider: str
    is_first_send: bool
    current_hourly_quota: float
    brand: Brand
    vendor_id: int
    vendor_name: str
    subject: str
    html_content: str
    preview_text: str | None
    from_email: Email
    to_fans: Iterator[FanData]
    emails_to_send: int
    send_at: datetime
    category: str


@dataclass(kw_only=True)
class EmailSendResult:
    batch_id: int
    campaign_id: str
    sent_emails: int
    timestamp: datetime = field(default_factory=timezone.now)
    has_failed_sends: bool = False


@dataclass(slots=True, frozen=True)
class Recipient:
    fan_id: str
    fan_email: str
    fan_country_iso2: str | None
    profile_id: str
    fan_first_name: str | None