"""Employee invitation emails sent from the platform domain."""

from __future__ import annotations

from sqlalchemy.ext.asyncio import AsyncSession

from app.config import get_settings
from app.models import Account, MailDomain
from app.services.domain_provisioning import get_domain_by_name
from app.services.mail_sender import deliver_email


async def send_employee_invitation(
    session: AsyncSession,
    *,
    member: Account,
    manager: Account,
    initial_password: str,
    force_password_change: bool,
) -> None:
    if not member.invitation_email:
        raise ValueError("Invitation email is required.")

    settings = get_settings()
    platform_domain = await get_domain_by_name(session, settings.platform_domain)
    if platform_domain is None:
        raise ValueError("Platform mail domain is not configured.")

    login_url = f"https://{settings.app_public_host}/login"
    manager_name = f"{manager.first_name} {manager.last_name}".strip()
    company = member.company_domain or settings.platform_domain

    change_note = (
        "You will be asked to choose a new password immediately after signing in."
        if force_password_change
        else "You can change your password later from account settings."
    )

    body_text = (
        f"Hi {member.first_name},\n\n"
        f"{manager_name} invited you to AGMail for {company}.\n\n"
        f"Sign in at: {login_url}\n"
        f"Work email: {member.email}\n"
        f"Temporary password: {initial_password}\n\n"
        f"{change_note}\n\n"
        "— AGMail"
    )
    body_html = (
        f"<p>Hi {member.first_name},</p>"
        f"<p><strong>{manager_name}</strong> invited you to AGMail for "
        f"<strong>{company}</strong>.</p>"
        f"<p><a href=\"{login_url}\">Sign in to AGMail</a></p>"
        f"<ul>"
        f"<li><strong>Work email:</strong> {member.email}</li>"
        f"<li><strong>Temporary password:</strong> {initial_password}</li>"
        f"</ul>"
        f"<p>{change_note}</p>"
        f"<p>— AGMail</p>"
    )

    sender = f"AGMail <noreply@{settings.platform_domain}>"
    await deliver_email(
        sender=sender,
        recipients=[member.invitation_email],
        cc=[],
        bcc=[],
        subject=f"You're invited to {company} on AGMail",
        body_text=body_text,
        body_html=body_html,
        domain=platform_domain,
    )