SMW-Upload/quotes/email_utils.py

"""
Email utilities for sending submission notifications.
"""

from django.core.mail import send_mail, EmailMultiAlternatives
from django.template.loader import render_to_string
from django.conf import settings


def get_file_urls_with_base_url(files):
    """
    Get absolute URLs for files.
    Constructs full URLs using ALLOWED_HOSTS from settings.
    """
    # Get base URL from ALLOWED_HOSTS
    allowed_hosts = getattr(settings, "ALLOWED_HOSTS", [])
    if allowed_hosts and allowed_hosts[0] != "*":
        # Use first allowed host
        domain = allowed_hosts[0]
        # Check if it's localhost or IP for HTTP
        if (
            domain.startswith("127.0.0.1")
            or domain.startswith("localhost")
            or domain.startswith("10.")
        ):
            # In DEBUG mode, add port 8000 (default Django dev server)
            if settings.DEBUG:
                base_url = f"http://{domain}:8000"
            else:
                base_url = f"http://{domain}"
        else:
            base_url = f"https://{domain}"
    else:
        # Fallback: use localhost with port in DEBUG mode
        if settings.DEBUG:
            base_url = "http://127.0.0.1:8000"
        else:
            base_url = ""

    file_urls = []
    for file in files:
        # In DEBUG mode, use MEDIA_URL (WhiteNoise serves it)
        # In production, use /uploads/ (nginx serves it)
        if settings.DEBUG:
            # Use MEDIA_URL which is "media/"
            media_url = settings.MEDIA_URL.rstrip("/")
            file_path = f"/{media_url}/{file.path}"
        else:
            # Use /uploads/ for nginx
            file_path = f"/uploads/{file.path}"

        if base_url:
            # Make it an absolute URL
            file_url = base_url + file_path
        else:
            # Fallback: relative URL
            file_url = file_path

        file_urls.append(
            {
                "file": file,
                "url": file_url,
            }
        )
    return file_urls


def send_submission_emails(submission):
    """
    Send emails for a quote submission.
    Sends:
    1. Notification to owner (OWNER_EMAIL)
    2. Confirmation to submitter (submission.email)

    Returns tuple (owner_sent, submitter_sent)
    """
    files = submission.files.all()
    file_urls = get_file_urls_with_base_url(files)
    owner_email = getattr(settings, "OWNER_EMAIL", "")

    owner_sent = False
    submitter_sent = False

    # Email 1: Notification to owner
    if owner_email:
        try:
            subject = f"New Quote Request - Submission #{submission.id}"
            html_message = render_to_string(
                "emails/submission_notification_owner.html",
                {
                    "submission": submission,
                    "files": files,
                    "file_urls": file_urls,
                },
            )

            # Plain text fallback
            text_message = f"""
New Quote Request Received!

Submitted by: {submission.email}
Submitted at: {submission.submitted_at.strftime('%B %d, %Y %I:%M %p')}
Submission ID: #{submission.id}

Description:
{submission.description or '(No description provided)'}

Files uploaded: {files.count()}
"""
            for file_url_data in file_urls:
                file = file_url_data["file"]
                url = file_url_data["url"]
                text_message += f"- {file.original_filename} ({file.file_size} bytes)\n"
                text_message += f"  Download: {url}\n"

            msg = EmailMultiAlternatives(
                subject=subject,
                body=text_message,
                from_email=settings.DEFAULT_FROM_EMAIL,
                to=[owner_email],
            )
            msg.attach_alternative(html_message, "text/html")
            msg.send()
            owner_sent = True
        except Exception as e:
            print(f"Error sending owner email: {e}")

    # Email 2: Confirmation to submitter
    try:
        subject = "Quote Request Received - Sedutto Machineworks"
        html_message = render_to_string(
            "emails/submission_confirmation.html",
            {
                "submission": submission,
                "files": files,
                "file_urls": file_urls,
            },
        )

        # Plain text fallback
        text_message = f"""
Thank you for your quote request!

We have received your submission and will review it shortly.

Submission Details:
Submission ID: #{submission.id}
Submitted at: {submission.submitted_at.strftime('%B %d, %Y %I:%M %p')}

Your Notes:
{submission.description or '(No notes provided)'}

Files uploaded: {files.count()}
"""
        for file_url_data in file_urls:
            file = file_url_data["file"]
            url = file_url_data["url"]
            text_message += f"- {file.original_filename} ({file.file_size} bytes)\n"
            text_message += f"  Download: {url}\n"

        text_message += f"\nWe will contact you at {submission.email} regarding your quote request.\n"
        text_message += f"\nThis submission will be kept on file until {submission.expiration_time.strftime('%B %d, %Y')}."

        msg = EmailMultiAlternatives(
            subject=subject,
            body=text_message,
            from_email=settings.DEFAULT_FROM_EMAIL,
            to=[submission.email],
        )
        msg.attach_alternative(html_message, "text/html")
        msg.send()
        submitter_sent = True
    except Exception as e:
        print(f"Error sending submitter email: {e}")

    return (owner_sent, submitter_sent)