"""
Email service functions for the Flask job application system.
"""
from datetime import datetime
from flask import url_for, current_app
from flask_mail import Message
from app import mail


def send_resume_email(email, session_id, job_name):
    """Send email with resume link"""
    resume_link = url_for('resume_application', session_id=session_id, _external=True)

    subject = f"Ihre Bewerbung bei {current_app.config['COMPANY_NAME']} - Link zum Fortsetzen"
    body = f"""Guten Tag,

vielen Dank für Ihr Interesse an der Position "{job_name}" bei {current_app.config['COMPANY_NAME']}.

Sie können Ihre Bewerbung jederzeit über den folgenden Link fortsetzen:
{resume_link}

Dieser Link bleibt gültig und Sie können Ihre Bewerbung jederzeit bearbeiten.

Mit freundlichen Grüßen
{current_app.config['COMPANY_NAME']}
"""

    try:
        msg = Message(subject=subject, recipients=[email], body=body)
        mail.send(msg)
        return True
    except Exception as e:
        current_app.logger.error(f"Failed to send email: {e}")
        return False


def send_hr_notification(session_id, app_data):
    """Send HR notification email when application is submitted"""
    if not current_app.config.get('HR_EMAIL'):
        current_app.logger.warning("HR_EMAIL not configured, skipping HR notification")
        return False

    # Build application URL
    application_url = f"{current_app.config['APPLICATION_URL_BASE']}/application/{session_id}/"

    # Get personal info
    personal_info = app_data.get('personal_info', {})
    firstname = personal_info.get('firstname', 'N/A')
    name = personal_info.get('name', 'N/A')
    email = app_data.get('email', 'N/A')
    job_name = app_data.get('job_name', 'N/A')
    file_count = len(app_data.get('uploaded_files', []))

    # Format timestamp
    submitted_at = app_data.get('submitted_at', datetime.now().isoformat())
    try:
        timestamp = datetime.fromisoformat(submitted_at).strftime('%d.%m.%Y %H:%M')
    except (ValueError, TypeError):
        timestamp = submitted_at

    subject = f"Neue Bewerbung eingegangen: {job_name}"
    body = f"""Sehr geehrtes HR-Team,

es ist eine neue Bewerbung eingegangen:

Position: {job_name}
Name: {firstname} {name}
E-Mail: {email}
Eingereicht am: {timestamp}
Anzahl der hochgeladenen Dokumente: {file_count}

Sie können die vollständige Bewerbung hier einsehen:
{application_url}

Mit freundlichen Grüßen,
Ihr Bewerbungssystem
"""

    try:
        msg = Message(subject=subject, recipients=[current_app.config['HR_EMAIL']], body=body)
        mail.send(msg)
        return True
    except Exception as e:
        current_app.logger.error(f"Failed to send HR notification email: {e}")
        return False