"""
Email configuration for thrillwiki project.

This module configures email backends and settings using python-decouple
for consistent environment variable management across the project.

Why python-decouple?
- Already used in base.py for consistency
- Simpler API than django-environ
- Sufficient for our configuration needs
- Better separation of config from code
"""

from decouple import config

# =============================================================================
# Email Backend Configuration
# =============================================================================
# Choose the appropriate email backend based on your environment:
# - Console: django.core.mail.backends.console.EmailBackend (development)
# - ForwardEmail: django_forwardemail.backends.ForwardEmailBackend (production)
# - SMTP: django.core.mail.backends.smtp.EmailBackend (custom SMTP)

EMAIL_BACKEND = config(
    "EMAIL_BACKEND",
    default="django_forwardemail.backends.ForwardEmailBackend"
)

# =============================================================================
# ForwardEmail Configuration
# =============================================================================
# ForwardEmail is a privacy-focused email service that supports custom domains
# https://forwardemail.net/

FORWARD_EMAIL_BASE_URL = config(
    "FORWARD_EMAIL_BASE_URL",
    default="https://api.forwardemail.net"
)
FORWARD_EMAIL_API_KEY = config("FORWARD_EMAIL_API_KEY", default="")
FORWARD_EMAIL_DOMAIN = config("FORWARD_EMAIL_DOMAIN", default="")

# Server email address for sending system emails
SERVER_EMAIL = config("SERVER_EMAIL", default="django_webmaster@thrillwiki.com")

# =============================================================================
# SMTP Configuration
# =============================================================================
# These settings are used when EMAIL_BACKEND is set to SMTP backend
# Configure via individual environment variables or EMAIL_URL

EMAIL_HOST = config("EMAIL_HOST", default="localhost")
EMAIL_PORT = config("EMAIL_PORT", default=587, cast=int)
EMAIL_USE_TLS = config("EMAIL_USE_TLS", default=True, cast=bool)
EMAIL_USE_SSL = config("EMAIL_USE_SSL", default=False, cast=bool)
EMAIL_HOST_USER = config("EMAIL_HOST_USER", default="")
EMAIL_HOST_PASSWORD = config("EMAIL_HOST_PASSWORD", default="")

# =============================================================================
# Email Timeout and Retry Settings
# =============================================================================
# Timeout for email operations in seconds
EMAIL_TIMEOUT = config("EMAIL_TIMEOUT", default=30, cast=int)

# Default from email address
DEFAULT_FROM_EMAIL = config(
    "DEFAULT_FROM_EMAIL",
    default="ThrillWiki <noreply@thrillwiki.com>"
)

# =============================================================================
# Email Subject Prefix
# =============================================================================
# Prefix added to the subject of emails sent by Django admin
EMAIL_SUBJECT_PREFIX = config("EMAIL_SUBJECT_PREFIX", default="[ThrillWiki] ")