#!/usr/bin/env python3
"""
Send a test email to yourself to verify SMTP and template rendering.
Usage: python3 test_send.py your@email.com
"""
import sys, os, smtplib
from pathlib import Path
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

BASE = Path(__file__).parent
ENV_FILE = BASE / '.env'

def load_env():
    if ENV_FILE.exists():
        with open(ENV_FILE) as f:
            for line in f:
                line = line.strip()
                if line and not line.startswith('#') and '=' in line:
                    k, v = line.split('=', 1)
                    os.environ.setdefault(k.strip(), v.strip())

load_env()

SMTP_SERVER = os.environ.get('SMTP_SERVER', 'smtp.zoho.eu')
SMTP_PORT   = int(os.environ.get('SMTP_PORT', '587'))
SMTP_USER   = os.environ.get('SMTP_USERNAME', '')
SMTP_PASS   = os.environ.get('SMTP_PASSWORD', '')
FROM_NAME   = os.environ.get('FROM_NAME', 'Hermithire')
FROM_EMAIL  = os.environ.get('FROM_EMAIL', SMTP_USER)

if len(sys.argv) < 2:
    print('Usage: python3 test_send.py recipient@email.com [1|2]')
    print('  1 = initial email (default)')
    print('  2 = follow-up email')
    sys.exit(1)

TO_EMAIL = sys.argv[1]
TOUCH    = int(sys.argv[2]) if len(sys.argv) > 2 else 1

template_file = BASE / 'templates' / f'email_{TOUCH}_{"initial" if TOUCH == 1 else "followup"}.html'

with open(template_file, encoding='utf-8') as f:
    html = f.read()

# Fill in test values
html = html.replace('{{first_name}}', 'Archie')
html = html.replace('{{full_name}}', 'Archie Test')
html = html.replace('{{organisation}}', 'Test Organisation')
html = html.replace('{{segment}}', 'press')
html = html.replace('{{unsubscribe_url}}', 'https://hermithire.com/unsubscribe?test=1')
html = html.replace('{{email}}', TO_EMAIL)

subject = (
    'TEST: An Unusual Invitation — Hermithire' if TOUCH == 1
    else 'TEST: We Understand. Hermits Are Patient. — Hermithire'
)

msg = MIMEMultipart('alternative')
msg['Subject']  = subject
msg['From']     = f'{FROM_NAME} <{FROM_EMAIL}>'
msg['To']       = TO_EMAIL
msg['Reply-To'] = FROM_EMAIL

msg.attach(MIMEText('Test plain text version. View HTML version for full experience.', 'plain'))
msg.attach(MIMEText(html, 'html'))

print(f'Connecting to {SMTP_SERVER}:{SMTP_PORT}...')
try:
    server = smtplib.SMTP(SMTP_SERVER, SMTP_PORT)
    server.ehlo()
    server.starttls()
    server.ehlo()
    server.login(SMTP_USER, SMTP_PASS)
    print(f'Logged in as {SMTP_USER}')
    server.sendmail(FROM_EMAIL, [TO_EMAIL], msg.as_string())
    server.quit()
    print(f'✓ Test email (touch {TOUCH}) sent to {TO_EMAIL}')
    print(f'  Check your inbox and verify the HTML renders correctly.')
    print(f'  Then run: python3 campaign.py send --touch 1 --dry-run')
except Exception as e:
    print(f'✗ Error: {e}')
    print()
    print('Common fixes:')
    print('  1. Generate an App Password in Zoho Mail Settings → Security → App Passwords')
    print('  2. Make sure SMTP_USERNAME matches your Zoho sending address exactly')
    print('  3. Check SMTP_SERVER: use smtp.zoho.eu (EU) or smtp.zoho.com (US)')