email_service.py was 428 lines covering three different concerns:
SMTP transport, OTP/welcome rendering (tightly coupled — same brand
template + theme), and digest rendering (a totally different shape
of email, different layout, different copy cadence). The two halves
changed at different cadences and made the file noisy to navigate.
Extracted render_digest_email + _DIGEST_HTML_TEMPLATE +
_strip_html_to_text to app/services/digest_email.py. SMTP transport
and the OTP/welcome surface stay in email_service.py.
Import sites updated: email_digest_job and test_email_render now
import render_digest_email from digest_email. The OTP/welcome
import sites (auth router, branding tests, test_email_service) are
untouched.
No behaviour change — pure relocation. Templates byte-identical.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Adds render_digest_email(kind, date_str, content_html, unsubscribe_url,
settings_url) -> tuple[str, str, str] to email_service.py, following the
same contract as render_otp_email. Includes _DIGEST_HTML_TEMPLATE with
light/dark palette from branding and _strip_html_to_text for the plain-text
fallback. Unit tests in tests/test_email_render.py cover daily, weekly, and
invalid-kind cases.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
