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scribe/scraibe/email_sender.py
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Ensure success and error emails always have a subject
- Use EMAIL_SUBJECT_SUCCESS env var for success emails
- Use EMAIL_SUBJECT_ERROR env var for error emails
- Provide safe defaults if env vars are missing or blank
- Add final guard in send_email() to prevent blank subjects
2026-06-15 02:57:09 +00:00

913 lines
27 KiB
Python

"""
Email sender module for ScrAIbe.
Sends transcription outputs (TXT, JSON, etc.) via SMTP.
All credentials are configured via environment variables.
Supports both plain text and HTML email bodies.
Template placeholders are primarily filled via environment variables.
"""
import base64
import json
import logging
import os
import re
import smtplib
import subprocess
import tempfile
from email import encoders
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from typing import Any, Dict, List, Optional
from docx import Document
from docx.oxml import OxmlElement
from docx.oxml.ns import qn
from docx.shared import Inches, Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH
logger = logging.getLogger("scraibe.email_sender")
class EmailError(Exception):
pass
def get_email_config():
"""
Read email configuration from environment variables.
Raises EmailError if required fields are missing.
"""
smtp_host = os.getenv("EMAIL_SMTP_HOST")
smtp_port = os.getenv("EMAIL_SMTP_PORT")
smtp_user = os.getenv("EMAIL_SMTP_USER")
smtp_password = os.getenv("EMAIL_SMTP_PASSWORD")
from_address = os.getenv("EMAIL_FROM_ADDRESS")
use_tls_str = os.getenv("EMAIL_SMTP_USE_TLS", "true").strip().lower()
use_tls = use_tls_str not in ("false", "0", "no")
if not all([smtp_host, smtp_port, smtp_user, smtp_password, from_address]):
raise EmailError(
"Email configuration incomplete. "
"Ensure EMAIL_SMTP_HOST, EMAIL_SMTP_PORT, EMAIL_SMTP_USER, "
"EMAIL_SMTP_PASSWORD, and EMAIL_FROM_ADDRESS are set."
)
return {
"smtp_host": smtp_host,
"smtp_port": int(smtp_port),
"smtp_user": smtp_user,
"smtp_password": smtp_password,
"from_address": from_address,
"use_tls": use_tls,
}
def _load_css(path: str) -> str:
"""
Load CSS file content if it exists.
"""
if not path or not os.path.exists(path):
return ""
with open(path, "r", encoding="utf-8") as f:
return f.read()
def _email_logo_html() -> str:
"""
Return a subtle watermark-style logo for emails.
- Priority:
1) EMAIL_LOGO_URL (direct URL)
2) EMAIL_LOGO_PATH (local file as base64)
- Style: small, faint, bottom-right, non-intrusive.
"""
logo_url = os.getenv("EMAIL_LOGO_URL")
src = logo_url
if not logo_url:
logo_path = os.getenv("EMAIL_LOGO_PATH", "/app/src/misc/logo1.png")
if os.path.exists(logo_path):
try:
with open(logo_path, "rb") as f:
b64 = base64.b64encode(f.read()).decode("utf-8")
src = f"data:image/png;base64,{b64}"
except Exception:
src = None
if not src:
return ""
# Watermark: bottom-right, low opacity, compact
return (
f'<div style="text-align: right; margin-top: 24px; opacity: 0.15;">'
f'<img src="{src}" alt="Logo" style="max-width: 90px; height: auto; display: inline-block;" />'
f'</div>'
)
def _accent_color() -> str:
"""
Accent color for UI and emails.
Default: #7C6DA0
"""
return os.getenv("EMAIL_ACCENT_COLOR", "#7C6DA0")
def build_template_context(**runtime_kwargs: Any) -> Dict[str, Any]:
"""
Build a context dict for templates from:
- environment variables (base, customizable)
- runtime-provided values (override env if present)
Environment variables:
- EMAIL_CONTACT_ADDRESS: value for {contact_email}
- EMAIL_CSS_PATH: path to mail_style.css (optional; we inline it)
- EMAIL_LOGO_URL: URL for email logo (preferred)
- EMAIL_LOGO_PATH: fallback local path for email logo
- EMAIL_ACCENT_COLOR: accent color (default #7C6DA0)
"""
# Load and inline mail_style.css for consistent email styling
css_path = os.getenv("EMAIL_CSS_PATH", "/app/src/misc/mail_style.css")
css_text = _load_css(css_path)
# Build logo HTML (URL or local fallback)
logo_html = _email_logo_html()
# Accent color
accent = _accent_color()
ctx: Dict[str, Any] = {
"contact_email": os.getenv("EMAIL_CONTACT_ADDRESS", "support@example.com"),
"email_css": css_text,
"email_logo": logo_html,
"accent_color": accent,
}
# Runtime values override env if provided
if runtime_kwargs:
ctx.update(runtime_kwargs)
return ctx
def load_template(template_name: str, **runtime_kwargs: Any) -> str:
"""
Load an HTML email template from misc/ and render placeholders.
Expects files like:
/app/src/misc/upload_notification_template.html
/app/src/misc/success_template.html
/app/src/misc/error_notification_template.html
"""
base = os.getenv("SCRAIBE_TEMPLATES_DIR", "/app/src/misc")
path = os.path.join(base, template_name)
if not os.path.exists(path):
raise EmailError(f"Email template not found: {path}")
with open(path, "r", encoding="utf-8") as f:
template = f.read()
# Build context from env + runtime
ctx = build_template_context(**runtime_kwargs)
# Replace {placeholder} style variables safely
try:
return template.format(**ctx)
except KeyError as e:
raise EmailError(f"Missing template variable: {e}")
def send_email(
to: str,
subject: str,
body: str,
html: Optional[str],
attachments: List[str],
cc: Optional[str] = None,
) -> bool:
"""
Send an email with optional HTML body and file attachments.
Args:
to: Comma-separated list of recipient email addresses.
subject: Email subject.
body: Email body (plain text).
html: Email body (HTML), or None.
attachments: List of file paths to attach.
cc: Comma-separated list of CC email addresses (optional).
Returns:
True if sent successfully.
Raises:
EmailError if sending fails.
"""
try:
cfg = get_email_config()
except EmailError as e:
logger.error("Email configuration error: %s", e)
raise
# Parse recipients
to_list = [addr.strip() for addr in to.split(",") if addr.strip()]
cc_list = [addr.strip() for addr in cc.split(",") if addr.strip()] if cc else []
if not to_list:
raise EmailError("No valid 'To' email addresses provided.")
# Ensure subject is never blank
if not subject or not subject.strip():
logger.warning("Subject was blank or missing; using default subject.")
subject = "ScrAIbe: Your transcript is ready"
subject = subject.strip()
# Build message
msg = MIMEMultipart("alternative")
msg["From"] = cfg["from_address"]
msg["To"] = ", ".join(to_list)
if cc_list:
msg["Cc"] = ", ".join(cc_list)
msg["Subject"] = subject
# Attach plain text
msg.attach(MIMEText(body, "plain"))
# Attach HTML if provided
if html:
msg.attach(MIMEText(html, "html"))
# Attach files in a separate multipart/mixed part
if attachments:
mixed = MIMEMultipart("mixed")
mixed.attach(msg)
msg = mixed
for file_path in attachments:
if not os.path.isfile(file_path):
logger.warning("Attachment file not found, skipping: %s", file_path)
continue
try:
with open(file_path, "rb") as f:
part = MIMEBase("application", "octet-stream")
part.set_payload(f.read())
encoders.encode_base64(part)
part.add_header(
"Content-Disposition",
"attachment",
filename=os.path.basename(file_path),
)
msg.attach(part)
except Exception as e:
logger.warning("Failed to attach file %s: %s", file_path, e)
# Connect and send
try:
if cfg["use_tls"]:
server = smtplib.SMTP(cfg["smtp_host"], cfg["smtp_port"], timeout=30)
server.ehlo()
server.starttls()
server.ehlo()
else:
server = smtplib.SMTP(cfg["smtp_host"], cfg["smtp_port"], timeout=30)
server.ehlo()
server.login(cfg["smtp_user"], cfg["smtp_password"])
server.sendmail(
cfg["from_address"],
to_list + cc_list,
msg.as_string(),
)
server.quit()
logger.info(
"Email sent to %s (CC: %s) with subject: %s",
to_list,
cc_list or "None",
subject,
)
return True
except Exception as e:
logger.error("Failed to send email: %s", e)
raise EmailError(f"Failed to send email: {e}")
# ------------ DOCX helpers ------------
def _configure_base_font(doc):
"""
Set base document font to 12pt Courier.
"""
style = doc.styles["Normal"]
style.font.name = "Courier"
style.font.size = Pt(12)
def _configure_section_margins(doc, margin=1.0):
"""
Set uniform margins on all sides (default 1 inch).
"""
for section in doc.sections:
section.left_margin = Inches(margin)
section.right_margin = Inches(margin)
section.top_margin = Inches(margin)
section.bottom_margin = Inches(margin)
def _enable_line_numbering(section, start_at=1, count_by=1, restart=True):
"""
Enable line numbering for a specific section.
"""
sectPr = section._sectPr
# Create the line numbering element: <w:lnNumType>
lnNumType = OxmlElement("w:lnNumType")
lnNumType.set(qn("w:start"), str(start_at))
lnNumType.set(qn("w:countBy"), str(count_by))
# 'eachPage' restarts numbering on every page; 'continuous' keeps it going
restart_mode = "eachPage" if restart else "continuous"
lnNumType.set(qn("w:restart"), restart_mode)
sectPr.append(lnNumType)
def _add_cover_page(doc, doc_type, date, description):
"""
Add a cover page:
- Centered horizontally and vertically using a full-page table.
- Lines:
1) Document type
2) Date (e.g. "June 14, 2026")
3-5) Empty space
6) One-sentence description
"""
# Create a full-page table to center content vertically and horizontally
table = doc.add_table(rows=1, cols=1)
table.autofit = False
cell = table.cell(0, 0)
# Make table span full page width (approx)
cell.width = Inches(6.5)
# Center content inside the cell
for paragraph in cell.paragraphs:
paragraph.alignment = WD_ALIGN_PARAGRAPH.CENTER
# Clear default paragraph
cell.paragraphs[0].clear()
# Line 1: Document type
p_type = cell.add_paragraph()
p_type.alignment = WD_ALIGN_PARAGRAPH.CENTER
run_type = p_type.add_run(doc_type)
run_type.bold = True
run_type.font.name = "Courier"
run_type.font.size = Pt(12)
# Line 2: Date
p_date = cell.add_paragraph()
p_date.alignment = WD_ALIGN_PARAGRAPH.CENTER
run_date = p_date.add_run(date)
run_date.font.name = "Courier"
run_date.font.size = Pt(12)
# Lines 3-5: blank space
for _ in range(3):
cell.add_paragraph()
# Line 6: Description
p_desc = cell.add_paragraph()
p_desc.alignment = WD_ALIGN_PARAGRAPH.CENTER
run_desc = p_desc.add_run(description)
run_desc.font.name = "Courier"
run_desc.font.size = Pt(12)
def _add_transcript_content(doc, text):
"""
Add transcript lines to the document with formatting.
"""
lines = text.strip().split("\n")
for line in lines:
line = line.strip()
if not line:
continue
m = re.match(r"\[(\d+:\d+(?::\d+)?)\]\s*(.+?):\s*(.*)", line)
if m:
ts, speaker, content = m.groups()
p = doc.add_paragraph()
p.paragraph_format.left_indent = Inches(0.25)
run_label = p.add_run(f"[{ts}] {speaker.upper()}:")
run_label.bold = False
run_label.underline = True
run_label.font.name = "Courier"
run_label.font.size = Pt(12)
run_space = p.add_run(" ")
run_space.bold = False
run_space.underline = False
run_space.font.name = "Courier"
run_space.font.size = Pt(12)
run_txt = p.add_run(content.strip())
run_txt.bold = False
run_txt.underline = False
run_txt.font.name = "Courier"
run_txt.font.size = Pt(12)
else:
p = doc.add_paragraph()
run = p.add_run(line)
run.font.name = "Courier"
run.font.size = Pt(12)
def _add_summary_content(doc, text):
"""
Add summary content with heading styles.
"""
heading_count = 0
for line in text.splitlines():
stripped = line.strip()
if not stripped:
continue
# Detect markdown-style headings: #, ##, ###, #### at start of line
m = re.match(r"^(#{1,4})\s+(.*)", stripped)
if m:
heading_count += 1
content = m.group(2).strip()
p = doc.add_paragraph()
p.paragraph_format.space_after = Pt(4)
run = p.add_run(content)
run.font.name = "Courier"
run.font.size = Pt(12)
# Apply formatting based on this heading's ordinal position
if heading_count == 1:
run.bold = True
elif heading_count == 2:
run.italic = True
elif heading_count == 3:
run.underline = True
elif heading_count >= 4:
run.italic = True
run.underline = True
else:
# Normal text line
p = doc.add_paragraph(stripped)
p.paragraph_format.space_after = Pt(4)
# ------------ PDF helpers ------------
def _docx_to_pdf(docx_path: str, output_dir: str) -> str:
"""
Convert a .docx file to PDF using LibreOffice.
Returns the path of the generated PDF.
"""
try:
# Use LibreOffice in headless mode
result = subprocess.run(
[
"libreoffice",
"--headless",
"--convert-to", "pdf",
"--outdir", output_dir,
docx_path,
],
capture_output=True,
text=True,
timeout=60,
)
if result.returncode != 0:
logger.warning("LibreOffice conversion failed: %s", result.stderr)
# LibreOffice creates a PDF with the same base name
base = os.path.splitext(os.path.basename(docx_path))[0]
pdf_path = os.path.join(output_dir, f"{base}.pdf")
if os.path.exists(pdf_path):
return pdf_path
else:
logger.warning("Converted PDF not found at: %s", pdf_path)
return None
except Exception as e:
logger.error("Error converting DOCX to PDF: %s", e)
return None
def _merge_pdfs(input_pdfs: List[str], output_pdf: str) -> bool:
"""
Merge multiple PDF files into a single PDF using PyPDF2.
Returns True on success, False on failure.
"""
try:
from PyPDF2 import PdfMerger
merger = PdfMerger()
for pdf in input_pdfs:
if os.path.exists(pdf):
merger.append(pdf)
merger.write(output_pdf)
merger.close()
return True
except Exception as e:
logger.error("Error merging PDFs: %s", e)
return False
def _add_page_numbers_to_pdf(input_pdf: str, output_pdf: str) -> bool:
"""
Add page numbers to a PDF using reportlab.
Page numbers appear at the bottom-right of each page.
"""
try:
from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import letter
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from PyPDF2 import PdfReader
# Try to use a standard font
font_name = "Courier"
try:
pdfmetrics.registerFont(
TTFont("Courier", "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf")
)
except Exception:
pass
reader = PdfReader(input_pdf)
num_pages = len(reader.pages)
# Create a canvas to add page numbers
c = canvas.Canvas(output_pdf, pagesize=letter)
for page_num in range(num_pages):
page = reader.pages[page_num]
c = canvas.Canvas(output_pdf, pagesize=letter)
# Add page number
c.setFont(font_name, 10)
page_text = f"Page {page_num + 1} of {num_pages}"
text_width = c.stringWidth(page_text, font_name, 10)
x = letter[0] - 1 * 72 - text_width # 1 inch from right
y = 1 * 72 # 1 inch from bottom
c.drawString(x, y, page_text)
c.showPage()
c.save()
return True
except Exception as e:
logger.error("Error adding page numbers to PDF: %s", e)
return False
# ------------ Public DOCX/PDF functions ------------
def create_transcript_docx(
text: str,
filename: str,
include_cover: bool = False,
cover_date: str = "",
cover_desc: str = "",
):
"""
Create a .docx transcript with:
- 1" margins on all sides
- 12pt Courier
- Continuous line numbering on the left (for transcript content only)
- Optional cover page with type, date, and AI-generated description.
"""
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
# 1) Optional cover page (no line numbering)
if include_cover and cover_date and cover_desc:
_add_cover_page(doc, "TRANSCRIPT", cover_date, cover_desc)
doc.add_page_break()
# 2) Enable line numbering for transcript section
_enable_line_numbering(doc.sections[0])
# 3) Transcript content (with line numbering)
_add_transcript_content(doc, text)
doc.save(filename)
def create_summary_docx(
text: str,
filename: str,
include_cover: bool = False,
cover_date: str = "",
cover_desc: str = "",
):
"""
Create a .docx summary with consistent font and heading styles.
Optional cover page with type, date, and AI-generated description.
No line numbering.
"""
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
# 1) Optional cover page
if include_cover and cover_date and cover_desc:
_add_cover_page(doc, "SUMMARY", cover_date, cover_desc)
doc.add_page_break()
# 2) Summary content (no line numbering)
_add_summary_content(doc, text)
doc.save(filename)
def create_combined_docx(
transcript_text: str,
summary_text: str,
filename: str,
transcript_cover_date: str,
transcript_cover_desc: str,
summary_cover_date: str,
summary_cover_desc: str,
):
"""
Create a combined .docx with:
1) Transcript cover page (no line numbering)
2) Page break
3) Summary content (no line numbering)
4) Page break
5) Transcript content (line numbering enabled only here)
Line numbering is restricted to the transcript section only.
"""
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
# 1) Transcript cover page (no line numbering)
_add_cover_page(doc, "TRANSCRIPT", transcript_cover_date, transcript_cover_desc)
doc.add_page_break()
# 3) Summary content (no line numbering)
_add_summary_content(doc, summary_text)
doc.add_page_break()
# 4) Enable line numbering for transcript section
_enable_line_numbering(doc.sections[0])
# 5) Transcript content (with line numbering)
_add_transcript_content(doc, transcript_text)
doc.save(filename)
def generate_pdf_documents(
transcript_text: str,
summary_text: str,
output_dir: str,
transcript_cover_date: str,
transcript_cover_desc: str,
summary_cover_date: str,
summary_cover_desc: str,
) -> Dict[str, str]:
"""
Generate PDF documents for transcript, summary, and combined.
Returns a dict with paths:
- transcript_pdf
- summary_pdf (if summary_text provided)
- combined_pdf (if summary_text provided)
"""
import os
os.makedirs(output_dir, exist_ok=True)
result = {}
# Create temporary directory for intermediate files
with tempfile.TemporaryDirectory() as tmpdir:
# 1) Generate constituent DOCX files
# Transcript cover
transcript_cover_docx = os.path.join(tmpdir, "TRANSCRIPT_COVER.docx")
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
_add_cover_page(doc, "TRANSCRIPT", transcript_cover_date, transcript_cover_desc)
doc.save(transcript_cover_docx)
# Summary cover
summary_cover_docx = os.path.join(tmpdir, "SUMMARY_COVER.docx")
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
_add_cover_page(doc, "SUMMARY", summary_cover_date, summary_cover_desc)
doc.save(summary_cover_docx)
# Transcript (with line numbering)
transcript_docx = os.path.join(tmpdir, "TRANSCRIPT.docx")
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
_enable_line_numbering(doc.sections[0])
_add_transcript_content(doc, transcript_text)
doc.save(transcript_docx)
# Summary (no line numbering)
summary_docx = os.path.join(tmpdir, "SUMMARY.docx")
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
_add_summary_content(doc, summary_text)
doc.save(summary_docx)
# 2) Convert DOCX to PDF
transcript_cover_pdf = _docx_to_pdf(transcript_cover_docx, tmpdir)
summary_cover_pdf = _docx_to_pdf(summary_cover_docx, tmpdir)
transcript_pdf = _docx_to_pdf(transcript_docx, tmpdir)
summary_pdf = _docx_to_pdf(summary_docx, tmpdir)
# 3) Assemble final PDFs
# Transcript PDF: cover + transcript + page numbers
transcript_output_pdf = os.path.join(output_dir, "TRANSCRIPT.pdf")
merged_transcript = os.path.join(tmpdir, "TRANSCRIPT_MERGED.pdf")
if _merge_pdfs([transcript_cover_pdf, transcript_pdf], merged_transcript):
_add_page_numbers_to_pdf(merged_transcript, transcript_output_pdf)
result["transcript_pdf"] = transcript_output_pdf
# Summary PDF: cover + summary + page numbers
if summary_text:
summary_output_pdf = os.path.join(output_dir, "SUMMARY.pdf")
merged_summary = os.path.join(tmpdir, "SUMMARY_MERGED.pdf")
if _merge_pdfs([summary_cover_pdf, summary_pdf], merged_summary):
_add_page_numbers_to_pdf(merged_summary, summary_output_pdf)
result["summary_pdf"] = summary_output_pdf
# Combined PDF: transcript cover + summary + "TRANSCRIPT" header + transcript + page numbers
if summary_text:
# Create a document with "TRANSCRIPT" header before transcript
transcript_header_docx = os.path.join(tmpdir, "TRANSCRIPT_HEADER.docx")
doc = Document()
_configure_base_font(doc)
_configure_section_margins(doc)
# Add "TRANSCRIPT" header
p = doc.add_paragraph()
p.alignment = WD_ALIGN_PARAGRAPH.CENTER
run = p.add_run("TRANSCRIPT")
run.bold = True
run.font.name = "Courier"
run.font.size = Pt(12)
# Page break
doc.add_page_break()
# Enable line numbering for transcript section
_enable_line_numbering(doc.sections[0])
# Transcript content (with line numbering)
_add_transcript_content(doc, transcript_text)
doc.save(transcript_header_docx)
# Convert to PDF
transcript_header_pdf = _docx_to_pdf(transcript_header_docx, tmpdir)
# Assemble combined PDF
combined_output_pdf = os.path.join(output_dir, "COMBINED.pdf")
merged_combined = os.path.join(tmpdir, "COMBINED_MERGED.pdf")
if _merge_pdfs(
[transcript_cover_pdf, summary_pdf, transcript_header_pdf],
merged_combined,
):
_add_page_numbers_to_pdf(merged_combined, combined_output_pdf)
result["combined_pdf"] = combined_output_pdf
return result
def send_success_email(
to: str,
transcript_text: str,
summary_text: str,
attachments: List[str],
task_id: str,
):
"""
Send a success email with attachments.
Subject is customizable via EMAIL_SUBJECT_SUCCESS.
Falls back to a safe default if the env var is missing or blank.
"""
# Read subject from environment; never allow blank
raw_subject = os.getenv("EMAIL_SUBJECT_SUCCESS")
subject = (raw_subject or "").strip()
if not subject:
subject = "ScrAIbe: Your transcript is ready"
logger.info(
"EMAIL_SUBJECT_SUCCESS not set or blank; using default subject: %s", subject
)
else:
logger.info("Using EMAIL_SUBJECT_SUCCESS: %s", subject)
# Build email body
body = f"""
Your transcription is complete.
Task ID: {task_id}
Please find the attached documents:
- Transcript (MD)
- Transcript (DOCX)
- Source JSON
"""
if summary_text:
body += "- Summary (MD)\n- Summary (DOCX)\n"
# Load HTML template
try:
html = load_template(
"success_template.html",
task_id=task_id,
transcript_text=transcript_text[:500],
summary_text=summary_text[:500] if summary_text else "",
)
except EmailError:
html = None
# Send email (send_email has an additional subject guard)
send_email(
to=to,
subject=subject,
body=body,
html=html,
attachments=attachments,
)
def send_error_email(
to: str,
error_message: str,
task_id: str,
):
"""
Send an error email.
Subject is customizable via EMAIL_SUBJECT_ERROR.
Falls back to a safe default if the env var is missing or blank.
"""
# Read subject from environment; never allow blank
raw_subject = os.getenv("EMAIL_SUBJECT_ERROR")
subject = (raw_subject or "").strip()
if not subject:
subject = "ScrAIbe: Error with your transcription request"
logger.info(
"EMAIL_SUBJECT_ERROR not set or blank; using default subject: %s", subject
)
else:
logger.info("Using EMAIL_SUBJECT_ERROR: %s", subject)
# Build email body
body = f"""
There was an error processing your transcription.
Task ID: {task_id}
Error: {error_message}
"""
# Load HTML template
try:
html = load_template(
"error_notification_template.html",
task_id=task_id,
error_message=error_message,
)
except EmailError:
html = None
# Send email (send_email has an additional subject guard)
send_email(
to=to,
subject=subject,
body=body,
html=html,
attachments=[],
)