| 1 | """ |
| 2 | SMTP email sender. |
| 3 | |
| 4 | No agent/tool dependencies. |
| 5 | """ |
| 6 | |
| 7 | import asyncio |
| 8 | import smtplib |
| 9 | from email.mime.text import MIMEText |
| 10 | from email.mime.multipart import MIMEMultipart |
| 11 | from email.mime.base import MIMEBase |
| 12 | from email import encoders |
| 13 | from dataclasses import dataclass |
| 14 | |
| 15 | from helpers.errors import format_error |
| 16 | from helpers.print_style import PrintStyle |
| 17 | |
| 18 | |
| 19 | # ------------------------------------------------------------------ |
| 20 | # Data models |
| 21 | # ------------------------------------------------------------------ |
| 22 | |
| 23 | SMTP_TIMEOUT: int = 30 |
| 24 | |
| 25 | @dataclass |
| 26 | class SmtpConfig: |
| 27 | server: str |
| 28 | port: int = 587 |
| 29 | username: str = "" |
| 30 | password: str = "" |
| 31 | use_tls: bool = True |
| 32 | |
| 33 | |
| 34 | # ------------------------------------------------------------------ |
| 35 | # Send reply |
| 36 | # ------------------------------------------------------------------ |
| 37 | |
| 38 | async def send_reply( |
| 39 | config: SmtpConfig, |
| 40 | to: str, |
| 41 | subject: str, |
| 42 | body: str, |
| 43 | in_reply_to: str = "", |
| 44 | references: str = "", |
| 45 | attachments: list[tuple[str, bytes]] | None = None, |
| 46 | ) -> str | None: |
| 47 | loop = asyncio.get_event_loop() |
| 48 | |
| 49 | def _sync_send(): |
| 50 | import markdown |
| 51 | |
| 52 | html_body = markdown.markdown(body, extensions=['extra', 'nl2br']) |
| 53 | html_content = f""" |
| 54 | <html> |
| 55 | <head> |
| 56 | <style> |
| 57 | body {{ font-family: sans-serif; line-height: 1.5; }} |
| 58 | blockquote {{ border-left: 4px solid #ccc; margin: 0; padding-left: 1em; color: #666; }} |
| 59 | pre {{ background-color: #f6f8fa; padding: 1em; border-radius: 4px; overflow-x: auto; }} |
| 60 | code {{ font-family: monospace; background-color: #f6f8fa; padding: 0.2em 0.4em; border-radius: 3px; }} |
| 61 | pre code {{ padding: 0; background-color: transparent; }} |
| 62 | </style> |
| 63 | </head> |
| 64 | <body> |
| 65 | {html_body} |
| 66 | </body> |
| 67 | </html> |
| 68 | """ |
| 69 | |
| 70 | if attachments: |
| 71 | msg = MIMEMultipart("mixed") |
| 72 | |
| 73 | alt_part = MIMEMultipart("alternative") |
| 74 | alt_part.attach(MIMEText(body, "plain", "utf-8")) |
| 75 | alt_part.attach(MIMEText(html_content, "html", "utf-8")) |
| 76 | msg.attach(alt_part) |
| 77 | |
| 78 | for filename, content in attachments: |
| 79 | part = MIMEBase("application", "octet-stream") |
| 80 | part.set_payload(content) |
| 81 | encoders.encode_base64(part) |
| 82 | part.add_header( |
| 83 | "Content-Disposition", |
| 84 | f"attachment; filename={filename}", |
| 85 | ) |
| 86 | msg.attach(part) |
| 87 | else: |
| 88 | msg = MIMEMultipart("alternative") |
| 89 | msg.attach(MIMEText(body, "plain", "utf-8")) |
| 90 | msg.attach(MIMEText(html_content, "html", "utf-8")) |
| 91 | |
| 92 | msg["From"] = config.username |
| 93 | msg["To"] = to |
| 94 | msg["Subject"] = subject |
| 95 | |
| 96 | if in_reply_to: |
| 97 | msg["In-Reply-To"] = in_reply_to |
| 98 | msg["References"] = references or in_reply_to |
| 99 | |
| 100 | if config.use_tls: |
| 101 | with smtplib.SMTP(config.server, config.port, timeout=SMTP_TIMEOUT) as server: |
| 102 | server.ehlo() |
| 103 | server.starttls() |
| 104 | server.ehlo() |
| 105 | server.login(config.username, config.password) |
| 106 | server.send_message(msg) |
| 107 | else: |
| 108 | with smtplib.SMTP_SSL(config.server, config.port, timeout=SMTP_TIMEOUT) as server: |
| 109 | server.login(config.username, config.password) |
| 110 | server.send_message(msg) |
| 111 | |
| 112 | try: |
| 113 | await loop.run_in_executor(None, _sync_send) |
| 114 | PrintStyle.success(f"Email sent to {to}: {subject}") |
| 115 | return None |
| 116 | except Exception as e: |
| 117 | error = format_error(e) |
| 118 | PrintStyle.error(f"Email send failed: {error}") |
| 119 | return error |
| 120 | |
| 121 | |
| 122 | # ------------------------------------------------------------------ |
| 123 | # Connection test (auth only, no email sent) |
| 124 | # ------------------------------------------------------------------ |
| 125 | |
| 126 | async def test_smtp(config: SmtpConfig) -> str | None: |
| 127 | loop = asyncio.get_event_loop() |
| 128 | |
| 129 | def _sync_test(): |
| 130 | if config.use_tls: |
| 131 | with smtplib.SMTP(config.server, config.port, timeout=SMTP_TIMEOUT) as server: |
| 132 | server.ehlo() |
| 133 | server.starttls() |
| 134 | server.ehlo() |
| 135 | server.login(config.username, config.password) |
| 136 | else: |
| 137 | with smtplib.SMTP_SSL(config.server, config.port, timeout=SMTP_TIMEOUT) as server: |
| 138 | server.login(config.username, config.password) |
| 139 | |
| 140 | try: |
| 141 | await loop.run_in_executor(None, _sync_test) |
| 142 | return None |
| 143 | except Exception as e: |
| 144 | return format_error(e) |