Добавлена отправка накладных на почту

2026-05-24 00:55:09 +03:00
parent 5526f90cb3
commit 50124fb2c9
36 changed files with 1615 additions and 22 deletions
@@ -0,0 +1,135 @@
+"""SMTP e-mail adapter built on top of aiosmtplib."""
+
+from email.message import EmailMessage
+from typing import Protocol
+
+import aiosmtplib
+import structlog
+
+log = structlog.get_logger(__name__)
+
+
+class SMTPEmailSenderError(Exception):
+    """Raised when the SMTP delivery fails."""
+
+
+class SMTPSendFn(Protocol):
+    async def __call__(
+        self,
+        message: EmailMessage,
+        *,
+        hostname: str,
+        port: int,
+        username: str | None,
+        password: str | None,
+        use_tls: bool,
+        start_tls: bool,
+        timeout: float,
+    ) -> object: ...
+
+
+class SMTPEmailSender:
+    def __init__(
+        self,
+        *,
+        smtp_host: str,
+        smtp_port: int,
+        username: str,
+        password: str,
+        from_address: str,
+        use_tls: bool = True,
+        timeout_seconds: float = 10.0,
+        send: SMTPSendFn | None = None,
+    ) -> None:
+        self._smtp_host = smtp_host
+        self._smtp_port = smtp_port
+        self._username = username
+        self._password = password
+        self._from_address = from_address
+        self._use_tls = use_tls
+        self._timeout_seconds = timeout_seconds
+        self._send = send or _default_send
+
+    async def send_email(
+        self,
+        *,
+        to: str,
+        subject: str,
+        body: str,
+        attachment_bytes: bytes,
+        attachment_filename: str,
+    ) -> None:
+        message = self._build_message(
+            to=to,
+            subject=subject,
+            body=body,
+            attachment_bytes=attachment_bytes,
+            attachment_filename=attachment_filename,
+        )
+        try:
+            await self._send(
+                message,
+                hostname=self._smtp_host,
+                port=self._smtp_port,
+                username=self._username or None,
+                password=self._password or None,
+                use_tls=self._use_tls and self._smtp_port == 465,
+                start_tls=self._use_tls and self._smtp_port != 465,
+                timeout=self._timeout_seconds,
+            )
+        except Exception as exc:
+            log.warning(
+                "smtp_send_failed",
+                smtp_host=self._smtp_host,
+                smtp_port=self._smtp_port,
+                to=to,
+                error=str(exc),
+            )
+            raise SMTPEmailSenderError(
+                f"SMTP send to {to} failed: {exc}"
+            ) from exc
+
+    def _build_message(
+        self,
+        *,
+        to: str,
+        subject: str,
+        body: str,
+        attachment_bytes: bytes,
+        attachment_filename: str,
+    ) -> EmailMessage:
+        message = EmailMessage()
+        message["From"] = self._from_address
+        message["To"] = to
+        message["Subject"] = subject
+        message.set_content(body)
+        message.add_attachment(
+            attachment_bytes,
+            maintype="application",
+            subtype="pdf",
+            filename=attachment_filename,
+        )
+        return message
+
+
+async def _default_send(
+    message: EmailMessage,
+    *,
+    hostname: str,
+    port: int,
+    username: str | None,
+    password: str | None,
+    use_tls: bool,
+    start_tls: bool,
+    timeout: float,
+) -> object:
+    return await aiosmtplib.send(
+        message,
+        hostname=hostname,
+        port=port,
+        username=username,
+        password=password,
+        use_tls=use_tls,
+        start_tls=start_tls,
+        timeout=timeout,
+    )