82 lines
2.0 KiB
Python
82 lines
2.0 KiB
Python
from collections.abc import Sequence
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from typing import Any, ClassVar, TypeAlias
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from django.core import mail
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from django.template import loader
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import mdformat
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from markdownify import markdownify
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Context: TypeAlias = dict[str, Any]
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class EmailBase:
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subject: ClassVar[str]
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from_email: ClassVar[str | None] = None
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reply_to: ClassVar[Sequence[str] | None] = None
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context: Context
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def __init__(self, context: Context) -> None:
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self.context = context
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def render_body(self) -> str:
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raise NotImplementedError
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@classmethod
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def render(
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cls,
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context: Context,
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to: list[str] | None = None,
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cc: list[str] | None = None,
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bcc: list[str] | None = None,
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) -> mail.EmailMessage:
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self = cls(context)
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body = self.render_body()
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return mail.EmailMessage(
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self.subject,
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body,
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from_email=self.from_email,
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reply_to=self.reply_to,
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to=to,
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cc=cc,
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bcc=bcc,
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)
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class TemplatedMultipartEmail(EmailBase):
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template: ClassVar[str]
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def render_html_body(self) -> str:
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template = loader.get_template(self.template)
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return template.render(self.context)
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def render_body(self, html_body: str) -> str:
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return mdformat.text(markdownify(html_body), extensions={"tables"})
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@classmethod
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def render(
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cls,
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context: Context,
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to: list[str] | None = None,
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cc: list[str] | None = None,
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bcc: list[str] | None = None,
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) -> mail.EmailMessage:
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self = cls(context)
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html_body = self.render_html_body()
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plain_body = self.render_body(html_body)
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return mail.EmailMultiAlternatives(
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self.subject,
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plain_body,
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from_email=self.from_email,
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reply_to=self.reply_to,
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to=to,
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cc=cc,
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bcc=bcc,
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alternatives=[(html_body, "text/html")],
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)
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