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import { encodeBase64 } from "@std/encoding/base64";
import { getLogger } from "./logger.ts";
export class Mail {
message_id: string | null = null;
aws_message_id: string | null = null;
constructor(public raw: string) {}
encodeUtf8(): Uint8Array {
const utf8Encoder = new TextEncoder();
// TODO: A problem here is if mail is VERY long, this will block for a long time.
// Maybe some task queue can be used.
return utf8Encoder.encode(this.raw);
}
getRawBase64(): string {
return encodeBase64(this.raw);
}
appendHeaders(
rawMail: string,
headers: [key: string, value: string][],
): string {
const separatorMatch = rawMail.match(/(\r\n|\n)(\r\n|\n)/);
if (separatorMatch == null) {
throw new Error(
"No header/body separator (2 successive EOLs) found. Cannot append headers.",
);
}
if (separatorMatch[1] !== separatorMatch[2]) {
getLogger().warn("Different EOLs (\\r\\n and \\n) found in mail!");
}
const headerStr = headers.map(([k, v]) => `${k}: ${v}${separatorMatch[1]}`)
.join("");
const endOfHeadersIndex = separatorMatch.index! + separatorMatch[1].length;
return rawMail.slice(0, endOfHeadersIndex) + headerStr +
rawMail.slice(endOfHeadersIndex);
}
}
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