prettier

2024-12-15 02:07:48 -08:00 · 2024-12-15 02:07:48 -08:00 · c4385abb33
commit c4385abb33
parent 4f1e974623
3 changed files with 116 additions and 72 deletions
--- a/src/api.ts
+++ b/src/api.ts
@ -1,5 +1,6 @@
-import { transformDurations } from "./duration";
+import { parse } from "./duration";
 import { perform } from "./email";
+import type { EmailJob } from "./job";
 import { ConsoleLogger } from "./logger";

 export const main = (port: number) => {
@ -10,12 +11,17 @@ export const main = (port: number) => {

      const url = new URL(req.url);
      if (req.method === "POST" && url.pathname === "/api/email") {
-        const prevalidatedJob = transformDurations(await req.json());
-        if (prevalidatedJob._tag === "Left") {
-          return new Response(prevalidatedJob.left, { status: 400 });
+        const prevalidatedJob = await req.json();
+        const interval = parse(prevalidatedJob.readRetry.interval);
+        if (interval._tag === "Left") {
+          return new Response(interval.left, { status: 400 });
        }
-        const job = prevalidatedJob.right;
-        
+        prevalidatedJob.readRetry.interval = interval;
+        const job: EmailJob = {
+          ...prevalidatedJob,
+          readRetry: { ...prevalidatedJob.readRetry, interval },
+        };
+
        const jobInsensitive = structuredClone(job);
        jobInsensitive.from.username = "****REDACTED****";
        jobInsensitive.from.password = "****REDACTED****";
--- a/src/duration.ts
+++ b/src/duration.ts
@ -154,26 +154,3 @@ export const parse = (duration: string): E.Either<string, Duration> => {
    E.map(build),
  );
 };
-
-export const transformDurations = (obj: any): E.Either<string, any> => {
-  const transform = (o: any): E.Either<string, any> => {
-    const entries = Object.entries(o);
-
-    for (let [key, value] of entries) {
-      if (key === "duration" && typeof value === "string") {
-        return parse(value);
-      } else if (typeof value === "object" && value !== null) {
-        const result = transform(value);
-        if (E.isLeft(result)) {
-          return result;
-        } else {
-          o[key] = result.right;
-        }
-      }
-    }
-
-    return E.right(o);
-  };
-
-  return transform(obj);
-}
--- a/src/email.ts
+++ b/src/email.ts
@ -4,16 +4,27 @@ import * as O from "fp-ts/lib/Option";
 import { createTransport } from "nodemailer";
 import { toError } from "fp-ts/lib/Either";
 import { pipe } from "fp-ts/lib/function";
-import { ImapFlow, type FetchMessageObject, type FetchQueryObject, type MailboxLockObject } from "imapflow";
+import {
+  ImapFlow,
+  type FetchMessageObject,
+  type FetchQueryObject,
+  type MailboxLockObject,
+} from "imapflow";
 import * as IO from "fp-ts/lib/IO";
 import * as T from "fp-ts/lib/Task";
 import { ConsoleLogger, type Logger } from "./logger";

 interface ImapClientI {
-  fetchAll: (range: string, options: FetchQueryObject) => Promise<FetchMessageObject[]>;
+  fetchAll: (
+    range: string,
+    options: FetchQueryObject,
+  ) => Promise<FetchMessageObject[]>;
  connect: () => Promise<void>;
  getMailboxLock: (mailbox: string) => Promise<MailboxLockObject>;
-  messageDelete: (uids: number[], opts: Record<string, any>) => Promise<boolean>;
+  messageDelete: (
+    uids: number[],
+    opts: Record<string, any>,
+  ) => Promise<boolean>;
  logout: () => Promise<void>;
 }

@ -34,8 +45,13 @@ class ErrorWithLock extends Error {
  }
 }

-const ToErrorWithLock = (lock?: MailboxLockObject, imap?: ImapClientI) => (error: unknown) =>
-  new ErrorWithLock(error instanceof Error ? error.message : "Unknown error", lock, imap);
+const ToErrorWithLock =
+  (lock?: MailboxLockObject, imap?: ImapClientI) => (error: unknown) =>
+    new ErrorWithLock(
+      error instanceof Error ? error.message : "Unknown error",
+      lock,
+      imap,
+    );

 /**
 * Generate a unique email.
@ -43,31 +59,42 @@ const ToErrorWithLock = (lock?: MailboxLockObject, imap?: ImapClientI) => (error
 * @param to is the email to send to.
 * @returns an {@link Email}.
 */
-type EmailGenerator = (from: EmailFromInstruction, to: EmailToInstruction) => IO.IO<Email>;
-const generateEmail: EmailGenerator = (from: EmailFromInstruction, to: EmailToInstruction) => () => ({
-  from: from.email,
-  to: to.email,
-  subject: [new Date().toISOString(), crypto.randomUUID()].join(" | "),
-  text: crypto.randomUUID()
-});
+type EmailGenerator = (
+  from: EmailFromInstruction,
+  to: EmailToInstruction,
+) => IO.IO<Email>;
+const generateEmail: EmailGenerator =
+  (from: EmailFromInstruction, to: EmailToInstruction) => () => ({
+    from: from.email,
+    to: to.email,
+    subject: [new Date().toISOString(), crypto.randomUUID()].join(" | "),
+    text: crypto.randomUUID(),
+  });

 /**
 * Get the transport layer for a mailbox to send a piece of mail.
 * @param param0 is the mailbox to send from.
 * @returns a function that takes an email and sends it.
 */
-type GetSendEmail = (from: EmailFromInstruction) => (email: Email) => TE.TaskEither<Error, Email>;
-const getSendTransport: GetSendEmail = ({ username, password, server, send_port }) => {
+type GetSendEmail = (
+  from: EmailFromInstruction,
+) => (email: Email) => TE.TaskEither<Error, Email>;
+const getSendTransport: GetSendEmail = ({
+  username,
+  password,
+  server,
+  send_port,
+}) => {
  const transport = createTransport({
    host: server,
    port: send_port,
    auth: {
      user: username,
-      pass: password
+      pass: password,
    },
    tls: {
-      rejectUnauthorized: false
-    }
+      rejectUnauthorized: false,
+    },
  });
  return (email: Email) =>
    TE.tryCatch(
@ -79,9 +106,9 @@ const getSendTransport: GetSendEmail = ({ username, password, server, send_port
            } else {
              resolve(email);
            }
-          })
+          }),
        ),
-      toError
+      toError,
    );
 };

@ -90,7 +117,9 @@ const getSendTransport: GetSendEmail = ({ username, password, server, send_port
 * @param param0 is the mailbox to read from.
 * @returns a Right({@link ImapFlow}) if it connected, else an Left(error).
 */
-type GetImapClient = (to: EmailToInstruction) => TE.TaskEither<Error, ImapClientI>;
+type GetImapClient = (
+  to: EmailToInstruction,
+) => TE.TaskEither<Error, ImapClientI>;
 const getImap: GetImapClient = ({ username, password, server, read_port }) => {
  const imap = new ImapFlow({
    logger: false,
@ -99,8 +128,8 @@ const getImap: GetImapClient = ({ username, password, server, read_port }) => {
    secure: true,
    auth: {
      user: username,
-      pass: password
-    }
+      pass: password,
+    },
  });
  return TE.tryCatch(() => imap.connect().then(() => imap), toError);
 };
@ -109,16 +138,18 @@ const getImap: GetImapClient = ({ username, password, server, read_port }) => {
 * @param imap is the Imap client to fetch messages from.
 * @returns a Right({@link FetchMessageObject}[]) if successful, else a Left(error).
 */
-const fetchMessages = (imap: ImapClientI): TE.TaskEither<Error, FetchMessageObject[]> =>
+const fetchMessages = (
+  imap: ImapClientI,
+): TE.TaskEither<Error, FetchMessageObject[]> =>
  TE.tryCatch(
    () =>
      imap.fetchAll("*", {
        uid: true,
        envelope: true,
        headers: true,
-        bodyParts: ["text"]
+        bodyParts: ["text"],
      }),
-    toError
+    toError,
  );

 /**
@ -129,7 +160,8 @@ const fetchMessages = (imap: ImapClientI): TE.TaskEither<Error, FetchMessageObje
 type EmailMatcher = (email: Email) => (message: FetchMessageObject) => boolean;
 const matchesEmail: EmailMatcher = (email) => (message) => {
  const subjectMatches = email.subject === message.envelope.subject;
-  const bodyMatches = message.bodyParts.get("text")?.toString().trim() === email.text.trim();
+  const bodyMatches =
+    message.bodyParts.get("text")?.toString().trim() === email.text.trim();
  const headers = message.headers.toLocaleString();
  const fromMatches = headers.includes(`Return-Path: <${email.from}>`);
  const toMatches = headers.includes(`Delivered-To: ${email.to}`);
@ -151,7 +183,13 @@ type FindEmailUidInInbox = (
  pollIntervalMs: number,
  logger?: Logger,
 ) => TE.TaskEither<Error, number>;
-const findEmailUidInInbox: FindEmailUidInInbox = (imap, equalsEmail, retries, pollIntervalMs, logger = ConsoleLogger) =>
+const findEmailUidInInbox: FindEmailUidInInbox = (
+  imap,
+  equalsEmail,
+  retries,
+  pollIntervalMs,
+  logger = ConsoleLogger,
+) =>
  pipe(
    fetchMessages(imap),
    TE.flatMap((messages) => {
@ -164,17 +202,25 @@ const findEmailUidInInbox: FindEmailUidInInbox = (imap, equalsEmail, retries, po
    TE.fold(
      (e) =>
        pipe(
-          TE.fromIO(logger.log(`failed to find email; ${retries} retries left.`)),
-          TE.chain(() => (retries === 0 ? TE.left(e) : T.delay(pollIntervalMs)(TE.right(null)))),
-          TE.chain(() => findEmailUidInInbox(imap, equalsEmail, retries - 1, pollIntervalMs))
+          TE.fromIO(
+            logger.log(`failed to find email; ${retries} retries left.`),
+          ),
+          TE.chain(() =>
+            retries === 0
+              ? TE.left(e)
+              : T.delay(pollIntervalMs)(TE.right(null)),
+          ),
+          TE.chain(() =>
+            findEmailUidInInbox(imap, equalsEmail, retries - 1, pollIntervalMs),
+          ),
        ),
      (s) =>
        pipe(
          s,
          TE.of,
-          TE.tap(() => TE.fromIO(logger.log("Email succeeded")))
-        )
-    )
+          TE.tap(() => TE.fromIO(logger.log("Email succeeded"))),
+        ),
+    ),
  );

 export type EmailJobDependencies = {
@ -196,23 +242,35 @@ export const perform = (
    getSendImpl = getSendTransport,
    getImapImpl = getImap,
    findEmailUidInInboxImpl = findEmailUidInInbox,
-    matchesEmailImpl = matchesEmail
-  }: Partial<EmailJobDependencies> = {}
+    matchesEmailImpl = matchesEmail,
+  }: Partial<EmailJobDependencies> = {},
 ): TE.TaskEither<Error, boolean> =>
  pipe(
    // arrange.
    TE.fromIO(generateEmailImpl(from, to)),
    TE.bindTo("email"),
    // act.
-    TE.tap(({ email }) => pipe(getSendImpl(from)(email), TE.mapLeft(ToErrorWithLock()))),
+    TE.tap(({ email }) =>
+      pipe(getSendImpl(from)(email), TE.mapLeft(ToErrorWithLock())),
+    ),
    TE.bind("imap", () => pipe(getImapImpl(to), TE.mapLeft(ToErrorWithLock()))),
-    TE.bind("mailboxLock", ({ imap }) => TE.tryCatch(() => imap.getMailboxLock("INBOX"), ToErrorWithLock(undefined, imap))),
+    TE.bind("mailboxLock", ({ imap }) =>
+      TE.tryCatch(
+        () => imap.getMailboxLock("INBOX"),
+        ToErrorWithLock(undefined, imap),
+      ),
+    ),
    // "assert".
    TE.bind("uid", ({ imap, email, mailboxLock }) =>
      pipe(
-        findEmailUidInInboxImpl(imap, matchesEmailImpl(email), retries, interval),
-        TE.mapLeft(ToErrorWithLock(mailboxLock, imap))
-      )
+        findEmailUidInInboxImpl(
+          imap,
+          matchesEmailImpl(email),
+          retries,
+          interval,
+        ),
+        TE.mapLeft(ToErrorWithLock(mailboxLock, imap)),
+      ),
    ),
    // cleanup.
    TE.bind("deleted", ({ imap, uid, mailboxLock }) =>
@ -228,7 +286,10 @@ export const perform = (
        }
        if (O.isSome(e.imap)) {
          const imap = e.imap.value;
-          return pipe(TE.tryCatch(() => imap.logout(), toError), TE.flatMap(() => TE.left(e)));
+          return pipe(
+            TE.tryCatch(() => imap.logout(), toError),
+            TE.flatMap(() => TE.left(e)),
+          );
        }
        return TE.left(e);
      },
@ -236,6 +297,6 @@ export const perform = (
        mailboxLock.release();
        imap.logout();
        return TE.right(deleted);
-      }
-    )
+      },
+    ),
  );