feat(deno): move deno (mail-server) to top level.

1 files changed, 272 insertions, 108 deletions

diff --git a/deno/mail-relay/aws/app.ts b/deno/mail-relay/aws/app.ts
index 1fda64e..685d7a9 100644
--- a/deno/mail-relay/aws/app.ts
+++ b/deno/mail-relay/aws/app.ts
@@ -1,113 +1,266 @@
+import { join } from "@std/path";
 import { parseArgs } from "@std/cli";
 import { z } from "zod";
+import { Hono } from "hono";
 import { zValidator } from "@hono/zod-validator";
+import { FetchHttpHandler } from "@smithy/fetch-http-handler";
 
-import log from "../log.ts";
-import config from "../config.ts";
-import { AppBase } from "../app.ts";
-import { AwsContext } from "./context.ts";
+import { Logger } from "@crupest/base/log";
+import { ConfigDefinition, ConfigProvider } from "@crupest/base/config";
+import { CronTask } from "@crupest/base/cron";
+
+import { DbService } from "../db.ts";
+import { Mail } from "../mail.ts";
 import {
-  AwsMailDeliverer,
   AwsMailMessageIdRewriteHook,
   AwsMailMessageIdSaveHook,
-} from "./deliver.ts";
-import { AwsMailRetriever } from "./retriever.ts";
-
-export class AwsRelayApp extends AppBase {
-  readonly #aws = new AwsContext();
-  readonly #retriever;
-  protected readonly outboundDeliverer = new AwsMailDeliverer(this.#aws);
-
-  constructor() {
-    super();
-    this.#retriever = new AwsMailRetriever(this.#aws, this.inboundDeliverer);
-
-    this.outboundDeliverer.preHooks.push(
-      new AwsMailMessageIdRewriteHook(this.db),
-    );
-    this.outboundDeliverer.postHooks.push(
-      new AwsMailMessageIdSaveHook(this.db),
-    );
-
-    this.hono.post(
-      `/${config.get("awsInboundPath")}`,
-      async (ctx, next) => {
-        const auth = ctx.req.header("Authorization");
-        if (auth !== config.get("awsInboundKey")) {
-          return ctx.json({ "msg": "Bad auth!" }, 403);
-        }
-        await next();
-      },
-      zValidator(
-        "json",
-        z.object({
-          key: z.string(),
-          recipients: z.optional(z.array(z.string())),
-        }),
-      ),
-      async (ctx) => {
-        const { key, recipients } = ctx.req.valid("json");
-        await this.#retriever.deliverS3Mail(key, recipients);
-        return ctx.json({ "msg": "Done!" });
-      },
-    );
-  }
+} from "./mail.ts";
+import { AwsMailDeliverer } from "./deliver.ts";
+import { AwsMailFetcher, AwsS3MailConsumer } from "./fetch.ts";
+import { createInbound, createHono, sendMail, createSmtp } from "../app.ts";
 
-  realServe() {
-    this.createCron({
-      name: "live-mail-recycler",
-      interval: 6 * 3600 * 1000,
-      callback: () => {
-        return this.#retriever.recycleLiveMails();
-      },
-      startNow: true,
-    });
-
-    return this.serve();
-  }
+const PREFIX = "crupest-mail-server";
+const CONFIG_DEFINITIONS = {
+  dataPath: {
+    description: "Path to save app persistent data.",
+    default: ".",
+  },
+  mailDomain: {
+    description:
+      "The part after `@` of an address. Used to determine local recipients.",
+  },
+  httpHost: {
+    description: "Listening address for http server.",
+    default: "0.0.0.0",
+  },
+  httpPort: { description: "Listening port for http server.", default: "2345" },
+  smtpHost: {
+    description: "Listening address for dumb smtp server.",
+    default: "127.0.0.1",
+  },
+  smtpPort: {
+    description: "Listening port for dumb smtp server.",
+    default: "2346",
+  },
+  ldaPath: {
+    description: "full path of lda executable",
+    default: "/dovecot/libexec/dovecot/dovecot-lda",
+  },
+  inboundFallback: {
+    description: "comma separated addresses used as fallback recipients",
+    default: "",
+  },
+  awsInboundPath: {
+    description: "(random set) path for aws sns",
+  },
+  awsInboundKey: {
+    description: "(random set) http header Authorization for aws sns",
+  },
+  awsRegion: {
+    description: "aws region",
+  },
+  awsUser: {
+    description: "aws access key id",
+  },
+  awsPassword: {
+    description: "aws secret access key",
+    secret: true,
+  },
+  awsMailBucket: {
+    description: "aws s3 bucket saving raw mails",
+    secret: true,
+  },
+} as const satisfies ConfigDefinition;
+
+function createAwsOptions({
+  user,
+  password,
+  region,
+}: {
+  user: string;
+  password: string;
+  region: string;
+}) {
+  return {
+    credentials: () =>
+      Promise.resolve({
+        accessKeyId: user,
+        secretAccessKey: password,
+      }),
+    requestHandler: new FetchHttpHandler(),
+    region,
+  };
+}
 
-  readonly cli = {
-    "init": (_: unknown) => {
-      log.info("Just init!");
-      return Promise.resolve();
+function createOutbound(
+  logger: Logger,
+  awsOptions: ReturnType<typeof createAwsOptions>,
+  db: DbService,
+) {
+  const deliverer = new AwsMailDeliverer(logger, awsOptions);
+  deliverer.preHooks.push(
+    new AwsMailMessageIdRewriteHook(db.messageIdToAws.bind(db)),
+  );
+  deliverer.postHooks.push(
+    new AwsMailMessageIdSaveHook((original, aws) =>
+      db.addMessageIdMap({ message_id: original, aws_message_id: aws }).then(),
+    ),
+  );
+  return deliverer;
+}
+
+function setupAwsHono(
+  hono: Hono,
+  options: {
+    path: string;
+    auth: string;
+    callback: (s3Key: string, recipients?: string[]) => Promise<void>;
+  },
+) {
+  hono.post(
+    `/${options.path}`,
+    async (ctx, next) => {
+      const auth = ctx.req.header("Authorization");
+      if (auth !== options.auth) {
+        return ctx.json({ msg: "Bad auth!" }, 403);
+      }
+      await next();
     },
-    "list-lives": async (_: unknown) => {
-      const liveMails = await this.#retriever.listLiveMails();
-      log.info(`Total ${liveMails.length}:`);
-      log.info(liveMails.join("\n"));
+    zValidator(
+      "json",
+      z.object({
+        key: z.string(),
+        recipients: z.optional(z.array(z.string())),
+      }),
+    ),
+    async (ctx) => {
+      const { key, recipients } = ctx.req.valid("json");
+      await options.callback(key, recipients);
+      return ctx.json({ msg: "Done!" });
     },
-    "recycle-lives": async (_: unknown) => {
-      await this.#retriever.recycleLiveMails();
+  );
+}
+
+function createCron(fetcher: AwsMailFetcher, consumer: AwsS3MailConsumer) {
+  return new CronTask({
+    name: "live-mail-recycler",
+    interval: 6 * 3600 * 1000,
+    callback: () => {
+      return fetcher.recycleLiveMails(consumer);
     },
-    "serve": async (_: unknown) => {
-      await this.serve().http.finished;
+    startNow: true,
+  });
+}
+
+function createBaseServices() {
+  const config = new ConfigProvider(PREFIX, CONFIG_DEFINITIONS);
+  Deno.mkdirSync(config.get("dataPath"), { recursive: true });
+  const logger = new Logger();
+  logger.externalLogDir = join(config.get("dataPath"), "log");
+  return { config, logger };
+}
+
+function createAwsFetchOnlyServices() {
+  const { config, logger } = createBaseServices();
+  const awsOptions = createAwsOptions({
+    user: config.get("awsUser"),
+    password: config.get("awsPassword"),
+    region: config.get("awsRegion"),
+  });
+  const fetcher = new AwsMailFetcher(
+    logger,
+    awsOptions,
+    config.get("awsMailBucket"),
+  );
+  return { config, logger, awsOptions, fetcher };
+}
+
+function createAwsRecycleOnlyServices() {
+  const { config, logger, awsOptions, fetcher } = createAwsFetchOnlyServices();
+
+  const inbound = createInbound(logger, {
+    fallback: config.getList("inboundFallback"),
+    ldaPath: config.get("ldaPath"),
+    aliasFile: join(config.get("dataPath"), "aliases.csv"),
+    mailDomain: config.get("mailDomain"),
+  });
+
+  const recycler = (rawMail: string, _: unknown): Promise<void> =>
+    inbound.deliver({ mail: new Mail(rawMail) }).then();
+
+  return { config, logger, awsOptions, fetcher, inbound, recycler };
+}
+function createAwsServices() {
+  const { config, logger, inbound, awsOptions, fetcher, recycler } =
+    createAwsRecycleOnlyServices();
+  const dbService = new DbService(join(config.get("dataPath"), "db.sqlite"));
+  const outbound = createOutbound(logger, awsOptions, dbService);
+
+  return {
+    config,
+    logger,
+    inbound,
+    dbService,
+    awsOptions,
+    fetcher,
+    recycler,
+    outbound,
+  };
+}
+
+function createServerServices() {
+  const services = createAwsServices();
+  const { logger, config, outbound, inbound, fetcher } = services;
+  const smtp = createSmtp(logger, outbound);
+
+  const hono = createHono(logger, outbound, inbound);
+  setupAwsHono(hono, {
+    path: config.get("awsInboundPath"),
+    auth: config.get("awsInboundKey"),
+    callback: (s3Key, recipients) => {
+      return fetcher.consumeS3Mail(s3Key, (rawMail, _) =>
+        inbound.deliver({ mail: new Mail(rawMail), recipients }).then(),
+      );
     },
-    "real-serve": async (_: unknown) => {
-      await this.realServe().http.finished;
+  });
+
+  return {
+    ...services,
+    smtp,
+    hono,
+  };
+}
+
+function serve(cron: boolean = false) {
+  const { config, fetcher, recycler, smtp, hono } = createServerServices();
+  smtp.serve({
+    hostname: config.get("smtpHost"),
+    port: config.getInt("smtpPort"),
+  });
+  Deno.serve(
+    {
+      hostname: config.get("httpHost"),
+      port: config.getInt("httpPort"),
     },
-  } as const;
+    hono.fetch,
+  );
+
+  if (cron) {
+    createCron(fetcher, recycler);
+  }
 }
 
-const nonServerCli = {
-  "sendmail": async (_: unknown) => {
-    const decoder = new TextDecoder();
-    let text = "";
-    for await (const chunk of Deno.stdin.readable) {
-      text += decoder.decode(chunk);
-    }
+async function listLives() {
+  const { logger, fetcher } = createAwsFetchOnlyServices();
+  const liveMails = await fetcher.listLiveMails();
+  logger.info(`Total ${liveMails.length}:`);
+  logger.info(liveMails.join("\n"));
+}
 
-    const res = await fetch(
-      `http://localhost:${config.HTTP_PORT}/send/raw`,
-      {
-        method: "post",
-        body: text,
-      },
-    );
-    log.infoOrError(!res.ok, res);
-    log.infoOrError(!res.ok, "Body\n" + await res.text());
-    if (!res.ok) Deno.exit(-1);
-  },
-} as const;
+async function recycleLives() {
+  const { fetcher, recycler } = createAwsRecycleOnlyServices();
+  await fetcher.recycleLiveMails(recycler);
+}
 
 if (import.meta.main) {
   const args = parseArgs(Deno.args);
@@ -116,21 +269,32 @@ if (import.meta.main) {
     throw new Error("You must specify a command.");
   }
 
-  const command = args._[0];
-
-  if (command in nonServerCli) {
-    log.info(`Run non-server command ${command}.`);
-    await nonServerCli[command as keyof typeof nonServerCli](args);
-    Deno.exit(0);
-  }
+  const command = String(args._[0]);
 
-  const app = new AwsRelayApp();
-  await app.setup();
-  if (command in app.cli) {
-    log.info(`Run command ${command}.`);
-    await app.cli[command as keyof AwsRelayApp["cli"]](args);
-    Deno.exit(0);
-  } else {
-    throw new Error(command + " is not a valid command.");
+  switch (command) {
+    case "sendmail": {
+      const { logger, config } = createBaseServices();
+      await sendMail(logger, config.getInt("httpPort"));
+      break;
+    }
+    case "list-lives": {
+      await listLives();
+      break;
+    }
+    case "recycle-lives": {
+      await recycleLives();
+      break;
+    }
+    case "serve": {
+      serve();
+      break;
+    }
+    case "real-serve": {
+      serve(true);
+      break;
+    }
+    default: {
+      throw new Error(command + " is not a valid command.");
+    }
   }
 }