1 files changed, 78 insertions, 0 deletions
diff --git a/services/docker/mail-server/relay/app.ts b/services/docker/mail-server/relay/app.ts
new file mode 100644
index 0000000..3a85996
--- /dev/null
+++ b/services/docker/mail-server/relay/app.ts
@@ -0,0 +1,78 @@
+import { join } from "@std/path";
+import { Hono } from "hono";
+import { logger as honoLogger } from "hono/logger";
+
+import logger, { error } from "./logger.ts";
+import config from "./config.ts";
+import { DbService } from "./db.ts";
+import {
+  AliasFileMailHook,
+  FallbackReceiptsHook,
+  MailDeliverer,
+} from "./mail.ts";
+import { DovecotMailDeliverer } from "./dovecot.ts";
+import { CronTask, CronTaskConfig } from "./cron.ts";
+import { DumbSMTPServer as DumbSmtpServer } from "./dumb-smtp-server.ts";
+
+export abstract class AppBase {
+  protected readonly db: DbService;
+  protected readonly crons: CronTask[] = [];
+  protected readonly routes: Hono[] = [];
+  protected readonly inboundDeliverer: MailDeliverer;
+  protected readonly hono = new Hono();
+
+  protected abstract readonly outboundDeliverer: MailDeliverer;
+
+  constructor() {
+    const dataPath = config.getValue("dataPath");
+    Deno.mkdirSync(dataPath, { recursive: true });
+    logger.path = join(dataPath, "log");
+    logger.log(config);
+
+    this.db = new DbService(join(dataPath, "db.sqlite"));
+    this.inboundDeliverer = new DovecotMailDeliverer();
+    this.inboundDeliverer.preHooks.push(
+      new FallbackReceiptsHook(new Set(config.getValueList("inboundFallback"))),
+      new AliasFileMailHook(join(dataPath, "aliases.csv")),
+    );
+
+    this.hono.onError((err, c) => {
+      error(err);
+      return c.json({ msg: "Server error." }, 500);
+    });
+
+    this.hono.use(honoLogger());
+    this.hono.post("/send/raw", async (context) => {
+      const body = await context.req.text();
+      if (body.trim().length === 0) {
+        return context.json({ msg: "Can't send an empty mail" }, 400);
+      } else {
+        const mail = await this.outboundDeliverer.deliverRaw(body);
+        return context.json({
+          messageId: mail.messageId,
+          awsMessageId: mail.awsMessageId,
+        });
+      }
+    });
+    this.hono.post("/receive/raw", async (context) => {
+      await this.inboundDeliverer.deliverRaw(await context.req.text());
+      return context.json({});
+    });
+  }
+
+  createCron(config: CronTaskConfig): CronTask {
+    const cron = new CronTask(config);
+    this.crons.push(cron);
+    return cron;
+  }
+
+  serve(): { smtp: DumbSmtpServer; http: Deno.HttpServer } {
+    const smtp = new DumbSmtpServer(this.outboundDeliverer);
+    smtp.serve();
+    const http = Deno.serve({
+      hostname: config.HTTP_HOST,
+      port: config.HTTP_PORT,
+    }, this.hono.fetch);
+    return { smtp, http };
+  }
+}