feat: add email domains (#1895)

Implemented Email Domains which allows Platform/Enterprise customers to
send emails to recipients using their custom emails.

packages/trpc/server/enterprise-router/get-organisation-email-domain.ts

@@ -0,0 +1,63 @@
+import { ORGANISATION_MEMBER_ROLE_PERMISSIONS_MAP } from '@documenso/lib/constants/organisations';
+import { AppError, AppErrorCode } from '@documenso/lib/errors/app-error';
+import { buildOrganisationWhereQuery } from '@documenso/lib/utils/organisations';
+import { prisma } from '@documenso/prisma';
+
+import { authenticatedProcedure } from '../trpc';
+import {
+  ZGetOrganisationEmailDomainRequestSchema,
+  ZGetOrganisationEmailDomainResponseSchema,
+} from './get-organisation-email-domain.types';
+
+export const getOrganisationEmailDomainRoute = authenticatedProcedure
+  .input(ZGetOrganisationEmailDomainRequestSchema)
+  .output(ZGetOrganisationEmailDomainResponseSchema)
+  .query(async ({ input, ctx }) => {
+    const { emailDomainId } = input;
+
+    ctx.logger.info({
+      input: {
+        emailDomainId,
+      },
+    });
+
+    return await getOrganisationEmailDomain({
+      userId: ctx.user.id,
+      emailDomainId,
+    });
+  });
+
+type GetOrganisationEmailDomainOptions = {
+  userId: number;
+  emailDomainId: string;
+};
+
+export const getOrganisationEmailDomain = async ({
+  userId,
+  emailDomainId,
+}: GetOrganisationEmailDomainOptions) => {
+  const emailDomain = await prisma.emailDomain.findFirst({
+    where: {
+      id: emailDomainId,
+      organisation: buildOrganisationWhereQuery({
+        organisationId: undefined,
+        userId,
+        roles: ORGANISATION_MEMBER_ROLE_PERMISSIONS_MAP['MANAGE_ORGANISATION'],
+      }),
+    },
+    omit: {
+      privateKey: true,
+    },
+    include: {
+      emails: true,
+    },
+  });
+
+  if (!emailDomain) {
+    throw new AppError(AppErrorCode.NOT_FOUND, {
+      message: 'Email domain not found',
+    });
+  }
+
+  return emailDomain;
+};