From 8c7f926bd7c11d2b56dbe859890c229cef87b162 Mon Sep 17 00:00:00 2001
From: Anand Chowdhary <mail@anandchowdhary.com>
Date: Fri, 30 Oct 2020 14:29:53 +0530
Subject: [PATCH] :sparkles: Send membership welcome email

---
 src/modules/memberships/memberships.module.ts |  4 +++-
 .../memberships/memberships.service.ts        | 22 ++++++++++++++++---
 src/templates/groups/invitation.md            |  9 ++++++++
 3 files changed, 31 insertions(+), 4 deletions(-)
 create mode 100644 src/templates/groups/invitation.md

diff --git a/src/modules/memberships/memberships.module.ts b/src/modules/memberships/memberships.module.ts
index 3c7c21542..1f6601e45 100644
--- a/src/modules/memberships/memberships.module.ts
+++ b/src/modules/memberships/memberships.module.ts
@@ -1,11 +1,13 @@
 import { Module } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
+import { EmailModule } from '../email/email.module';
 import { PrismaModule } from '../prisma/prisma.module';
 import { GroupMembershipController } from './memberships-group.controller';
 import { UserMembershipController } from './memberships-user.controller';
 import { MembershipsService } from './memberships.service';
 
 @Module({
-  imports: [PrismaModule],
+  imports: [PrismaModule, EmailModule, ConfigModule],
   controllers: [UserMembershipController, GroupMembershipController],
   providers: [MembershipsService],
 })
diff --git a/src/modules/memberships/memberships.service.ts b/src/modules/memberships/memberships.service.ts
index 07a768b0c..fd760f69d 100644
--- a/src/modules/memberships/memberships.service.ts
+++ b/src/modules/memberships/memberships.service.ts
@@ -4,6 +4,7 @@ import {
   Injectable,
   UnauthorizedException,
 } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
 import {
   groupsCreateInput,
   memberships,
@@ -15,17 +16,19 @@ import {
 import { safeEmail } from 'src/helpers/safe-email';
 import { Expose } from 'src/modules/prisma/prisma.interface';
 import { AuthService } from '../auth/auth.service';
+import { EmailService } from '../email/email.service';
 import { PrismaService } from '../prisma/prisma.service';
-import { UsersService } from '../users/users.service';
 import { CreateMembershipInput } from './memberships.interface';
 
 @Injectable()
 export class MembershipsService {
   constructor(
     private prisma: PrismaService,
-    private users: UsersService,
     private auth: AuthService,
+    private email: EmailService,
+    private configService: ConfigService,
   ) {}
+
   async getMemberships(params: {
     skip?: number;
     take?: number;
@@ -147,13 +150,26 @@ export class MembershipsService {
       }),
     );
     if (!user) user = await this.auth.register(ipAddress, data);
-    return this.prisma.memberships.create({
+    const result = await this.prisma.memberships.create({
       data: {
         role: data.role,
         group: { connect: { id: groupId } },
         user: { connect: { id: user.id } },
       },
+      include: { group: { select: { name: true } } },
+    });
+    this.email.send({
+      to: `"${user.name}" <${emailSafe}>`,
+      template: 'groups/invitation',
+      data: {
+        name: user.name,
+        group: result.group.name,
+        link: `${this.configService.get<string>(
+          'frontendUrl',
+        )}/groups/${groupId}`,
+      },
     });
+    return this.prisma.expose<memberships>(result);
   }
 
   /** Verify whether a group membership can be deleted */
diff --git a/src/templates/groups/invitation.md b/src/templates/groups/invitation.md
new file mode 100644
index 000000000..cff5c06bf
--- /dev/null
+++ b/src/templates/groups/invitation.md
@@ -0,0 +1,9 @@
+# Welcome to {{ group }}
+
+Hi {{name}},
+
+You've joined the group **{{ group }}**. You can manage your membership by logging to your account.
+
+<a href="{{ link }}" class="btn btn-primary">Visit this group</a>
+
+If you didn't want to be added to {{ group }}, you can log in to your account and leave the group.