From d6627f5cce323a59fe9f8c36909b2f4ea2301dd3 Mon Sep 17 00:00:00 2001
From: Alexandre Iooss <erdnaxe@crans.org>
Date: Sun, 10 Mar 2019 11:10:59 +0100
Subject: [PATCH] Add matrix-appservice-discord

---
 matrix.yml                                    |  6 ++
 .../handlers/main.yml                         |  4 +
 .../tasks/0_apt_dependencies.yml              | 20 +++++
 .../tasks/1_user_group.yml                    | 26 ++++++
 .../matrix-appservice-discord/tasks/main.yml  | 57 +++++++++++++
 .../templates/apt/nodejs.j2                   |  5 ++
 .../templates/config.yaml.j2                  | 85 +++++++++++++++++++
 .../matrix-appservice-discord.service.j2      | 18 ++++
 8 files changed, 221 insertions(+)
 create mode 100644 roles/matrix-appservice-discord/handlers/main.yml
 create mode 100644 roles/matrix-appservice-discord/tasks/0_apt_dependencies.yml
 create mode 100644 roles/matrix-appservice-discord/tasks/1_user_group.yml
 create mode 100644 roles/matrix-appservice-discord/tasks/main.yml
 create mode 100644 roles/matrix-appservice-discord/templates/apt/nodejs.j2
 create mode 100644 roles/matrix-appservice-discord/templates/config.yaml.j2
 create mode 100644 roles/matrix-appservice-discord/templates/systemd/matrix-appservice-discord.service.j2

diff --git a/matrix.yml b/matrix.yml
index 1975e50..4767ca5 100644
--- a/matrix.yml
+++ b/matrix.yml
@@ -13,3 +13,9 @@
 - hosts: riot.adm.auro.re
   roles:
     - matrix-riot
+
+# Install Matrix services
+- hosts: matrix-services.adm.auro.re
+  roles:
+    - debian-backports
+    - matrix-appservice-discord
diff --git a/roles/matrix-appservice-discord/handlers/main.yml b/roles/matrix-appservice-discord/handlers/main.yml
new file mode 100644
index 0000000..ac3842d
--- /dev/null
+++ b/roles/matrix-appservice-discord/handlers/main.yml
@@ -0,0 +1,4 @@
+---
+# Reload systemd daemons when a service file changes
+- name: Reload systemd daemons
+  command: systemctl daemon-reload
diff --git a/roles/matrix-appservice-discord/tasks/0_apt_dependencies.yml b/roles/matrix-appservice-discord/tasks/0_apt_dependencies.yml
new file mode 100644
index 0000000..40fbbce
--- /dev/null
+++ b/roles/matrix-appservice-discord/tasks/0_apt_dependencies.yml
@@ -0,0 +1,20 @@
+---
+- name: Configure NodeJS pin
+  when:
+    - ansible_distribution == 'Debian'
+    - ansible_distribution_release == 'stretch'
+  template:
+    src: apt/nodejs.j2
+    dest: /etc/apt/preferences.d/nodejs
+    mode: 0644
+
+- name: Install required packages
+  apt:
+    name: "{{ item }}"
+    state: present
+    update_cache: true
+  with_items:
+    - git
+    - nodejs
+    - npm
+    - build-essential
diff --git a/roles/matrix-appservice-discord/tasks/1_user_group.yml b/roles/matrix-appservice-discord/tasks/1_user_group.yml
new file mode 100644
index 0000000..2fe23be
--- /dev/null
+++ b/roles/matrix-appservice-discord/tasks/1_user_group.yml
@@ -0,0 +1,26 @@
+---
+# Security #1
+- name: Create matrix-appservice-discord system group
+  group:
+    name: matrix-appservice-discord
+    system: yes
+    state: present
+
+# Security #2
+- name: Create matrix-appservice-discord user
+  user:
+    name: matrix-appservice-discord
+    group: matrix-appservice-discord
+    home: /var/local/matrix-appservice-discord
+    comment: Matrix Appservice Discord
+    system: yes
+    state: present
+
+# Security #3
+- name: Secure matrix-appservice-discord home directory
+  file:
+    path: /var/local/matrix-appservice-discord
+    state: directory
+    owner: matrix-appservice-discord
+    group: matrix-appservice-discord
+    mode: 0750
diff --git a/roles/matrix-appservice-discord/tasks/main.yml b/roles/matrix-appservice-discord/tasks/main.yml
new file mode 100644
index 0000000..a625a00
--- /dev/null
+++ b/roles/matrix-appservice-discord/tasks/main.yml
@@ -0,0 +1,57 @@
+---
+# Install APT dependencies
+- include_tasks: 0_apt_dependencies.yml
+
+# Create CodiMD user and group
+- include_tasks: 1_user_group.yml
+
+# Download CodiMD
+- name: Clone matrix-appservice-discord project
+  git:
+    repo: https://github.com/Half-Shot/matrix-appservice-discord.git
+    dest: /var/local/matrix-appservice-discord/matrix-appservice-discord
+    version: v0.4.0
+  become: true
+  become_user: matrix-appservice-discord
+
+# Setup dependencies
+- name: Install matrix-appservice-discord depedencies
+  command: npm ci
+  args:
+    chdir: /var/local/matrix-appservice-discord/matrix-appservice-discord
+  become: true
+  become_user: matrix-appservice-discord
+
+# Typescript into javascript
+- name: Compile matrix-appservice-discord
+  command: npm run build
+  args:
+    chdir: /var/local/matrix-appservice-discord/matrix-appservice-discord
+  become: true
+  become_user: matrix-appservice-discord
+
+# Configure
+- name: Configure matrix-appservice-discord
+  template:
+    src: config.yaml.j2
+    dest: /var/local/matrix-appservice-discord/matrix-appservice-discord/config.yaml
+    owner: matrix-appservice-discord
+    group: matrix-appservice-discord
+    mode: 0600
+
+# Service file
+- name: Install matrix-appservice-discord systemd unit
+  template:
+    src: 'systemd/matrix-appservice-discord.service.j2'
+    dest: '/etc/systemd/system/matrix-appservice-discord.service'
+    owner: root
+    group: root
+    mode: 0644
+  notify: Reload systemd daemons
+
+# Run
+#- name: Ensure that matrix-appservice-discord is started
+#  service:
+#    name: matrix-appservice-discord
+#    state: started
+#    enabled: true
diff --git a/roles/matrix-appservice-discord/templates/apt/nodejs.j2 b/roles/matrix-appservice-discord/templates/apt/nodejs.j2
new file mode 100644
index 0000000..65e5110
--- /dev/null
+++ b/roles/matrix-appservice-discord/templates/apt/nodejs.j2
@@ -0,0 +1,5 @@
+# {{ ansible_managed }}
+
+Package: node* libuv1*
+Pin: release a=stretch-backports
+Pin-Priority: 600
diff --git a/roles/matrix-appservice-discord/templates/config.yaml.j2 b/roles/matrix-appservice-discord/templates/config.yaml.j2
new file mode 100644
index 0000000..64e17dd
--- /dev/null
+++ b/roles/matrix-appservice-discord/templates/config.yaml.j2
@@ -0,0 +1,85 @@
+# {{ ansible_managed }}
+
+bridge:
+  # Domain part of the bridge, e.g. matrix.org
+  domain: "auro.re"
+  # This should be your publically facing URL because Discord may use it to
+  # fetch media from the media store.
+  homeserverUrl: "https://auro.re"
+  # Interval at which to process users in the 'presence queue'. If you have
+  # 5 users, one user will be processed every 500 milliseconds according to the
+  # value below. This has a minimum value of 250.
+  # WARNING: This has a high chance of spamming the homeserver with presence
+  # updates since it will send one each time somebody changes state or is online.
+  presenceInterval: 500
+  # Disable setting presence for 'ghost users' which means Discord users on Matrix
+  # will not be shown as away or online.
+  disablePresence: false
+  # Disable sending typing notifications when somebody on Discord types.
+  disableTypingNotifications: false
+  # Disable deleting messages on Discord if a message is redacted on Matrix.
+  disableDeletionForwarding: false
+  # Enable users to bridge rooms using !discord commands. See
+  # https://t2bot.io/discord for instructions.
+  enableSelfServiceBridging: false
+  # Disable sending of read receipts for Matrix events which have been
+  # successfully bridged to Discord.
+  disableReadReceipts: false
+# Authentication configuration for the discord bot.
+auth:
+  clientID: "12345"
+  botToken: "foobar"
+logging:
+  # What level should the logger output to the console at.
+  console: "warn" #silly, verbose, info, http, warn, error, silent
+  lineDateFormat: "MMM-D HH:mm:ss.SSS" # This is in moment.js format
+  files:
+    - file: "warn.log" # Will capture warnings
+      level: "warn"
+    - file: "botlogs.log" # Will capture logs from DiscordBot
+      level: "info"
+      enable:
+        - "DiscordBot"
+database:
+  userStorePath: "user-store.db"
+  roomStorePath: "room-store.db"
+  # You may either use SQLite or Postgresql for the bridge database, which contains
+  # important mappings for events and user puppeting configurations.
+  # Use the filename option for SQLite, or connString for Postgresql.
+  # If you are migrating, see https://github.com/Half-Shot/matrix-appservice-discord/blob/master/docs/howto.md#migrate-to-postgres-from-sqlite
+  # WARNING: You will almost certainly be fine with sqlite unless your bridge
+  # is in heavy demand and you suffer from IO slowness.
+  filename: "discord.db"
+  # connString: "postgresql://user:password@localhost/database_name"
+room:
+  # Set the default visibility of alias rooms, defaults to "public".
+  # One of: "public", "private"
+  defaultVisibility: "public"
+channel:
+    # Pattern of the name given to bridged rooms.
+    # Can use :guild for the guild name and :name for the channel name.
+    namePattern: "[Discord] :guild :name"
+    # Changes made to rooms when a channel is deleted.
+    deleteOptions:
+       # Prefix the room name with a string.
+       #namePrefix: "[Deleted]"
+       # Prefix the room topic with a string.
+       #topicPrefix: "This room has been deleted"
+       # Disable people from talking in the room by raising the event PL to 50
+       disableMessaging: false
+       # Remove the discord alias from the room.
+       unsetRoomAlias: true
+       # Remove the room from the directory.
+       unlistFromDirectory: true
+       # Set the room to be unavaliable for joining without an invite.
+       setInviteOnly: true
+       # Make all the discord users leave the room.
+       ghostsLeave: true
+limits:
+    # Delay in milliseconds between discord users joining a room.
+    roomGhostJoinDelay: 6000
+    # Delay in milliseconds before sending messages to discord to avoid echos.
+    # (Copies of a sent message may arrive from discord before we've
+    # fininished handling it, causing us to echo it back to the room)
+    discordSendDelay: 750
+
diff --git a/roles/matrix-appservice-discord/templates/systemd/matrix-appservice-discord.service.j2 b/roles/matrix-appservice-discord/templates/systemd/matrix-appservice-discord.service.j2
new file mode 100644
index 0000000..afc1b4b
--- /dev/null
+++ b/roles/matrix-appservice-discord/templates/systemd/matrix-appservice-discord.service.j2
@@ -0,0 +1,18 @@
+# {{ ansible_managed }}
+
+[Unit]
+Description=A bridge between Matrix and Discord
+After=syslog.target network-online.target mysql.service postgresql.service
+Conflicts=shutdown.target
+
+[Service]
+Type=simple
+User=matrix-appservice-discord
+Group=matrix-appservice-discord
+WorkingDirectory=/var/local/matrix-appservice-discord/matrix-appservice-discord
+Environment="NODE_ENV=production"
+ExecStart=/usr/bin/nodejs /var/local/matrix-appservice-discord/matrix-appservice-discord/app.js
+Restart=always
+
+[Install]
+WantedBy=multi-user.target