#
# Cookbook:: kosmos-ejabberd
# Recipe:: default
#
# The MIT License (MIT)
#
# Copyright:: 2019, Kosmos Developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

ejabberd_credentials = data_bag_item("credentials", "ejabberd")

ejabberd_version = node["kosmos-ejabberd"]["version"]
package_checksum = node["kosmos-ejabberd"]["checksum"]
package_path = "#{Chef::Config['file_cache_path']}/ejabberd_#{ejabberd_version}-0_amd64.deb"

remote_file package_path do
  source "https://www.process-one.net/downloads/downloads-action.php?file=/#{ejabberd_version}/ejabberd_#{ejabberd_version}-0_amd64.deb"
  checksum package_checksum
  notifies :install, "dpkg_package[ejabberd]", :immediately
end

dpkg_package "ejabberd" do
  source package_path
  version "#{ejabberd_version}-0"
  action :nothing
  notifies :create, "file[/lib/systemd/system/ejabberd.service]", :immediately
end

file "/opt/ejabberd/.erlang.cookie" do
  mode "0400"
  owner "ejabberd"
  group "ejabberd"
  content ejabberd_credentials['erlang_cookie']
end

file "/opt/ejabberd/.hosts.erlang" do
  mode "0644"
  owner "ejabberd"
  group "ejabberd"
  content <<-EOF
"andromeda.kosmos.org".
"centaurus.kosmos.org".
"draco.kosmos.org".
  EOF
end

ruby_block "configure ERLANG_NODE" do
  block do
    file = Chef::Util::FileEdit.new("/opt/ejabberd/conf/ejabberdctl.cfg")
    file.search_file_replace_line(
      %r{#ERLANG_NODE=ejabberd@localhost},
      "ERLAND_NODE=#{node['kosmos-ejabberd']['erlang_node']}"
    )
    file.write_file
  end
end

postgresql_data_bag_item = data_bag_item('credentials', 'postgresql')

hosts = [
  {
    name: "kosmos.org",
    sql_database: "ejabberd",
    ldap_enabled: true,
    ldap_password: ejabberd_credentials['kosmos_ldap_password'],
    append_host_config: <<-EOF
modules:
      mod_muc:
        host: "kosmos.chat"
        access:
          - allow
        access_admin:
          - allow: admin
        access_create: muc_create
        access_persistent: muc_create
        max_user_conferences: 1000
        default_room_options:
          mam: true
      mod_http_upload:
        put_url: "https://uploads.kosmos.chat/8af2c77"
        external_secret: "#{ejabberd_credentials["uploads_secret"]}"
        max_size: 104857600
        thumbnail: false # otherwise needs the identify command from ImageMagick installed
                EOF
  },
  {
    name: "5apps.com",
    sql_database: "ejabberd_5apps",
    ldap_enabled: true,
    ldap_password: ejabberd_credentials['5apps_ldap_password'],
    append_host_config: <<-EOF
modules:
      mod_muc:
        host: "muc.@HOST@"
        access:
          - allow: local
        access_admin:
          - allow: admin
        access_create: muc_create
        access_persistent: muc_create
        max_user_conferences: 1000
        default_room_options:
          anonymous: false
          public: true
          members_only: true
          public_list: false
          persistent: true
          mam: true
      mod_http_upload:
        put_url: "https://uploads.kosmos.chat/2802cfe"
        external_secret: "#{ejabberd_credentials["uploads_secret"]}"
        max_size: 104857600
        thumbnail: false # otherwise needs the identify command from ImageMagick installed
                EOF
  }
]

ldap_domain = node['kosmos-dirsrv']['master_hostname']
ldap_encryption_type = node.chef_environment == "development" ? "none" : "tls"
ldap_base = "cn=users,dc=kosmos,dc=org"

admin_users = ejabberd_credentials['admins']

postgresql_primary_node = postgresql_primary
postgresql_server = postgresql_primary_node[:ipaddress]
# PostgreSQL is on the same server, connect through localhost
postgresql_server = "localhost" if postgresql_primary_node[:hostname] == node[:hostname]

hosts.each do |host|
  ldap_rootdn = "uid=xmpp,ou=#{host[:name]},cn=applications,dc=kosmos,dc=org"

  template "/opt/ejabberd/conf/#{host[:name]}.yml" do
    source    "vhost.yml.erb"
    mode      0640
    owner     'ejabberd'
    group     'ejabberd'
    sensitive true
    variables pgsql_password: postgresql_data_bag_item['ejabberd_user_password'],
              sql_server: postgresql_server,
              host: host,
              ldap_base: ldap_base,
              ldap_server: ldap_domain,
              ldap_rootdn: ldap_rootdn,
              ldap_encryption_type: ldap_encryption_type
    notifies :run, "execute[ejabberdctl reload_config]", :delayed
  end
end

akkounts_ip_addresses = []
search(:node, "role:akkounts").each do |node|
  akkounts_ip_addresses << node["knife_zero"]["host"]
end

template "/opt/ejabberd/conf/ejabberd.yml" do
  source    "ejabberd.yml.erb"
  mode      0640
  sensitive true
  variables hosts: hosts,
            admin_users: admin_users,
            stun_auth_realm: "kosmos.org",
            turn_ip_address: node['ipaddress'],
            turn_min_port: node["kosmos-ejabberd"]["turn_min_port"],
            turn_max_port: node["kosmos-ejabberd"]["turn_max_port"],
            akkounts_ip_addresses: akkounts_ip_addresses
  notifies :run, "execute[ejabberdctl reload_config]", :delayed
end

execute "ejabberdctl reload_config" do
  command "/opt/ejabberd-#{ejabberd_version}/bin/ejabberdctl reload_config"
  action :nothing
end

file "/etc/init.d/ejabberd" do
  action :delete
end

# Copy the systemd service file
file "/lib/systemd/system/ejabberd.service" do
  content lazy { IO.read("/opt/ejabberd-#{ejabberd_version}/bin/ejabberd.service") }
  action :nothing
  notifies :run, "execute[systemctl daemon-reload]", :immediately
  notifies :restart, "service[ejabberd]", :delayed
end

execute "systemctl daemon-reload" do
  command "systemctl daemon-reload"
  action :nothing
end

# Set permissions for the upload folders
%w(xmpp.kosmos.org xmpp.5apps.com).each do |domain|
  directory "/opt/ejabberd/uploads/#{domain}" do
    owner "ejabberd"
    group "ejabberd"
    mode 0750
    recursive true
  end
end

service "ejabberd" do
  action [:enable, :start]
end

unless node.chef_environment == "development"
  include_recipe "kosmos-ejabberd::firewall"
end

#
# Tor hidden service
#
# The attributes for the hidden service are set in attributes/default.rb, due
# to the way the tor-full cookbook builds the path to the hidden service dir
include_recipe "tor-full"