about summary refs log tree commit diff
path: root/app/models/web/push_subscription.rb
blob: e76f61278ef0b0e57c1012c50e3a13a54fe4b6ea (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
# frozen_string_literal: true
# == Schema Information
#
# Table name: web_push_subscriptions
#
#  id         :integer          not null, primary key
#  endpoint   :string           not null
#  key_p256dh :string           not null
#  key_auth   :string           not null
#  data       :json
#  created_at :datetime         not null
#  updated_at :datetime         not null
#

require 'webpush'
require_relative '../../models/setting'

class Web::PushSubscription < ApplicationRecord
  include RoutingHelper
  include StreamEntriesHelper
  include ActionView::Helpers::TranslationHelper
  include ActionView::Helpers::SanitizeHelper

  has_one :session_activation

  before_create :send_welcome_notification

  def push(notification)
    name = display_name notification.from_account
    title = title_str(name, notification)
    body = body_str notification
    dir = dir_str body
    url = url_str notification
    image = image_str notification
    actions = actions_arr notification

    access_token = actions.empty? ? nil : find_or_create_access_token(notification).token
    nsfw = notification.target_status.nil? || notification.target_status.spoiler_text.empty? ? nil : notification.target_status.spoiler_text

    # TODO: Make sure that the payload does not exceed 4KB - Webpush::PayloadTooLarge
    Webpush.payload_send(
      message: JSON.generate(
        title: title,
        dir: dir,
        image: image,
        badge: full_asset_url('badge.png', skip_pipeline: true),
        tag: notification.id,
        timestamp: notification.created_at,
        icon: notification.from_account.avatar_static_url,
        data: {
          content: decoder.decode(strip_tags(body)),
          nsfw: nsfw.nil? ? nil : decoder.decode(strip_tags(nsfw)),
          url: url,
          actions: actions,
          access_token: access_token,
          message: translate('push_notifications.group.title'), # Do not pass count, will be formatted in the ServiceWorker
        }
      ),
      endpoint: endpoint,
      p256dh: key_p256dh,
      auth: key_auth,
      vapid: {
        subject: "mailto:#{Setting.site_contact_email}",
        private_key: Rails.configuration.x.vapid_private_key,
        public_key: Rails.configuration.x.vapid_public_key,
      },
      ttl: 40 * 60 * 60 # 48 hours
    )
  end

  def pushable?(notification)
    data && data.key?('alerts') && data['alerts'][notification.type.to_s]
  end

  def as_payload
    payload = {
      id: id,
      endpoint: endpoint,
    }

    payload[:alerts] = data['alerts'] if data && data.key?('alerts')

    payload
  end

  private

  def title_str(name, notification)
    case notification.type
    when :mention then translate('push_notifications.mention.title', name: name)
    when :follow then translate('push_notifications.follow.title', name: name)
    when :favourite then translate('push_notifications.favourite.title', name: name)
    when :reblog then translate('push_notifications.reblog.title', name: name)
    end
  end

  def body_str(notification)
    case notification.type
    when :mention then notification.target_status.text
    when :follow then notification.from_account.note
    when :favourite then notification.target_status.text
    when :reblog then notification.target_status.text
    end
  end

  def url_str(notification)
    case notification.type
    when :mention then web_url("statuses/#{notification.target_status.id}")
    when :follow then web_url("accounts/#{notification.from_account.id}")
    when :favourite then web_url("statuses/#{notification.target_status.id}")
    when :reblog then web_url("statuses/#{notification.target_status.id}")
    end
  end

  def actions_arr(notification)
    actions =
      case notification.type
      when :mention then [
        {
          title: translate('push_notifications.mention.action_favourite'),
          icon: full_asset_url('web-push-icon_favourite.png', skip_pipeline: true),
          todo: 'request',
          method: 'POST',
          action: "/api/v1/statuses/#{notification.target_status.id}/favourite",
        },
      ]
      else []
      end

    should_hide = notification.type.equal?(:mention) && !notification.target_status.nil? && (notification.target_status.sensitive || !notification.target_status.spoiler_text.empty?)
    can_boost = notification.type.equal?(:mention) && !notification.target_status.nil? && !notification.target_status.hidden?

    if should_hide
      actions.insert(0, title: translate('push_notifications.mention.action_expand'), icon: full_asset_url('web-push-icon_expand.png', skip_pipeline: true), todo: 'expand', action: 'expand')
    end

    if can_boost
      actions << { title: translate('push_notifications.mention.action_boost'), icon: full_asset_url('web-push-icon_reblog.png', skip_pipeline: true), todo: 'request', method: 'POST', action: "/api/v1/statuses/#{notification.target_status.id}/reblog" }
    end

    actions
  end

  def image_str(notification)
    return nil if notification.target_status.nil? || notification.target_status.media_attachments.empty?

    full_asset_url(notification.target_status.media_attachments.first.file.url(:small))
  end

  def dir_str(body)
    rtl?(body) ? 'rtl' : 'ltr'
  end

  def send_welcome_notification
    Webpush.payload_send(
      message: JSON.generate(
        title: translate('push_notifications.subscribed.title'),
        icon: full_asset_url('android-chrome-192x192.png', skip_pipeline: true),
        badge: full_asset_url('badge.png', skip_pipeline: true),
        data: {
          content: translate('push_notifications.subscribed.body'),
          actions: [],
          url: web_url('notifications'),
          message: translate('push_notifications.group.title'), # Do not pass count, will be formatted in the ServiceWorker
        }
      ),
      endpoint: endpoint,
      p256dh: key_p256dh,
      auth: key_auth,
      vapid: {
        subject: "mailto:#{Setting.site_contact_email}",
        private_key: Rails.configuration.x.vapid_private_key,
        public_key: Rails.configuration.x.vapid_public_key,
      },
      ttl: 5 * 60 # 5 minutes
    )
  end

  def find_or_create_access_token(notification)
    Doorkeeper::AccessToken.find_or_create_for(
      Doorkeeper::Application.find_by(superapp: true),
      notification.account.user.id,
      Doorkeeper::OAuth::Scopes.from_string('read write follow'),
      Doorkeeper.configuration.access_token_expires_in,
      Doorkeeper.configuration.refresh_token_enabled?
    )
  end

  def decoder
    @decoder ||= HTMLEntities.new
  end
end