From 8f46d45603b071f5eb84073ac4407ed4d524cc1d Mon Sep 17 00:00:00 2001
From: f <f@sutty.nl>
Date: Tue, 16 Jun 2020 13:35:08 -0300
Subject: [PATCH] mensajes de mantenimiento con agenda

---
 Gemfile                                       |  1 +
 Gemfile.lock                                  |  4 ++
 app/jobs/maintenance_job.rb                   | 30 ++++++++++++
 app/mailers/contact_mailer.rb                 |  2 +
 app/mailers/maintenance_mailer.rb             | 46 +++++++++++++++++++
 app/models/maintenance.rb                     |  8 ++++
 app/views/maintenance/were_back.text.haml     |  6 +++
 app/views/maintenance_mailer/notice.html.haml |  6 +++
 app/views/maintenance_mailer/notice.text.haml | 12 +++++
 .../maintenance_mailer/were_back.html.haml    |  3 ++
 .../maintenance_mailer/were_back.text.haml    |  6 +++
 config/locales/en.yml                         | 15 ++++++
 config/locales/es.yml                         | 15 ++++++
 .../20200616133218_create_maintenance.rb      | 14 ++++++
 db/schema.rb                                  | 20 +++++++-
 15 files changed, 187 insertions(+), 1 deletion(-)
 create mode 100644 app/jobs/maintenance_job.rb
 create mode 100644 app/mailers/maintenance_mailer.rb
 create mode 100644 app/models/maintenance.rb
 create mode 100644 app/views/maintenance/were_back.text.haml
 create mode 100644 app/views/maintenance_mailer/notice.html.haml
 create mode 100644 app/views/maintenance_mailer/notice.text.haml
 create mode 100644 app/views/maintenance_mailer/were_back.html.haml
 create mode 100644 app/views/maintenance_mailer/were_back.text.haml
 create mode 100644 db/migrate/20200616133218_create_maintenance.rb

diff --git a/Gemfile b/Gemfile
index bc31c84c..4dfcf5d9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -50,6 +50,7 @@ gem 'friendly_id'
 gem 'hamlit-rails'
 gem 'hiredis'
 gem 'image_processing'
+gem 'icalendar'
 gem 'inline_svg'
 gem 'jekyll'
 gem 'jekyll-data', require: 'jekyll-data',
diff --git a/Gemfile.lock b/Gemfile.lock
index a0f6cf91..c724aebf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -194,6 +194,9 @@ GEM
     http_parser.rb (0.6.0)
     i18n (1.8.3)
       concurrent-ruby (~> 1.0)
+    icalendar (2.6.1)
+      ice_cube (~> 0.16)
+    ice_cube (0.16.3)
     image_processing (1.11.0)
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
@@ -507,6 +510,7 @@ DEPENDENCIES
   haml-lint
   hamlit-rails
   hiredis
+  icalendar
   image_processing
   inline_svg
   jbuilder (~> 2.5)
diff --git a/app/jobs/maintenance_job.rb b/app/jobs/maintenance_job.rb
new file mode 100644
index 00000000..2a335702
--- /dev/null
+++ b/app/jobs/maintenance_job.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+# Envía los mensajes de mantenimiento
+#
+# TODO: Interfaz web desde el panel de gestión.  Mientras tanto:
+#
+# docker exec -it sutty /bin/sh
+# su app
+# cd
+# bundle exec rails c
+# m = Maintenance.create message_en: 'reason', message_es: 'razón',
+#   estimated_from: Time.now, estimated_to: Time.now + 1.hour
+# MaintenanceJob.perform_async(maintenance_id: m.id)
+#
+# Lo mismo para salir de mantenimiento, agregando el atributo
+# are_we_back: true al crear el Maintenance.
+class MaintenanceJob < ApplicationJob
+  def perform(maintenance_id:)
+    maintenance = Maintenance.find(maintenance_id)
+    # Decidir cuál vamos a enviar según el estado de Maintenance
+    mailer = maintenance.are_we_back ? :were_back : :notice
+
+    # XXX: Parece que [0] es más rápido que []#first
+    Usuarie.all.pluck(:email, :lang).each do |u|
+      MaintenanceMailer.with(maintenance: maintenance,
+                             email: u[0],
+                             lang: u[1]).send(mailer).deliver_now
+    end
+  end
+end
diff --git a/app/mailers/contact_mailer.rb b/app/mailers/contact_mailer.rb
index 2b97c63d..a9701811 100644
--- a/app/mailers/contact_mailer.rb
+++ b/app/mailers/contact_mailer.rb
@@ -20,6 +20,8 @@ class ContactMailer < ApplicationMailer
 
   # El CSV es un archivo adjunto con dos filas, una con las etiquetas de
   # los campos en la cabecera y otra con los valores.
+  #
+  # TODO: Si el sitio tiene muches usuaries esto se genera cada vez.
   def generate_csv
     csv = ["\xEF\xBB\xBF"]
     csv << params[:form].keys.map do |field|
diff --git a/app/mailers/maintenance_mailer.rb b/app/mailers/maintenance_mailer.rb
new file mode 100644
index 00000000..2f2a3d6f
--- /dev/null
+++ b/app/mailers/maintenance_mailer.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+# Envía correos de mantenimiento
+class MaintenanceMailer < ApplicationMailer
+  # Notifica a les usuaries de tareas de mantenimiento
+  def notice
+    I18n.with_locale params[:lang] do
+      attachments['maintenance.ics'] = ics
+
+      mail to: params[:email],
+           subject: I18n.t('maintenance_mailer.notice.subject')
+    end
+  end
+
+  # Notifica que volvimos
+  def were_back
+    params[:maintenance] = Maintenance.find(params[:maintenance_id])
+
+    Usuarie.all.find_each do |usuarie|
+      I18n.with_locale usuarie.lang do
+        mail to: usuarie.email,
+             subject: I18n.t('maintenance_mailer.were_back.subject')
+      end
+    end
+  end
+
+  private
+
+  def cache_key
+    @cache_key ||= params[:maintenance].cache_key_with_version + '/ics/' + params[:lang]
+  end
+
+  def ics
+    Rails.cache.fetch(cache_key, expires_in: 1.hour) do
+      cal = Icalendar::Calendar.new
+      cal.event do |e|
+        e.dtstart = params[:maintenance].estimated_from
+        e.dtend = params[:maintenance].estimated_to
+        e.summary = I18n.t('maintenance_mailer.ics.summary')
+        e.description = params[:maintenance].message
+      end
+
+      { mimetype: 'text/calendar; charset=utf-8', content: cal.to_ical }
+    end
+  end
+end
diff --git a/app/models/maintenance.rb b/app/models/maintenance.rb
new file mode 100644
index 00000000..a40d5cc7
--- /dev/null
+++ b/app/models/maintenance.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# En mantenimiento
+class Maintenance < ApplicationRecord
+  extend Mobility
+
+  translates :message, type: :string, locale_accessors: true
+end
diff --git a/app/views/maintenance/were_back.text.haml b/app/views/maintenance/were_back.text.haml
new file mode 100644
index 00000000..156c364c
--- /dev/null
+++ b/app/views/maintenance/were_back.text.haml
@@ -0,0 +1,6 @@
+= t('.hi').html_safe
+\
+= t('.message').html_safe
+\
+= params[:maintenance].message.html_safe
+\
diff --git a/app/views/maintenance_mailer/notice.html.haml b/app/views/maintenance_mailer/notice.html.haml
new file mode 100644
index 00000000..667002b2
--- /dev/null
+++ b/app/views/maintenance_mailer/notice.html.haml
@@ -0,0 +1,6 @@
+%p= t('.hi')
+%p= t('.message')
+%p= t('.reason')
+%blockquote= params[:maintenance].message
+%p= t('.estimated_from', from: params[:maintenance].estimated_from)
+%p= t('.estimated_to', to: params[:maintenance].estimated_to)
diff --git a/app/views/maintenance_mailer/notice.text.haml b/app/views/maintenance_mailer/notice.text.haml
new file mode 100644
index 00000000..7e8c5f33
--- /dev/null
+++ b/app/views/maintenance_mailer/notice.text.haml
@@ -0,0 +1,12 @@
+= t('.hi').html_safe
+\
+= t('.message').html_safe
+\
+= t('.reason').html_safe
+\
+= params[:maintenance].message.html_safe
+\
+= t('.estimated_from', from: params[:maintenance].estimated_from).html_safe
+\
+= t('.estimated_to', to: params[:maintenance].estimated_to).html_safe
+\
diff --git a/app/views/maintenance_mailer/were_back.html.haml b/app/views/maintenance_mailer/were_back.html.haml
new file mode 100644
index 00000000..20d0bf20
--- /dev/null
+++ b/app/views/maintenance_mailer/were_back.html.haml
@@ -0,0 +1,3 @@
+%p= t('.hi')
+%p= t('.message')
+%blockquote= params[:maintenance].message
diff --git a/app/views/maintenance_mailer/were_back.text.haml b/app/views/maintenance_mailer/were_back.text.haml
new file mode 100644
index 00000000..5d7d5311
--- /dev/null
+++ b/app/views/maintenance_mailer/were_back.text.haml
@@ -0,0 +1,6 @@
+= t('.hi')
+\
+= t('.message')
+\
+= params[:maintenance].message
+\
diff --git a/config/locales/en.yml b/config/locales/en.yml
index aae7c861..8224fc98 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -69,6 +69,21 @@ en:
         success: Available for download
         error: Error
       help: You can contact us by replying this e-mail
+  maintenance_mailer:
+    notice:
+      subject: 'Maintenance notice'
+      hi: 'Hi!'
+      message: "We're getting in contact with you to let you know we'll be doing maintenance work in our servers."
+      reason: 'The reason is:'
+      estimated_from: 'The maintenance period starts at %{from}'
+      estimated_to: 'Up to %{to} (approximately)'
+      thanks: 'Thanks for your patience'
+    were_back:
+      subject: 'Maintenance period ended'
+      hi: 'Hi!'
+      message: 'The maintenance period ended at %{created_at}'
+    ics:
+      summary: 'Sutty - Maintenance'
   activerecord:
     models:
       usuarie: User
diff --git a/config/locales/es.yml b/config/locales/es.yml
index 0223ef04..7aa87cdb 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -71,6 +71,21 @@ es:
         success: Disponible para descargar
         error: Hubo un error
       help: Por cualquier duda, responde este correo para contactarte con nosotres.
+  maintenance_mailer:
+    notice:
+      subject: 'Aviso de mantenimiento'
+      hi: '¡Hola!'
+      message: 'Nos comunicamos con vos para informarte que estaremos realizando mantenimiento en nuestros servidores'
+      reason: 'La razón de esta tarea es:'
+      estimated_from: 'El mantenimiento se realizará a partir de %{from}'
+      estimated_to: 'Hasta %{to} (aproximadamente)'
+      thanks: 'Gracias por tu paciencia'
+    were_back:
+      subject: 'Fin del mantenimiento'
+      hi: '¡Hola!'
+      message: 'El período de mantenimiento terminó en %{created_at}'
+    ics:
+      summary: 'Sutty - Mantenimiento'
   activerecord:
     models:
       usuarie: Usuarie
diff --git a/db/migrate/20200616133218_create_maintenance.rb b/db/migrate/20200616133218_create_maintenance.rb
new file mode 100644
index 00000000..581d9e3d
--- /dev/null
+++ b/db/migrate/20200616133218_create_maintenance.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+# Crea una tabla de avisos de mantenimiento
+class CreateMaintenance < ActiveRecord::Migration[6.0]
+  def change
+    create_table :maintenances do |t|
+      t.timestamps
+      t.text :message
+      t.datetime :estimated_from
+      t.datetime :estimated_to
+      t.boolean :are_we_back, default: false
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 5d0d00a8..9cc2bb75 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -12,7 +12,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20_200_206_151_057) do
+ActiveRecord::Schema.define(version: 20_200_616_133_218) do
   # Could not dump table "access_logs" because of following StandardError
   #   Unknown type '' for column 'id'
 
@@ -92,6 +92,23 @@ ActiveRecord::Schema.define(version: 20_200_206_151_057) do
     t.string 'icons'
   end
 
+  create_table 'log_entries', force: :cascade do |t|
+    t.datetime 'created_at', precision: 6, null: false
+    t.datetime 'updated_at', precision: 6, null: false
+    t.integer 'site_id'
+    t.text 'text'
+    t.index ['site_id'], name: 'index_log_entries_on_site_id'
+  end
+
+  create_table 'maintenances', force: :cascade do |t|
+    t.datetime 'created_at', precision: 6, null: false
+    t.datetime 'updated_at', precision: 6, null: false
+    t.text 'message'
+    t.datetime 'estimated_from'
+    t.datetime 'estimated_to'
+    t.boolean 'are_we_back', default: false
+  end
+
   create_table 'mobility_string_translations', force: :cascade do |t|
     t.string 'locale', null: false
     t.string 'key', null: false
@@ -139,6 +156,7 @@ ActiveRecord::Schema.define(version: 20_200_206_151_057) do
     t.text 'description'
     t.string 'title'
     t.boolean 'colaboracion_anonima', default: false
+    t.boolean 'contact', default: false
     t.index ['design_id'], name: 'index_sites_on_design_id'
     t.index ['licencia_id'], name: 'index_sites_on_licencia_id'
     t.index ['name'], name: 'index_sites_on_name', unique: true