automatically set email-in addresses based on slug [mozilla/parsys#35]

README.md

@@ -0,0 +1,10 @@
+# auto-email-in
+*Discourse plugin which automatically sets category email-in addresses based on their slug*
+
+## Installation
+
+Follow the Discourse [Install a Plugin](https://meta.discourse.org/t/install-a-plugin/19157) guide.
+
+## Licence
+
+[MPL 2.0](https://www.mozilla.org/MPL/2.0/)

config/locales/server.en.yml

@@ -0,0 +1,5 @@
+en:
+  site_settings:
+    auto_email_in_enabled: "Enable automatic creation of category email-in addresses based on their slug"
+    auto_email_in_divider: "Set the divider between a parent category slug and sub category slug"
+    auto_email_in_domain: "Set the domain of the email-in addresses"

config/settings.yml

@@ -0,0 +1,7 @@
+plugins:
+  auto_email_in_enabled:
+    default: false
+  auto_email_in_divider:
+    default: '+'
+  auto_email_in_domain:
+    default: 'example.com'

plugin.rb

@@ -0,0 +1,65 @@
+# name: auto-email-in
+# about: Discourse plugin which automatically sets category email-in addresses based on their slug
+# version: 0.0.1
+# authors: Leo McArdle
+
+enabled_site_setting :auto_email_in_enabled
+
+after_initialize do
+  require_dependency 'category'
+  class ::Category
+    after_save do
+      update_email_in
+      update_subcategory_email_in
+    end
+
+    def update_email_in(site_setting=false)
+      if site_setting and site_setting.name == 'auto_email_in_enabled'
+        return unless site_setting.value == 't'
+      else
+        return unless SiteSetting.auto_email_in_enabled
+      end
+
+      old_email_in = self.email_in
+      divider = SiteSetting.auto_email_in_divider
+      domain = SiteSetting.auto_email_in_domain
+
+      if site_setting
+        if site_setting.name == 'auto_email_in_divider'
+          divider = site_setting.value
+        elsif site_setting.name == 'auto_email_in_domain'
+          domain = site_setting.value
+        end
+      end
+
+      if self.parent_category
+        new_email_in = "#{self.parent_category.slug}#{divider}#{self.slug}@#{domain}"
+      else
+        new_email_in = "#{self.slug}@#{domain}"
+      end
+
+      update_column(:email_in, new_email_in) unless new_email_in == old_email_in
+    end
+
+    def update_subcategory_email_in
+      if self.subcategories
+        self.subcategories.each do |subcategory|
+          subcategory.update_email_in
+        end
+      end
+    end
+  end
+
+  Category.all.each do |category|
+    category.update_email_in
+  end
+end
+
+DiscourseEvent.on(:site_setting_saved) do |site_setting|
+  name = site_setting.name
+  if name == 'auto_email_in_enabled' or name == 'auto_email_in_divider' or name == 'auto_email_in_domain'
+    Category.all.each do |category|
+      category.update_email_in(site_setting)
+    end
+  end
+end