From 96c4a6c8afd8531023b07cb209c3ebef5ef947d9 Mon Sep 17 00:00:00 2001
From: Nataliya Terskaya <nt@Nataliyas-MacBook-Pro.local>
Date: Mon, 23 May 2022 16:03:14 +0200
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---
 .../no_cached_s3/config_example.rb.example    | 61 +++++++++++++++++++
 lib/paperclip/storage/no_cache_s3.rb          |  2 +-
 2 files changed, 62 insertions(+), 1 deletion(-)
 create mode 100644 config_examples/no_cached_s3/config_example.rb.example

diff --git a/config_examples/no_cached_s3/config_example.rb.example b/config_examples/no_cached_s3/config_example.rb.example
new file mode 100644
index 0000000..85947f5
--- /dev/null
+++ b/config_examples/no_cached_s3/config_example.rb.example
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+STATIC_CDN = Rails.env.development? ? 'http://localhost:3000' : 'https://static-ru.insales.ru'
+
+# Fog::Storage требует разные префиксы для разных S3 стораджев.
+# Этот хэлпер использует поле с префиксом, если есть, или добавляет его.
+prefix_credentials = lambda do |prefix, input|
+  result = input.symbolize_keys
+  %i[access_key_id secret_access_key].each do |field|
+    key = :"#{prefix}_#{field}"
+    result[key] ||= result.delete(field) if result[field]
+  end
+  result
+end
+
+fog_directory = lambda do |bucket:, **options|
+  Fog::Storage.new(options).directories.new(key: bucket, public: true)
+end
+
+PAPERCLIP_NO_CACHE_S3_CONFIG_BASE =
+  case Rails.env
+  when 'production', 'test'
+    {
+      storage: :no_cache_s3,
+      # Не скачиваем файлы по http в тестах, чтобы не делать стабы vcr для всего подряд.
+      # В продакшене файлы скачиваются по url, чтобы качать через cdn и не тратить облачный трафик.
+      to_file_using_fog: Rails.env.test?,
+      url: "#{STATIC_CDN}/:key", # Умный cdn сам решает куда идти за файлом.
+      stores: {
+        yandex: fog_directory[
+          provider: 'AWS',
+          region: 'ru-central1',
+          endpoint: 'https://storage.yandexcloud.net',
+          **prefix_credentials[:aws, Rails.application.secrets.yandex_cloud],
+          bucket: 'digital-static'
+        ],
+        sbercloud: fog_directory[
+          provider: 'AWS',
+          region: 'ru-moscow',
+          endpoint: 'https://obs.ru-moscow-1.hc.sbercloud.ru',
+          **prefix_credentials[:aws, Rails.application.secrets.sbercloud],
+          bucket: 'digital-static'
+        ]
+      }
+    }.freeze
+  else
+    {
+      storage: :no_cache_s3,
+      url: '/:key',
+      stores: {
+        s3: fog_directory[
+          provider: 'Local',
+          local_root: Rails.root.join('public').to_s,
+          bucket: ''
+        ]
+      }
+    }.freeze
+  end
+
+# Добавляет общий префикс ко всем ключам.
+PAPERCLIP_NO_CACHE_S3_CONFIG = ->(key) { PAPERCLIP_NO_CACHE_S3_CONFIG_BASE.merge(key: "digital/#{key}") }
diff --git a/lib/paperclip/storage/no_cache_s3.rb b/lib/paperclip/storage/no_cache_s3.rb
index 63436dc..8cd4ffb 100644
--- a/lib/paperclip/storage/no_cache_s3.rb
+++ b/lib/paperclip/storage/no_cache_s3.rb
@@ -74,7 +74,7 @@ module Paperclip
       end
 
       # If store_id is given, it forces download from specific store using fog interface.
-      # Otherway it tries to download from cache store and finally uses url to download file
+      # Otherway uses url to download file
       # via HTTP. This is the most compatible way to delayeds3.
       def to_file(style = default_style, store_id = nil)
         style_key = key(style)