# On why we use Shrine over Active Storage:
# https://github.com/shrinerb/shrine/blob/d9aba64bd5515584645f8885c76d56fa1a842bac/doc/advantages.md

require 'shrine'

Shrine.plugin :activerecord
Shrine.plugin :backgrounding

Shrine.plugin(
  :derivatives,
  create_on_promote:      true, # automatically create derivatives on promotion 
  versions_compatibility: true  # handle versions column format 
)

if Rails.env.test?
  require "shrine/storage/file_system"

  Shrine.storages = {
    cache: Shrine::Storage::FileSystem.new("tmp/uploads", prefix: "cache"),
    store: Shrine::Storage::FileSystem.new("tmp/uploads", prefix: "store")
  }
else
  if ENV["S3_ACCESS_KEY_ID"].blank?
    msg = "You need to configure S3 credentials. See the README.md for more details. File uploads will be broken until you fix it."
    Rails.logger.error msg
    puts msg

  else
    Shrine.plugin :presign_endpoint
    s3_options = {
      access_key_id:     ENV.fetch("S3_ACCESS_KEY_ID"),
      secret_access_key: ENV.fetch("S3_SECRET_ACCESS_KEY"),
      region:            ENV.fetch("S3_REGION"),
      bucket:            ENV.fetch("S3_BUCKET"),
    }

    require "shrine/storage/s3"
    config = Cas::Config.new.uploads
    Shrine.storages = {
      cache: Shrine::Storage::S3.new(prefix: config[:cache_directory_prefix], **s3_options),
      store: Shrine::Storage::S3.new(prefix: config[:store_directory_prefix], **s3_options),
    }
  end
end

Shrine::Attacher.promote_block do
  Rails.logger.info "Shrine promoting #{record.class.name} file scheduled"
  ::Cas::Images::PromoteJob.perform_async(
    self.class.name,
    record.class.name,
    record.id,
    name.to_s,
    file_data
  )
end


Shrine::Attacher.destroy_block do
  Rails.logger.info "Shrine deleting file scheduled"
  ::Cas::Images::DeleteJob.perform_async(self.class.name, data)
end