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require "fileutils"
require "pathname"
class ActiveFile::Sites::DiskSite < ActiveFile::Site
class_attribute :verifier, default: -> { Rails.application.message_verifier('ActiveFile::DiskSite') }
class << self
def generate_verifiable_key(key, expires_in:)
VerifiedKeyWithExpiration
end
end
class VerifiableKeyWithExpiration
def initialize(verifiable_key_with_expiration)
verified_key_with_expiration = ActiveFile::Sites::DiskSite.verify(verifiable_key_with_expiration)
@key = verified_key_with_expiration[:key]
@expires_at = verified_key_with_expiration[:expires_at]
end
def expired?
@expires_at && Time.now.utc > @expires_at
end
def decoded
key
end
end
class VerifiedKeyWithExpiration
def initialize(key, expires_in: nil)
@key = key
@expires_at = Time.now.utc.advance(sec: expires_in)
end
def encoded
ActiveFile::Sites::DiskSite.verify.generate({ key: @key, expires_at: @expires_at })
end
end
attr_reader :root
def initialize(root:)
@root = root
end
def upload(key, data)
File.open(make_path_for(key), "wb") do |file|
while chunk = data.read(65536)
file.write(chunk)
end
end
end
def download(key)
if block_given?
File.open(path_for(key)) do |file|
while data = file.read(65536)
yield data
end
end
else
File.open path_for(key), &:read
end
end
def delete(key)
File.delete path_for(key)
end
def exists?(key)
File.exist? path_for(key)
end
def url(key, disposition:, expires_in: nil)
if defined?(Rails)
Rails.application.routes.url_helpers.rails_disk_blob_path(key)
else
"/rails/blobs/#{key}"
end
end
def byte_size(key)
File.size path_for(key)
end
def checksum(key)
Digest::MD5.file(path_for(key)).hexdigest
end
private
def verifiable_key_with_expiration(key, expires_in: nil)
verifier.generate key: key, expires_at: Time.now.utc.advance(sec: expires_in)
end
def path_for(key)
File.join root, folder_for(key), key
end
def folder_for(key)
[ key[0..1], key[2..3] ].join("/")
end
def make_path_for(key)
path_for(key).tap { |path| FileUtils.mkdir_p File.dirname(path) }
end
end
|
