181 lines
3.3 KiB
Ruby
181 lines
3.3 KiB
Ruby
# Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
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module StaticAssets
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=begin
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file_attributes = StaticAssets.data_url_attributes(data_url)
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returns
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{
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mime_type: 'image/png',
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content: image_bin_content,
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file_extention: 'png',
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}
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=end
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def self.data_url_attributes(data_url)
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data = {}
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if data_url =~ %r{^data:(.+?);base64,(.+?)$}
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data[:mime_type] = $1
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data[:content] = Base64.decode64($2)
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if data[:mime_type] =~ %r{/(.+?)$}
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data[:file_extention] = $1
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end
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return data
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end
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raise "Unable to parse data url: #{data_url&.slice(0, 100)}"
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end
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=begin
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store image 1:1 in backend and return filename
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filename = StaticAssets.store_raw(content, content_type)
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returns
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filename # hash.png
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=end
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def self.store_raw(content, content_type)
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Store.remove(object: 'System::Logo', o_id: 1)
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file = Store.add(
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object: 'System::Logo',
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o_id: 1,
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data: content,
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filename: 'logo_raw',
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preferences: {
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'Content-Type' => content_type
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},
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created_by_id: 1,
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)
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filename(file)
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end
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=begin
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read image 1:1 size in backend and return file (Store model)
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store = StaticAssets.read_raw
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returns
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store # Store model, e.g. store.content or store.preferences
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=end
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def self.read_raw
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list = Store.list(object: 'System::Logo', o_id: 1)
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if list && list[0]
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return Store.find(list[0])
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end
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raise 'No such raw logo!'
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end
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=begin
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store image in right size (resized) in backend and return filename
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filename = StaticAssets.store( content, content_type )
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returns
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filename # hash.png
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=end
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def self.store(content, content_type)
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Store.remove(object: 'System::Logo', o_id: 2)
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file = Store.add(
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object: 'System::Logo',
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o_id: 2,
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data: content,
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filename: 'logo',
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preferences: {
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'Content-Type' => content_type
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},
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created_by_id: 1,
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)
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StaticAssets.sync
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filename(file)
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end
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=begin
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read image size from backend (if not exists, read 1:1 size) and return file (Store model)
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store = StaticAssets.read
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returns
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store # Store model, e.g. store.content or store.preferences
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=end
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def self.read
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# use reduced dimensions
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list = Store.list(object: 'System::Logo', o_id: 2)
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# as fallback use 1:1
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if !list || !list[0]
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list = Store.list(object: 'System::Logo', o_id: 1)
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end
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# store hash in config
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return if !list || !list[0]
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file = Store.find(list[0].id)
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filelocation = filename(file)
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Setting.set('product_logo', filelocation)
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file
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end
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=begin
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generate filename based on Store model
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filename = StaticAssets.filename(store)
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=end
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def self.filename(file)
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hash = Digest::MD5.hexdigest(file.content)
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extention = ''
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case file.preferences['Content-Type']
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when %r{jpg|jpeg}i
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extention = '.jpg'
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when %r{png}i
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extention = '.png'
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when %r{gif}i
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extention = '.gif'
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when %r{svg}i
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extention = '.svg'
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end
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"#{hash}#{extention}"
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end
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=begin
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sync image to fs (public/assets/images/hash.png)
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StaticAssets.sync
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=end
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def self.sync
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file = read
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return if !file
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path = Rails.root.join('public', 'assets', 'images', filename(file))
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File.open(path, 'wb') do |f|
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f.puts file.content
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end
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end
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end
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