discourse/lib/site_icon_manager.rb

76 lines
2.4 KiB
Ruby

module SiteIconManager
extend GlobalPath
@cache = DistributedCache.new('icon_manager')
SKETCH_LOGO_ID = -6
ICONS = {
digest_logo: { width: nil, height: nil, settings: [:digest_logo, :logo], fallback_to_sketch: false, resize_required: false },
mobile_logo: { width: nil, height: nil, settings: [:mobile_logo, :logo], fallback_to_sketch: false, resize_required: false },
large_icon: { width: nil, height: nil, settings: [:large_icon, :logo_small], fallback_to_sketch: true, resize_required: false },
manifest_icon: { width: 512, height: 512, settings: [:manifest_icon, :large_icon, :logo_small], fallback_to_sketch: true, resize_required: true },
favicon: { width: 32, height: 32, settings: [:favicon, :large_icon, :logo_small], fallback_to_sketch: true, resize_required: false },
apple_touch_icon: { width: 180, height: 180, settings: [:apple_touch_icon, :large_icon, :logo_small], fallback_to_sketch: true, resize_required: false },
opengraph_image: { width: nil, height: nil, settings: [:opengraph_image, :large_icon, :logo_small, :logo], fallback_to_sketch: true, resize_required: false },
}
WATCHED_SETTINGS = ICONS.keys + [:logo, :logo_small]
def self.ensure_optimized!
unless @disabled
ICONS.each do |name, info|
icon = resolve_original(info)
if info[:height] && info[:width]
OptimizedImage.create_for(icon, info[:width], info[:height])
end
end
end
@cache.clear
end
ICONS.each do |name, info|
define_singleton_method(name) do
icon = resolve_original(info)
if info[:height] && info[:width]
result = OptimizedImage.find_by(upload: icon, height: info[:height], width: info[:width])
end
result = icon if !result && !info[:resize_required]
result
end
define_singleton_method("#{name}_url") do
get_set_cache("#{name}_url") do
icon = self.public_send(name)
icon ? full_cdn_url(icon.url) : ''
end
end
end
# Used in test mode
def self.disable
@disabled = true
end
def self.enable
@disabled = false
end
private
def self.get_set_cache(key)
@cache[key] ||= yield
end
def self.resolve_original(info)
info[:settings].each do |setting_name|
value = SiteSetting.send(setting_name)
return value if value
end
return Upload.find(SKETCH_LOGO_ID) if info[:fallback_to_sketch]
nil
end
end