119 lines
3.2 KiB
Ruby
119 lines
3.2 KiB
Ruby
class Screenshot < ApplicationRecord
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belongs_to :package, inverse_of: :screenshots
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belongs_to :user, inverse_of: :screenshots
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# Default sorting:
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# - unapproved first (to see them at the top when moderating)
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# - otherwise show newest first
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default_scope { order(approved: :asc, hidden: :asc, created_at: :desc) }
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# Shrine
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include ImageUploader::Attachment(:simage) # adds an `simage` virtual attribute
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# Return caption for full-screen screenshots.
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# Takes the description of a screenshot if available.
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# Otherwise it falls back to the general description of its package.
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def caption
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if self.description.present?
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"#{self.description}"
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else
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"#{self.package.description}"
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end
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end
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# Future use…
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# def uploader
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# if self.user
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# self.user.name
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# else
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# 'Anonymous'
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# end
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# end
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# Long status text for public users
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def status
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text = 'This image '
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if self.approved
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text << 'is public'
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else
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text << 'has to be moderated before being publicly visible'
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end
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if self.markedfordelete
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text << ' (and was requested to be removed)'
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end
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return text
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end
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# Brief text describing the status of this screenshots (for admins)
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def adminstatus
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if self.approved
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'Public'
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else
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#fa_icon('hourglass') + 'Waiting for approval'
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'Waiting for approval'
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end
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end
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# Publish a screenshot from the moderation queue
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def approve!
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self.approved = true
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self.save!
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end
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# Hide a screenshot from the public. Moderator level can do this.
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def hide!
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self.hidden = true
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self.save!
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end
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def unhide!
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self.hidden = false
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self.save!
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end
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# Get the newest screenshots regardless of the package it belongs to
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def self.newest
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self.order(created_at: :desc)
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end
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# Return the part of the version up to the first - or +
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def upstream_version
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self.version.split(/[\-\+]/).first
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end
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# Returns the path to this screenshot's image on disk
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def disk_path
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ActiveStorage::Blob.service.send(:path_for, self.image.key)
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end
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# Returns the MD5 hex digest of the current screenshot's data
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def checksum
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# local files stored on disk:
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# url = "#{Rails.root}/public/#{attachment.path}"
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Digest::MD5.hexdigest(disk_path)
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# remote files stored on another person's computer:
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#url = attachment.url
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#Digest::MD5.base64digest(Net::HTTP.get(URI(url)))
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end
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private
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# Validator that checks if the image has already been uploaded.
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# A generic uniqueness validator does not work because it would attribute
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# the error to the :image_fingerprint field and not the actual :image field.
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# Currently this check makes sure that the same screenshot is not uploaded
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# twice for the same package. However it allows the screenshot to be uploaded
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# for two different packages. Restricting that further may happen later.
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def validate_image_is_unique
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# Look for images with the same checksum / image_fingerprint
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if screenshot=Screenshot.find_by(image_fingerprint: image_fingerprint, package_id: self.package.id)
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unless screenshot.id == self.id
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errors.add(:image, "has already been uploaded for this package")
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end
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end
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end
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end
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