Files
danbooru/app/logical/media_asset_query.rb
evazion 2c33539be7 uploads: allow searching uploads and media assets by metatag.
Allow searching the /uploads and /media_assets pages by the following metatags:

* id:
* md5:
* width:
* height:
* duration:
* mpixels:
* ratio:
* filesize:
* filetype:
* date:
* age:
* status:<processing|active|deleted|expunged|failed> (for /media_assets)
* status:<pending|processing|active|failed> (for /uploads)
* is:<filetype>, is:<status>
* exif:

Examples:

* https://betabooru.donmai.us/media_assets?search[ai_tags_match]=filetype:png
* https://betabooru.donmai.us/uploads?search[ai_tags_match]=filetype:png

Note that in /uploads search, the id:, date:, and age: metatags refer to the upload media asset, not
the upload itself.

Note also that uploads may contain multiple assets, so for example searching uploads by
`filetype:png` will return all uploads containing at least one PNG file, even if they contain other
non-PNG files.
2022-12-07 01:02:19 -06:00

90 lines
2.9 KiB
Ruby

# frozen_string_literal: true
# A MediaAssetQuery is a tag search performed on media assets (or upload media assets) using AI tags.
class MediaAssetQuery
extend Memoist
attr_reader :search_string
delegate :to_infix, :to_pretty_string, to: :ast
alias_method :to_s, :to_infix
def initialize(search_string)
@search_string = search_string.to_s.strip
end
def self.search(search_string, **options)
new(search_string).search(**options)
end
def ast
@ast ||= PostQuery::Parser.parse(search_string)
end
def normalized_ast
@normalized_ast ||= ast.to_cnf.rewrite_opts.trim
end
def search(relation: MediaAsset.all, foreign_key: :id, score_range: (50..))
normalized_ast.visit do |node, *children|
case node.type
in :all
relation.all
in :none
relation.none
in :tag
ai_tag = AITag.named(node.name).where(score: score_range)
relation.where(ai_tag.where(AITag.arel_table[:media_asset_id].eq(relation.arel_table[foreign_key])).arel.exists)
in :metatag
metatag_matches(node.name, node.value, relation)
in :wildcard
relation.none
in :not
children.first.negate_relation
in :and
joins = children.flat_map(&:joins_values)
orders = children.flat_map(&:order_values)
nodes = children.map { |child| child.joins(joins).order(orders) }
nodes.reduce(&:and)
in :or
joins = children.flat_map(&:joins_values)
orders = children.flat_map(&:order_values)
nodes = children.map { |child| child.joins(joins).order(orders) }
nodes.reduce(&:or)
end
end
end
def metatag_matches(name, value, relation)
case name
when "id"
relation.attribute_matches(value, :id)
when "md5"
relation.attribute_matches(value, "media_assets.md5", :md5)
when "width"
relation.attribute_matches(value, "media_assets.image_width")
when "height"
relation.attribute_matches(value, "media_assets.image_height")
when "duration"
relation.attribute_matches(value, "media_assets.duration", :float)
when "mpixels"
relation.attribute_matches(value, "(media_assets.image_width * media_assets.image_height) / 1000000.0", :float)
when "ratio"
relation.attribute_matches(value, "ROUND(media_assets.image_width::numeric / media_assets.image_height::numeric, 2)", :ratio)
when "filesize"
relation.attribute_matches(value, "media_assets.file_size", :filesize)
when "filetype"
relation.attribute_matches(value, "media_assets.file_ext", :enum)
when "date"
relation.attribute_matches(value, :created_at, :date)
when "age"
relation.attribute_matches(value, :created_at, :age)
when "status"
relation.attribute_matches(value, :status, :enum)
when "is"
relation.is_matches(value)
when "exif"
relation.exif_matches(value)
end
end
end