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# frozen_string_literal: true
module Gitlab
module Diff
module FileCollection
class Base
include Gitlab::Utils::StrongMemoize
attr_reader :project, :diff_options, :diff_refs, :fallback_diff_refs, :diffable
delegate :count, :size, :real_size, to: :diff_files
def self.default_options
::Commit.max_diff_options.merge(ignore_whitespace_change: false, expanded: false, include_stats: true)
end
def initialize(diffable, project:, diff_options: nil, diff_refs: nil, fallback_diff_refs: nil)
diff_options = self.class.default_options.merge(diff_options || {})
@diffable = diffable
@include_stats = diff_options.delete(:include_stats)
@project = project
@diff_options = diff_options
@diff_refs = diff_refs
@fallback_diff_refs = fallback_diff_refs
@repository = project.repository
end
def diffs
@diffs ||= diffable.raw_diffs(diff_options)
end
def diff_files
@diff_files ||= diffs.decorate! { |diff| decorate_diff!(diff) }
end
# This mutates `diff_files` lines.
def unfold_diff_files(positions)
positions_grouped_by_path = positions.group_by { |position| position.file_path }
diff_files.each do |diff_file|
positions = positions_grouped_by_path.fetch(diff_file.file_path, [])
positions.each { |position| diff_file.unfold_diff_lines(position) }
end
end
def diff_file_with_old_path(old_path)
diff_files.find { |diff_file| diff_file.old_path == old_path }
end
def diff_file_with_new_path(new_path)
diff_files.find { |diff_file| diff_file.new_path == new_path }
end
def clear_cache
# No-op
end
def write_cache
# No-op
end
private
def diff_stats_collection
strong_memoize(:diff_stats) do
# There are scenarios where we don't need to request Diff Stats,
# when caching for instance.
next unless @include_stats
next unless diff_refs
@repository.diff_stats(diff_refs.base_sha, diff_refs.head_sha)
end
end
def decorate_diff!(diff)
return diff if diff.is_a?(File)
stats = diff_stats_collection&.find_by_path(diff.new_path)
Gitlab::Diff::File.new(diff,
repository: project.repository,
diff_refs: diff_refs,
fallback_diff_refs: fallback_diff_refs,
stats: stats)
end
end
end
end
end
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