70 lines
1.5 KiB
Ruby
70 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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# Service class to correctly initialize Gitlab::Blame and Kaminari pagination
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# objects
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module Projects
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class BlameService
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PER_PAGE = 1000
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def initialize(blob, commit, params)
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@blob = blob
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@commit = commit
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@page = extract_page(params)
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@pagination_enabled = pagination_state(params)
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end
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attr_reader :page
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def blame
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Gitlab::Blame.new(blob, commit, range: blame_range)
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end
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def pagination
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return unless pagination_enabled
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Kaminari.paginate_array([], total_count: blob_lines_count, limit: per_page)
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.tap { |pagination| pagination.max_paginates_per(per_page) }
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.page(page)
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end
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def per_page
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PER_PAGE
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end
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private
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attr_reader :blob, :commit, :pagination_enabled
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def blame_range
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return unless pagination_enabled
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first_line = (page - 1) * per_page + 1
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last_line = (first_line + per_page).to_i - 1
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first_line..last_line
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end
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def extract_page(params)
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page = params.fetch(:page, 1).to_i
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return 1 if page < 1 || overlimit?(page)
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page
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end
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def pagination_state(params)
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return false if Gitlab::Utils.to_boolean(params[:no_pagination], default: false)
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Feature.enabled?(:blame_page_pagination, commit.project)
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end
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def overlimit?(page)
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page * per_page >= blob_lines_count + per_page
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end
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def blob_lines_count
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@blob_lines_count ||= blob.data.lines.count
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end
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end
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end
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