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class Projects::MergeRequests::DiffsController < Projects::MergeRequests::ApplicationController
include DiffForPath
include DiffHelper
include RendersNotes
before_action :apply_diff_view_cookie!
before_action :commit
before_action :define_diff_vars
before_action :define_diff_comment_vars
def show
render_diffs
end
def diff_for_path
render_diffs
end
private
def render_diffs
@environment = @merge_request.environments_for(current_user).last
render json: DiffsSerializer.new(current_user: current_user).represent(@diffs, additional_attributes)
end
def define_diff_vars
@merge_request_diffs = @merge_request.merge_request_diffs.viewable.order_id_desc
@compare = commit || find_merge_request_diff_compare
return render_404 unless @compare
@diffs = @compare.diffs(diff_options)
end
def commit
return nil unless commit_id = params[:commit_id].presence
return nil unless @merge_request.all_commits.exists?(sha: commit_id)
@commit ||= @project.commit(commit_id)
end
def find_merge_request_diff_compare
@merge_request_diff =
if diff_id = params[:diff_id].presence
@merge_request.merge_request_diffs.viewable.find_by(id: diff_id)
else
@merge_request.merge_request_diff
end
return unless @merge_request_diff
@comparable_diffs = @merge_request_diffs.select { |diff| diff.id < @merge_request_diff.id }
if @start_sha = params[:start_sha].presence
@start_version = @comparable_diffs.find { |diff| diff.head_commit_sha == @start_sha }
unless @start_version
@start_sha = @merge_request_diff.head_commit_sha
@start_version = @merge_request_diff
end
end
if @start_sha
@merge_request_diff.compare_with(@start_sha)
else
@merge_request_diff
end
end
def additional_attributes
{
view_type: params[:view_type],
environment: @environment,
merge_request: @merge_request,
merge_request_diff: @merge_request_diff,
merge_request_diffs: @merge_request_diffs,
start_version: @start_version,
start_sha: @start_sha,
commit: @commit,
latest_diff: @merge_request_diff&.latest?
}
end
def define_diff_comment_vars
@new_diff_note_attrs = {
noteable_type: 'MergeRequest',
noteable_id: @merge_request.id,
commit_id: @commit&.id
}
@diff_notes_disabled = false
@use_legacy_diff_notes = !@merge_request.has_complete_diff_refs?
@grouped_diff_discussions = @merge_request.grouped_diff_discussions(@compare.diff_refs)
@notes = prepare_notes_for_rendering(@grouped_diff_discussions.values.flatten.flat_map(&:notes), @merge_request)
end
end
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