# typed: true
# frozen_string_literal: true

module RuboCop
  module Cop
    module Cask
      class ArrayAlphabetization < Base
        extend AutoCorrector

        def on_send(node)
          return unless [:zap, :uninstall].include?(name = node.method_name)

          node.each_descendant(:pair).each do |pair|
            symbols = pair.children.select(&:sym_type?).map(&:value)
            # For `zap`s, we only care about `trash` arrays.
            next if name == :zap && !symbols.include?(:trash)
            # Don't order `uninstall` arrays that contain commands.
            next if name == :uninstall && (symbols & [:signal, :script, :early_script, :args, :input]).any?

            pair.each_descendant(:array).each do |array|
              if array.children.length == 1
                add_offense(array, message: "Avoid single-element arrays by removing the []") do |corrector|
                  corrector.replace(array.source_range, array.children.first.source)
                end
              end

              next if array.children.length <= 1

              sorted_array = sort_array(array.source.split("\n")).join("\n")

              next if array.source == sorted_array

              add_offense(array, message: "The array elements should be ordered alphabetically") do |corrector|
                corrector.replace(array.source_range, sorted_array)
              end
            end
          end
        end

        def sort_array(source)
          # Combine each comment with the line below it so that they remain connected to the line they comment
          combined_source = source.each_with_index.map do |line, index|
            if line.strip.start_with?('#') && index < source.length - 1
              "#{line}\n#{source[index + 1]}"
            elsif source[index - 1]&.strip&.start_with?('#')
              nil
            else
              line
            end
          end.compact

          # Separate the lines into those that should be sorted and those that should not
          # ie. skip the opening and closing brackets of the array
          to_sort, to_keep = combined_source.partition { |line| !line.include?('[') && !line.include?(']') }

          # Sort the lines that should be sorted
          to_sort.sort! do |a, b|
            a_non_comment = a.split("\n").reject { |line| line.strip.start_with?('#') }.first
            b_non_comment = b.split("\n").reject { |line| line.strip.start_with?('#') }.first
            a_non_comment.downcase <=> b_non_comment.downcase
          end

          # Merge the sorted lines and the unsorted lines, preserving the original positions of the unsorted lines
          combined_source.map { |line| to_keep.include?(line) ? line : to_sort.shift }
        end
      end
    end
  end
end