# frozen_string_literal: true

require_relative "./make_pr/base"

module Neetob
  class CLI
    module Github
      class Search < MakePr::Base
        attr_accessor :repos, :key_to_search, :search_file_path, :replacement_term, :sandbox

        def initialize(repos, key_to_search, search_file_path, replacement_term, sandbox = false)
          @key_to_search = key_to_search
          @replacement_term = replacement_term
          branch_name = build_branch_name
          pr_title = build_pr_title
          super(pr_title, branch_name)
          @search_file_path = search_file_path
          @repos = repos
          @sandbox = sandbox
        end

        def run
          matching_repos = find_all_matching_apps_or_repos(repos, :github, sandbox)
          matching_repos.each do |repo|
            ui.info("\nSearching in #{repo}")
            clone_repo_in_tmp_dir(repo)
            begin
              if replacement_term.nil?
                find_and_print_matching_lines(repo)
              else
                check_and_delete_remote_branch(repo)
                find_and_replace_keyword(repo)
                ui.say("No changes were made to #{repo}, check if keyword exists.") and next if !are_changes_made?(repo)

                ui.info(add_commmit_and_push_changes(repo))
                delete_local_feature_branch(repo)
                pull_request = client.create_pull_request(repo, "main", branch_name, pr_title)
                ui.success("Successfully replaced \"#{key_to_search}\" with \"#{replacement_term}\" in #{repo}")
                ui.success("PR Link:- #{pull_request.html_url}")
              end
            rescue StandardError => e
              ExceptionHandler.new(e).process
            end
          end
          `rm -rf /tmp/neetob`
        end

        private

          def search_for_keyword(repo)
            `#{cd_to_repo(repo)} && \
              find . -type f -iregex "#{search_file_path}" | xargs grep -E "#{key_to_search}"`
          end

          def find_and_print_matching_lines(repo)
            files_with_matching_lines = find_matching_files(repo)
            files_with_matching_lines.empty? ? ui.error("Keyword not found")
              : print_matching_lines(files_with_matching_lines)
          end

          def find_matching_files(repo)
            result = search_for_keyword(repo)
            result.each_line.reduce({}) do |lines_by_file, line|
              filename, content = line.split(":", 2)
              lines_by_file[filename] ||= []
              lines_by_file[filename] << content.strip
              lines_by_file
            end
          end

          def print_matching_lines(files_with_matching_lines)
            files_with_matching_lines.each do |file, list_of_lines|
              ui.info("#{file}")
              list_of_lines.each { |line| ui.success(" ↳#{line}") }
            end
          end

          def are_changes_made?(repo)
            changes_made = `#{cd_to_repo(repo)} && git checkout #{branch_name} && git status`
            !changes_made.include?("nothing to commit")
          end

          def find_and_replace_keyword(repo)
            `#{cd_to_repo(repo)} && \
             find . -type f -regex #{search_file_path} -print0 | \
             xargs -0 sed -i '' 's/#{key_to_search}/#{replacement_term}/g'`
          end

          def build_pr_title
            "Replaced \"#{key_to_search}\" with \"#{replacement_term}\""
          end

          def build_branch_name
            branch_name = "search-#{key_to_search}-and-replace-with-#{replacement_term}"
            branch_name.gsub(/\W/, "_")
          end
      end
    end
  end
end