smc/grandham

# frozen_string_literal: true

namespace :grandham do
  desc "Import information from old Malayalagrandham database (from exported json file). Set the file path in 'FROM' environment variable"
  task import: :environment do
    language = Language.find_by(short_code: "ML")
    books = JSON.load(open(File.join(ENV["FROM"])).read)
    import_progress_bar = ProgressBar.create(format: "%a |%b>%i| %p%% %t", total: books.count)

    import_map = {
      "Title" => "title",
      "Pages" => "pages",
      "Year" => "year",
      "Edition" => "edition",
      "Titleorg" => "title_orginal",
      "Vol" => "volume",
      "Series" => "series",
      "Preface" => "preface",
      "Length" => "length",
      "Price" => "price",
      "Note" => "note",
      "DDC" => "ddc",
      "Illustrator" => "illustrator"
    }

    books.each do |book|
      import_progress_bar.increment

      book_obj = language.books.new

      import_map.each do |old_key, new_key|
        book_obj[new_key] = book[old_key] unless book[old_key] == "None"
      end

      book_obj.save! && book_obj.approve!

      book_obj.new_items.create user_id: User.first.id, language_id: Language.first.id, state: "approved"

      author_info = book["Author"]
      if author_info.include?("[")
        book_obj.authors << language.authors.where(name: book["Author"]).first_or_create!
      else
        author_info.split(";").each do |author|
          book_obj.authors << language.authors.where(name: author).first_or_create!
        end
      end

      book["Location"].split(";").each do |library|
        library_name, library_place = library.split(",")
        book_obj.libraries << language.libraries.where(name: library_name, place: library_place).first_or_create!
      end

      publisher_name, publisher_place = book["publisher"].split(",")
      book_obj.publishers << language.publishers.where(name: publisher_name, place: publisher_place).first_or_create!
    end
  end
end