# desc "Explaining what the task does"
# task :universal_table do
#   # Task goes here
# end
require 'rubyXL'
namespace :universal_table_tasks do
  task :prepare_download,[:utable_id, :url] => :environment do |task,args|
    id = args.utable_id
    I18n.locale = :zh_tw
    table = UTable.find(id)
    ac = ActionController::Base.new()
    host_url = Site.first.root_url
    if host_url == "http://"
      host_url = "http://#{args.url}"
    end
    xlsx = ac.render_to_string handlers: [:axlsx], formats: [:xlsx], template: "utable_export/export", locals: {table: table, site_in_use_locales: Site.first.in_use_locales, url: host_url}
    dirname = "public/uploads/utable_export/#{id}"
    FileUtils.mkdir_p(dirname) unless File.exist?(dirname)
    f = "#{dirname}/#{table.title.gsub(/[ "'*@#$%^&()+=;:.,?>|\\\/<~_!：，、。！？；「」〈〉【】／]/,'')}.xlsx"
    if File.exist?(f)
      File.delete(f)
    end
    file = File.open(f, "w")
    xlsx.force_encoding("utf-8")
    file.write(xlsx)
  end

  desc "Import entries from XLSX file"
  task :import, [:file_path, :table_id, :site_locales] => :environment do |t, args|
    def create_get_table_tags(entry,new_tags=nil,module_app)
      updated_tags = []
      new_tags.each do |tag_str|
        tag_str = tag_str.gsub(/^#+/, '').downcase.strip
        hashtag = module_app.hashtags.where(name: tag_str).first rescue nil
        if hashtag.nil?
          hashtag = Hashtag.new
          hashtag.name = tag_str
          hashtag.module_app_ids << module_app.id.to_s
          hashtag.save
          updated_tags << hashtag.id
        else
          entry.hashtags.include?(hashtag) || updated_tags << hashtag.id
        end
      end
      entry.hashtags= updated_tags
    end

    file_path = args[:file_path]
    table_id = args[:table_id]
    site_locales = args[:site_locales].to_s.split(":").map(&:to_sym)

    if !file_path || !File.exist?(file_path)
      puts "Invalid or missing file: #{file_path}"
      exit(1)
    end

    workbook = RubyXL::Parser.parse(file_path)
    sheet = workbook[0]

    if sheet.count > 503
      puts "More than 500 entries. Please split the entries in different files."
      exit(1)
    end

    table = UTable.find_by(id: table_id)
    unless table
      puts "Table not found with ID #{table_id}"
      exit(1)
    end

    column_titles = sheet[0].cells.map { |c| c.value.to_s.strip }
    column_keys   = sheet[1].cells.map { |c| c.value.to_s.strip }
    column_types  = sheet[2].cells.map { |c| c.value.to_s.strip }

    columns = column_keys.uniq.map.with_index do |key, i|
      tc = table.table_columns.where(key: key).first
      [i, tc]
    end.to_h

    sheet.each_with_index do |row, i|
      if i >= 3 && row.cells.all? { |c| c.nil? || c.value.to_s.strip.blank? }
        table.inc(current_xlsx_value: 1)
        next
      end

      next if i < 3
      uid_val = row[0].value.to_s.strip rescue nil

      te = uid_val.present? ? TableEntry.where(uid: uid_val, u_table_id: table.id).first_or_initialize : TableEntry.new
      te.u_table = table
      skip = 0
      tc_idx = 0

      row.cells.each_with_index do |cell, col_idx|
        next if skip > 0 && (skip -= 1) >= 0
        val = cell.value
        tc = columns[tc_idx]
        tc_idx += 1
        next if tc.nil?

        ce = te.column_entries.where(table_column_id: tc.id).first || ColumnEntry.new(table_column_id: tc.id)

        case tc.type
        when "text", "editor"
          v = {}
          site_locales.each_with_index do |locale, offset|
            v[locale.to_s] = row[col_idx + offset].value.to_s rescue ""
          end
          skip = site_locales.size - 1
          tc.type == "text" ? ce.text_translations = v : ce.content_translations = v

        when "integer"
          ce.number = val.present? ? val.to_i : nil

        when "image"
          ce.remote_image_url = val if val.present?

        when "file"
          file_urls = val.to_s.split(";").map(&:strip)
          file_titles = {}
          skip = site_locales.size
          site_locales.each_with_index do |locale, locale_idx|
            file_titles[locale.to_s] = row[col_idx + locale_idx + 1].value.to_s.split(";").map(&:strip)
          end
          # ce.column_entry_files.destroy_all
          # ce.column_entry_files = []
          cef_ids = ce.column_entry_files.pluck(:id)

          file_urls.each_with_index do |remote_url, file_idx|
            if remote_url.blank?
              skip = site_locales.size
            end
            next if remote_url.blank?
            file = ColumnEntryFile.new
            file.remote_file_url = remote_url
            titles = {}
            site_locales.each_with_index do |locale, locale_idx|
              titles[locale.to_s] = file_titles[locale.to_s][file_idx] rescue file.file.file.filename
            end
            file.file_title_translations = titles
            file.save!
            ce.column_entry_files << file
          end
          ColumnEntryFile.where(:id.in => cef_ids).destroy_all

        when "date"
          ce.date = val

        when "period"
          skip = 1
          ce.period_from = val
          ce.period_to = row[col_idx + 1].value rescue nil
        end

        ce.save!
        te.column_entries << ce
      end

      tags_text = row.cells[-2].value.to_s rescue ""
      module_app = ModuleApp.find_by_key("universal_table")
      create_get_table_tags(te, tags_text.split(";"), module_app) if row.cells.count >= 2

      related_uids = row.cells[-1].value.to_s.split(";").map(&:strip)
      related_ids = TableEntry.where(:uid.in => related_uids).pluck(:id)
      te.related_entries = related_ids.join(",") if row.cells.count >= 1

      te.save!
      te.fix_have_data
      te.uid = uid_val if uid_val.present?
      te.save!
      table.inc(current_xlsx_value: 1)
    end
    # Cleanup
		File.delete(file_path) if File.exist?(file_path)
    puts "Import finished. Total entries in table: #{table.table_entries.count}"
  end

  desc "Migrate old tags to new tags"
  task :migrate_hashtags => :environment do
    module_app = ModuleApp.find_by_key("universal_table")
    dataset = {}
    TableTag.all.each do |tt|
      next if tt.title.blank? # Skip if tag name is blank
      next if tt.table_entries.empty? # Skip if no entries are associated with the tag
      puts "Processing tag: #{tt.title}"
      module_app.reload
      tag_str = tt.title.gsub(/^#+/, '').downcase.strip
      hashtag = module_app.hashtags.where(name: tag_str).first_or_initialize
      hashtag.module_app_ids << module_app.id.to_s unless hashtag.module_app_ids.include?(module_app.id.to_s)
      puts "New record #{hashtag.new_record?}"
      hashtag.save if hashtag.new_record?
      puts "Hashtag ID: #{hashtag.id} - #{hashtag.name}"
      tt.table_entries.each do |te|
        unless te.hashtags.include?(hashtag)
          dataset[te] ||= []
          dataset[te] << hashtag.id
        end
      end
    end
    dataset.each do |te, tag_ids|
      puts "Updating TableEntry #{te.id} with tags: #{tag_ids.join(', ')}"
      te.hashtags= tag_ids
      te.save
    end
  end
end