user = @user
split_list = lambda do |value|
  value.to_s.split(/[;,]/).map { |item| item.strip }.reject(&:blank?)
end

parse_period = lambda do |period|
  years = period.to_s.scan(/\b(19\d{2}|20\d{2})\b/).flatten
  return [nil, nil] if years.empty?
  [years[0], years[1]]
end

normalize_url = lambda do |value|
  return nil if value.blank?
  value.match?(/\Ahttps?:\/\//) ? value : "https://#{value}"
end

profile_from = lambda do |value, network, base_url|
  return nil if value.blank?

  if value.include?("/") || value.include?(".")
    url = normalize_url.call(value)
    username = url.to_s.split("/").last&.delete_prefix("@")
  else
    username = value.delete_prefix("@")
    url = base_url.present? ? "#{base_url}/#{username}" : nil
  end

  profile = { "network" => network }
  profile["username"] = username if username.present?
  profile["url"] = url if url.present?
  profile
end

json.basics do
  json.name user.name if user.name.present?
  json.label user.title if user.title.present?
  json.email user.email if user.email.present?
  json.phone user.phone if user.phone.present?
  json.summary user.objective if user.objective.present?

  if user.address.present?
    json.location do
      json.address user.address
    end
  end

  primary_url = user.other_page_url.presence || user.linkedin.presence || user.github.presence
  url = normalize_url.call(primary_url)
  json.url url if url.present?

  profiles = []
  profiles << profile_from.call(user.linkedin, "LinkedIn", "https://www.linkedin.com/in")
  profiles << profile_from.call(user.github, "GitHub", "https://github.com")
  profiles << profile_from.call(user.other_page_url, "Website", nil)
  profiles.compact!
  json.profiles profiles if profiles.any?
end

if user.work_experiences.active.any?
  json.work user.work_experiences.active do |work_entry|
    start_date, end_date = parse_period.call(work_entry.period)
    highlights = split_list.call(work_entry.items_csv)
    technologies = split_list.call(work_entry.technologies)
    highlights << "Technologies: #{technologies.join(', ')}" if technologies.any?

    summary = work_entry.achivements.presence
    summary = work_entry.period.presence if summary.blank? && start_date.blank? && end_date.blank?

    json.name work_entry.employer if work_entry.employer.present?
    json.position work_entry.title if work_entry.title.present?
    json.summary summary if summary.present?
    json.highlights highlights if highlights.any?
    json.startDate start_date if start_date.present?
    json.endDate end_date if end_date.present?

    if start_date.blank? && end_date.blank? && work_entry.reference_date.present?
      json.endDate work_entry.reference_date.iso8601
    end
  end
end

if user.education_entries.active.any?
  json.education user.education_entries.active do |education_entry|
    start_date, end_date = parse_period.call(education_entry.period)

    study_type = education_entry.title
    area = nil
    if study_type.present? && study_type.match?(/\s+in\s+/i)
      study_type, area = study_type.split(/\s+in\s+/i, 2)
    end

    courses = split_list.call(education_entry.items_csv)

    json.institution education_entry.institution if education_entry.institution.present?
    json.studyType study_type if study_type.present?
    json.area area if area.present?
    json.courses courses if courses.any?
    json.startDate start_date if start_date.present?
    json.endDate end_date if end_date.present?

    if start_date.blank? && end_date.blank? && education_entry.reference_date.present?
      json.endDate education_entry.reference_date.iso8601
    end
  end
end

if user.skills.active.any?
  json.skills user.skills.active do |skill|
    keywords = split_list.call(skill.detail)

    json.name skill.title if skill.title.present?
    if keywords.any?
      json.keywords keywords
    elsif skill.detail.present?
      json.level skill.detail
    end
  end
end