# frozen_string_literal: true

module Submissions
  module CreateFromSubmitters
    module_function

    def call(template:, user:, submissions_attrs:, source:, submitters_order:, params: {})
      preferences = Submitters.normalize_preferences(user.account, user, params)

      Array.wrap(submissions_attrs).filter_map do |attrs|
        submission_preferences = Submitters.normalize_preferences(user.account, user, attrs)
        submission_preferences = preferences.merge(submission_preferences)

        set_submission_preferences = submission_preferences.slice('send_email', 'bcc_completed')
        set_submission_preferences['send_email'] = true if params['send_completed_email']

        submission = template.submissions.new(created_by_user: user, source:,
                                              account_id: user.account_id,
                                              preferences: set_submission_preferences,
                                              expire_at: attrs[:expire_at],
                                              template_submitters: [], submitters_order:)

        maybe_set_template_fields(submission, attrs[:submitters])

        attrs[:submitters].each_with_index do |submitter_attrs, index|
          uuid = find_submitter_uuid(template, submitter_attrs, index)

          next if uuid.blank?
          next if submitter_attrs.slice('email', 'phone', 'name').compact_blank.blank?

          submission.template_submitters << template.submitters.find { |e| e['uuid'] == uuid }

          is_order_sent = submitters_order == 'random' || index.zero?

          build_submitter(submission:, attrs: submitter_attrs, uuid:,
                          is_order_sent:, user:,
                          preferences: preferences.merge(submission_preferences))
        end

        next if submission.submitters.blank?

        submission.tap(&:save!)
      end
    end

    def maybe_set_template_fields(submission, submitters_attrs, default_submitter_uuid: nil)
      template_fields = (submission.template_fields || submission.template.fields).deep_dup

      submitters_attrs.each_with_index do |submitter_attrs, index|
        submitter_uuid = default_submitter_uuid || find_submitter_uuid(submission.template, submitter_attrs, index)

        process_readonly_fields_param(submitter_attrs[:readonly_fields], template_fields, submitter_uuid)
        process_field_values_param(submitter_attrs[:values], template_fields, submitter_uuid)

        process_fields_param(submitter_attrs[:fields], template_fields, submitter_uuid)
      end

      if template_fields != (submission.template_fields || submission.template.fields) ||
         submitters_attrs.any? { |e| e[:completed].present? }
        submission.template_fields = template_fields
        submission.template_schema = submission.template.schema
      end

      submission
    end

    def process_readonly_fields_param(readonly_fields, template_fields, submitter_uuid)
      return if readonly_fields.blank?

      template_fields.each do |f|
        next if f['submitter_uuid'] != submitter_uuid ||
                (!f['name'].in?(readonly_fields) &&
                 !f['name'].to_s.downcase.in?(readonly_fields) &&
                 !f['name'].to_s.parameterize.underscore.in?(readonly_fields))

        f['readonly'] = true
      end
    end

    def process_field_values_param(values, template_fields, submitter_uuid)
      return if values.blank?

      template_fields.each do |f|
        next if f['type'].in?(%w[signature image initials file])
        next if f['submitter_uuid'] != submitter_uuid

        next unless values.key?(f['uuid'])

        value = values[f['uuid']]

        if value.present?
          f['default_value'] = value
        else
          f.delete('default_value')
        end
      end
    end

    def process_fields_param(fields, template_fields, submitter_uuid)
      return if fields.blank?

      template_fields.each do |f|
        next if f['submitter_uuid'] != submitter_uuid

        field_configs = fields.find do |e|
          if e['name'].present?
            e['name'].to_s.casecmp(f['name'].to_s).zero? || e['name'] == f['name'].to_s.parameterize.underscore
          else
            e['uuid'] == f['uuid']
          end
        end

        next if field_configs.blank?

        assign_field_attrs(f, field_configs)
      end
    end

    def assign_field_attrs(field, attrs)
      field['title'] = attrs['title'] if attrs['title'].present?
      field['description'] = attrs['description'] if attrs['description'].present?
      field['readonly'] = attrs['readonly'] if attrs.key?('readonly')
      field['redacted'] = attrs['redacted'] if attrs.key?('redacted')
      field['required'] = attrs['required'] if attrs.key?('required')

      if attrs.key?('default_value') && !field['type'].in?(%w[signature image initials file])
        if attrs['default_value'].present?
          field['default_value'] = Submitters::NormalizeValues.normalize_value(field, attrs['default_value'])
        else
          field.delete('default_value')
        end
      end

      field['preferences'] = (field['preferences'] || {}).merge(attrs['preferences']) if attrs['preferences'].present?

      return field if attrs['validation_pattern'].blank?

      field['validation'] = {
        'pattern' => attrs['validation_pattern'],
        'message' => attrs['invalid_message']
      }.compact_blank

      field
    end

    def find_submitter_uuid(template, attrs, index)
      uuid = attrs[:uuid].presence
      uuid ||= template.submitters.find { |e| e['name'].to_s.casecmp(attrs[:role].to_s).zero? }&.dig('uuid')

      uuid || template.submitters[index]&.dig('uuid')
    end

    def build_submitter(submission:, attrs:, uuid:, is_order_sent:, user:, preferences:)
      email = Submissions.normalize_email(attrs[:email])
      submitter_preferences = Submitters.normalize_preferences(submission.account, user, attrs)
      values = attrs[:values] || {}

      phone_field_uuid =
        (submission.template_fields || submission.template.fields).find do |f|
          values[f['uuid']].present? && f['type'] == 'phone'
        end&.dig('uuid')

      submitter =
        submission.submitters.new(
          email:,
          phone: (attrs[:phone] || values[phone_field_uuid]).to_s.gsub(/[^0-9+]/, ''),
          name: attrs[:name],
          external_id: attrs[:external_id].presence || attrs[:application_key],
          completed_at: attrs[:completed].present? ? Time.current : nil,
          values: values.except(phone_field_uuid),
          metadata: attrs[:metadata] || {},
          preferences: preferences.merge(submitter_preferences)
                                  .merge({ default_values: attrs[:values] }.compact_blank)
                                  .except('bcc_completed'),
          uuid:
        )

      submitter.sent_at =
        submitter.preferences['send_email'] != false && email.present? && is_order_sent ? Time.current : nil

      assign_completed_attributes(submitter) if submitter.completed_at?

      submitter
    end

    def assign_completed_attributes(submitter)
      submitter.values = Submitters::SubmitValues.merge_default_values(submitter)
      submitter.values = Submitters::SubmitValues.merge_formula_values(submitter)
      submitter.values = Submitters::SubmitValues.maybe_remove_condition_values(submitter)

      submitter.values = submitter.values.transform_values do |v|
        v == '{{date}}' ? Time.current.in_time_zone(submitter.submission.account.timezone).to_date.to_s : v
      end

      submitter
    end
  end
end