# frozen_string_literal: true

module Api
  class SubmissionsController < ApiBaseController
    load_and_authorize_resource :template, only: :create
    load_and_authorize_resource :submission, only: %i[show index destroy]

    before_action only: :create do
      authorize!(:create, Submission)
    end

    def index
      submissions = Submissions.search(@submissions, params[:q])
      submissions = submissions.where(template_id: params[:template_id]) if params[:template_id].present?

      if params[:template_folder].present?
        submissions = submissions.joins(template: :folder).where(folder: { name: params[:template_folder] })
      end

      submissions = paginate(submissions.preload(:created_by_user, :template, :submitters,
                                                 audit_trail_attachment: :blob))

      render json: {
        data: submissions.as_json(serialize_params),
        pagination: {
          count: submissions.size,
          next: submissions.last&.id,
          prev: submissions.first&.id
        }
      }
    end

    def show
      submitters = @submission.submitters.preload(documents_attachments: :blob, attachments_attachments: :blob)

      serialized_submitters = submitters.map do |submitter|
        Submissions::EnsureResultGenerated.call(submitter) if submitter.completed_at?

        Submitters::SerializeForApi.call(submitter)
      end

      json = @submission.as_json(
        serialize_params.deep_merge(
          include: { submission_events: { only: %i[id submitter_id event_type event_timestamp] } }
        )
      )

      if submitters.all?(&:completed_at?)
        last_submitter = submitters.max_by(&:completed_at)

        json[:documents] = serialized_submitters.find { |e| e['id'] == last_submitter.id }['documents']
        json[:status] = 'completed'
        json[:completed_at] = last_submitter.completed_at
      else
        json[:documents] = []
        json[:status] = 'pending'
        json[:completed_at] = nil
      end

      json[:submitters] = serialized_submitters

      render json:
    end

    def create
      Params::SubmissionCreateValidator.call(params, dry_run: !Docuseal.multitenant?)

      return render json: { error: 'Template not found' }, status: :unprocessable_entity if @template.nil?

      if @template.fields.blank?
        Rollbar.error("Template does not contain fields: #{@template.id}") if defined?(Rollbar)

        return render json: { error: 'Template does not contain fields' }, status: :unprocessable_entity
      end

      params[:send_email] = true unless params.key?(:send_email)
      params[:send_sms] = false unless params.key?(:send_sms)

      submissions = create_submissions(@template, params)

      Submissions.send_signature_requests(submissions)

      render json: submissions.flat_map(&:submitters)
    rescue Submitters::NormalizeValues::UnknownFieldName, Submitters::NormalizeValues::UnknownSubmitterName => e
      render json: { error: e.message }, status: :unprocessable_entity
    end

    def destroy
      @submission.update!(archived_at: Time.current)

      render json: @submission.as_json(only: %i[id], methods: %i[archived_at])
    end

    private

    def create_submissions(template, params)
      is_send_email = !params[:send_email].in?(['false', false])

      if (emails = (params[:emails] || params[:email]).presence) &&
         (params[:submission].blank? && params[:submitters].blank?)
        Submissions.create_from_emails(template:,
                                       user: current_user,
                                       source: :api,
                                       mark_as_sent: is_send_email,
                                       emails:,
                                       params:)
      else
        submissions_attrs, attachments =
          Submissions::NormalizeParamUtils.normalize_submissions_params!(submissions_params, template)

        submissions = Submissions.create_from_submitters(
          template:,
          user: current_user,
          source: :api,
          mark_as_sent: is_send_email,
          submitters_order: params[:submitters_order] || params[:order] || 'preserved',
          submissions_attrs:,
          params:
        )

        Submissions::NormalizeParamUtils.save_default_value_attachments!(attachments,
                                                                         submissions.flat_map(&:submitters))

        submissions
      end
    end

    def serialize_params
      {
        only: %i[id source submitters_order created_at updated_at archived_at],
        methods: %i[audit_log_url],
        include: {
          submitters: { only: %i[id slug uuid name email phone
                                 completed_at opened_at sent_at
                                 created_at updated_at external_id metadata],
                        methods: %i[status application_key] },
          template: { only: %i[id name created_at updated_at] },
          created_by_user: { only: %i[id email first_name last_name] }
        }
      }
    end

    def submissions_params
      permitted_attrs = [
        :send_email, :send_sms, :bcc_completed, :completed_redirect_url,
        {
          message: %i[subject body],
          submitters: [[:send_email, :send_sms, :completed_redirect_url, :uuid, :name, :email, :role,
                        :completed, :phone, :application_key, :external_id,
                        { metadata: {}, values: {}, readonly_fields: [], message: %i[subject body],
                          fields: [%i[name default_value title description
                                      readonly validation_pattern invalid_message]] }]]
        }
      ]

      if params.key?(:submitters)
        params.permit(*permitted_attrs)
      else
        key = params.key?(:submission) ? :submission : :submissions

        params.permit(
          key => [permitted_attrs]
        ).fetch(key, [])
      end
    end
  end
end