import Page from '../entity/Page';
import SeoFields from '../../SEO/entity/SeoFields';
import PageStatus from '../enums/PageStatus';
import PageAdapterInterface from './PageAdapterInterface';
import PerkAdapterInterface from '../../Perk/adapter/PerkAdapterInterface';
import SeoFieldsAdapterInterface from '../../SEO/adapter/SeoFieldsAdapterInterface';
import FileFactoryInterface from '../../File/factories/FileFactoryInterface';

export default abstract class PageAdapter implements PageAdapterInterface {
  protected imageAdapter: FileFactoryInterface;
  protected perkAdapter: PerkAdapterInterface;
  protected seoAdapter: SeoFieldsAdapterInterface;
  
  constructor(
    imageAdapter: FileFactoryInterface,
    perkAdapter: PerkAdapterInterface,
    seoAdapter: SeoFieldsAdapterInterface,
  ) {
    this.imageAdapter = imageAdapter;
    this.perkAdapter = perkAdapter;
    this.seoAdapter = seoAdapter;
  }
  
  adapt(json: any, instance: Page): Page {
    instance.id = json.id;
    instance.title = json.title;
    instance.description = json.description;
    instance.slug = json.slug;
    instance.images = (json.cover_images || []).map(each => this.imageAdapter.transformToEntity(each));
    instance.thumbnails = (json.thumbnails || []).map(each => this.imageAdapter.transformToEntity(each));
    instance.perks = (json.perks || []).map(each => this.perkAdapter.transformToEntity(each));
    instance.about_text = json.about;
    instance.about_images = (json.images || []).map(each => this.imageAdapter.transformToEntity(each));
    
    const seo_json = {
      title: json.seo_title,
      description: json.meta_description,
      keywords: json.keywords,
      images: json.graph_images,
    };
    
    instance.seo = this.seoAdapter.adapt(seo_json, new SeoFields());
    instance.status = json.status || PageStatus.pageStatusPublished;
    
    return instance;
  }
  
  prepare(instance: Page): any {
    let object = {
      id: instance.id,
      title: instance.title,
      description: instance.description,
      slug: instance.slug,
      perks: instance.perks.map(each => this.perkAdapter.prepare(each)),
      about: instance.about_text,
      //seo: this.seoAdapter.prepare(instance.seo),
      status: instance.status,
    };

    const perks_adapted = instance.perks.map(each => this.perkAdapter.prepare(each));
    const keywords_adapted = instance.seo.keywords.join(',');

    // Not using the <prepare method> due to the images are already created and we only need the <id>
    const about_images = instance.about_images.map(each => each.id);
    const images_adapted = instance.images.map(each => each.id);
    const thumbnails_adapted = instance.thumbnails.map(each => each.id);
    const seo_images = instance.seo.images.map(each => each.id);
    
    return {
      ...object,
      images: about_images,
      seo_title: instance.seo.title,
      meta_description: instance.seo.description,
      cover_images: images_adapted,
      thumbnails: thumbnails_adapted,
      perks: perks_adapted,
      graph_images: seo_images,
      keywords: keywords_adapted,
    };
  }
}