import { inject, injectable } from "inversify";
import BlogPost, { IBlogPost, IBlogPostResource, blogPostType, blogPostCategoryType, IBlogPostRelationships } from "../blogPost";
import { IResourceMapper, IJsonApiResponse, IJsonApiResource, IJsonApiRelationshipResource } from "../../interfaces";
import * as TYPES from "../../types";
import Mapper from "../../mapper";

@injectable()
export class BlogPostMapper extends Mapper<IBlogPost, IBlogPostResource> {
  @inject(TYPES.User) model: IBlogPost;

  toModel(resource: IBlogPostResource, included: IJsonApiResource[] = []): IBlogPost {
    const model = new BlogPost();
    model.id = resource.id;

    model.attribution = resource.attributes.attribution;
    model.publicationDate = new Date(resource.attributes.publication_date);
    model.excerpt = resource.attributes.excerpt;
    model.featuredImage = resource.attributes.featured_image;
    model.featuredProduct = resource.attributes.featured_product;
    model.content = resource.attributes.content[0].text;
    model.metadata = resource.attributes.seo_metadata;
    model.title = resource.attributes.title;

    const relationships = resource.relationships;
    if (relationships.categories) {
      const categories = relationships.categories.data as IJsonApiRelationshipResource[];
      model.categories = categories.reduce((memo, c) => {
        const category = included.find((i) => i.type === blogPostCategoryType && i.id === c.id);

        if (category) {
          memo.push({
            id: category.id,
            name: category.attributes.text,
            slug: category.attributes.slug,
          });
        }

        return memo;
      }, []);
    }

    return model;
  }

  toResource(model: IBlogPost): IBlogPostResource {
    const resource = {
      id: model.id,
      type: blogPostType,
      attributes: {
        attribution: model.attribution,
        publication_date: model.publicationDate.toISOString(),
        excerpt: model.excerpt,
        featured_image: model.featuredImage,
        featured_product: model.featuredProduct,
        content: [{ text: model.content }],
        seo_metadata: model.metadata,
        title: model.title,
      },
    };

    return resource;
  }
}

export default BlogPostMapper;