import { HttpResourceController } from "../http-resource-controller";
import { Response } from "../http-petition";

import Log from "../../libs/log";

import Db from "../../data-storage/db";

import { getAuthor } from "../../use-cases/author";
import {
  getPost,
  allPosts,
  addPost,
  updatePost,
  deletePost
} from "../../use-cases/post";
import AuthorDb from "../../data-storage/db/author";
import PostDb from "../../data-storage/db/post";

export default class PostsController extends HttpResourceController {
  private _db: Db;
  private _log: Log;

  constructor() {
    super();
    this._db = new Db();
    this._log = Log.instance;
  }

  public async index(): Promise<Response> {
    try {
      const postDb = new PostDb(this._db);
      const posts = await allPosts.get(postDb).catch(err => {
        throw err;
      });

      return this.success({
        status: "OK",
        statusCode: 200,
        payload: posts
      });
    } catch (err) {
      this._log.logger.error("Ocurrió un error", err);
      return this.error({
        error: err.message,
        status: "NO_OK",
        statusCode: 422
      });
    }
  }

  public async store(): Promise<Response> {
    try {
      const authorDb = new AuthorDb(this._db);
      const author = await getAuthor
        .retrieve(this.request.payload.authorId, authorDb)
        .catch(err => {
          throw err;
        });

      const postDb = new PostDb(this._db);
      const post = await addPost
        .save({ ...this.request.payload, author }, postDb)
        .catch(err => {
          throw err;
        });

      return this.success({
        status: "OK",
        statusCode: 200,
        payload: post
      });
    } catch (err) {
      this._log.logger.error("An error has occurred:", err.message);
      return this.error({
        error: err.message,
        status: "NO_OK",
        statusCode: 422
      });
    }
  }

  public async show(): Promise<Response> {
    try {
      const postDb = new PostDb(this._db);
      const post = await getPost
        .byId(Number(this.request.params.id), postDb)
        .catch(err => {
          throw err;
        });

      const authorDb = new AuthorDb(this._db);
      const author = await getAuthor
        .retrieve(post.authorId, authorDb)
        .catch(err => {
          throw err;
        });
      post.author = author;

      return this.success({
        status: "OK",
        statusCode: 200,
        payload: post
      });
    } catch (err) {
      this._log.logger.error("An error has occurred", err);
      return this.error({
        error: err.message,
        status: "NO_OK",
        statusCode: 422
      });
    }
  }

  public async update(): Promise<Response> {
    try {
      const postDb = new PostDb(this._db);
      const post = await getPost
        .byId(Number(this.request.params.id), postDb)
        .catch(err => {
          throw err;
        });

      const authorDb = new AuthorDb(this._db);
      const author = await getAuthor
        .retrieve(this.request.payload.authorId, authorDb)
        .catch(err => {
          throw err;
        });

      post.id = this.request.params.id;
      post.author = author;
      await updatePost
        .save(post, { ...this.request.payload }, postDb)
        .catch(err => {
          throw err;
        });

      return this.success({
        status: "OK",
        statusCode: 200,
        payload: post
      });
    } catch (err) {
      this._log.logger.error("An error has occurred", err);
      return this.error({
        error: err.message,
        status: "NO_OK",
        statusCode: 422
      });
    }
  }

  public async destroy(): Promise<Response> {
    try {
      const postDb = new PostDb(this._db);
      const post = await getPost
        .byId(Number(this.request.params.id), postDb)
        .catch(err => {
          throw err;
        });

      await deletePost.save(post, postDb).catch(err => {
        throw err;
      });

      return this.success({
        status: "OK",
        statusCode: 200,
        payload: post.id
      });
    } catch (err) {
      this._log.logger.error("An error has occurred", err);
      return this.error({
        error: err.message,
        status: "NO_OK",
        statusCode: 422
      });
    }
  }
}