import { Injectable } from '@angular/core';
import { Post } from '../../../model/Post';
import { AuthService } from '../auth/auth.service';

@Injectable({
  providedIn: 'root'
})
export class PostService {

  constructor(private auth: AuthService) { }

  examplePosts: Array<Post> = new Array<Post>(
    {
      user: {
        username: "Zámbó Jimmy",
        picture: "assets/placeholder-profile-picture.png",
        followed: true
      },
      content: "Bukott diák vagyok én, nem bírom el a szenvedést.",
      image: "assets/placeholder-profile-picture.png",
      likes: 1,
      liked: true
    },
    {
      user: {
        username: "Zámbó Jimmy",
        picture: "assets/placeholder-profile-picture.png",
        followed: true
      },
      content: "Bukott diák vagyok én, nem bírom el a szenvedést.",
      image: "assets/placeholder-profile-picture.png",
      likes: 1,
      liked: true
    },
    {
      user: {
        username: "Zámbó Jimmy",
        picture: "assets/placeholder-profile-picture.png",
        followed: true
      },
      content: "Bukott diák vagyok én, nem bírom el a szenvedést.",
      image: "assets/placeholder-profile-picture.png",
      likes: 1,
      liked: true
    },
    {
      user: {
        username: "Zámbó Jimmy",
        picture: "assets/placeholder-profile-picture.png",
        followed: true
      },
      content: "Bukott diák vagyok én, nem bírom el a szenvedést.",
      image: "assets/placeholder-profile-picture.png",
      likes: 1,
      liked: true
    },
  );

  getFeed(length: Number, start: Number): Promise<Array<Post>> {
    return new Promise<Array<Post>>((resolve, reject) => {
      // TODO: fetch feed
      if (this.auth.checkAllowed()) {
        resolve(this.examplePosts)
      } else {
        reject()
      }
    });
  }

  getPosts(username: String, lenght: Number, start: Number) {
    return new Promise<Array<Post>>((resolve, reject) => {
      // TODO: fetch feed
      if (this.auth.checkAllowed()) {
        resolve(this.examplePosts)
      } else {
        reject()
      }
    });
  }

  newPost(content: String, image: String) {
    return new Promise<Boolean>((resolve, reject) => {
      // TODO: make post
      if (this.auth.checkAllowed()) {
        this.examplePosts.push({
          user: {
            username: "Zámbó Jimmy",
            picture: "assets/placeholder-profile-picture.png",
            followed: true
          },
          content: content,
          image: image,
          likes: 0,
          liked: false
        });
        resolve(true);
      } else {
        reject();
      }
    });
  }
}