package com.mavlushechka.a1qa.utils;

import com.mavlushechka.a1qa.constants.Endpoint;
import com.mavlushechka.a1qa.models.Post;
import com.mavlushechka.a1qa.models.User;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class JSONPlaceholderAPIManager {

    private final static String postsSpec = Endpoint.POSTS.getSpec();
    private final static String usersSpec = Endpoint.USERS.getSpec();


    public static Post getPost(int id) throws IOException {
        return getObject(postsSpec + "/" + id, Post.class);
    }

    public static List<Post> getPosts() throws IOException {
        return getObjects(postsSpec, Post.class);
    }

    public static Post postPost(Post post) throws IOException {
        return postObject(postsSpec, post, Post.class);
    }

    public static User getUser(int id) throws IOException {
        return getObject(usersSpec + "/" + id, User.class);
    }

    public static List<User> getUsers() throws IOException {
        return getObjects(usersSpec, User.class);
    }

    public static User postUser(User user) throws IOException {
        return postObject(usersSpec, user, User.class);
    }

    private static <T> T getObject(String spec, Class<T> classOfObject) throws IOException {
        return JSONParser.convertToObject(URLConnectionManager.get(spec), classOfObject);
    }

    private static <T> List<T> getObjects(String spec, Class<T> classOfObject) throws IOException {
        Object[] objects = JSONParser.convertArray(URLConnectionManager.get(spec), classOfObject);
        ArrayList<T> objectsArrayList = new ArrayList<>();

        for (Object object : objects) {
            objectsArrayList.add((T) object);
        }
        return objectsArrayList.stream().toList();
    }

    private static <T> T postObject(String spec, T object, Class<T> classOfObject) throws IOException {
        return JSONParser.convertToObject(URLConnectionManager.post(spec, JSONParser.convertToJSON(object)), classOfObject);
    }

}