<?php

namespace Api\Posts;

use Exception;
use Khofmann\Api\Api;
use Khofmann\ApiError\ApiError;
use Khofmann\Input\Input;
use Khofmann\Models\Post\Post;
use Khofmann\Models\User\User;
use Khofmann\Request\Request;
use Khofmann\Response\Response;

class Posts extends Api
{
  public function get()
  {
    // Fetch and constrain all parameters.
    $page = max(0, intval(Input::get("p", 0)));
    $limit = constrain(0, 30, intval(Input::get("l", 10)));
    $authed = Request::token() !== null;

    // Return list of posts.
    Response::json(Post::list($page, $limit, $authed));
  }

  public function post(): void
  {
    // Fetch all required inputs.
    // Throw 400 error if a required one is missing.
    $content = Input::post("content");
    if (empty($content)) throw ApiError::missingField(["content"]);

    // Get logged in user
    $self = User::getByToken(Request::token());

    // Try to create a new post for logged in user.
    try {
      Response::json(Post::create($self, $content));
    } catch (Exception $err) {
      switch ($err->getMessage()) {
        default:
          throw $err;
      }
    }
  }
}