<?php
include_once "{$_SERVER['DOCUMENT_ROOT']}/lib/config.php";
include_once "{$_SERVER['DOCUMENT_ROOT']}/lib/accounts.php";
include_once "{$_SERVER['DOCUMENT_ROOT']}/lib/alert.php";
include_once "{$_SERVER['DOCUMENT_ROOT']}/lib/utils.php";

if (!authorize_user(true)) {
    return;
}

$d = $_POST;
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    $d = $_GET;
}

if (isset($_SESSION["user_role"]) && !$_SESSION["user_role"]["permission_emoteset_own"]) {
    generate_alert("/404.php", "Not enough permissions", 403);
    exit;
}

if (!isset($d["id"], $d["username"])) {
    generate_alert("/emotesets/", "Not enough POST fields");
    exit;
}

$db = new PDO(CONFIG['database']['url'], CONFIG['database']['user'], CONFIG['database']['pass']);

// checking emoteset
$emote_set_id = $d["id"];
$stmt = $db->prepare("SELECT id FROM emote_sets WHERE id = ? AND owner_id = ?");
$stmt->execute([$emote_set_id, $_SESSION['user_id']]);
if ($stmt->rowCount() == 0) {
    generate_alert("/emotes", "Emoteset not found", 404);
    exit;
}
$emote_set = $stmt->fetch(PDO::FETCH_ASSOC);

// get user by username
$user_name = $d['username'];
$stmt = $db->prepare("SELECT id FROM users WHERE username = ?");
$stmt->execute([$user_name]);
if ($stmt->rowCount() == 0) {
    generate_alert("/404.php", "Username $user_name does not exist", 403);
    exit;
}
$user_id = $stmt->fetch(PDO::FETCH_ASSOC)['id'];

// checking if user has already acquired emote set
$stmt = $db->prepare("SELECT id FROM acquired_emote_sets WHERE user_id = ? AND emote_set_id = ?");
$stmt->execute([$user_id, $emote_set_id]);
if ($stmt->rowCount() == 0) {
    generate_alert("/404.php", "User $user_name has not acquired this emoteset.", 404);
    exit;
}

$db->prepare('DELETE FROM acquired_emote_sets WHERE user_id = ? AND emote_set_id = ?')
    ->execute([$user_id, $emote_set_id]);

generate_alert("/emotesets/?id=$emote_set_id", "User $user_name can not edit this emoteset anymore.", 200);