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

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

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

if (!isset($_POST["id"], $_POST["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 = $_POST["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 = $_POST['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 acquired this emoteset.", 409);
    exit;
}

$db->prepare('INSERT INTO acquired_emote_sets(user_id, emote_set_id) VALUES (?, ?)')
    ->execute([$user_id, $emote_set_id]);

generate_alert("/emotesets/?id=$emote_set_id", "This emoteset has been acquired by $user_name.", 200);