<?php
require_once($_SERVER['DOCUMENT_ROOT'] . "/config.php");

if (!class_exists('SelectelApi')) {
    $p1 = $_SERVER['DOCUMENT_ROOT'] . "/SelectelApi.php";
    $p2 = $_SERVER['DOCUMENT_ROOT'] . "/classes/SelectelApi.php";
    $p3 = $_SERVER['DOCUMENT_ROOT'] . "/lib/SelectelApi.php";
    if (file_exists($p1)) require_once($p1);
    else if (file_exists($p2)) require_once($p2);
    else if (file_exists($p3)) require_once($p3);
}

header('Content-Type: application/json; charset=utf-8');

function ps_json($arr) {
    echo json_encode($arr);
    exit;
}

function ps_need_auth() {
    if (empty($_SESSION['agency_id']) || empty($_SESSION['id'])) {
        ps_json(array('ok' => false, 'error' => 'Нет доступа'));
    }
}

function ps_es($s) {
    return mysql_real_escape_string($s);
}

function ps_post_str($key, $def) {
    if (isset($_POST[$key])) return (string)$_POST[$key];
    return (string)$def;
}

function ps_post_int($key) {
    if (isset($_POST[$key])) return (int)$_POST[$key];
    return 0;
}

function ps_safe_ext($name) {
    $name = (string)$name;
    $pos = strrpos($name, '.');
    if ($pos === false) return '';
    $ext = substr($name, $pos + 1);
    $ext = preg_replace('/[^a-zA-Z0-9]+/', '', $ext);
    $ext = strtolower($ext);
    if (strlen($ext) > 12) $ext = substr($ext, 0, 12);
    return $ext;
}
function ps_max_file_size_bytes() {
    return 20 * 1024 * 1024;
}

function ps_allowed_ext_map() {
    return array(
        'pdf'  => array('application/pdf'),
        'doc'  => array('application/msword', 'application/octet-stream'),
        'docx' => array(
            'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
            'application/zip',
            'application/octet-stream'
        ),
        'rtf'  => array('application/rtf', 'text/rtf', 'application/octet-stream'),
        'txt'  => array('text/plain', 'application/octet-stream'),
        'xls'  => array('application/vnd.ms-excel', 'application/octet-stream'),
        'xlsx' => array(
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            'application/zip',
            'application/octet-stream'
        ),
        'csv'  => array('text/csv', 'text/plain', 'application/vnd.ms-excel', 'application/octet-stream'),
        'jpg'  => array('image/jpeg'),
        'jpeg' => array('image/jpeg'),
        'png'  => array('image/png'),
        'webp' => array('image/webp'),
    );
}

function ps_denied_ext_list() {
    return array(
        'exe','bat','cmd','com','msi','sh',
        'js','mjs','cjs',
        'php','php3','php4','php5','phtml','phar',
        'xlsm','docm','pptm',
        'zip','rar','7z','tar','gz'
    );
}

function ps_detect_mime($tmpPath) {
    $mime = '';
    if (function_exists('finfo_open')) {
        $fi = @finfo_open(FILEINFO_MIME_TYPE);
        if ($fi) {
            $m = @finfo_file($fi, $tmpPath);
            if (is_string($m)) $mime = $m;
            @finfo_close($fi);
        }
    }
    if ($mime === '' && function_exists('mime_content_type')) {
        $m = @mime_content_type($tmpPath);
        if (is_string($m)) $mime = $m;
    }
    return strtolower(trim((string)$mime));
}

function ps_read_magic($tmpPath, $len) {
    $fh = @fopen($tmpPath, 'rb');
    if (!$fh) return '';
    $bin = @fread($fh, (int)$len);
    @fclose($fh);
    if (!is_string($bin)) return '';
    return $bin;
}

function ps_is_zip_like($tmpPath) {
    $head = ps_read_magic($tmpPath, 4);
    return (substr($head, 0, 2) === "PK");
}

function ps_magic_ok_by_ext($ext, $tmpPath) {
    $ext = strtolower((string)$ext);

    if ($ext === 'pdf') {
        $h = ps_read_magic($tmpPath, 5);
        return (substr($h, 0, 4) === '%PDF');
    }

    if ($ext === 'jpg' || $ext === 'jpeg') {
        $h = ps_read_magic($tmpPath, 3);
        return ($h === "\xFF\xD8\xFF");
    }

    if ($ext === 'png') {
        $h = ps_read_magic($tmpPath, 8);
        return ($h === "\x89PNG\x0D\x0A\x1A\x0A");
    }

    if ($ext === 'webp') {
        $h = ps_read_magic($tmpPath, 12);
        return (substr($h, 0, 4) === 'RIFF' && substr($h, 8, 4) === 'WEBP');
    }

    if ($ext === 'docx' || $ext === 'xlsx') {
        return ps_is_zip_like($tmpPath);
    }

    return true;
}

function ps_is_allowed_file($origName, $tmpPath, &$errorCode, &$detectedMime) {
    $errorCode = '';
    $detectedMime = '';

    $ext = ps_safe_ext($origName);
    if ($ext === '') {
        $errorCode = 'bad_ext';
        return false;
    }

    $denied = ps_denied_ext_list();
    if (in_array($ext, $denied, true)) {
        $errorCode = 'bad_ext';
        return false;
    }

    $allowedMap = ps_allowed_ext_map();
    if (!isset($allowedMap[$ext])) {
        $errorCode = 'bad_ext';
        return false;
    }

    $detectedMime = ps_detect_mime($tmpPath);

    if (!ps_magic_ok_by_ext($ext, $tmpPath)) {
        $errorCode = 'bad_mime';
        return false;
    }

    $okMime = false;
    $allowMimes = $allowedMap[$ext];
    $i = 0;
    while ($i < count($allowMimes)) {
        if ($detectedMime === strtolower($allowMimes[$i])) {
            $okMime = true;
            break;
        }
        $i++;
    }

    if (!$okMime && $detectedMime !== '') {
        $errorCode = 'bad_mime';
        return false;
    }

    return true;
}

function ps_random_file_name($ext) {
    $ext = ps_safe_ext($ext);
    if ($ext === '') $ext = 'bin';

    try {
        if (function_exists('random_bytes')) {
            $b = random_bytes(16);
            $hex = bin2hex($b); 
        } else {
            $hex = md5(uniqid('', true) . mt_rand());
        }
    } catch (Exception $e) {
        $hex = md5(uniqid('', true) . mt_rand());
    }

    // 8-4-4-4-12
    $name = substr($hex, 0, 8) . '-' .
            substr($hex, 8, 4) . '-' .
            substr($hex, 12, 4) . '-' .
            substr($hex, 16, 4) . '-' .
            substr($hex, 20, 12);

    return $name . '.' . $ext;
}

function ps_err_text_by_code($code, $ext) {
    if ($code === 'too_big') return 'Файл слишком большой. Максимум 20 МБ';
    if ($code === 'bad_ext') return 'Формат .' . $ext . ' не поддерживается';
    if ($code === 'bad_mime') return 'Формат .' . $ext . ' не поддерживается';
    return 'Ошибка загрузки файла';
}
function ps_public_root() {
    return 'https://data.joywork.ru';
}

function ps_storage_prefix() {
    return 'partner/partner-materials';
}

function ps_public_prefix_url() {
    return ps_public_root() . '/' . ps_storage_prefix();
}

function ps_mime_by_ext($ext) {
    $ext = strtolower((string)$ext);

    if ($ext === 'pdf') return 'application/pdf';
    if ($ext === 'doc') return 'application/msword';
    if ($ext === 'docx') return 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
    if ($ext === 'rtf') return 'application/rtf';
    if ($ext === 'txt') return 'text/plain';
    if ($ext === 'xls') return 'application/vnd.ms-excel';
    if ($ext === 'xlsx') return 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
    if ($ext === 'csv') return 'text/csv';
    if ($ext === 'jpg' || $ext === 'jpeg') return 'image/jpeg';
    if ($ext === 'png') return 'image/png';
    if ($ext === 'webp') return 'image/webp';

    return 'application/octet-stream';
}

function ps_files_table() {
    return 'partner_material_documents';
}

function ps_selectel_auth() {
    static $cached = null;
    if ($cached !== null) return $cached;

    if (!empty($_SESSION['selectel_token']) && !empty($_SESSION['selectel_storage_url']) && !empty($_SESSION['selectel_token_till'])) {
        if ((int)$_SESSION['selectel_token_till'] > time() + 60) {
            $cached = array((string)$_SESSION['selectel_token'], (string)$_SESSION['selectel_storage_url']);
            return $cached;
        }
    }

    if (!class_exists('SelectelApi')) {
        $cached = array('', '');
        return $cached;
    }

    if (!method_exists('SelectelApi', 'getTokenAndUrl')) {
        $cached = array('', '');
        return $cached;
    }

    $r = SelectelApi::getTokenAndUrl();

    $token = (string)($r[0]);
    $storageUrl = (string)($r[1]);
    if ($token === '' || $storageUrl === '') {
        $cached = array('', '');
        return $cached;
    }

    $_SESSION['selectel_token'] = $token;
    $_SESSION['selectel_storage_url'] = $storageUrl;
    $_SESSION['selectel_token_till'] = time() + 3600;

    $cached = array($token, $storageUrl);
    return $cached;
}

function ps_selectel_jwdata_base($storageUrl) {
    $storageUrl = rtrim((string)$storageUrl, '/');
    return $storageUrl . '/jwdata/';
}

function ps_selectel_object_from_any($value) {
    $s = trim((string)$value);
    if ($s === '') return '';

    if (strpos($s, 'http://') === 0 || strpos($s, 'https://') === 0) {
        $path = parse_url($s, PHP_URL_PATH);
        $s = (string)$path;
    }

    $s = ltrim($s, '/');

    $prefix = rtrim(ps_storage_prefix(), '/') . '/';
    if (strpos($s, $prefix) === 0) return $s;

    if (preg_match('~^\d+/\d+/~', $s)) {
        return $prefix . $s;
    }

    return $prefix . $s;
}

function ps_selectel_upload_raw($baseUrl, $token, $tmpPath, $objectName, $contentType) {
    $fh = @fopen($tmpPath, 'rb');
    if (!$fh) return false;

    $size = @filesize($tmpPath);
    if ($size === false) $size = 0;

    $url = rtrim((string)$baseUrl, '/') . '/' . ltrim((string)$objectName, '/');

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
    curl_setopt($ch, CURLOPT_UPLOAD, 1);
    curl_setopt($ch, CURLOPT_INFILE, $fh);
    if ($size > 0) curl_setopt($ch, CURLOPT_INFILESIZE, $size);

    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
    curl_setopt($ch, CURLOPT_TIMEOUT, 180);
    curl_setopt($ch, CURLOPT_LOW_SPEED_LIMIT, 1024);
    curl_setopt($ch, CURLOPT_LOW_SPEED_TIME, 20);

    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        "X-Auth-Token: $token",
        "Content-Type: $contentType",
        "Expect:"
    ));

    curl_exec($ch);
    $code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
    $err = (int)curl_errno($ch);

    curl_close($ch);
    fclose($fh);

    if ($err) return false;
    return ($code === 201);
}

function ps_selectel_delete_raw($baseUrl, $token, $objectName) {
    $url = rtrim((string)$baseUrl, '/') . '/' . ltrim((string)$objectName, '/');

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');

    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
    curl_setopt($ch, CURLOPT_TIMEOUT, 60);
    curl_setopt($ch, CURLOPT_LOW_SPEED_LIMIT, 1024);
    curl_setopt($ch, CURLOPT_LOW_SPEED_TIME, 20);

    curl_setopt($ch, CURLOPT_HTTPHEADER, array("X-Auth-Token: $token"));

    curl_exec($ch);
    $code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
    $err = (int)curl_errno($ch);

    curl_close($ch);

    if ($err) return false;
    if ($code === 204) return true;
    if ($code === 404) return true;
    return false;
}

function ps_selectel_head_raw($baseUrl, $token, $objectName) {
    $url = rtrim((string)$baseUrl, '/') . '/' . ltrim((string)$objectName, '/');

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_NOBODY, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'HEAD');

    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);

    curl_setopt($ch, CURLOPT_HTTPHEADER, array("X-Auth-Token: $token"));

    curl_exec($ch);
    $code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
    $err = (int)curl_errno($ch);

    curl_close($ch);

    if ($err) return 0;
    return $code;
}

function ps_selectel_upload_object($tmpPath, $objectName, $contentType) {
    $r = ps_selectel_auth();
    $token = (string)$r[0];
    $storageUrl = (string)$r[1];
    if ($token === '' || $storageUrl === '') return false;

    $base = ps_selectel_jwdata_base($storageUrl);
    return ps_selectel_upload_raw($base, $token, $tmpPath, $objectName, $contentType);
}

function ps_selectel_delete_any($value) {
    $r = ps_selectel_auth();
    $token = (string)$r[0];
    $storageUrl = (string)$r[1];
    if ($token === '' || $storageUrl === '') return false;

    $obj = ps_selectel_object_from_any($value);
    if ($obj === '') return false;

    $base = ps_selectel_jwdata_base($storageUrl);
    return ps_selectel_delete_raw($base, $token, $obj);
}

function ps_selectel_head_object($objectName) {
    $r = ps_selectel_auth();
    $token = (string)$r[0];
    $storageUrl = (string)$r[1];
    if ($token === '' || $storageUrl === '') return 0;

    $base = ps_selectel_jwdata_base($storageUrl);
    return ps_selectel_head_raw($base, $token, $objectName);
}

ps_need_auth();

$agencyId = (int)$_SESSION['agency_id'];
$userId = (int)$_SESSION['id'];

$action = ps_post_str('action', '');
if ($action === '' && isset($_GET['action'])) $action = (string)$_GET['action'];

$filesTable = ps_files_table();

if ($action === 'url_save') {
    $partners = new Partners();

    $val = trim(ps_post_str('partner_url', ''));
    $ok = $partners->savePartnerUrl($val);

    if (!$ok) {
        $err = 'Ошибка';
        if (!empty($partners->errors)) $err = implode('<br>', $partners->errors);
        ps_json(array('ok' => false, 'error' => $err));
    }

    $slug = $partners->getPartnerUrl($userId);
    $full = $partners->getPartnerCabinetUrl($_SESSION['agency_id'], $_SESSION['id']);

    ps_json(array('ok' => true, 'partner_url' => $slug, 'full_url' => $full));
}

if ($action === 'materials_list') {
    $cats = array();

    $res = mysql_query("SELECT id, title FROM partner_material_categories WHERE agency_id={$agencyId} ORDER BY id ASC");
    if ($res) {
        while ($r = mysql_fetch_assoc($res)) {
            $id = (int)$r['id'];
            $cats[$id] = array('id' => $id, 'title' => (string)$r['title'], 'files' => array());
        }
    }

    if (!empty($cats)) {
        $ids = implode(',', array_keys($cats));

        $res2 = mysql_query("SELECT id, category_id, file_path, file_name, file_size FROM {$filesTable} WHERE agency_id={$agencyId} AND category_id IN ({$ids}) AND doc_type='file' ORDER BY id ASC");
        if ($res2) {
            while ($f = mysql_fetch_assoc($res2)) {
                $cid = (int)$f['category_id'];
                if (!isset($cats[$cid])) continue;

                $path = (string)$f['file_path'];
                $url = '';

                if ($path !== '') {
                    if (strpos($path, 'http://') === 0 || strpos($path, 'https://') === 0) {
                        $url = $path;
                    } else {
                        $url = ps_public_prefix_url() . '/' . ltrim($path, '/');
                    }
                }

                $cats[$cid]['files'][] = array(
                    'id' => (int)$f['id'],
                    'category_id' => $cid,
                    'file_name' => (string)$f['file_name'],
                    'file_size' => (int)$f['file_size'],
                    'file_url' => $url,
                    'file_path' => $path
                );
            }
        }
    }

    ps_json(array('ok' => true, 'categories' => array_values($cats)));
}

if ($action === 'materials_category_create') {
    $title = trim(ps_post_str('title', ''));
    if ($title === '') ps_json(array('ok' => false, 'error' => 'Введите название'));

    $t = ps_es($title);
    $ok = mysql_query("INSERT INTO partner_material_categories (agency_id, title) VALUES ({$agencyId}, '{$t}')");
    if (!$ok) ps_json(array('ok' => false, 'error' => 'Ошибка создания категории'));

    ps_json(array('ok' => true, 'id' => (int)mysql_insert_id(), 'title' => $title));
}

if ($action === 'materials_category_rename') {
    $categoryId = ps_post_int('category_id');
    $title = trim(ps_post_str('title', ''));

    if ($categoryId <= 0) ps_json(array('ok' => false, 'error' => 'Категория не выбрана'));
    if ($title === '') ps_json(array('ok' => false, 'error' => 'Введите название'));

    $t = ps_es($title);
    $ok = mysql_query("UPDATE partner_material_categories SET title='{$t}' WHERE agency_id={$agencyId} AND id={$categoryId} LIMIT 1");
    if (!$ok) ps_json(array('ok' => false, 'error' => 'Ошибка переименования'));

    ps_json(array('ok' => true));
}

if ($action === 'materials_category_delete') {
    $categoryId = ps_post_int('category_id');
    if ($categoryId <= 0) ps_json(array('ok' => false, 'error' => 'Категория не выбрана'));

    $res = mysql_query("SELECT file_path FROM {$filesTable} WHERE agency_id={$agencyId} AND category_id={$categoryId} AND doc_type='file'");
    if ($res) {
        while ($r = mysql_fetch_assoc($res)) {
            $p = (string)$r['file_path'];
            if ($p !== '') ps_selectel_delete_any($p);
        }
    }

    mysql_query("DELETE FROM {$filesTable} WHERE agency_id={$agencyId} AND category_id={$categoryId} AND doc_type='file'");

    $ok = mysql_query("DELETE FROM partner_material_categories WHERE agency_id={$agencyId} AND id={$categoryId} LIMIT 1");
    if (!$ok) ps_json(array('ok' => false, 'error' => 'Ошибка удаления категории'));

    ps_json(array('ok' => true));
}

if ($action === 'materials_files_upload') {
    $categoryId = ps_post_int('category_id');
    if ($categoryId <= 0) ps_json(array('ok' => false, 'error' => 'Категория не выбрана'));

    $chk = mysql_query("SELECT id FROM partner_material_categories WHERE agency_id={$agencyId} AND id={$categoryId} LIMIT 1");
    if (!$chk || !mysql_num_rows($chk)) ps_json(array('ok' => false, 'error' => 'Категория не найдена'));

    if (!isset($_FILES['files'])) ps_json(array('ok' => false, 'error' => 'Файлы не переданы'));

    $names = $_FILES['files']['name'];
    $tmp   = $_FILES['files']['tmp_name'];
    $size  = $_FILES['files']['size'];
    $err   = $_FILES['files']['error'];

    if (!is_array($names)) {
        $names = array($names);
        $tmp   = array($tmp);
        $size  = array($size);
        $err   = array($err);
    }

    $count = count($names);
    if ($count <= 0) ps_json(array('ok' => false, 'error' => 'Файлы не выбраны'));

    $r = ps_selectel_auth();
    if ((string)$r[0] === '' || (string)$r[1] === '') {
        ps_json(array('ok' => false, 'error' => 'Selectel token/url пустые'));
    }

    $created = array();
    $errorsOut = array();

    $i = 0;
    while ($i < $count) {
        $e = (int)$err[$i];
        $origName = isset($names[$i]) ? (string)$names[$i] : '';
        $tmpName  = isset($tmp[$i]) ? (string)$tmp[$i] : '';
        $fsize    = isset($size[$i]) ? (int)$size[$i] : 0;

        if ($e !== 0 || $tmpName === '' || !is_uploaded_file($tmpName)) {
            $errorsOut[] = array(
                'file_name' => $origName,
                'message' => 'Ошибка загрузки файла'
            );
            $i++;
            continue;
        }

        $ext = ps_safe_ext($origName);
        if ($ext === '') $ext = 'unknown';

        if ($fsize <= 0 || $fsize > ps_max_file_size_bytes()) {
            $errorsOut[] = array(
                'file_name' => $origName,
                'message' => ps_err_text_by_code('too_big', $ext)
            );
            $i++;
            continue;
        }

        $detectedMime = '';
        $errCode = '';
        if (!ps_is_allowed_file($origName, $tmpName, $errCode, $detectedMime)) {
            $errorsOut[] = array(
                'file_name' => $origName,
                'message' => ps_err_text_by_code($errCode, $ext)
            );
            $i++;
            continue;
        }

        $storedFileName = ps_random_file_name($ext);

        $objectName = rtrim(ps_storage_prefix(), '/') . '/' . $agencyId . '/' . $categoryId . '/' . $storedFileName;
        $publicUrl = ps_public_root() . '/' . ltrim($objectName, '/');

        $contentType = ps_mime_by_ext($ext);

        $uploaded = ps_selectel_upload_object($tmpName, $objectName, $contentType);
        if (!$uploaded) {
            $errorsOut[] = array(
                'file_name' => $origName,
                'message' => 'Ошибка загрузки файла'
            );
            $i++;
            continue;
        }

        $swiftCode = ps_selectel_head_object($objectName);
        if ($swiftCode !== 200) {
            ps_selectel_delete_any($objectName);
            $errorsOut[] = array(
                'file_name' => $origName,
                'message' => 'Ошибка загрузки файла'
            );
            $i++;
            continue;
        }

        $dbMime = ($detectedMime !== '') ? $detectedMime : $contentType;

        $fp  = ps_es($publicUrl);
        $on  = ps_es($origName);   
        $mm  = ps_es($dbMime);
        $ttl = ps_es($origName);

        $sql = "INSERT INTO {$filesTable} (agency_id, category_id, title, doc_type, file_path, file_name, file_mime, file_size, link_url, text_content)
                VALUES ({$agencyId}, {$categoryId}, '{$ttl}', 'file', '{$fp}', '{$on}', '{$mm}', {$fsize}, '', NULL)";

        $ok = mysql_query($sql);

        if ($ok) {
            $id = (int)mysql_insert_id();
            $created[] = array(
                'id' => $id,
                'file_name' => $origName,
                'file_size' => $fsize,
                'file_url' => $publicUrl,
                'file_path' => $publicUrl
            );
        } else {
            ps_selectel_delete_any($objectName);
            $errorsOut[] = array(
                'file_name' => $origName,
                'message' => 'Ошибка сохранения в базе'
            );
        }

        $i++;
    }

    ps_json(array(
        'ok' => true,
        'created' => $created,
        'errors' => $errorsOut
    ));
}

if ($action === 'materials_file_delete') {
    $fileId = ps_post_int('file_id');
    if ($fileId <= 0) ps_json(array('ok' => false, 'error' => 'Файл не выбран'));

    $p = '';
    $res = mysql_query("SELECT file_path FROM {$filesTable} WHERE agency_id={$agencyId} AND id={$fileId} AND doc_type='file' LIMIT 1");
    if ($res && mysql_num_rows($res)) {
        $r = mysql_fetch_assoc($res);
        $p = (string)$r['file_path'];
    }

    $ok = mysql_query("DELETE FROM {$filesTable} WHERE agency_id={$agencyId} AND id={$fileId} AND doc_type='file' LIMIT 1");
    if (!$ok) ps_json(array('ok' => false, 'error' => 'Ошибка удаления'));

    if ($p !== '') ps_selectel_delete_any($p);

    ps_json(array('ok' => true));
}

if ($action === 'news_list') {
    $newsItems = array();

    $sql = "SELECT id, title, body_html, is_important, created_at
            FROM partner_news
            WHERE agency_id={$agencyId}
            ORDER BY is_important DESC, id DESC";

    $res = mysql_query($sql);
    if (!$res) ps_json(array('ok' => false, 'error' => 'SQL ошибка: ' . mysql_error()));

    while ($row = mysql_fetch_assoc($res)) {
        $newsItems[] = array(
            'id' => (int)$row['id'],
            'title' => (string)$row['title'],
            'body_html' => (string)$row['body_html'],
            'is_important' => (int)$row['is_important'],
            'created_at' => (string)$row['created_at']
        );
    }

    ps_json(array('ok' => true, 'items' => $newsItems));
}

if ($action === 'news_create') {
    $newsTitle = trim(ps_post_str('title', ''));
    $newsBodyHtml = (string)ps_post_str('body_html', '');
    $isImportant = ps_post_int('is_important') ? 1 : 0;

    if ($newsTitle === '') ps_json(array('ok' => false, 'error' => 'Введите заголовок'));

    $newsBodyHtml = str_replace("\0", '', $newsBodyHtml);

    $newsTitleSql = ps_es($newsTitle);
    $newsBodySql  = ps_es($newsBodyHtml);

    $insertSql = "INSERT INTO partner_news (`agency_id`, `title`, `body_html`, `is_important`, `created_at`, `updated_at`)
                  VALUES ({$agencyId}, '{$newsTitleSql}', '{$newsBodySql}', {$isImportant}, NOW(), NOW())";

    $insertOk = mysql_query($insertSql);
    if (!$insertOk) ps_json(array('ok' => false, 'error' => 'Ошибка создания новости: ' . mysql_error()));

    ps_json(array('ok' => true, 'id' => (int)mysql_insert_id()));
}
if ($action === 'news_update') {
    $newsId = ps_post_int('news_id');
    $newsTitle = trim(ps_post_str('title', ''));
    $newsBodyHtml = (string)ps_post_str('body_html', '');
    $isImportant = ps_post_int('is_important') ? 1 : 0;

    if ($newsId <= 0) ps_json(array('ok' => false, 'error' => 'Некорректный ID новости'));
    if ($newsTitle === '') ps_json(array('ok' => false, 'error' => 'Введите заголовок'));

    $newsBodyHtml = str_replace("\0", '', $newsBodyHtml);

    $newsTitleSql = ps_es($newsTitle);
    $newsBodySql  = ps_es($newsBodyHtml);

    $updateSql = "UPDATE partner_news
                  SET `title` = '{$newsTitleSql}',
                      `body_html` = '{$newsBodySql}',
                      `is_important` = {$isImportant},
                      `updated_at` = NOW()
                  WHERE `id` = {$newsId} AND `agency_id` = {$agencyId}
                  LIMIT 1";

    $updateOk = mysql_query($updateSql);
    if (!$updateOk) ps_json(array('ok' => false, 'error' => 'Ошибка обновления новости: ' . mysql_error()));

    if (function_exists('mysql_affected_rows') && mysql_affected_rows() < 0) {
        ps_json(array('ok' => false, 'error' => 'Не удалось обновить новость'));
    }

    ps_json(array('ok' => true, 'id' => (int)$newsId));
}
if ($action === 'news_delete') {
    $newsId = ps_post_int('news_id');
    if ($newsId <= 0) ps_json(array('ok' => false, 'error' => 'Новость не выбрана'));

    $ok = mysql_query("DELETE FROM partner_news WHERE agency_id={$agencyId} AND id={$newsId} LIMIT 1");
    if (!$ok) ps_json(array('ok' => false, 'error' => 'Ошибка удаления новости: ' . mysql_error()));

    ps_json(array('ok' => true));
}

if ($action === 'ckeditor_exportpdf_token') {
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(array('token' => ''));
    exit;
}
if ($action === 'materials_file_download') {
    $fileId = 0;
    if (isset($_GET['file_id'])) $fileId = (int)$_GET['file_id'];
    if ($fileId <= 0) {
        header('HTTP/1.1 400 Bad Request');
        echo 'file_id missing';
        exit;
    }

    $res = mysql_query("SELECT file_path, file_name, file_mime, file_size FROM {$filesTable} WHERE agency_id={$agencyId} AND id={$fileId} AND doc_type='file' LIMIT 1");
    if (!$res || !mysql_num_rows($res)) {
        header('HTTP/1.1 404 Not Found');
        echo 'not found';
        exit;
    }

    $r = mysql_fetch_assoc($res);

    $url = (string)($r['file_path']);
    if ($url !== '' && strpos($url, 'http://') !== 0 && strpos($url, 'https://') !== 0) {
        $url = ps_public_prefix_url() . '/' . ltrim($url, '/');
    }
    if ($url === '') {
        header('HTTP/1.1 404 Not Found');
        echo 'empty path';
        exit;
    }

    $fname = (string)($r['file_name']);
    if ($fname === '') $fname = 'file';
    $fname = preg_replace('/[\r\n]+/', ' ', $fname);
    $fname = str_replace(array('"', '\\'), array("'", ''), $fname);

    $mime = (string)($r['file_mime']);
    if ($mime === '') $mime = 'application/octet-stream';

    $size = (int)($r['file_size'] );

    header('Content-Type: ' . $mime);
    header('Content-Disposition: attachment; filename="' . $fname . '"');
    header('X-Content-Type-Options: nosniff');
    header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
    header('Pragma: no-cache');
    if ($size > 0) header('Content-Length: ' . $size);

    $out = fopen('php://output', 'wb');
    if (!$out) {
        header('HTTP/1.1 500 Internal Server Error');
        echo 'output error';
        exit;
    }

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
    curl_setopt($ch, CURLOPT_FILE, $out);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
    curl_setopt($ch, CURLOPT_TIMEOUT, 0);

    curl_exec($ch);
    curl_close($ch);
    fclose($out);
    exit;
}

ps_json(array('ok' => false, 'error' => 'Неизвестное действие'));