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Simple WebDAV storage provider
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/440068/1018737/CKWebDavStorage.js
// ==UserScript==
// @name CKWebDavStorage
// @namespace ckylin-script-lib-webdav-storage
// @version 1.0
// @description Simple WebDAV storage provider
// @match http://*/*
// @match https://*/*
// @require https://cdn.jsdelivr.net/npm/webdav@4.8.0/dist/web/webdav.js
// @author CKylinMC
// @grant GM_getValue
// @grant GM_setValue
// @grant unsafeWindow
// @license GPLv3 License
// ==/UserScript==
(function () {
class CKWebDAVStorage {
static fromConfig(options = {}) {
const option = Object.assign({
url: null,
username: null,
password: null,
namespace: null,
syncOnChange: true,
pathByDots: true
}, options);
if (Object.values(option).includes(null)) {
return false;
}
return new CKWebDAVStorage(...Object.values(option));
}
constructor(url, username, password, namespace, syncOnChange = true, pathByDots = true) {
this.client = new window.WebDAV.createClient(url, {
username,
password
});
this.namespace = namespace || 'customdata' + Math.random().toString(36).substring(2, 15);
this.namespace = this.namespace.replace(/[^a-zA-Z0-9]/g, '');
console.warn("WEBDAV", "This caller not give a namespace, so use random string as namespace:", this.namespace);
this.doc = null;
this.syncOnChange = syncOnChange;
this.pathByDots = pathByDots;
}
setSyncOnChange(syncOnChange) {
this.syncOnChange = !!syncOnChange;
}
getSyncOnChange() {
return this.syncOnChange;
}
getNamespace() {
return this.namespace;
}
getFileName() {
return this.getNamespace() + '.json';
}
async exists() {
return await this.client.exists(this.getFileName());
}
async markmodified() {
this.doc.timestamp = (new Date()).getTime();
}
async download() {
try {
return JSON.parse(await this.client.getFileContents("/" + this.getFileName(), {
format: "text"
}));
} catch (e) {
return {};
}
}
async upload(doc) {
await this.client.putFileContents("/" + this.getFileName(), JSON.stringify(doc), {
overwrite: true
});
}
async sync() {
if (await this.exists()) {
if (this.doc.timestamp) {
let clouddoc = await this.download();
if (clouddoc.timestamp && this.clouddoc.timestamp > this.doc.timestamp) {
this.doc = clouddoc;
} else {
await this.upload(this.doc);
}
} else {
this.doc = await this.download();
}
} else {
if (this.doc) {
this.markmodified();
await this.upload(this.doc);
} else {
this.doc = {};
this.markmodified();
await this.upload(this.doc);
}
}
}
parseKey(key) {
const keys = key.split(".").filter(it => it != null && (typeof it != "undefined") && it.length > 0);
if (keys.length === 0) {
throw new Error("Invalid key: " + key);
}
return keys;
}
set(key, value = null) {
if (this.pathByDots && key.indexOf(".") > -1) {
let keys = this.parseKey(key);
let obj = this.doc;
let length = keys.length;
let i = 0;
for (; i < length - 1; i++) {
let k = keys[i];
if (!obj.hasOwnProperty(k)) {
obj[k] = {};
obj = obj[k];
} else {
obj = obj[k];
}
}
obj[keys[length - 1]] = value;
} else this.doc[key] = value;
this.markmodified();
this.autoSync();
}
get(key) {
if (this.pathByDots && key.indexOf(".") > -1) {
let keys = this.parseKey(key);
let obj = this.doc;
for (let key of keys) {
if (!obj.hasOwnProperty(key)) {
return false;
} else {
obj = obj[key];
}
}
return obj;
}
return this.doc[key];
}
remove(key) {
if (this.pathByDots && key.indexOf(".") > -1) {
let keys = this.parseKey(key);
let obj = this.doc;
let length = keys.length;
let i = 0;
for (; i < length - 1; i++) {
let k = keys[i];
if (!obj.hasOwnProperty(k)) {
obj[k] = {};
obj = obj[k];
} else {
obj = obj[k];
}
}
delete obj[keys[length - 1]];
} else delete this.doc[key];
this.markmodified();
this.autoSync();
}
exists(key) {
return typeof this.get(key) != "undefined";
}
clear() {
this.doc = {};
this.markmodified();
this.autoSync();
}
getAll() {
return this.doc();
}
setAll(obj) {
this.doc = {};
for (let keyname of Object.keys(obj)) {
if (obj.hasOwnProperty(keyname)) {
this.doc[keyname] = obj[keyname];
}
}
this.markmodified();
this.autoSync();
}
async autoSync() {
if (this.syncOnChange) {
await this.sync();
}
}
}
window.CKWebDAVStorage = CKWebDAVStorage;
if (typeof unsafeWindow != "undefined") unsafeWindow.CKWebDAVStorage = CKWebDAVStorage;
})();