321 lines
11 KiB
JavaScript
321 lines
11 KiB
JavaScript
import Gio from 'gi://Gio';
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import GLib from 'gi://GLib';
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// Ablage: ~/.local/share/desktop-app/
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// events.json Termine
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// todos.json Todos
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// notes/ Notizen als .md-Dateien, Ordner beliebig verschachtelt
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// deleted-notes.json gelöschte Notizen mit Zeitpunkt, damit der Sync sie auch woanders löscht
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// sync.json Server-Zugang (url, token), siehe sync.js
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// Gelöschte Termine und Todos bleiben mit deleted: true in der Liste (Tombstone) und werden nur ausgeblendet.
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const decoder = new TextDecoder();
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export function readJson(path, fallback = []) {
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try {
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const [ok, bytes] = GLib.file_get_contents(path);
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return ok ? JSON.parse(decoder.decode(bytes)) : fallback;
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} catch {
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// Datei gibt es beim ersten Start noch nicht
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return fallback;
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}
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}
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export function writeJson(path, data) {
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GLib.file_set_contents(path, JSON.stringify(data, null, 2));
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}
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// Änderungszeit einer Datei als ISO-String mit Millisekunden.
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function modifiedIso(file) {
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const info = file.query_info('time::modified,time::modified-usec', Gio.FileQueryInfoFlags.NONE, null);
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const usec = info.get_attribute_uint32('time::modified-usec');
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return new Date(Number(info.get_attribute_uint64('time::modified')) * 1000 + Math.floor(usec / 1000)).toISOString();
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}
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function setModified(file, iso) {
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const ms = new Date(iso).getTime();
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const info = new Gio.FileInfo();
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info.set_attribute_uint64('time::modified', Math.floor(ms / 1000));
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info.set_attribute_uint32('time::modified-usec', (ms % 1000) * 1000);
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file.set_attributes_from_info(info, Gio.FileQueryInfoFlags.NONE, null);
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}
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function compareArrays(a, b) {
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for (let i = 0; i < a.length; i++) {
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if (a[i] < b[i])
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return -1;
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if (a[i] > b[i])
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return 1;
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}
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return 0;
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}
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function listFolder(path) {
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const node = {name: GLib.path_get_basename(path), path, folders: [], notes: []};
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const dir = Gio.File.new_for_path(path);
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const children = dir.enumerate_children('standard::name,standard::type', Gio.FileQueryInfoFlags.NONE, null);
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let info;
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while ((info = children.next_file(null))) {
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const name = info.get_name();
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if (name.startsWith('.'))
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continue;
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const child = GLib.build_filenamev([path, name]);
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if (info.get_file_type() === Gio.FileType.DIRECTORY)
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node.folders.push(listFolder(child));
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else if (name.endsWith('.md'))
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node.notes.push({name: name.slice(0, -3), path: child});
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}
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children.close(null);
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node.folders.sort((a, b) => a.name.localeCompare(b.name));
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node.notes.sort((a, b) => a.name.localeCompare(b.name));
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return node;
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}
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function checkName(name) {
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if (!name)
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throw new Error('Name fehlt');
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if (name.includes('/') || name.startsWith('.'))
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throw new Error('Name darf kein "/" enthalten und nicht mit "." beginnen');
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}
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export class Store {
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constructor() {
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this.dir = GLib.build_filenamev([GLib.get_user_data_dir(), 'desktop-app']);
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this.notesDir = GLib.build_filenamev([this.dir, 'notes']);
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GLib.mkdir_with_parents(this.notesDir, 0o755);
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this._eventsPath = GLib.build_filenamev([this.dir, 'events.json']);
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this._todosPath = GLib.build_filenamev([this.dir, 'todos.json']);
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this._deletedNotesPath = GLib.build_filenamev([this.dir, 'deleted-notes.json']);
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this.events = readJson(this._eventsPath);
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this.todos = readJson(this._todosPath);
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this.deletedNotes = readJson(this._deletedNotesPath, {});
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this._listeners = [];
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// Notiz, die gerade im Editor offen ist. Der Sync fasst sie nicht an.
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this.lockedNote = null;
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}
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onChange(callback) {
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this._listeners.push(callback);
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}
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_changed() {
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for (const callback of this._listeners)
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callback();
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}
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// ---- Termine ----
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// Termine, die den Tag berühren. Mehrtägige laufen von date bis endDate.
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eventsOn(date) {
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return this.events
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.filter(e => !e.deleted && e.date <= date && date <= (e.endDate ?? e.date))
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.sort((a, b) => compareArrays([a.start ?? '', a.title], [b.start ?? '', b.title]));
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}
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saveEvent(event) {
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const now = new Date().toISOString();
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if (!event.id) {
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this.events.push({...event, id: GLib.uuid_string_random(), created: now, updated: now});
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} else {
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const index = this.events.findIndex(e => e.id === event.id);
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this.events[index] = {...event, updated: now};
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}
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writeJson(this._eventsPath, this.events);
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this._changed();
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}
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removeEvent(id) {
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const event = this.events.find(e => e.id === id);
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this.saveEvent({...event, deleted: true});
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}
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// ---- Sync: Änderungen von außen übernehmen, neuester Stand gewinnt ----
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// Gibt true zurück, wenn sich lokal etwas geändert hat.
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applyRemote(collection, items) {
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const list = this[collection];
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let changed = false;
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for (const item of items) {
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const index = list.findIndex(e => e.id === item.id);
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if (index >= 0 && list[index].updated >= item.updated)
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continue;
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if (index >= 0)
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list[index] = item;
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else
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list.push(item);
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changed = true;
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}
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if (changed) {
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writeJson(collection === 'events' ? this._eventsPath : this._todosPath, list);
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this._changed();
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}
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return changed;
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}
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// ---- Todos ----
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todosOn(date) {
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return this.todos
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.filter(t => !t.deleted && t.date === date)
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.sort((a, b) => compareArrays([a.time ?? '', a.title], [b.time ?? '', b.title]));
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}
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// Offene zuerst (terminierte nach Datum, dann allgemeine), erledigte zuletzt.
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sortedTodos() {
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const key = t => [t.done ? 1 : 0, t.date ? 0 : 1, t.date ?? '', t.time ?? '', t.created ?? ''];
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return this.todos.filter(t => !t.deleted).sort((a, b) => compareArrays(key(a), key(b)));
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}
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saveTodo(todo) {
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const now = new Date().toISOString();
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if (!todo.id) {
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this.todos.push({...todo, done: false, id: GLib.uuid_string_random(), created: now, updated: now});
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} else {
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const index = this.todos.findIndex(t => t.id === todo.id);
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this.todos[index] = {...todo, updated: now};
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}
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writeJson(this._todosPath, this.todos);
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this._changed();
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}
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toggleTodo(id) {
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const todo = this.todos.find(t => t.id === id);
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this.saveTodo({...todo, done: !todo.done});
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}
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removeTodo(id) {
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const todo = this.todos.find(t => t.id === id);
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this.saveTodo({...todo, deleted: true});
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}
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// ---- Notizen ----
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tree() {
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return listFolder(this.notesDir);
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}
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// Pfad relativ zum Notizordner, dient dem Sync als id.
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relative(path) {
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return path.slice(this.notesDir.length + 1);
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}
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absolute(relative) {
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return GLib.build_filenamev([this.notesDir, relative]);
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}
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// Alle Notizen mit Änderungszeit, für den Sync.
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listNotes() {
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const out = [];
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const walk = folder => {
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folder.folders.forEach(walk);
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for (const note of folder.notes)
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out.push({id: this.relative(note.path), updated: modifiedIso(Gio.File.new_for_path(note.path))});
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};
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walk(this.tree());
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return out;
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}
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// Notiz vom Server übernehmen. Die Änderungszeit wird übernommen, damit sie nicht als neu gilt.
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writeRemoteNote(relative, content, updated) {
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const path = this.absolute(relative);
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GLib.mkdir_with_parents(GLib.path_get_dirname(path), 0o755);
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GLib.file_set_contents(path, content);
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setModified(Gio.File.new_for_path(path), updated);
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delete this.deletedNotes[relative];
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writeJson(this._deletedNotesPath, this.deletedNotes);
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this._changed();
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}
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deleteRemoteNote(relative) {
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const path = this.absolute(relative);
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if (GLib.file_test(path, GLib.FileTest.EXISTS))
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Gio.File.new_for_path(path).delete(null);
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this._changed();
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}
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_rememberDeleted(path) {
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this.deletedNotes[this.relative(path)] = new Date().toISOString();
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writeJson(this._deletedNotesPath, this.deletedNotes);
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}
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readNote(path) {
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const [, bytes] = GLib.file_get_contents(path);
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return decoder.decode(bytes);
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}
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writeNote(path, text) {
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GLib.file_set_contents(path, text);
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}
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createNote(folder, name) {
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checkName(name);
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const path = GLib.build_filenamev([folder, `${name}.md`]);
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if (GLib.file_test(path, GLib.FileTest.EXISTS))
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throw new Error('Diese Notiz gibt es schon');
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GLib.file_set_contents(path, '');
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delete this.deletedNotes[this.relative(path)];
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writeJson(this._deletedNotesPath, this.deletedNotes);
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return path;
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}
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createFolder(parent, name) {
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checkName(name);
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const path = GLib.build_filenamev([parent, name]);
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if (GLib.file_test(path, GLib.FileTest.EXISTS))
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throw new Error('Diesen Ordner gibt es schon');
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Gio.File.new_for_path(path).make_directory(null);
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return path;
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}
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renameNote(path, name) {
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checkName(name);
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const target = GLib.build_filenamev([GLib.path_get_dirname(path), `${name}.md`]);
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if (GLib.file_test(target, GLib.FileTest.EXISTS))
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throw new Error('Diese Notiz gibt es schon');
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Gio.File.new_for_path(path).move(Gio.File.new_for_path(target), Gio.FileCopyFlags.NONE, null, null);
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// Für den Sync ist das löschen plus neu anlegen
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this._rememberDeleted(path);
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this._touch(target);
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return target;
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}
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_touch(path) {
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setModified(Gio.File.new_for_path(path), new Date().toISOString());
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}
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renameFolder(path, name) {
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checkName(name);
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const target = GLib.build_filenamev([GLib.path_get_dirname(path), name]);
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if (GLib.file_test(target, GLib.FileTest.EXISTS))
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throw new Error('Diesen Ordner gibt es schon');
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const notes = [];
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const collect = folder => {
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folder.folders.forEach(collect);
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notes.push(...folder.notes.map(n => n.path));
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};
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collect(listFolder(path));
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Gio.File.new_for_path(path).move(Gio.File.new_for_path(target), Gio.FileCopyFlags.NONE, null, null);
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for (const note of notes) {
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this._rememberDeleted(note);
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this._touch(target + note.slice(path.length));
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}
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return target;
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}
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deleteNote(path) {
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Gio.File.new_for_path(path).delete(null);
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this._rememberDeleted(path);
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}
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folderEmpty(path) {
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const node = listFolder(path);
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return !node.folders.length && !node.notes.length;
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}
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deleteFolder(path) {
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if (!this.folderEmpty(path))
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throw new Error('Der Ordner ist nicht leer');
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Gio.File.new_for_path(path).delete(null);
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}
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}
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