forked from cory/tildefriends
85 lines
1.9 KiB
JavaScript
85 lines
1.9 KiB
JavaScript
import * as tfrpc from '/tfrpc.js';
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let g_db;
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tfrpc.register(async function todo_get_all() {
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let names = await todo_get_names();
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let result = [];
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for (let name of names) {
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result.push({
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name: name,
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items: await todo_get(name),
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});
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}
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return result;
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});
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async function todo_get_names() {
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return JSON.parse((await g_db.get('files')) ?? '[]');
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}
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async function todo_add(list) {
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let exchanged = false;
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let tries = 10;
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while (!exchanged && tries-- > 0) {
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let original = await g_db.get('files');
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let names = JSON.parse(original ?? '[]');
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let set = new Set(names);
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set.add(list);
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names = JSON.stringify([...set].sort());
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exchanged =
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original === names || (await g_db.exchange('files', original, names));
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}
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return exchanged;
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}
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tfrpc.register(todo_add);
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async function todo_remove(list) {
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let exchanged = false;
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let tries = 10;
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while (!exchanged && tries-- > 0) {
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let original = await g_db.get('files');
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let names = JSON.parse(original ?? '[]');
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let set = new Set(names);
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set.delete(list);
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names = JSON.stringify([...set].sort());
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exchanged =
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original === names || (await g_db.exchange('files', original, names));
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}
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await g_db.remove('list:' + list);
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return exchanged;
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}
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tfrpc.register(todo_remove);
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tfrpc.register(async function todo_rename(old_name, new_name) {
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if (await g_db.get('list:' + new_name)) {
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throw RuntimeError(`${new_name} already exists.`);
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}
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let list = await todo_get(old_name);
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await todo_set(new_name, list);
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await todo_add(new_name);
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await todo_remove(old_name);
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});
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async function todo_get(list) {
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try {
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let value = await g_db.get('list:' + list);
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return JSON.parse(value ?? '[]');
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} catch (error) {
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print(error);
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return [];
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}
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}
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async function todo_set(list, value) {
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await g_db.set('list:' + list, JSON.stringify(value));
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}
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tfrpc.register(todo_set);
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async function main() {
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g_db = await database('todo');
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await app.setDocument(utf8Decode(getFile('index.html')));
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}
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main();
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