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/*
* Copyright (C) 2021-2022 Kristóf Marussy <kristof@marussy.com>
*
* This file is part of Sophie.
*
* Sophie is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { debounce } from 'lodash';
import {
applySnapshot,
flow,
getSnapshot,
IDisposer,
Instance,
onSnapshot,
} from 'mobx-state-tree';
import {
config as originalConfig,
ConfigSnapshotIn,
ConfigSnapshotOut,
ThemeSource,
} from '@sophie/shared';
import { CONFIG_DEBOUNCE_TIME, ReadConfigResult } from '../services/ConfigPersistence';
import { getEnv } from '../services/MainEnv';
export const config = originalConfig.actions((self) => ({
setThemeSource(mode: ThemeSource) {
self.themeSource = mode;
},
})).actions((self) => {
let lastSnapshotOnDisk: ConfigSnapshotOut | null = null;
let writingConfig = false;
let configMtime: Date | null = null;
let onSnapshotDisposer: IDisposer | null = null;
let watcherDisposer: IDisposer | null = null;
function dispose() {
onSnapshotDisposer?.();
watcherDisposer?.();
}
const actions: {
beforeDetach(): void,
readConfig(): Promise<boolean>;
writeConfig(): Promise<void>;
initConfig(): Promise<void>;
} = {
beforeDetach() {
dispose();
},
readConfig: flow(function*() {
const result: ReadConfigResult = yield getEnv(self).configPersistence.readConfig();
if (result.found) {
try {
applySnapshot(self, result.data);
lastSnapshotOnDisk = getSnapshot(self);
console.log('Loaded config');
} catch (err) {
console.error('Failed to read config', result.data, err);
}
}
return result.found;
}),
writeConfig: flow(function*() {
const snapshot = getSnapshot(self);
writingConfig = true;
try {
configMtime = yield getEnv(self).configPersistence.writeConfig(snapshot);
lastSnapshotOnDisk = snapshot;
console.log('Wrote config');
} finally {
writingConfig = false;
}
}),
initConfig: flow(function*() {
dispose();
const foundConfig: boolean = yield actions.readConfig();
if (!foundConfig) {
console.log('Creating new config file');
try {
yield actions.writeConfig();
} catch (err) {
console.error('Failed to initialize config');
}
}
onSnapshotDisposer = onSnapshot(self, debounce((snapshot) => {
// We can compare snapshots by reference, since it is only recreated on store changes.
if (lastSnapshotOnDisk !== snapshot) {
actions.writeConfig().catch((err) => {
console.log('Failed to write config on config change', err);
})
}
}, CONFIG_DEBOUNCE_TIME));
watcherDisposer = getEnv(self).configPersistence.watchConfig(async (mtime) => {
if (!writingConfig && (configMtime === null || mtime > configMtime)) {
await actions.readConfig();
}
});
}),
};
return actions;
});
export interface Config extends Instance<typeof config> {}
export type { ConfigSnapshotIn, ConfigSnapshotOut };
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