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path: root/packages/main/src/stores/SharedStore.ts
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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 { defineSharedStoreModel, WritingDirection } from '@sophie/shared';
import { getSnapshot, Instance } from 'mobx-state-tree';

import getLogger from '../utils/getLogger.js';

import GlobalSettings from './GlobalSettings.js';
import Profile from './Profile.js';
import Service from './Service.js';
import type Config from './config/Config.js';
import loadConfig from './config/loadConfig.js';

const log = getLogger('SharedStore');

function getConfigs<T>(models: { config: T }[]): T[] | undefined {
  return models.length === 0 ? undefined : models.map((model) => model.config);
}

const SharedStore = defineSharedStoreModel(GlobalSettings, Profile, Service)
  .views((self) => ({
    get config(): Config {
      const { settings, profiles, services } = self;
      const globalSettingsConfig = getSnapshot(settings);
      return {
        ...globalSettingsConfig,
        profiles: getConfigs(profiles),
        services: getConfigs(services),
      };
    },
    get canSwitchServices(): boolean {
      return self.services.length >= 2;
    },
    get selectedServiceIndex(): number {
      const {
        services,
        settings: { selectedService },
      } = self;
      if (selectedService === undefined) {
        return -1;
      }
      return services.indexOf(selectedService);
    },
  }))
  .actions((self) => ({
    loadConfig(config: Config): void {
      loadConfig(self, config);
    },
    setLanguage(langauge: string, writingDirection: WritingDirection): void {
      self.language = langauge;
      self.writingDirection = writingDirection;
    },
    setShouldUseDarkColors(shouldUseDarkColors: boolean): void {
      self.shouldUseDarkColors = shouldUseDarkColors;
    },
    activateServiceByOffset(offset: number): void {
      if (offset === 0) {
        return;
      }
      const { selectedServiceIndex: index, services, settings } = self;
      if (index < 0) {
        log.warn('No selected service to offset');
        return;
      }
      const { length } = services;
      const indexWithOffset = (index + offset) % length;
      // Make sure that `newIndex` is positive even for large negative `offset`.
      const newIndex =
        indexWithOffset < 0 ? indexWithOffset + length : indexWithOffset;
      const newService = services.at(newIndex);
      if (newService === undefined) {
        log.error(
          'Could not advance selected service index from',
          index,
          'by',
          offset,
          'to',
          newIndex,
        );
        return;
      }
      settings.setSelectedService(newService);
    },
  }))
  .actions((self) => ({
    activateNextService(): void {
      self.activateServiceByOffset(1);
    },
    activatePreviousService(): void {
      self.activateServiceByOffset(-1);
    },
  }));

/*
  eslint-disable-next-line @typescript-eslint/no-redeclare --
  Intentionally naming the type the same as the store definition.
*/
interface SharedStore extends Instance<typeof SharedStore> {}

export default SharedStore;

export type {
  SharedStoreSnapshotIn,
  SharedStoreSnapshotOut,
} from '@sophie/shared';