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70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
/**
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* notion-enhancer: api
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* (c) 2021 dragonwocky <thedragonring.bod@gmail.com> (https://dragonwocky.me/)
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* (https://notion-enhancer.github.io/) under the MIT license
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*/
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'use strict';
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/** environment-specific data persistence */
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/**
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* get persisted data
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* @param {string[]} path - the path of keys to the value being fetched
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* @param {unknown=} fallback - a default value if the path is not matched
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* @returns {Promise} value ?? fallback
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*/
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export const get = (path, fallback = undefined) => {
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return globalThis.__enhancerElectronApi.db.get(path, fallback);
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};
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/**
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* persist data
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* @param {string[]} path - the path of keys to the value being set
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* @param {unknown} value - the data to save
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* @returns {Promise} resolves when data has been saved
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*/
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export const set = (path, value) => {
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return globalThis.__enhancerElectronApi.db.set(path, value);
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};
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/**
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* create a wrapper for accessing a partition of the storage
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* @param {string[]} namespace - the path of keys to prefix all storage requests with
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* @param {function=} get - the storage get function to be wrapped
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* @param {function=} set - the storage set function to be wrapped
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* @returns {object} an object with the wrapped get/set functions
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*/
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export const db = (namespace, getFunc = get, setFunc = set) => {
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if (typeof namespace === 'string') namespace = [namespace];
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return {
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get: (path = [], fallback = undefined) => getFunc([...namespace, ...path], fallback),
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set: (path, value) => setFunc([...namespace, ...path], value),
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};
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};
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/**
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* add an event listener for changes in storage
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* @param {onStorageChangeCallback} callback - called whenever a change in
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* storage is initiated from the current process
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*/
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export const addChangeListener = (callback) => {
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return globalThis.__enhancerElectronApi.db.addChangeListener(callback);
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};
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/**
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* remove a listener added with storage.addChangeListener
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* @param {onStorageChangeCallback} callback
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*/
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export const removeChangeListener = (callback) => {
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return globalThis.__enhancerElectronApi.db.removeChangeListener(callback);
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};
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/**
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* @callback onStorageChangeCallback
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* @param {object} event
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* @param {string} event.path- the path of keys to the changed value
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* @param {string=} event.new - the new value being persisted to the store
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* @param {string=} event.old - the previous value associated with the key
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*/
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