fullfrontend / icls

import debugRenderer from 'debug';

let debug = debugRenderer('icls:store:inmemory');

export default class InMemoryStore {

    constructor (initialStore = {}) {

        this._store = initialStore;

    }

    _recurse (key, value) {

        if (key === undefined) {

            return this._store;

        }

        let writeMode = value !== undefined;

        let currentLevel = this._store;

        let levels = key.split('.');

        for (let i = 0, l = levels.length; i < l; i++) {

            if (!writeMode && currentLevel[levels[i]] === undefined) {

                return null;

            }

            if (!writeMode) {

                currentLevel = currentLevel[levels[i]];

                continue;

            }

            if (currentLevel[levels[i]] === undefined) {

                currentLevel[levels[i]] = {};

            }

            if (i + 1 === l) {

                currentLevel[levels[i]] = value;

            }

            currentLevel = currentLevel[levels[i]];

        }

        return currentLevel;

    }

    get (key, defaultValue = null) {

        debug('Get key %s with default value %s', key, defaultValue);

        return this._recurse(key) || defaultValue;

    }

    set (key, value) {

        debug('Set key %s with value %s', key, value);

        this._recurse(key, value);

        return this;

    }

    reset () {

        debug('Reset store');

        this._store = {};

    }

    toJS () {

        return this._store;

    }

}