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import EventEmitter from './EventEmitter.js';import * as utils from './utils.js';
function deepFind(obj, path, keySeparator = '.') {  if (!obj) return undefined;  if (obj[path]) return obj[path];  const paths = path.split(keySeparator);  let current = obj;  for (let i = 0; i < paths.length; ++i) {    if (!current) return undefined;    if (typeof current[paths[i]] === 'string' && i + 1 < paths.length) {      return undefined;    }    if (current[paths[i]] === undefined) {      let j = 2;      let p = paths.slice(i, i + j).join(keySeparator);      let mix = current[p];      while (mix === undefined && paths.length > i + j) {        j++;        p = paths.slice(i, i + j).join(keySeparator);        mix = current[p];      }      if (mix === undefined) return undefined;      if (path.endsWith(p)) {        if (typeof mix === 'string') return mix;        if (p && typeof mix[p] === 'string') return mix[p];      }      const joinedPath = paths.slice(i + j).join(keySeparator);      if (joinedPath) return deepFind(mix, joinedPath, keySeparator);      return undefined;    }    current = current[paths[i]];  }  return current;}
class ResourceStore extends EventEmitter {  constructor(data, options = { ns: ['translation'], defaultNS: 'translation' }) {    super();    if (utils.isIE10) {      EventEmitter.call(this); // <=IE10 fix (unable to call parent constructor)    }
    this.data = data || {};    this.options = options;    if (this.options.keySeparator === undefined) {      this.options.keySeparator = '.';    }    if (this.options.ignoreJSONStructure === undefined) {      this.options.ignoreJSONStructure = true;    }  }
  addNamespaces(ns) {    if (this.options.ns.indexOf(ns) < 0) {      this.options.ns.push(ns);    }  }
  removeNamespaces(ns) {    const index = this.options.ns.indexOf(ns);    if (index > -1) {      this.options.ns.splice(index, 1);    }  }
  getResource(lng, ns, key, options = {}) {    const keySeparator =      options.keySeparator !== undefined ? options.keySeparator : this.options.keySeparator;
    const ignoreJSONStructure =      options.ignoreJSONStructure !== undefined        ? options.ignoreJSONStructure        : this.options.ignoreJSONStructure;
    let path = [lng, ns];    if (key && typeof key !== 'string') path = path.concat(key);    if (key && typeof key === 'string')      path = path.concat(keySeparator ? key.split(keySeparator) : key);
    if (lng.indexOf('.') > -1) {      path = lng.split('.');    }
    const result = utils.getPath(this.data, path);    if (result || !ignoreJSONStructure || typeof key !== 'string') return result;
    return deepFind(this.data && this.data[lng] && this.data[lng][ns], key, keySeparator);  }
  addResource(lng, ns, key, value, options = { silent: false }) {    let keySeparator = this.options.keySeparator;    if (keySeparator === undefined) keySeparator = '.';
    let path = [lng, ns];    if (key) path = path.concat(keySeparator ? key.split(keySeparator) : key);
    if (lng.indexOf('.') > -1) {      path = lng.split('.');      value = ns;      ns = path[1];    }
    this.addNamespaces(ns);
    utils.setPath(this.data, path, value);
    if (!options.silent) this.emit('added', lng, ns, key, value);  }
  addResources(lng, ns, resources, options = { silent: false }) {    /* eslint no-restricted-syntax: 0 */    for (const m in resources) {      if (        typeof resources[m] === 'string' ||        Object.prototype.toString.apply(resources[m]) === '[object Array]'      )        this.addResource(lng, ns, m, resources[m], { silent: true });    }    if (!options.silent) this.emit('added', lng, ns, resources);  }
  addResourceBundle(lng, ns, resources, deep, overwrite, options = { silent: false }) {    let path = [lng, ns];    if (lng.indexOf('.') > -1) {      path = lng.split('.');      deep = resources;      resources = ns;      ns = path[1];    }
    this.addNamespaces(ns);
    let pack = utils.getPath(this.data, path) || {};
    if (deep) {      utils.deepExtend(pack, resources, overwrite);    } else {      pack = { ...pack, ...resources };    }
    utils.setPath(this.data, path, pack);
    if (!options.silent) this.emit('added', lng, ns, resources);  }
  removeResourceBundle(lng, ns) {    if (this.hasResourceBundle(lng, ns)) {      delete this.data[lng][ns];    }    this.removeNamespaces(ns);
    this.emit('removed', lng, ns);  }
  hasResourceBundle(lng, ns) {    return this.getResource(lng, ns) !== undefined;  }
  getResourceBundle(lng, ns) {    if (!ns) ns = this.options.defaultNS;
    // COMPATIBILITY: remove extend in v2.1.0    if (this.options.compatibilityAPI === 'v1') return { ...{}, ...this.getResource(lng, ns) };
    return this.getResource(lng, ns);  }
  getDataByLanguage(lng) {    return this.data[lng];  }
  hasLanguageSomeTranslations(lng) {    const data = this.getDataByLanguage(lng);    const n = (data && Object.keys(data)) || [];    return !!n.find((v) => data[v] && Object.keys(data[v]).length > 0);  }
  toJSON() {    return this.data;  }}
export default ResourceStore;