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index.ts
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import _Vue from "vue";
import axios from 'axios';
import VueI18n from 'vue-i18n';
import { Store } from "vuex";
import Vue from 'vue';
import { INodeTranslationHeaders, IRootState } from '@/Interface';
import {
deriveMiddleKey,
isNestedInCollectionLike,
normalize,
insertOptionsAndValues,
} from "./utils";
import {
locale,
} from 'n8n-design-system';
import englishBaseText from './locales/en.json';
Vue.use(VueI18n);
locale.use('en');
export function I18nPlugin(vue: typeof _Vue, store: Store<IRootState>): void {
const i18n = new I18nClass(store);
Object.defineProperty(vue, '$locale', {
get() { return i18n; },
});
Object.defineProperty(vue.prototype, '$locale', {
get() { return i18n; },
});
}
export class I18nClass {
$store: Store<IRootState>;
constructor(store: Store<IRootState>) {
this.$store = store;
}
private get i18n(): VueI18n {
return i18nInstance;
}
// ----------------------------------
// helper methods
// ----------------------------------
exists(key: string) {
return this.i18n.te(key);
}
shortNodeType(longNodeType: string) {
return longNodeType.replace('n8n-nodes-base.', '');
}
// ----------------------------------
// render methods
// ----------------------------------
/**
* Render a string of base text, i.e. a string with a fixed path to the localized value. Optionally allows for [interpolation](https://kazupon.github.io/vue-i18n/guide/formatting.html#named-formatting) when the localized value contains a string between curly braces.
*/
baseText(
key: BaseTextKey,
options?: { adjustToNumber?: number; interpolate?: { [key: string]: string } },
): string {
if (options && options.adjustToNumber) {
return this.i18n.tc(key, options.adjustToNumber, options && options.interpolate).toString();
}
return this.i18n.t(key, options && options.interpolate).toString();
}
/**
* Render a string of dynamic text, i.e. a string with a constructed path to the localized value.
*/
private dynamicRender(
{ key, fallback }: { key: string; fallback: string; },
) {
return this.i18n.te(key) ? this.i18n.t(key).toString() : fallback;
}
/**
* Render a string of header text (a node's name and description),
* used variously in the nodes panel, under the node icon, etc.
*/
headerText(arg: { key: string; fallback: string; }) {
return this.dynamicRender(arg);
}
/**
* Namespace for methods to render text in the credentials details modal.
*/
credText () {
const credentialType = this.$store.getters.activeCredentialType;
const credentialPrefix = `n8n-nodes-base.credentials.${credentialType}`;
const context = this;
return {
/**
* Display name for a top-level param.
*/
inputLabelDisplayName(
{ name: parameterName, displayName }: { name: string; displayName: string; },
) {
if (['clientId', 'clientSecret'].includes(parameterName)) {
return context.dynamicRender({
key: `_reusableDynamicText.oauth2.${parameterName}`,
fallback: displayName,
});
}
return context.dynamicRender({
key: `${credentialPrefix}.${parameterName}.displayName`,
fallback: displayName,
});
},
/**
* Hint for a top-level param.
*/
hint(
{ name: parameterName, hint }: { name: string; hint: string; },
) {
return context.dynamicRender({
key: `${credentialPrefix}.${parameterName}.hint`,
fallback: hint,
});
},
/**
* Description (tooltip text) for an input label param.
*/
inputLabelDescription(
{ name: parameterName, description }: { name: string; description: string; },
) {
return context.dynamicRender({
key: `${credentialPrefix}.${parameterName}.description`,
fallback: description,
});
},
/**
* Display name for an option inside an `options` or `multiOptions` param.
*/
optionsOptionDisplayName(
{ name: parameterName }: { name: string; },
{ value: optionName, name: displayName }: { value: string; name: string; },
) {
return context.dynamicRender({
key: `${credentialPrefix}.${parameterName}.options.${optionName}.displayName`,
fallback: displayName,
});
},
/**
* Description for an option inside an `options` or `multiOptions` param.
*/
optionsOptionDescription(
{ name: parameterName }: { name: string; },
{ value: optionName, description }: { value: string; description: string; },
) {
return context.dynamicRender({
key: `${credentialPrefix}.${parameterName}.options.${optionName}.description`,
fallback: description,
});
},
/**
* Placeholder for a `string` param.
*/
placeholder(
{ name: parameterName, placeholder }: { name: string; placeholder: string; },
) {
return context.dynamicRender({
key: `${credentialPrefix}.${parameterName}.placeholder`,
fallback: placeholder,
});
},
};
}
/**
* Namespace for methods to render text in the node details view,
* except for `eventTriggerDescription`.
*/
nodeText () {
const activeNode = this.$store.getters.activeNode;
const nodeType = activeNode ? this.shortNodeType(activeNode.type) : ''; // unused in eventTriggerDescription
const initialKey = `n8n-nodes-base.nodes.${nodeType}.nodeView`;
const context = this;
return {
/**
* Display name for an input label, whether top-level or nested.
*/
inputLabelDisplayName(
parameter: { name: string; displayName: string; type: string },
path: string,
) {
const middleKey = deriveMiddleKey(path, parameter);
return context.dynamicRender({
key: `${initialKey}.${middleKey}.displayName`,
fallback: parameter.displayName,
});
},
/**
* Description (tooltip text) for an input label, whether top-level or nested.
*/
inputLabelDescription(
parameter: { name: string; description: string; type: string },
path: string,
) {
const middleKey = deriveMiddleKey(path, parameter);
return context.dynamicRender({
key: `${initialKey}.${middleKey}.description`,
fallback: parameter.description,
});
},
/**
* Hint for an input, whether top-level or nested.
*/
hint(
parameter: { name: string; hint: string; type: string },
path: string,
) {
const middleKey = deriveMiddleKey(path, parameter);
return context.dynamicRender({
key: `${initialKey}.${middleKey}.hint`,
fallback: parameter.hint,
});
},
/**
* Placeholder for an input label or `collection` or `fixedCollection` param,
* whether top-level or nested.
* - For an input label, the placeholder is unselectable greyed-out sample text.
* - For a `collection` or `fixedCollection`, the placeholder is the button text.
*/
placeholder(
parameter: { name: string; placeholder: string; type: string },
path: string,
) {
let middleKey = parameter.name;
if (isNestedInCollectionLike(path)) {
const pathSegments = normalize(path).split('.');
middleKey = insertOptionsAndValues(pathSegments).join('.');
}
return context.dynamicRender({
key: `${initialKey}.${middleKey}.placeholder`,
fallback: parameter.placeholder,
});
},
/**
* Display name for an option inside an `options` or `multiOptions` param,
* whether top-level or nested.
*/
optionsOptionDisplayName(
parameter: { name: string; },
{ value: optionName, name: displayName }: { value: string; name: string; },
path: string,
) {
let middleKey = parameter.name;
if (isNestedInCollectionLike(path)) {
const pathSegments = normalize(path).split('.');
middleKey = insertOptionsAndValues(pathSegments).join('.');
}
return context.dynamicRender({
key: `${initialKey}.${middleKey}.options.${optionName}.displayName`,
fallback: displayName,
});
},
/**
* Description for an option inside an `options` or `multiOptions` param,
* whether top-level or nested.
*/
optionsOptionDescription(
parameter: { name: string; },
{ value: optionName, description }: { value: string; description: string; },
path: string,
) {
let middleKey = parameter.name;
if (isNestedInCollectionLike(path)) {
const pathSegments = normalize(path).split('.');
middleKey = insertOptionsAndValues(pathSegments).join('.');
}
return context.dynamicRender({
key: `${initialKey}.${middleKey}.options.${optionName}.description`,
fallback: description,
});
},
/**
* Display name for an option in the dropdown menu of a `collection` or
* fixedCollection` param. No nesting support since `collection` cannot
* be nested in a `collection` or in a `fixedCollection`.
*/
collectionOptionDisplayName(
parameter: { name: string; },
{ name: optionName, displayName }: { name: string; displayName: string; },
path: string,
) {
let middleKey = parameter.name;
if (isNestedInCollectionLike(path)) {
const pathSegments = normalize(path).split('.');
middleKey = insertOptionsAndValues(pathSegments).join('.');
}
return context.dynamicRender({
key: `${initialKey}.${middleKey}.options.${optionName}.displayName`,
fallback: displayName,
});
},
/**
* Text for a button to add another option inside a `collection` or
* `fixedCollection` param having `multipleValues: true`.
*/
multipleValueButtonText(
{ name: parameterName, typeOptions: { multipleValueButtonText } }:
{ name: string; typeOptions: { multipleValueButtonText: string; } },
) {
return context.dynamicRender({
key: `${initialKey}.${parameterName}.multipleValueButtonText`,
fallback: multipleValueButtonText,
});
},
eventTriggerDescription(
nodeType: string,
eventTriggerDescription: string,
) {
return context.dynamicRender({
key: `n8n-nodes-base.nodes.${nodeType}.nodeView.eventTriggerDescription`,
fallback: eventTriggerDescription,
});
},
};
}
}
export const i18nInstance = new VueI18n({
locale: 'en',
fallbackLocale: 'en',
messages: { en: englishBaseText },
silentTranslationWarn: true,
});
locale.i18n((key: string, options?: {interpolate: object}) => i18nInstance.t(key, options && options.interpolate));
const loadedLanguages = ['en'];
function setLanguage(language: string) {
i18nInstance.locale = language;
axios.defaults.headers.common['Accept-Language'] = language;
document!.querySelector('html')!.setAttribute('lang', language);
// update n8n design system and element ui
locale.use(language);
return language;
}
export async function loadLanguage(language?: string) {
if (!language) return Promise.resolve();
if (i18nInstance.locale === language) {
return Promise.resolve(setLanguage(language));
}
if (loadedLanguages.includes(language)) {
return Promise.resolve(setLanguage(language));
}
const { numberFormats, ...rest } = require(`./locales/${language}.json`);
i18nInstance.setLocaleMessage(language, rest);
if (numberFormats) {
i18nInstance.setNumberFormat(language, numberFormats);
}
loadedLanguages.push(language);
setLanguage(language);
}
/**
* Add a node translation to the i18n instance's `messages` object.
*/
export function addNodeTranslation(
nodeTranslation: { [nodeType: string]: object },
language: string,
) {
const oldNodesBase = i18nInstance.messages[language]['n8n-nodes-base'] || {};
const updatedNodes = {
// @ts-ignore
...oldNodesBase.nodes,
...nodeTranslation,
};
const newNodesBase = {
'n8n-nodes-base': Object.assign(
oldNodesBase,
{ nodes: updatedNodes },
),
};
i18nInstance.setLocaleMessage(
language,
Object.assign(i18nInstance.messages[language], newNodesBase),
);
}
/**
* Add a credential translation to the i18n instance's `messages` object.
*/
export function addCredentialTranslation(
nodeCredentialTranslation: { [credentialType: string]: object },
language: string,
) {
const oldNodesBase = i18nInstance.messages[language]['n8n-nodes-base'] || {};
const updatedCredentials = {
// @ts-ignore
...oldNodesBase.credentials,
...nodeCredentialTranslation,
};
const newNodesBase = {
'n8n-nodes-base': Object.assign(
oldNodesBase,
{ credentials: updatedCredentials },
),
};
i18nInstance.setLocaleMessage(
language,
Object.assign(i18nInstance.messages[language], newNodesBase),
);
}
/**
* Add a node's header strings to the i18n instance's `messages` object.
*/
export function addHeaders(
headers: INodeTranslationHeaders,
language: string,
) {
i18nInstance.setLocaleMessage(
language,
Object.assign(i18nInstance.messages[language], { headers }),
);
}
// ----------------------------------
// typings
// ----------------------------------
declare module 'vue/types/vue' {
interface Vue {
$locale: I18nClass;
}
}
type GetBaseTextKey<T> = T extends `_${string}` ? never : T;
export type BaseTextKey = GetBaseTextKey<keyof typeof englishBaseText>;
type GetCategoryName<T> = T extends `nodeCreator.categoryNames.${infer C}`
? C
: never;
export type CategoryName = GetCategoryName<keyof typeof englishBaseText>;