60 lines
1.6 KiB
TypeScript
60 lines
1.6 KiB
TypeScript
import type * as dispatcherNs from '@mtcute/dispatcher'
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import type { I18nStrings, I18nValue } from './types.js'
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/**
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* Create an index of i18n strings delimited by "."
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*
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* @param strings Strings object
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*/
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export function createI18nStringsIndex(strings: I18nStrings): Record<string, I18nValue> {
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const ret: Record<string, I18nValue> = {}
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function add(obj: I18nStrings, prefix: string) {
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for (const key in obj) {
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const val = obj[key]
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if (typeof val === 'object' && !('text' in val)) {
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add(val, `${prefix + key}.`)
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} else {
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ret[prefix + key] = val as string
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}
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}
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}
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add(strings, '')
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return ret
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}
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/**
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* Extract language from `@mtcute/dispatcher` context.
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* Can be used for customized adapters or external i18n libraries.
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*
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* @param update Update to extract language from
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*/
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export function extractLanguageFromUpdate(update: dispatcherNs.UpdateContextType): string | null | undefined {
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if (!('_name' in update)) return null
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switch (update._name) {
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case 'new_message': {
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const { sender } = update
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return sender.type === 'user' ? sender.language : null
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}
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case 'poll_vote': {
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const { peer } = update
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return peer?.type === 'user' ? peer.language : null
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}
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case 'chat_member':
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case 'inline_query':
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case 'chosen_inline_result':
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case 'callback_query':
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case 'bot_stopped':
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case 'bot_chat_join_request':
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return update.user.language
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default:
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return null
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}
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}
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