import { None , Ok , Result } from 'ts-results' ; import type { TypedMessageText } from '..' ; import { makeTypedMessageText } from '../core' ; export function encodeTypedMessageV38Format ( message ) { const encoder = new TextEncoder ( ) ; if ( message . meta ?. size ) { const rec = Object . fromEntries ( message . meta . entries ( ) ) ; return encoder . encode ( `${ JSON . stringify ( rec ) }\u{1F9E9}${ message . content }` ) ; } return encoder . encode ( message . content ) ; } export function decodeTypedMessageV38ToV40Format ( raw , version ) { const decoder = new TextDecoder ( ) ; const text = Result . wrap ( ( ) => decoder . decode ( raw ) ) ; const { val , err } = text ; if ( err ) return text ; if ( version === - 38 ) { const maybeMetadata = ( ( ) => { if ( ! val . includes ( '\u{1F9E9}' ) ) return None ; const [ maybeJSON ] = val . split ( '\u{1F9E9}' ) ; return Result . wrap ( ( ) => JSON . parse ( maybeJSON ) ) . toOption ( ) . map ( ( val ) => { if ( typeof val !== 'object' || Array . isArray ( val ) ) return new Map ( ) ; return new Map ( Object . entries ( val ) ) ; } ) ; } ) ( ) ; return Ok ( maybeMetadata . some ? makeTypedMessageText ( val . replace ( /.+\u{1F9E9}/u , '' ) , maybeMetadata . val ) : makeTypedMessageText ( val ) ) ; } return Ok ( makeTypedMessageText ( val ) ) ; }