Первая версия вложенных файлов работает

shine-UI/js/services/dm-tech-blocks.js

@@ -8,6 +8,7 @@ function defaultParsed(rawText = '') {
     blocks: [],
     replyRef: null,
     callSummary: null,
+    fileAttachment: null,
   };
 }
 
@@ -87,6 +88,51 @@ export function buildDmReplyTechBlock({ baseKey = '' } = {}) {
   return `<S:reply;v=1;id=${cleanBaseKey}>`;
 }
 
+function decodeFileField(value = '') {
+  try {
+    return decodeURIComponent(String(value || ''));
+  } catch {
+    return String(value || '');
+  }
+}
+
+function normalizeFileAttachment(fields = {}) {
+  const id = String(fields.id || '').trim();
+  const url = decodeFileField(fields.url || '').trim();
+  const keyB64Url = String(fields.key || '').trim();
+  const ivB64Url = String(fields.iv || '').trim();
+  const name = decodeFileField(fields.name || '').trim() || 'file';
+  const mime = decodeFileField(fields.mime || '').trim() || 'application/octet-stream';
+  const size = Number(fields.size || 0);
+  const encryptedSize = Number(fields.encsize || 0);
+  if (!id || !url || !keyB64Url || !ivB64Url || !Number.isFinite(size) || size < 0) return null;
+  return {
+    version: Number(fields.v || 0),
+    id,
+    url,
+    keyB64Url,
+    ivB64Url,
+    name,
+    mime,
+    size,
+    encryptedSize: Number.isFinite(encryptedSize) && encryptedSize > 0 ? encryptedSize : 0,
+  };
+}
+
+export function buildDmFileTechBlock(attachment = {}) {
+  const id = String(attachment?.id || '').trim();
+  const url = String(attachment?.url || '').trim();
+  const keyB64Url = String(attachment?.keyB64Url || '').trim();
+  const ivB64Url = String(attachment?.ivB64Url || '').trim();
+  const size = Math.max(0, Math.floor(Number(attachment?.size || 0)));
+  const encryptedSize = Math.max(0, Math.floor(Number(attachment?.encryptedSize || 0)));
+  if (!id || !url || !keyB64Url || !ivB64Url) throw new Error('Не хватает данных для технического блока файла');
+  const name = encodeURIComponent(String(attachment?.name || 'file'));
+  const mime = encodeURIComponent(String(attachment?.mime || 'application/octet-stream'));
+  const encodedUrl = encodeURIComponent(url);
+  return `<S:file;v=1;id=${id};url=${encodedUrl};key=${keyB64Url};iv=${ivB64Url};name=${name};mime=${mime};size=${size};encsize=${encryptedSize}>`;
+}
+
 export function parseDmTechBlocks(rawText = '') {
   const text = String(rawText || '');
   if (!hasTechPrefix(text)) return defaultParsed(text);
@@ -95,6 +141,7 @@ export function parseDmTechBlocks(rawText = '') {
   let cursor = 0;
   let replyRef = null;
   let callSummary = null;
+  let fileAttachment = null;
 
   while (hasTechPrefix(text, cursor)) {
     const end = text.indexOf('>', cursor);
@@ -142,6 +189,8 @@ export function parseDmTechBlocks(rawText = '') {
           reason: String(fields.reason || '').trim().toLowerCase(),
         };
       }
+    } else if (kind === 'file' && !fileAttachment) {
+      fileAttachment = normalizeFileAttachment(fields);
     }
 
     cursor = end + 1;
@@ -157,5 +206,6 @@ export function parseDmTechBlocks(rawText = '') {
     blocks,
     replyRef,
     callSummary,
+    fileAttachment,
   };
 }