refactor attachments

Signed-off-by: Andrey Platov <andrey@hardcoreeng.com>

dev/server-chunter-resources/src/index.ts

@@ -14,8 +14,9 @@
 // limitations under the License.
 //
 
-import type { Tx, TxCreateDoc, Data, Ref, Doc, TxFactory } from '@anticrm/core'
-import type { Message, Backlink } from '@anticrm/chunter'
+import type { Tx, TxCreateDoc, Data, Ref, Doc, TxFactory, Class } from '@anticrm/core'
+import type { FindAll } from '@anticrm/server-core'
+import type { Message, Backlink, Attachment } from '@anticrm/chunter'
 
 import core from '@anticrm/core'
 import chunter from '@anticrm/chunter'
@@ -26,6 +27,7 @@ function extractBacklinks (backlinkId: Ref<Doc>, message: string, kids: NodeList
     if (kid.nodeName === 'span') {
       result.push({
         attachedTo: kid.getAttribute('data-id') as Ref<Doc>,
+        attachedToClass: kid.getAttribute('data-class') as Ref<Class<Doc>>,
         backlinkId,
         backlinkClass: chunter.class.Message,
         message
@@ -57,9 +59,30 @@ export async function OnMessage (tx: Tx, txFactory: TxFactory): Promise<Tx[]> {
   return []
 }
 
+interface WithAttachements extends Doc {
+  attachments: number
+}
+
+/**
+ * @public
+ */
+export async function OnAttachment (tx: Tx, txFactory: TxFactory, findAll: FindAll<Doc>): Promise<Tx[]> {
+  if (tx._class === core.class.TxCreateDoc) {
+    const createTx = tx as TxCreateDoc<Attachment>
+    if (createTx.objectClass === chunter.class.Attachment) {
+      const _id = createTx.attributes.attachedTo as Ref<WithAttachements>
+      const _class = createTx.attributes.attachedToClass as Ref<Class<WithAttachements>>
+      const attachedTo = (await findAll(_class, { _id }))[0]
+      return [txFactory.createTxUpdateDoc(_class, attachedTo.space, _id, { $inc: { attachments: 1 } })]
+    }
+  }
+  return []
+}
+
 // eslint-disable-next-line @typescript-eslint/explicit-function-return-type
 export default async () => ({
   trigger: {
-    OnMessage
+    OnMessage,
+    OnAttachment
   }
 })