Initial implementation for generating thread JSON files

src/mail/read.ts

@@ -10,12 +10,12 @@ import {AsyncCollection} from "../bones/collection/AsyncCollection.ts";
 import {withClient} from "./client.ts";
 import {buildThreadAddressMatcher} from "../threads/id.ts";
 
-export async function getMailboxesToSearch(thread?: string): Promise<Collection<string>> {
+export async function getMailboxesToSearch(thread?: string, client?: ImapFlow): Promise<Collection<string>> {
     // There are 2 possibilities for where mail might end up.
     // Either the mail-server is configured to forward the + extensions
     // to their own folders automatically (e.g. the "c.1234" folder), or
     // aliased mail just winds up in INBOX.
-    return collect(await withClient(c => c.list()))
+    return collect(await (client?.list() || withClient(c => c.list())))
         .filter(box =>
             box.name === 'INBOX' || box.specialUse === '\\\\Inbox'
                 || (!thread && box.name.startsWith(config.mail.threads.idPrefix))
@@ -31,6 +31,7 @@ export async function withMailbox<T>(mailbox: string, cb: (c: AsyncCollection<Me
 export class MailboxIterable extends Iterable<Message> {
     private addressMatcher: RegExp
     private client?: Maybe<ImapFlow>
+    private borrowedClient: boolean = false
     private query: FetchQueryObject = {
         envelope: true,
         source: true,
@@ -53,9 +54,14 @@ export class MailboxIterable extends Iterable<Message> {
 
     constructor(
         public readonly mailbox: string,
+        client?: ImapFlow,
     ) {
         super()
         this.addressMatcher = buildThreadAddressMatcher()
+        if ( client ) {
+            this.client = client
+            this.borrowedClient = true
+        }
     }
 
     async at(i: number): Promise<Maybe<Message>> {
@@ -104,6 +110,8 @@ export class MailboxIterable extends Iterable<Message> {
             date: message.envelope.date,
             from: message.envelope.from[0],
             subject: message.envelope.subject,
+            mailbox: this.mailbox,
+            modseq: message.modseq,
             recipients,
             content,
             thread,
@@ -111,7 +119,7 @@ export class MailboxIterable extends Iterable<Message> {
     }
 
     public async release(): Promise<void> {
-        if ( this.client ) {
+        if ( this.client && !this.borrowedClient ) {
             await this.client.logout()
         }
     }