Multilevel mailbox structure

appinfo/info.xml

@@ -12,7 +12,7 @@
 - **🙈 We’re not reinventing the wheel!** Based on the great [Horde](http://horde.org) libraries.
 - **📬 Want to host your own mail server?** We don’t have to reimplement this as you could set up [Mail-in-a-Box](https://mailinabox.email)!
 	]]></description>
-	<version>1.5.0-alpha2</version>
+	<version>1.5.0-alpha3</version>
 	<licence>agpl</licence>
 	<author>Christoph Wurst</author>
 	<author>Roeland Jago Douma</author>

lib/Db/MailAccount.php

@@ -69,6 +69,8 @@
  * @method void setOrder(int $order)
  * @method bool getShowSubscribedOnly()
  * @method void setShowSubscribedOnly(bool $showSubscribedOnly)
+ * @method string|null getPersonalNamespace()
+ * @method void setPersonalNamespace(string|null $personalNamespace)
  */
 class MailAccount extends Entity {
 	protected $userId;
@@ -90,6 +92,7 @@ class MailAccount extends Entity {
 	protected $provisioned;
 	protected $order;
 	protected $showSubscribedOnly;
+	protected $personalNamespace;
 
 	/**
 	 * @param array $params
@@ -146,6 +149,7 @@ public function __construct(array $params=[]) {
 		$this->addType('provisioned', 'bool');
 		$this->addType('order', 'integer');
 		$this->addType('showSubscribedOnly', 'boolean');
+		$this->addType('personalNamespace', 'string');
 	}
 
 	/**
@@ -166,6 +170,7 @@ public function toJson() {
 			'editorMode' => $this->getEditorMode(),
 			'provisioned' => $this->getProvisioned(),
 			'showSubscribedOnly' => $this->getShowSubscribedOnly(),
+			'personalNamespace' => $this->getPersonalNamespace(),
 		];
 
 		if (!is_null($this->getOutboundHost())) {

lib/IMAP/MailboxSync.php

@@ -25,7 +25,10 @@
 
 namespace OCA\Mail\IMAP;
 
+use Horde_Imap_Client;
+use Horde_Imap_Client_Data_Namespace;
 use Horde_Imap_Client_Exception;
+use Horde_Imap_Client_Namespace_List;
 use OCA\Mail\Exception\ServiceException;
 use function in_array;
 use function json_encode;
@@ -81,6 +84,16 @@ public function sync(Account $account, bool $force = false): void {
 		}
 
 		$client = $this->imapClientFactory->getClient($account);
+		try {
+			$namespaces = $client->getNamespaces([], [
+				'ob_return' => true,
+			]);
+			$account->getMailAccount()->setPersonalNamespace(
+				$this->getPersonalNamespace($namespaces)
+			);
+		} catch (Horde_Imap_Client_Exception $e) {
+			$this->logger->debug('Getting namespaces for account ' . $account->getId() . ' failed: ' . $e->getMessage());
+		}
 
 		try {
 			$folders = $this->folderMapper->getFolders($account, $client);
@@ -125,6 +138,16 @@ private function persist(Account $account, array $folders, array $existing): voi
 		$this->mailAccountMapper->update($account->getMailAccount());
 	}
 
+	private function getPersonalNamespace(Horde_Imap_Client_Namespace_List $namespaces): ?string {
+		foreach ($namespaces as $namespace) {
+			/** @var Horde_Imap_Client_Data_Namespace $namespace */
+			if ($namespace->type === Horde_Imap_Client::NS_PERSONAL) {
+				return $namespace->name;
+			}
+		}
+		return null;
+	}
+
 	private function updateMailboxFromFolder(Folder $folder, Mailbox $mailbox): void {
 		$mailbox->setDelimiter($folder->getDelimiter());
 		$mailbox->setAttributes(json_encode($folder->getAttributes()));

lib/Migration/Version1050Date20200831124954.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Mail\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+class Version1050Date20200831124954 extends SimpleMigrationStep {
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		$accountsTable = $schema->getTable('mail_accounts');
+		$accountsTable->addColumn('personal_namespace', 'string', [
+			'notnull' => false,
+		]);
+
+		return $schema;
+	}
+}

src/components/NavigationMailbox.vue

@@ -70,7 +70,7 @@
 					@click="clearCache">
 					{{ t('mail', 'Clear locally cached data, in case there are issues with synchronization.') }}
 				</ActionButton>
-				<ActionButton v-if="!account.isUnified && !mailbox.specialRole" icon="icon-delete" @click="deleteMailbox">
+				<ActionButton v-if="!account.isUnified && !mailbox.specialRole && !hasSubMailboxes" icon="icon-delete" @click="deleteMailbox">
 					{{ t('mail', 'Delete folder') }}
 				</ActionButton>
 			</template>
@@ -176,6 +176,9 @@ export default {
 				},
 			}
 		},
+		hasSubMailboxes() {
+			return this.subMailboxes.length > 0
+		},
 		subMailboxes() {
 			return this.$store.getters.getSubMailboxes(this.mailbox.databaseId)
 		},

src/store/actions.js

@@ -156,10 +156,14 @@ export default {
 		commit('removeMailbox', { id: mailbox.databaseId })
 	},
 	async createMailbox({ commit }, { account, name }) {
-		const mailbox = await createMailbox(account.id, name)
-		console.debug(`mailbox ${name} created for account ${account.id}`, { mailbox })
+		const prefixed = (account.personalNamespace && !name.startsWith(account.personalNamespace))
+			? account.personalNamespace + name
+			: name
+		const mailbox = await createMailbox(account.id, prefixed)
+		console.debug(`mailbox ${prefixed} created for account ${account.id}`, { mailbox })
 		commit('addMailbox', { account, mailbox })
 		commit('expandAccount', account.id)
+		return mailbox
 	},
 	moveAccount({ commit, getters }, { account, up }) {
 		const accounts = getters.accounts

src/store/getters.js

@@ -42,7 +42,6 @@ export const getters = {
 	},
 	getSubMailboxes: (state, getters) => (id) => {
 		const mailbox = getters.getMailbox(id)
-
 		return mailbox.mailboxes.map((id) => state.mailboxes[id])
 	},
 	getUnifiedMailbox: (state) => (specialRole) => {

src/store/index.js

@@ -57,23 +57,27 @@ export default new Vuex.Store({
 				accountId: 0,
 				attributes: ['\\subscribed'],
 				isUnified: true,
+				path: '',
 				specialUse: ['inbox'],
 				specialRole: 'inbox',
 				unread: 0,
 				mailboxes: [],
 				envelopeLists: {},
+				name: 'UNIFIED INBOX',
 			},
 			[PRIORITY_INBOX_ID]: {
 				id: PRIORITY_INBOX_ID,
 				databaseId: PRIORITY_INBOX_ID,
 				accountId: 0,
 				attributes: ['\\subscribed'],
 				isPriorityInbox: true,
+				path: '',
 				specialUse: ['inbox'],
 				specialRole: 'inbox',
 				unread: 0,
 				mailboxes: [],
 				envelopeLists: {},
+				name: 'PRIORITY INBOX',
 			},
 		},
 		envelopes: {},