From 9c740a4c4d6e7bb6f39d4aad085f7664fee97d65 Mon Sep 17 00:00:00 2001
From: Tom Hacohen <tom@stosb.com>
Date: Sat, 30 Dec 2017 15:58:46 +0000
Subject: [PATCH] Add support for saving entries to shared journals.

---
 src/Pim/index.tsx      |  9 ++++++---
 src/SyncGate.tsx       |  1 +
 src/etesync-helpers.ts | 13 +++++++++++--
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/src/Pim/index.tsx b/src/Pim/index.tsx
index f68dc3c..dcb08c5 100644
--- a/src/Pim/index.tsx
+++ b/src/Pim/index.tsx
@@ -26,7 +26,7 @@ import PimMain from './PimMain';
 
 import { routeResolver } from '../App';
 
-import { store, CredentialsData } from '../store';
+import { store, CredentialsData, UserInfoData } from '../store';
 
 import { SyncInfo } from '../SyncGate';
 
@@ -193,6 +193,7 @@ const CollectionRoutes = withRouter(
 class Pim extends React.PureComponent {
   props: {
     etesync: CredentialsData;
+    userInfo: UserInfoData;
     syncInfo: SyncInfo;
     history: History;
   };
@@ -215,7 +216,8 @@ class Pim extends React.PureComponent {
 
     let action = (originalEvent === undefined) ? EteSync.SyncEntryAction.Add : EteSync.SyncEntryAction.Change;
     let saveEvent = store.dispatch(
-      createJournalEntry(this.props.etesync, journal, syncJournal.journalEntries, action, item.toIcal()));
+      createJournalEntry(
+        this.props.etesync, this.props.userInfo, journal, syncJournal.journalEntries, action, item.toIcal()));
     (saveEvent as any).then(() => {
       this.props.history.goBack();
     });
@@ -232,7 +234,8 @@ class Pim extends React.PureComponent {
 
     let action = EteSync.SyncEntryAction.Delete;
     let deleteItem = store.dispatch(
-      createJournalEntry(this.props.etesync, journal, syncJournal.journalEntries, action, item.toIcal()));
+      createJournalEntry(
+        this.props.etesync, this.props.userInfo, journal, syncJournal.journalEntries, action, item.toIcal()));
     (deleteItem as any).then(() => {
       this.props.history.push(routeResolver.getRoute('pim'));
     });
diff --git a/src/SyncGate.tsx b/src/SyncGate.tsx
index 90b1bd7..08e1e02 100644
--- a/src/SyncGate.tsx
+++ b/src/SyncGate.tsx
@@ -157,6 +157,7 @@ class SyncGate extends React.PureComponent {
           render={({match, history}) => (
             <PimRouter
               etesync={this.props.etesync}
+              userInfo={this.props.userInfo.value!}
               syncInfo={journalMap}
               history={history}
             />
diff --git a/src/etesync-helpers.ts b/src/etesync-helpers.ts
index dfb3c9c..c60e879 100644
--- a/src/etesync-helpers.ts
+++ b/src/etesync-helpers.ts
@@ -2,11 +2,12 @@ import { List } from 'immutable';
 
 import * as EteSync from './api/EteSync';
 
-import { CredentialsData } from './store';
+import { CredentialsData, UserInfoData } from './store';
 import { createEntries } from './store/actions';
 
 export function createJournalEntry(
   etesync: CredentialsData,
+  userInfo: UserInfoData,
   journal: EteSync.Journal,
   existingEntries: List<EteSync.Entry>,
   action: EteSync.SyncEntryAction,
@@ -26,7 +27,15 @@ export function createJournalEntry(
     prevUid = last.uid;
   }
 
-  const cryptoManager = new EteSync.CryptoManager(derived, journal.uid, journal.version);
+  let cryptoManager: EteSync.CryptoManager;
+  if (journal.key) {
+    const keyPair = userInfo.getKeyPair(new EteSync.CryptoManager(derived, 'userInfo', userInfo.version));
+    const asymmetricCryptoManager = new EteSync.AsymmetricCryptoManager(keyPair);
+    const derivedJournalKey = asymmetricCryptoManager.decryptBytes(journal.key);
+    cryptoManager = EteSync.CryptoManager.fromDerivedKey(derivedJournalKey, journal.version);
+  } else {
+    cryptoManager = new EteSync.CryptoManager(derived, journal.uid, journal.version);
+  }
   let entry = new EteSync.Entry();
   entry.setSyncEntry(cryptoManager, syncEntry, prevUid);