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handled received delete kind 5 event

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so that the original message is not printed. If the original message was in file, its still not deleted.
This commit is contained in:
Vishal 2022-09-01 05:28:43 +05:30
parent ec83360ce6
commit 69223d407d
3 changed files with 53 additions and 21 deletions
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23
lib/event_ds.dart
View File

@ -182,6 +182,15 @@ String getShaId(String pubkey, int createdAt, String kind, String strTags, Strin
return value.toString();
}
// get printable date from seconds since epoch
String getPrintableDate(int createdAt) {
final df1 = DateFormat('hh:mm a');
final df2 = DateFormat(DateFormat.ABBR_MONTH_DAY);
String strDate = df1.format(DateTime.fromMillisecondsSinceEpoch(createdAt*1000));
strDate += " ${df2.format(DateTime.fromMillisecondsSinceEpoch(createdAt*1000))}";
return strDate;
}
class EventData {
String id;
String pubkey;
@ -195,9 +204,12 @@ class EventData {
String evaluatedContent; // content which has mentions expanded, and which has been translated
Set<String> newLikes; //
List<Contact> contactList = []; // used for kind:3 events, which is contact list event
bool isHidden; // hidden by sending a reaction kind 7 event to this event, by the logged in user
bool isDeleted; // deleted by kind 5 event
String getParent() {
if( eTagsRest.isNotEmpty) {
@ -207,7 +219,7 @@ class EventData {
}
EventData(this.id, this.pubkey, this.createdAt, this.kind, this.content, this.eTagsRest, this.pTags,
this.contactList, this.tags, this.newLikes, {this.isNotification = false, this.evaluatedContent = "", this.isHidden = false});
this.contactList, this.tags, this.newLikes, {this.isNotification = false, this.evaluatedContent = "", this.isHidden = false, this.isDeleted = false});
factory EventData.fromJson(dynamic json) {
List<Contact> contactList = [];
@ -242,7 +254,8 @@ class EventData {
}
}
} else {
if ( json['kind'] == 1 || json['kind'] == 7 || json['kind'] == 42 ) {
int eKind = json['kind'];
if ( eKind == 1 || eKind == 7 || eKind == 42 || eKind == 5) {
for( int i = 0; i < numTags; i++) {
var tag = jsonTags[i];
//stdout.write(tag);
@ -359,11 +372,7 @@ class EventData {
String maxN(String v) => v.length > n? v.substring(0,n) : v.substring(0, v.length);
void printInColor(String s, String commentColor) => stdout.supportsAnsiEscapes ?stdout.write("$commentColor$s$gColorEndMarker"):stdout.write(s);
// TODO do it in one call
final df1 = DateFormat('hh:mm a');
final df2 = DateFormat(DateFormat.ABBR_MONTH_DAY);
String strDate = df1.format(DateTime.fromMillisecondsSinceEpoch(createdAt*1000));
strDate += " ${df2.format(DateTime.fromMillisecondsSinceEpoch(createdAt*1000))}";
String strDate = getPrintableDate(createdAt);
if( createdAt == 0) {
print("debug: createdAt == 0 for event $content");
}

4
lib/settings.dart
View File

@ -115,6 +115,10 @@ int gDifficulty = 0;
const int gNumChannelMessagesToShow = 15;
const int gMaxChannelPagesDisplayed = 50;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////// User interface messages
String gDeletedEventMessage = "This post was deleted by its original writer";
const String gUsage = """$exename version $version
The nostr console client built using dart.

47
lib/tree_ds.dart
View File

@ -275,7 +275,7 @@ class Store {
});
}
static const Set<int> typesInEventMap = {0, 1, 3, 7, 40, 42}; // 0 meta, 1 post, 3 follows list, 7 reactions
static const Set<int> typesInEventMap = {0, 1, 3, 5, 7, 40, 42}; // 0 meta, 1 post, 3 follows list, 7 reactions
static void handleChannelEvents( Map<String, ChatRoom> rooms, Map<String, Tree> tempChildEventsMap, Event ce) {
String eId = ce.eventData.id;
@ -353,6 +353,8 @@ class Store {
}
});
processDeleteEvents(tempChildEventsMap); // handle returned values perhaps later
// once tempChildEventsMap has been created, create connections between them so we get a tree structure from all these events.
List<Tree> topLevelTrees = [];// this will become the children of the main top node. These are events without parents, which are printed at top.
List<String> tempWithoutParent = [];
@ -445,7 +447,7 @@ class Store {
}
}
// only kind 0, 1, 3, 7, 40, 42 events are added to map, return otherwise
// only kind 0, 1, 3, 5( delete), 7, 40, 42 events are added to map, return otherwise
if( !typesInEventMap.contains(newEvent.eventData.kind) ) {
return;
}
@ -863,18 +865,6 @@ class Store {
return strTags;
}
/*
void addChild(Event child) {
Store node;
node = Store(child, [], {}, [], false, {}, {});
children.add(node);
}
void addChildNode(Store node) {
children.add(node);
}
*/
// for any tree node, returns its top most parent
Tree getTopTree(Tree tree) {
while( true) {
@ -965,6 +955,35 @@ class Store {
return totalEvents;
}
static List<String> processDeleteEvents(Map<String, Tree> tempChildEventsMap) {
List<String> deletedEventIds = [];
tempChildEventsMap.forEach((key, tree) {
EventData deleterEvent = tree.event.eventData;
if( deleterEvent.kind == 5) {
deleterEvent.tags.forEach((tag) {
if( tag.length < 2) {
return;
}
if( tag[0] == "e") {
String deletedEventId = tag[1];
// look up that event and ensure its kind 1 etc, and then mark it deleted.
Event? deletedEvent = tempChildEventsMap[deletedEventId]?.event;
if( deletedEvent != null) {
if( deletedEvent.eventData.kind == 1) {
deletedEvent.eventData.isDeleted = true;
deletedEvent.eventData.content = gDeletedEventMessage + " on ${getPrintableDate(deleterEvent.createdAt)}";
deletedEvent.eventData.evaluatedContent = "";
EventData ed = deletedEvent.eventData;
deletedEvent.originalJson = '["EVENT","none",{"id":${ed.id},"pubkey":${ed.pubkey},"createdAt":${ed.createdAt},"kind":1,"tags":[],"sig":"invalid","comment":"deleted"}]';
deletedEventIds.add(deletedEventId);
}
}
}
});
}
});
return deletedEventIds;
} // end processDeleteEvents
} // end Store
void addMessageToChannel(String channelId, String messageId, Map<String, Tree> tempChildEventsMap, var chatRooms) {