damus

commit df3b94a1fc53226726f07b4ef51427781036e329
parent 06a66a3709d9deb69c6a0d1da1185cb5d3abeee3
Author: William Casarin <jb55@jb55.com>
Date:   Sun, 30 Jul 2023 10:47:53 -0700

notify: add typesafe notify class

Diffstat:
M
damus.xcodeproj/project.pbxproj
 | 
12
++++++++++++
A
damus/Notify/Notify.swift
 | 
44
++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/damus.xcodeproj/project.pbxproj b/damus.xcodeproj/project.pbxproj
@@ -202,6 +202,7 @@
 		4C9F18E229AA9B6C008C55EC /* CustomizeZapView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C9F18E129AA9B6C008C55EC /* CustomizeZapView.swift */; };
 		4C9F18E429ABDE6D008C55EC /* MaybeAnonPfpView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C9F18E329ABDE6D008C55EC /* MaybeAnonPfpView.swift */; };
 		4CA2EFA0280E37AC0044ACD8 /* TimelineView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CA2EF9F280E37AC0044ACD8 /* TimelineView.swift */; };
+		4CA352A02A76AE80003BB08B /* Notify.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CA3529F2A76AE80003BB08B /* Notify.swift */; };
 		4CA352A62A76B020003BB08B /* Pubkey.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CA352A52A76B020003BB08B /* Pubkey.swift */; };
 		4CA3FA1029F593D000FDB3C3 /* ZapTypePicker.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CA3FA0F29F593D000FDB3C3 /* ZapTypePicker.swift */; };
 		4CA5588329F33F5B00DC6A45 /* StringCodable.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CA5588229F33F5B00DC6A45 /* StringCodable.swift */; };
@@ -704,6 +705,7 @@
 		4C9F18E129AA9B6C008C55EC /* CustomizeZapView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CustomizeZapView.swift; sourceTree = "<group>"; };
 		4C9F18E329ABDE6D008C55EC /* MaybeAnonPfpView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MaybeAnonPfpView.swift; sourceTree = "<group>"; };
 		4CA2EF9F280E37AC0044ACD8 /* TimelineView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineView.swift; sourceTree = "<group>"; };
+		4CA3529F2A76AE80003BB08B /* Notify.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Notify.swift; sourceTree = "<group>"; };
 		4CA352A52A76B020003BB08B /* Pubkey.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Pubkey.swift; sourceTree = "<group>"; };
 		4CA3FA0F29F593D000FDB3C3 /* ZapTypePicker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ZapTypePicker.swift; sourceTree = "<group>"; };
 		4CA5588229F33F5B00DC6A45 /* StringCodable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StringCodable.swift; sourceTree = "<group>"; };
@@ -1377,6 +1379,14 @@
 			path = Util;
 			sourceTree = "<group>";
 		};
+		4CA3529C2A76AE47003BB08B /* Notify */ = {
+			isa = PBXGroup;
+			children = (
+				4CA3529F2A76AE80003BB08B /* Notify.swift */,
+			);
+			path = Notify;
+			sourceTree = "<group>";
+		};
 		4CA9275B2A28FF570098A105 /* Longform */ = {
 			isa = PBXGroup;
 			children = (
@@ -1552,6 +1562,7 @@
 		4CE6DEE527F7A08100C66700 /* damus */ = {
 			isa = PBXGroup;
 			children = (
+				4CA3529C2A76AE47003BB08B /* Notify */,
 				F7F0BA23297892AE009531F3 /* Modifiers */,
 				4C4A3A5A288A1B2200453788 /* damus.entitlements */,
 				4CE4F9DF285287A000C00DD9 /* Components */,
@@ -2172,6 +2183,7 @@
 				4C3BEFD42819DE8F00B3DE84 /* NostrKind.swift in Sources */,
 				4C3EA66028FF5E7700C48A62 /* node_id.c in Sources */,
 				4C687C212A5F7ED00092C550 /* DamusBackground.swift in Sources */,
+				4CA352A02A76AE80003BB08B /* Notify.swift in Sources */,
 				4CE6DEE727F7A08100C66700 /* damusApp.swift in Sources */,
 				4C363A962827096D006E126D /* PostBlock.swift in Sources */,
 				4CA9275F2A2902B20098A105 /* LongformPreview.swift in Sources */,
diff --git a/damus/Notify/Notify.swift b/damus/Notify/Notify.swift
@@ -0,0 +1,44 @@
+//
+//  Notify.swift
+//  damus
+//
+//  Created by William Casarin on 2023-07-30.
+//
+
+import Foundation
+import Combine
+
+protocol Notify {
+    associatedtype Payload
+    static var name: Notification.Name { get }
+    var payload: Payload { get }
+}
+
+extension Notify {
+    static var name: Notification.Name {
+        Notification.Name("\(Self.self)")
+    }
+}
+
+// needed because static dispatch off protocol extensions doesn't work so well
+struct Notifications<T: Notify> {
+    let notify: T
+
+    init(_ notify: T) {
+        self.notify = notify
+    }
+}
+
+struct NotifyHandler<T> { }
+
+func notify_safe<T: Notify>(_ notify: Notifications<T>) {
+    let notify = notify.notify
+    NotificationCenter.default.post(name: T.name, object: notify.payload)
+}
+
+func handle_notify_safe<T: Notify>(_ handler: NotifyHandler<T>) -> AnyPublisher<T.Payload, Never> {
+    return NotificationCenter.default.publisher(for: T.name)
+        //.compactMap { notification in notification.object as? T.Payload }
+        .map { notification in notification.object as! T.Payload }
+        .eraseToAnyPublisher()
+}