reorganize

Signed-off-by: William Casarin <jb55@jb55.com>

damus.xcodeproj/project.pbxproj

@@ -9,6 +9,13 @@
 /* Begin PBXBuildFile section */
 		4C75EFA427FA577B0006080F /* PostView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFA327FA577B0006080F /* PostView.swift */; };
 		4C75EFA627FF87A20006080F /* Nostr.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFA527FF87A20006080F /* Nostr.swift */; };
+		4C75EFAA28049C9F0006080F /* CachedAsyncImage in Frameworks */ = {isa = PBXBuildFile; productRef = 4C75EFA928049C9F0006080F /* CachedAsyncImage */; };
+		4C75EFAD28049CFB0006080F /* PostButton.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFAC28049CFB0006080F /* PostButton.swift */; };
+		4C75EFAF28049D350006080F /* NostrFilter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFAE28049D340006080F /* NostrFilter.swift */; };
+		4C75EFB128049D510006080F /* NostrResponse.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFB028049D510006080F /* NostrResponse.swift */; };
+		4C75EFB328049D640006080F /* NostrEvent.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFB228049D640006080F /* NostrEvent.swift */; };
+		4C75EFB528049D790006080F /* Relay.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFB428049D790006080F /* Relay.swift */; };
+		4C75EFB728049D990006080F /* RelayPool.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C75EFB628049D990006080F /* RelayPool.swift */; };
 		4CE6DEE727F7A08100C66700 /* damusApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CE6DEE627F7A08100C66700 /* damusApp.swift */; };
 		4CE6DEE927F7A08100C66700 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4CE6DEE827F7A08100C66700 /* ContentView.swift */; };
 		4CE6DEEB27F7A08200C66700 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 4CE6DEEA27F7A08200C66700 /* Assets.xcassets */; };
@@ -41,6 +48,12 @@
 		4C75EFA327FA577B0006080F /* PostView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PostView.swift; sourceTree = "<group>"; };
 		4C75EFA527FF87A20006080F /* Nostr.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Nostr.swift; sourceTree = "<group>"; };
 		4C75EFA72804823E0006080F /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
+		4C75EFAC28049CFB0006080F /* PostButton.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PostButton.swift; sourceTree = "<group>"; };
+		4C75EFAE28049D340006080F /* NostrFilter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NostrFilter.swift; sourceTree = "<group>"; };
+		4C75EFB028049D510006080F /* NostrResponse.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NostrResponse.swift; sourceTree = "<group>"; };
+		4C75EFB228049D640006080F /* NostrEvent.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NostrEvent.swift; sourceTree = "<group>"; };
+		4C75EFB428049D790006080F /* Relay.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Relay.swift; sourceTree = "<group>"; };
+		4C75EFB628049D990006080F /* RelayPool.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RelayPool.swift; sourceTree = "<group>"; };
 		4CE6DEE327F7A08100C66700 /* damus.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = damus.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		4CE6DEE627F7A08100C66700 /* damusApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = damusApp.swift; sourceTree = "<group>"; };
 		4CE6DEE827F7A08100C66700 /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
@@ -60,6 +73,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				4CE6DF1227F7A2B300C66700 /* Starscream in Frameworks */,
+				4C75EFAA28049C9F0006080F /* CachedAsyncImage in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -84,10 +98,25 @@
 			isa = PBXGroup;
 			children = (
 				4C75EFA327FA577B0006080F /* PostView.swift */,
+				4C75EFAC28049CFB0006080F /* PostButton.swift */,
 			);
 			path = Views;
 			sourceTree = "<group>";
 		};
+		4C75EFAB28049CC80006080F /* Nostr */ = {
+			isa = PBXGroup;
+			children = (
+				4CE6DF1527F8DEBF00C66700 /* RelayConnection.swift */,
+				4C75EFA527FF87A20006080F /* Nostr.swift */,
+				4C75EFAE28049D340006080F /* NostrFilter.swift */,
+				4C75EFB028049D510006080F /* NostrResponse.swift */,
+				4C75EFB228049D640006080F /* NostrEvent.swift */,
+				4C75EFB428049D790006080F /* Relay.swift */,
+				4C75EFB628049D990006080F /* RelayPool.swift */,
+			);
+			path = Nostr;
+			sourceTree = "<group>";
+		};
 		4CE6DEDA27F7A08100C66700 = {
 			isa = PBXGroup;
 			children = (
@@ -111,14 +140,13 @@
 		4CE6DEE527F7A08100C66700 /* damus */ = {
 			isa = PBXGroup;
 			children = (
+				4C75EFAB28049CC80006080F /* Nostr */,
 				4C75EFA72804823E0006080F /* Info.plist */,
 				4C75EFA227FA576C0006080F /* Views */,
 				4CE6DEE627F7A08100C66700 /* damusApp.swift */,
 				4CE6DEE827F7A08100C66700 /* ContentView.swift */,
 				4CE6DEEA27F7A08200C66700 /* Assets.xcassets */,
 				4CE6DEEC27F7A08200C66700 /* Preview Content */,
-				4CE6DF1527F8DEBF00C66700 /* RelayConnection.swift */,
-				4C75EFA527FF87A20006080F /* Nostr.swift */,
 			);
 			path = damus;
 			sourceTree = "<group>";
@@ -166,6 +194,7 @@
 			name = damus;
 			packageProductDependencies = (
 				4CE6DF1127F7A2B300C66700 /* Starscream */,
+				4C75EFA928049C9F0006080F /* CachedAsyncImage */,
 			);
 			productName = damus;
 			productReference = 4CE6DEE327F7A08100C66700 /* damus.app */;
@@ -241,6 +270,7 @@
 			mainGroup = 4CE6DEDA27F7A08100C66700;
 			packageReferences = (
 				4CE6DF1027F7A2B300C66700 /* XCRemoteSwiftPackageReference "Starscream" */,
+				4C75EFA828049C9F0006080F /* XCRemoteSwiftPackageReference "swiftui-cached-async-image" */,
 			);
 			productRefGroup = 4CE6DEE427F7A08100C66700 /* Products */;
 			projectDirPath = "";
@@ -284,11 +314,17 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				4C75EFB728049D990006080F /* RelayPool.swift in Sources */,
 				4CE6DEE927F7A08100C66700 /* ContentView.swift in Sources */,
+				4C75EFAD28049CFB0006080F /* PostButton.swift in Sources */,
 				4C75EFA627FF87A20006080F /* Nostr.swift in Sources */,
+				4C75EFB328049D640006080F /* NostrEvent.swift in Sources */,
+				4C75EFB128049D510006080F /* NostrResponse.swift in Sources */,
+				4C75EFAF28049D350006080F /* NostrFilter.swift in Sources */,
 				4CE6DF1627F8DEBF00C66700 /* RelayConnection.swift in Sources */,
 				4CE6DEE727F7A08100C66700 /* damusApp.swift in Sources */,
 				4C75EFA427FA577B0006080F /* PostView.swift in Sources */,
+				4C75EFB528049D790006080F /* Relay.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -619,6 +655,14 @@
 /* End XCConfigurationList section */
 
 /* Begin XCRemoteSwiftPackageReference section */
+		4C75EFA828049C9F0006080F /* XCRemoteSwiftPackageReference "swiftui-cached-async-image" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/lorenzofiamingo/swiftui-cached-async-image";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 2.0.0;
+			};
+		};
 		4CE6DF1027F7A2B300C66700 /* XCRemoteSwiftPackageReference "Starscream" */ = {
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/daltoniam/Starscream";
@@ -630,6 +674,11 @@
 /* End XCRemoteSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
+		4C75EFA928049C9F0006080F /* CachedAsyncImage */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 4C75EFA828049C9F0006080F /* XCRemoteSwiftPackageReference "swiftui-cached-async-image" */;
+			productName = CachedAsyncImage;
+		};
 		4CE6DF1127F7A2B300C66700 /* Starscream */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = 4CE6DF1027F7A2B300C66700 /* XCRemoteSwiftPackageReference "Starscream" */;

damus.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -8,6 +8,15 @@
         "revision" : "df8d82047f6654d8e4b655d1b1525c64e1059d21",
         "version" : "4.0.4"
       }
+    },
+    {
+      "identity" : "swiftui-cached-async-image",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/lorenzofiamingo/swiftui-cached-async-image",
+      "state" : {
+        "revision" : "eeb1565d780d1b75d045e21b5ca2a1e3650b0fc2",
+        "version" : "2.1.0"
+      }
     }
   ],
   "version" : 2

damus/ContentView.swift

@@ -64,11 +64,6 @@ enum Sheets: Identifiable {
     }
 }
 
-enum NostrKind: Int {
-    case metadata = 0
-    case text = 1
-}
-
 struct ContentView: View {
     @State var status: String = "Not connected"
     @State var sub_id: String? = nil
@@ -228,22 +223,6 @@ struct ContentView_Previews: PreviewProvider {
     }
 }
 
-func PostButton(action: @escaping () -> ()) -> some View {
-    return Button(action: action, label: {
-        Text("+")
-            .font(.system(.largeTitle))
-            .frame(width: 57, height: 50)
-            .foregroundColor(Color.white)
-            .padding(.bottom, 7)
-    })
-    .background(Color.blue)
-    .cornerRadius(38.5)
-    .padding()
-    .shadow(color: Color.black.opacity(0.3),
-            radius: 3,
-            x: 3,
-            y: 3)
-}
 
 
 func get_metadata_since_time(_ metadata_event: NostrEvent?) -> Int64? {
@@ -281,7 +260,3 @@ func get_profiles()
 
 */
 
-func add_rw_relay(_ pool: RelayPool, _ url: String) {
-    let url_ = URL(string: url)!
-    try! pool.add_relay(url_, info: RelayInfo.rw)
-}

damus/Nostr.swift

@@ -1,17 +0,0 @@
-//
-//  Nostr.swift
-//  damus
-//
-//  Created by William Casarin on 2022-04-07.
-//
-
-import Foundation
-
-
-struct Profile: Decodable {
-    let name: String?
-    let about: String?
-    let picture: String?
-}
-
-

damus/Nostr/Nostr.swift

@@ -0,0 +1,33 @@
+//
+//  Nostr.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-07.
+//
+
+import Foundation
+
+
+struct Profile: Decodable {
+    let name: String?
+    let about: String?
+    let picture: String?
+}
+
+enum NostrKind: Int {
+    case metadata = 0
+    case text = 1
+}
+
+enum NostrTag {
+    case other_event(OtherEvent)
+    case key_event(KeyEvent)
+}
+
+struct NostrSubscription {
+    let sub_id: String
+    let filter: NostrFilter
+}
+
+
+

damus/Nostr/NostrEvent.swift

@@ -0,0 +1,43 @@
+//
+//  NostrEvent.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-11.
+//
+
+import Foundation
+
+struct OtherEvent {
+    let event_id: String
+    let relay_url: String
+}
+
+struct KeyEvent {
+    let key: String
+    let relay_url: String
+}
+
+struct NostrEvent: Decodable, Identifiable {
+    let id: String
+    let pubkey: String
+    let created_at: Int64
+    let kind: Int
+    let tags: [[String]]
+    let content: String
+    let sig: String
+}
+
+func decode_nostr_event(txt: String) -> NostrResponse? {
+    return decode_data(Data(txt.utf8))
+}
+
+func decode_data<T: Decodable>(_ data: Data) -> T? {
+    let decoder = JSONDecoder()
+    do {
+        return try decoder.decode(T.self, from: data)
+    } catch {
+        print("decode_data failed for \(T.self): \(error)")
+    }
+
+    return nil
+}

damus/Nostr/NostrFilter.swift

@@ -0,0 +1,40 @@
+//
+//  NostrFilter.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-11.
+//
+
+import Foundation
+
+struct NostrFilter: Codable {
+    var ids: [String]?
+    var kinds: [Int]?
+    var referenced_ids: [String]?
+    var pubkeys: [String]?
+    var since: Int64?
+    var until: Int64?
+    var authors: [String]?
+
+    private enum CodingKeys : String, CodingKey {
+        case ids
+        case kinds
+        case referenced_ids = "#e"
+        case pubkeys = "#p"
+        case since
+        case until
+        case authors
+    }
+
+    public static var filter_text: NostrFilter {
+        NostrFilter(ids: nil, kinds: [1], referenced_ids: nil, pubkeys: nil, since: nil, until: nil, authors: nil)
+    }
+
+    public static var filter_profiles: NostrFilter {
+        return NostrFilter(ids: nil, kinds: [0], referenced_ids: nil, pubkeys: nil, since: nil, until: nil, authors: nil)
+    }
+
+    public static func filter_since(_ val: Int64) -> NostrFilter {
+        return NostrFilter(ids: nil, kinds: nil, referenced_ids: nil, pubkeys: nil, since: val, until: nil, authors: nil)
+    }
+}

damus/Nostr/NostrResponse.swift

@@ -0,0 +1,39 @@
+//
+//  NostrResponse.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-11.
+//
+
+import Foundation
+
+enum NostrResponse: Decodable {
+    case event(String, NostrEvent)
+    case notice(String)
+
+    init(from decoder: Decoder) throws {
+        var container = try decoder.unkeyedContainer()
+
+        // Only use first item
+        let typ = try container.decode(String.self)
+        if typ == "EVENT" {
+            let sub_id = try container.decode(String.self)
+            var ev: NostrEvent
+            do {
+                ev = try container.decode(NostrEvent.self)
+            } catch {
+                print(error)
+                throw error
+            }
+            self = .event(sub_id, ev)
+            return
+        } else if typ == "NOTICE" {
+            let msg = try container.decode(String.self)
+            self = .notice(msg)
+            return
+        }
+
+        throw DecodingError.dataCorrupted(.init(codingPath: [], debugDescription: "expected EVENT or NOTICE, got \(typ)"))
+    }
+}
+

damus/Nostr/Relay.swift

@@ -0,0 +1,35 @@
+//
+//  Relay.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-11.
+//
+
+import Foundation
+
+struct RelayInfo {
+    let read: Bool
+    let write: Bool
+
+    static let rw = RelayInfo(read: true, write: true)
+}
+
+struct Relay: Identifiable {
+    let url: URL
+    let info: RelayInfo
+    let connection: RelayConnection
+
+    var id: String {
+        return get_relay_id(url)
+    }
+
+}
+
+enum RelayError: Error {
+    case RelayAlreadyExists
+    case RelayNotFound
+}
+
+func get_relay_id(_ url: URL) -> String {
+    return url.absoluteString
+}

damus/Nostr/RelayConnection.swift

@@ -0,0 +1,89 @@
+//
+//  NostrConnection.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-02.
+//
+
+import Foundation
+import Starscream
+
+enum NostrConnectionEvent {
+    case ws_event(WebSocketEvent)
+    case nostr_event(NostrResponse)
+}
+
+class RelayConnection: WebSocketDelegate {
+    var isConnected: Bool = false
+    var socket: WebSocket
+    var handleEvent: (NostrConnectionEvent) -> ()
+
+    init(url: URL, handleEvent: @escaping (NostrConnectionEvent) -> ()) {
+        var req = URLRequest(url: url)
+        req.timeoutInterval = 5
+        self.socket = WebSocket(request: req)
+        self.handleEvent = handleEvent
+
+        socket.delegate = self
+    }
+
+    func connect(){
+        socket.connect()
+    }
+
+    func disconnect() {
+        socket.disconnect()
+    }
+
+    func send(_ filters: [NostrFilter], sub_id: String) {
+        guard let req = make_nostr_req(filters, sub_id: sub_id) else {
+            print("failed to encode nostr req: \(filters)")
+            return
+        }
+        socket.write(string: req)
+    }
+
+    func didReceive(event: WebSocketEvent, client: WebSocket) {
+        switch event {
+        case .connected:
+            self.isConnected = true
+
+        case .disconnected: fallthrough
+        case .cancelled: fallthrough
+        case .error:
+            self.isConnected = false
+
+        case .text(let txt):
+            if let ev = decode_nostr_event(txt: txt) {
+                handleEvent(.nostr_event(ev))
+                return
+            }
+
+            print("decode failed for \(txt)")
+            // TODO: trigger event error
+
+        default:
+            break
+        }
+
+        handleEvent(.ws_event(event))
+    }
+
+}
+
+func make_nostr_req(_ filters: [NostrFilter], sub_id: String) -> String? {
+    let encoder = JSONEncoder()
+    var req = "[\"REQ\",\"\(sub_id)\""
+    for filter in filters {
+        req += ","
+        guard let filter_json = try? encoder.encode(filter) else {
+            return nil
+        }
+        let filter_json_str = String(decoding: filter_json, as: UTF8.self)
+        req += filter_json_str
+    }
+    req += "]"
+    print("req: \(req)")
+    return req
+}
+

damus/Nostr/RelayPool.swift

@@ -0,0 +1,79 @@
+//
+//  RelayPool.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-11.
+//
+
+import Foundation
+
+class RelayPool {
+    var relays: [Relay] = []
+    let custom_handle_event: (String, NostrConnectionEvent) -> ()
+
+    init(handle_event: @escaping (String, NostrConnectionEvent) -> ()) {
+        self.custom_handle_event = handle_event
+    }
+
+    func add_relay(_ url: URL, info: RelayInfo) throws {
+        let relay_id = get_relay_id(url)
+        if get_relay(relay_id) != nil {
+            throw RelayError.RelayAlreadyExists
+        }
+        let conn = RelayConnection(url: url) { event in
+            self.handle_event(relay_id: relay_id, event: event)
+        }
+        let relay = Relay(url: url, info: info, connection: conn)
+        self.relays.append(relay)
+    }
+
+    func connect(to: [String]? = nil) {
+        let relays = to.map{ get_relays($0) } ?? self.relays
+        for relay in relays {
+            relay.connection.connect()
+        }
+    }
+
+    func send(filters: [NostrFilter], sub_id: String, to: [String]? = nil) {
+        let relays = to.map{ get_relays($0) } ?? self.relays
+
+        for relay in relays {
+            if relay.connection.isConnected {
+                relay.connection.send(filters, sub_id: sub_id)
+            }
+        }
+    }
+
+    func get_relays(_ ids: [String]) -> [Relay] {
+        var relays: [Relay] = []
+
+        for id in ids {
+            if let relay = get_relay(id) {
+                relays.append(relay)
+            }
+        }
+
+        return relays
+    }
+
+    func get_relay(_ id: String) -> Relay? {
+        for relay in relays {
+            if relay.id == id {
+                return relay
+            }
+        }
+
+        return nil
+    }
+
+    func handle_event(relay_id: String, event: NostrConnectionEvent) {
+        // handle reconnect logic, etc?
+        custom_handle_event(relay_id, event)
+    }
+}
+
+func add_rw_relay(_ pool: RelayPool, _ url: String) {
+    let url_ = URL(string: url)!
+    try! pool.add_relay(url_, info: RelayInfo.rw)
+}
+

damus/RelayConnection.swift

@@ -1,288 +0,0 @@
-//
-//  NostrConnection.swift
-//  damus
-//
-//  Created by William Casarin on 2022-04-02.
-//
-
-import Foundation
-import Starscream
-
-struct OtherEvent {
-    let event_id: String
-    let relay_url: String
-}
-
-struct KeyEvent {
-    let key: String
-    let relay_url: String
-}
-
-enum NostrConnectionEvent {
-    case ws_event(WebSocketEvent)
-    case nostr_event(NostrResponse)
-}
-
-enum NostrTag {
-    case other_event(OtherEvent)
-    case key_event(KeyEvent)
-}
-
-struct NostrSubscription {
-    let sub_id: String
-    let filter: NostrFilter
-}
-
-struct NostrFilter: Codable {
-    var ids: [String]?
-    var kinds: [Int]?
-    var referenced_ids: [String]?
-    var pubkeys: [String]?
-    var since: Int64?
-    var until: Int64?
-    var authors: [String]?
-
-    private enum CodingKeys : String, CodingKey {
-        case ids
-        case kinds
-        case referenced_ids = "#e"
-        case pubkeys = "#p"
-        case since
-        case until
-        case authors
-    }
-
-    public static var filter_text: NostrFilter {
-        NostrFilter(ids: nil, kinds: [1], referenced_ids: nil, pubkeys: nil, since: nil, until: nil, authors: nil)
-    }
-
-    public static var filter_profiles: NostrFilter {
-        return NostrFilter(ids: nil, kinds: [0], referenced_ids: nil, pubkeys: nil, since: nil, until: nil, authors: nil)
-    }
-
-    public static func filter_since(_ val: Int64) -> NostrFilter {
-        return NostrFilter(ids: nil, kinds: nil, referenced_ids: nil, pubkeys: nil, since: val, until: nil, authors: nil)
-    }
-}
-
-enum NostrResponse: Decodable {
-    case event(String, NostrEvent)
-    case notice(String)
-
-    init(from decoder: Decoder) throws {
-        var container = try decoder.unkeyedContainer()
-
-        // Only use first item
-        let typ = try container.decode(String.self)
-        if typ == "EVENT" {
-            let sub_id = try container.decode(String.self)
-            var ev: NostrEvent
-            do {
-                ev = try container.decode(NostrEvent.self)
-            } catch {
-                print(error)
-                throw error
-            }
-            self = .event(sub_id, ev)
-            return
-        } else if typ == "NOTICE" {
-            let msg = try container.decode(String.self)
-            self = .notice(msg)
-            return
-        }
-
-        throw DecodingError.dataCorrupted(.init(codingPath: [], debugDescription: "expected EVENT or NOTICE, got \(typ)"))
-    }
-}
-
-struct NostrEvent: Decodable, Identifiable {
-    let id: String
-    let pubkey: String
-    let created_at: Int64
-    let kind: Int
-    let tags: [[String]]
-    let content: String
-    let sig: String
-}
-
-struct RelayInfo {
-    let read: Bool
-    let write: Bool
-
-    static let rw = RelayInfo(read: true, write: true)
-}
-
-struct Relay: Identifiable {
-    let url: URL
-    let info: RelayInfo
-    let connection: RelayConnection
-
-    var id: String {
-        return get_relay_id(url)
-    }
-
-}
-
-func get_relay_id(_ url: URL) -> String {
-    return url.absoluteString
-}
-
-enum RelayError: Error {
-    case RelayAlreadyExists
-    case RelayNotFound
-}
-
-class RelayPool {
-    var relays: [Relay] = []
-    let custom_handle_event: (String, NostrConnectionEvent) -> ()
-
-    init(handle_event: @escaping (String, NostrConnectionEvent) -> ()) {
-        self.custom_handle_event = handle_event
-    }
-
-    func add_relay(_ url: URL, info: RelayInfo) throws {
-        let relay_id = get_relay_id(url)
-        if get_relay(relay_id) != nil {
-            throw RelayError.RelayAlreadyExists
-        }
-        let conn = RelayConnection(url: url) { event in
-            self.handle_event(relay_id: relay_id, event: event)
-        }
-        let relay = Relay(url: url, info: info, connection: conn)
-        self.relays.append(relay)
-    }
-
-    func connect(to: [String]? = nil) {
-        let relays = to.map{ get_relays($0) } ?? self.relays
-        for relay in relays {
-            relay.connection.connect()
-        }
-    }
-
-    func send(filters: [NostrFilter], sub_id: String, to: [String]? = nil) {
-        let relays = to.map{ get_relays($0) } ?? self.relays
-
-        for relay in relays {
-            if relay.connection.isConnected {
-                relay.connection.send(filters, sub_id: sub_id)
-            }
-        }
-    }
-
-    func get_relays(_ ids: [String]) -> [Relay] {
-        var relays: [Relay] = []
-
-        for id in ids {
-            if let relay = get_relay(id) {
-                relays.append(relay)
-            }
-        }
-
-        return relays
-    }
-
-    func get_relay(_ id: String) -> Relay? {
-        for relay in relays {
-            if relay.id == id {
-                return relay
-            }
-        }
-
-        return nil
-    }
-
-    func handle_event(relay_id: String, event: NostrConnectionEvent) {
-        // handle reconnect logic, etc?
-        custom_handle_event(relay_id, event)
-    }
-}
-
-class RelayConnection: WebSocketDelegate {
-    var isConnected: Bool = false
-    var socket: WebSocket
-    var handleEvent: (NostrConnectionEvent) -> ()
-
-    init(url: URL, handleEvent: @escaping (NostrConnectionEvent) -> ()) {
-        var req = URLRequest(url: url)
-        req.timeoutInterval = 5
-        self.socket = WebSocket(request: req)
-        self.handleEvent = handleEvent
-
-        socket.delegate = self
-    }
-
-    func connect(){
-        socket.connect()
-    }
-
-    func disconnect() {
-        socket.disconnect()
-    }
-
-    func send(_ filters: [NostrFilter], sub_id: String) {
-        guard let req = make_nostr_req(filters, sub_id: sub_id) else {
-            print("failed to encode nostr req: \(filters)")
-            return
-        }
-        socket.write(string: req)
-    }
-
-    func didReceive(event: WebSocketEvent, client: WebSocket) {
-        switch event {
-        case .connected:
-            self.isConnected = true
-
-        case .disconnected: fallthrough
-        case .cancelled: fallthrough
-        case .error:
-            self.isConnected = false
-
-        case .text(let txt):
-            if let ev = decode_nostr_event(txt: txt) {
-                handleEvent(.nostr_event(ev))
-                return
-            }
-
-            print("decode failed for \(txt)")
-            // TODO: trigger event error
-
-        default:
-            break
-        }
-
-        handleEvent(.ws_event(event))
-    }
-
-}
-
-func decode_nostr_event(txt: String) -> NostrResponse? {
-    return decode_data(Data(txt.utf8))
-}
-
-func decode_data<T: Decodable>(_ data: Data) -> T? {
-    let decoder = JSONDecoder()
-    do {
-        return try decoder.decode(T.self, from: data)
-    } catch {
-        print("decode_data failed for \(T.self): \(error)")
-    }
-
-    return nil
-}
-
-func make_nostr_req(_ filters: [NostrFilter], sub_id: String) -> String? {
-    let encoder = JSONEncoder()
-    var req = "[\"REQ\",\"\(sub_id)\""
-    for filter in filters {
-        req += ","
-        guard let filter_json = try? encoder.encode(filter) else {
-            return nil
-        }
-        let filter_json_str = String(decoding: filter_json, as: UTF8.self)
-        req += filter_json_str
-    }
-    req += "]"
-    print("req: \(req)")
-    return req
-}
-

damus/Views/PostButton.swift

@@ -0,0 +1,26 @@
+//
+//  PostButton.swift
+//  damus
+//
+//  Created by William Casarin on 2022-04-11.
+//
+
+import Foundation
+import SwiftUI
+
+func PostButton(action: @escaping () -> ()) -> some View {
+    return Button(action: action, label: {
+        Text("+")
+            .font(.system(.largeTitle))
+            .frame(width: 57, height: 50)
+            .foregroundColor(Color.white)
+            .padding(.bottom, 7)
+    })
+    .background(Color.blue)
+    .cornerRadius(38.5)
+    .padding()
+    .shadow(color: Color.black.opacity(0.3),
+            radius: 3,
+            x: 3,
+            y: 3)
+}