mirror of https://github.com/lukechilds/damus.git
William Casarin
3 years ago
12 changed files with 519 additions and 107 deletions
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// |
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// ReplyMap.swift |
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// damus |
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// |
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// Created by William Casarin on 2022-04-19. |
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// |
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import Foundation |
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class ReplyMap { |
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var replies: [String: String] = [:] |
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func lookup(_ id: String) -> String? { |
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return replies[id] |
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} |
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func add(id: String, reply_id: String) { |
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replies[id] = reply_id |
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} |
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} |
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// |
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// ThreadModel.swift |
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// damus |
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// |
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// Created by William Casarin on 2022-04-19. |
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// |
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import Foundation |
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/// manages the lifetime of a thread |
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class ThreadModel: ObservableObject { |
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@Published var event: NostrEvent |
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@Published var events: [NostrEvent] = [] |
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@Published var event_map: [String: Int] = [:] |
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var replies: ReplyMap = ReplyMap() |
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let pool: RelayPool |
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let sub_id = UUID().description |
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init(event: NostrEvent, pool: RelayPool) { |
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self.event = event |
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self.pool = pool |
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add_event(event) |
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} |
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func unsubscribe() { |
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print("unsubscribing from thread \(event.id) with sub_id \(sub_id)") |
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self.pool.remove_handler(sub_id: sub_id) |
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self.pool.send(.unsubscribe(sub_id)) |
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} |
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func subscribe() { |
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var ref_events = NostrFilter.filter_text |
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var events = NostrFilter.filter_text |
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// TODO: add referenced relays |
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ref_events.referenced_ids = event.referenced_ids.map { $0.ref_id } |
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ref_events.referenced_ids!.append(event.id) |
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events.ids = ref_events.referenced_ids! |
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print("subscribing to thread \(event.id) with sub_id \(sub_id)") |
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pool.register_handler(sub_id: sub_id, handler: handle_event) |
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pool.send(.subscribe(.init(filters: [ref_events, events], sub_id: sub_id))) |
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} |
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func lookup(_ event_id: String) -> NostrEvent? { |
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if let i = event_map[event_id] { |
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return events[i] |
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} |
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return nil |
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} |
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func add_event(_ ev: NostrEvent) { |
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if event_map[ev.id] != nil { |
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return |
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} |
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if let reply_id = ev.find_direct_reply() { |
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self.replies.add(id: ev.id, reply_id: reply_id) |
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} |
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self.events.append(ev) |
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self.events = self.events.sorted { $0.created_at < $1.created_at } |
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var i: Int = 0 |
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for ev in events { |
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self.event_map[ev.id] = i |
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i += 1 |
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} |
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} |
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func handle_event(relay_id: String, ev: NostrConnectionEvent) { |
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switch ev { |
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case .ws_event: |
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break |
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case .nostr_event(let res): |
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switch res { |
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case .event(let sub_id, let ev): |
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if sub_id == self.sub_id { |
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add_event(ev) |
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} |
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case .notice(let note): |
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if note.contains("Too many subscription filters") { |
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// TODO: resend filters? |
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pool.reconnect(to: [relay_id]) |
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} |
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break |
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} |
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} |
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} |
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} |
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@ -0,0 +1,151 @@ |
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// |
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// ChatView.swift |
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// damus |
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// |
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// Created by William Casarin on 2022-04-19. |
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// |
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import SwiftUI |
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struct ChatView: View { |
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let event: NostrEvent |
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let prev_ev: NostrEvent? |
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let next_ev: NostrEvent? |
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@EnvironmentObject var profiles: Profiles |
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@EnvironmentObject var thread: ThreadModel |
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var just_started: Bool { |
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return prev_ev == nil || prev_ev!.pubkey != event.pubkey |
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} |
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var is_active: Bool { |
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thread.event.id == event.id |
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} |
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func prev_reply_is_same() -> String? { |
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if let prev = prev_ev { |
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if let prev_reply_id = thread.replies.lookup(prev.id) { |
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if let cur_reply_id = thread.replies.lookup(event.id) { |
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if prev_reply_id != cur_reply_id { |
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return cur_reply_id |
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} |
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} |
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} |
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} |
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return nil |
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} |
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func reply_is_new() -> String? { |
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guard let prev = self.prev_ev else { |
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// if they are both null they are the same? |
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return nil |
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} |
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if thread.replies.lookup(prev.id) != thread.replies.lookup(event.id) { |
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return prev.id |
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} |
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return nil |
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} |
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var ReplyDescription: some View { |
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Text("\(reply_desc(profiles: profiles, event: event))") |
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.font(.footnote) |
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.foregroundColor(.gray) |
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.frame(maxWidth: .infinity, alignment: .leading) |
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} |
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var body: some View { |
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let profile = profiles.lookup(id: event.pubkey) |
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HStack { |
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VStack { |
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if is_active || just_started { |
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ProfilePicView(picture: profile?.picture, size: 32, highlight: is_active ? .main : .none) |
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} |
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/* |
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if just_started { |
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ProfilePicView(picture: profile?.picture, size: 32, highlight: thread.event.id == event.id ? .main : .none) |
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} else { |
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Text("\(format_relative_time(event.created_at))") |
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.font(.footnote) |
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.foregroundColor(.gray.opacity(0.5)) |
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} |
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*/ |
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Spacer() |
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} |
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.frame(maxWidth: 32) |
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VStack { |
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if just_started { |
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HStack { |
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ProfileName(pubkey: event.pubkey, profile: profile) |
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Text("\(format_relative_time(event.created_at))") |
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.foregroundColor(.gray) |
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Spacer() |
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} |
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} |
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if let ref_id = thread.replies.lookup(event.id) { |
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ReplyQuoteView(quoter: event, event_id: ref_id) |
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.environmentObject(thread) |
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.environmentObject(profiles) |
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ReplyDescription |
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} |
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Text(event.content) |
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.frame(maxWidth: .infinity, alignment: .leading) |
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.textSelection(.enabled) |
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if next_ev == nil || next_ev!.pubkey != event.pubkey { |
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EventActionBar(event: event) |
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.environmentObject(profiles) |
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} |
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Spacer() |
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} |
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.padding([.leading], 2) |
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//.border(Color.red) |
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} |
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.contentShape(Rectangle()) |
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.id(event.id) |
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.frame(minHeight: just_started ? PFP_SIZE : 0) |
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.padding([.bottom], next_ev == nil ? 4 : 0) |
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.onTapGesture { |
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if is_active { |
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convert_to_thread() |
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} else { |
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thread.event = event |
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} |
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} |
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//.border(Color.green) |
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} |
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@Environment(\.presentationMode) var presmode |
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func dismiss() { |
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presmode.wrappedValue.dismiss() |
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} |
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func convert_to_thread() { |
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NotificationCenter.default.post(name: .convert_to_thread, object: nil) |
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} |
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} |
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extension Notification.Name { |
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static var convert_to_thread: Notification.Name { |
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return Notification.Name("convert_to_thread") |
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} |
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} |
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/* |
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struct ChatView_Previews: PreviewProvider { |
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static var previews: some View { |
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ChatView() |
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} |
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} |
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*/ |
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@ -0,0 +1,45 @@ |
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// |
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// ChatroomView.swift |
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// damus |
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// |
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// Created by William Casarin on 2022-04-19. |
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// |
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import SwiftUI |
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struct ChatroomView: View { |
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@EnvironmentObject var thread: ThreadModel |
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var body: some View { |
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ScrollViewReader { scroller in |
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ScrollView { |
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VStack { |
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let count = thread.events.count |
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ForEach(Array(zip(thread.events, thread.events.indices)), id: \.0.id) { (ev, ind) in |
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ChatView(event: thread.events[ind], |
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prev_ev: ind > 0 ? thread.events[ind-1] : nil, |
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next_ev: ind == count-1 ? nil : thread.events[ind+1] |
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) |
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.environmentObject(thread) |
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} |
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} |
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} |
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.onAppear() { |
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scroll_to_event(scroller: scroller, id: thread.event.id, delay: 0.5, animate: true, anchor: .center) |
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} |
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} |
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} |
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} |
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/* |
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struct ChatroomView_Previews: PreviewProvider { |
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@State var events = [NostrEvent(content: "hello", pubkey: "pubkey")] |
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static var previews: some View { |
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ChatroomView(events: events) |
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} |
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} |
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*/ |
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@ -0,0 +1,64 @@ |
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// |
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// SwiftUIView.swift |
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// damus |
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// |
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// Created by William Casarin on 2022-04-19. |
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// |
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import SwiftUI |
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struct ReplyQuoteView: View { |
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let quoter: NostrEvent |
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let event_id: String |
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@EnvironmentObject var profiles: Profiles |
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@EnvironmentObject var thread: ThreadModel |
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func MainContent(event: NostrEvent) -> some View { |
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HStack(alignment: .top) { |
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ProfilePicView(picture: profiles.lookup(id: event.pubkey)?.picture, size: 16, highlight: .none) |
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//.border(Color.blue) |
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VStack { |
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HStack { |
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ProfileName(pubkey: event.pubkey, profile: profiles.lookup(id: event.pubkey)) |
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Text("\(format_relative_time(event.created_at))") |
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.foregroundColor(.gray) |
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Spacer() |
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} |
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Text(event.content) |
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.frame(maxWidth: .infinity, alignment: .leading) |
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.textSelection(.enabled) |
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//Spacer() |
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} |
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//.border(Color.red) |
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} |
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//.border(Color.green) |
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} |
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var body: some View { |
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Group { |
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if let event = thread.lookup(event_id) { |
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Group { |
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MainContent(event: event) |
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.padding(4) |
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} |
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.background(Color.secondary.opacity(0.2)) |
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.cornerRadius(8.0) |
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} else { |
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ProgressView() |
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.progressViewStyle(.circular) |
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} |
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} |
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} |
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} |
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/* |
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struct SwiftUIView_Previews: PreviewProvider { |
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static var previews: some View { |
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SwiftUIView() |
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} |
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} |
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*/ |
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@ -0,0 +1,44 @@ |
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// |
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// ThreadView.swift |
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// damus |
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// |
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// Created by William Casarin on 2022-04-19. |
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// |
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import SwiftUI |
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struct ThreadView: View { |
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@StateObject var thread: ThreadModel |
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@State var is_thread: Bool = false |
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@EnvironmentObject var profiles: Profiles |
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var body: some View { |
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Group { |
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ChatroomView() |
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.environmentObject(thread) |
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.onReceive(NotificationCenter.default.publisher(for: .convert_to_thread)) { _ in |
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is_thread = true |
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} |
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let edv = EventDetailView(thread: thread).environmentObject(profiles) |
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NavigationLink(destination: edv, isActive: $is_thread) { |
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EmptyView() |
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} |
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} |
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.onDisappear() { |
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thread.unsubscribe() |
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} |
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.onAppear() { |
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thread.subscribe() |
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} |
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} |
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} |
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/* |
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struct ThreadView_Previews: PreviewProvider { |
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static var previews: some View { |
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ThreadView() |
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} |
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} |
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*/ |
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Reference in new issue