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perf: cache link previews

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Changelog-Added: Cache link previews
This commit is contained in:
William Casarin
2023-01-02 15:18:42 -08:00
parent b42f0ec5eb
commit 7372c4847d
11 changed files with 38 additions and 16 deletions
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3
damus/ContentView.swift
View File

@@ -423,7 +423,8 @@ struct ContentView: View {
contacts: Contacts(),
tips: TipCounter(our_pubkey: pubkey),
profiles: Profiles(),
dms: home.dms
dms: home.dms,
previews: PreviewCache()
)
home.damus_state = self.damus_state!

4
damus/Models/DamusState.swift
View File

@@ -6,6 +6,7 @@
//
import Foundation
import LinkPresentation
struct DamusState {
let pool: RelayPool
@@ -16,12 +17,13 @@ struct DamusState {
let tips: TipCounter
let profiles: Profiles
let dms: DirectMessagesModel
let previews: PreviewCache
var pubkey: String {
return keypair.pubkey
}
static var empty: DamusState {
return DamusState.init(pool: RelayPool(), keypair: Keypair(pubkey: "", privkey: ""), likes: EventCounter(our_pubkey: ""), boosts: EventCounter(our_pubkey: ""), contacts: Contacts(), tips: TipCounter(our_pubkey: ""), profiles: Profiles(), dms: DirectMessagesModel())
return DamusState.init(pool: RelayPool(), keypair: Keypair(pubkey: "", privkey: ""), likes: EventCounter(our_pubkey: ""), boosts: EventCounter(our_pubkey: ""), contacts: Contacts(), tips: TipCounter(our_pubkey: ""), profiles: Profiles(), dms: DirectMessagesModel(), previews: PreviewCache())
}
}

2
damus/Util/Constants.swift
View File

@@ -11,7 +11,7 @@ public class Constants {
static let PUB_KEY = "3efdaebb1d8923ebd99c9e7ace3b4194ab45512e2be79c1b7d68d9243e0d2681"
static let EXAMPLE_DEMOS = DamusState(pool: RelayPool(), keypair: Keypair(pubkey: PUB_KEY, privkey: "privkey"), likes: EventCounter(our_pubkey: PUB_KEY), boosts: EventCounter(our_pubkey: PUB_KEY), contacts: Contacts(), tips: TipCounter(our_pubkey: PUB_KEY), profiles: Profiles(), dms: DirectMessagesModel())
static let EXAMPLE_DEMOS: DamusState = .empty
static let EXAMPLE_EVENTS = [
NostrEvent(id: UUID().description, content: "Nostr - Damus... Haha get it? Bonjour Le Monde mon Ami! C'est la tres importante", pubkey: "3efdaebb1d8923ebd99c9e7ace3b4194ab45512e2be79c1b7d68d9243e0d2681"),

4
damus/Views/ChatView.swift
View File

@@ -96,7 +96,7 @@ struct ChatView: View {
if let ref_id = thread.replies.lookup(event.id) {
if !is_reply_to_prev() {
ReplyQuoteView(privkey: damus_state.keypair.privkey, quoter: event, event_id: ref_id, profiles: damus_state.profiles)
ReplyQuoteView(privkey: damus_state.keypair.privkey, quoter: event, event_id: ref_id, profiles: damus_state.profiles, previews: damus_state.previews)
.frame(maxHeight: expand_reply ? nil : 100)
.environmentObject(thread)
.onTapGesture {
@@ -106,7 +106,7 @@ struct ChatView: View {
}
}
NoteContentView(privkey: damus_state.keypair.privkey, event: event, profiles: damus_state.profiles, show_images: should_show_images(contacts: damus_state.contacts, ev: event, our_pubkey: damus_state.pubkey), artifacts: .just_content(event.content), size: .normal)
NoteContentView(privkey: damus_state.keypair.privkey, event: event, profiles: damus_state.profiles, previews: damus_state.previews, show_images: should_show_images(contacts: damus_state.contacts, ev: event, our_pubkey: damus_state.pubkey), artifacts: .just_content(event.content), size: .normal)
if is_active || next_ev == nil || next_ev!.pubkey != event.pubkey {
let bar = make_actionbar_model(ev: event, damus: damus_state)

2
damus/Views/DMView.swift
View File

@@ -23,7 +23,7 @@ struct DMView: View {
let should_show_img = should_show_images(contacts: damus_state.contacts, ev: event, our_pubkey: damus_state.pubkey)
NoteContentView(privkey: damus_state.keypair.privkey, event: event, profiles: damus_state.profiles, show_images: should_show_img, artifacts: .just_content(event.get_content(damus_state.keypair.privkey)), size: .normal)
NoteContentView(privkey: damus_state.keypair.privkey, event: event, profiles: damus_state.profiles, previews: damus_state.previews, show_images: should_show_img, artifacts: .just_content(event.get_content(damus_state.keypair.privkey)), size: .normal)
.foregroundColor(is_ours ? Color.white : Color.primary)
.padding(10)
.background(is_ours ? Color.accentColor : Color.secondary.opacity(0.15))

2
damus/Views/EventView.swift
View File

@@ -249,7 +249,7 @@ struct EventView: View {
let should_show_img = should_show_images(contacts: damus.contacts, ev: event, our_pubkey: damus.pubkey)
NoteContentView(privkey: damus.keypair.privkey, event: event, profiles: damus.profiles, show_images: should_show_img, artifacts: .just_content(content), size: self.size)
NoteContentView(privkey: damus.keypair.privkey, event: event, profiles: damus.profiles, previews: damus.previews, show_images: should_show_img, artifacts: .just_content(content), size: self.size)
.frame(maxWidth: .infinity, alignment: .leading)
.allowsHitTesting(!embedded)

24
damus/Views/NoteContentView.swift
View File

@@ -61,12 +61,13 @@ struct NoteContentView: View {
let privkey: String?
let event: NostrEvent
let profiles: Profiles
let previews: PreviewCache
let show_images: Bool
@State var artifacts: NoteArtifacts
@State var metaData: LPLinkMetadata? = nil
@State var preview: LinkViewRepresentable? = nil
let size: EventViewKind
func MainContent() -> some View {
@@ -89,8 +90,8 @@ struct NoteContentView: View {
InvoicesView(invoices: artifacts.invoices)
}
if show_images, self.metaData != nil {
LinkViewRepresentable(metadata: self.metaData)
if show_images, self.preview != nil {
self.preview
} else {
ForEach(artifacts.links, id:\.self) { link in
LinkViewRepresentable(url: link)
@@ -123,9 +124,22 @@ struct NoteContentView: View {
}
}
.task {
if let preview = previews.lookup(self.event.id) {
switch preview {
case .value(let view):
self.preview = view
case .failed:
// don't try to refetch meta if we've failed
return
}
}
if show_images, artifacts.links.count == 1 {
let meta = await getMetaData(for: artifacts.links.first!)
self.metaData = await getMetaData(for: artifacts.links.first!)
let view = LinkViewRepresentable(metadata: meta)
previews.store(evid: self.event.id, preview: view)
self.preview = view
}
}
}
@@ -170,6 +184,6 @@ struct NoteContentView_Previews: PreviewProvider {
let state = test_damus_state()
let content = "hi there https://jb55.com/s/Oct12-150217.png 5739a762ef6124dd.jpg"
let artifacts = NoteArtifacts(content: content, images: [], invoices: [], links: [])
NoteContentView(privkey: "", event: NostrEvent(content: content, pubkey: "pk"), profiles: state.profiles, show_images: true, artifacts: artifacts, size: .normal)
NoteContentView(privkey: "", event: NostrEvent(content: content, pubkey: "pk"), profiles: state.profiles, previews: PreviewCache(), show_images: true, artifacts: artifacts, size: .normal)
}
}

3
damus/Views/ProfileView.swift
View File

@@ -306,8 +306,7 @@ struct ProfileView_Previews: PreviewProvider {
func test_damus_state() -> DamusState {
let pubkey = "3efdaebb1d8923ebd99c9e7ace3b4194ab45512e2be79c1b7d68d9243e0d2681"
let damus = DamusState(pool: RelayPool(), keypair: Keypair(pubkey: pubkey, privkey: "privkey"), likes: EventCounter(our_pubkey: pubkey), boosts: EventCounter(our_pubkey: pubkey), contacts: Contacts(), tips: TipCounter(our_pubkey: pubkey), profiles: Profiles(), dms: DirectMessagesModel())
let damus: DamusState = .empty
let prof = Profile(name: "damus", display_name: "Damus", about: "iOS app!", picture: "https://damus.io/img/logo.png", website: "https://damus.io", lud06: nil, lud16: "jb55@sendsats.lol", nip05: "damus.io")
let tsprof = TimestampedProfile(profile: prof, timestamp: 0)
damus.profiles.add(id: pubkey, profile: tsprof)

5
damus/Views/ReplyQuoteView.swift
View File

@@ -12,6 +12,7 @@ struct ReplyQuoteView: View {
let quoter: NostrEvent
let event_id: String
let profiles: Profiles
let previews: PreviewCache
@EnvironmentObject var thread: ThreadModel
@@ -31,7 +32,7 @@ struct ReplyQuoteView: View {
.foregroundColor(.gray)
}
NoteContentView(privkey: privkey, event: event, profiles: profiles, show_images: false, artifacts: .just_content(event.content), size: .normal)
NoteContentView(privkey: privkey, event: event, profiles: profiles, previews: previews, show_images: false, artifacts: .just_content(event.content), size: .normal)
.font(.callout)
.foregroundColor(.accentColor)
@@ -58,7 +59,7 @@ struct ReplyQuoteView_Previews: PreviewProvider {
static var previews: some View {
let s = test_damus_state()
let quoter = NostrEvent(content: "a\nb\nc", pubkey: "pubkey")
ReplyQuoteView(privkey: s.keypair.privkey, quoter: quoter, event_id: "pubkey2", profiles: s.profiles)
ReplyQuoteView(privkey: s.keypair.privkey, quoter: quoter, event_id: "pubkey2", profiles: s.profiles, previews: PreviewCache())
.environmentObject(ThreadModel(event: quoter, damus_state: s))
}
}

1
damus/damusApp.swift
View File

@@ -7,6 +7,7 @@
import SwiftUI
@main
struct damusApp: App {
var body: some Scene {