Daniel D’Aquino
3a0acfaba1
This commit implements a new layer called NostrNetworkManager, responsible for managing interactions with the Nostr network, and providing a higher level API that is easier and more secure to use for the layer above it. It also integrates it with the rest of the app, by moving RelayPool and PostBox into NostrNetworkManager, along with all their usages. Changelog-Added: Added NIP-65 relay list support Changelog-Changed: Improved robustness of relay list handling Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
60 lines
1.6 KiB
Swift
60 lines
1.6 KiB
Swift
//
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// FollowingModel.swift
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// damus
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//
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// Created by William Casarin on 2022-05-24.
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//
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import Foundation
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class FollowingModel {
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let damus_state: DamusState
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var needs_sub: Bool = true
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let contacts: [Pubkey]
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let hashtags: [Hashtag]
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let sub_id: String = UUID().description
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init(damus_state: DamusState, contacts: [Pubkey], hashtags: [Hashtag]) {
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self.damus_state = damus_state
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self.contacts = contacts
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self.hashtags = hashtags
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}
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func get_filter<Y>(txn: NdbTxn<Y>) -> NostrFilter {
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var f = NostrFilter(kinds: [.metadata])
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f.authors = self.contacts.reduce(into: Array<Pubkey>()) { acc, pk in
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// don't fetch profiles we already have
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if damus_state.profiles.has_fresh_profile(id: pk, txn: txn) {
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return
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}
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acc.append(pk)
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}
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return f
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}
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func subscribe<Y>(txn: NdbTxn<Y>) {
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let filter = get_filter(txn: txn)
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if (filter.authors?.count ?? 0) == 0 {
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needs_sub = false
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return
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}
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let filters = [filter]
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//print_filters(relay_id: "following", filters: [filters])
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self.damus_state.nostrNetwork.pool.subscribe(sub_id: sub_id, filters: filters, handler: handle_event)
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}
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func unsubscribe() {
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if !needs_sub {
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return
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}
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print("unsubscribing from following \(sub_id)")
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self.damus_state.nostrNetwork.pool.unsubscribe(sub_id: sub_id)
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}
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func handle_event(relay_id: RelayURL, ev: NostrConnectionEvent) {
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// don't need to do anything here really
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}
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}
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