73 lines
1.9 KiB
Swift
73 lines
1.9 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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var has_contact: Set<String> = Set()
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let contacts: [String]
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let sub_id: String = UUID().description
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init(damus_state: DamusState, contacts: [String]) {
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self.damus_state = damus_state
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self.contacts = contacts
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}
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func get_filter() -> NostrFilter {
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var f = NostrFilter.filter_kinds([0])
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f.authors = self.contacts.reduce(into: Array<String>()) { acc, pk in
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// don't fetch profiles we already have
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if damus_state.profiles.lookup(id: pk) != nil {
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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() {
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let filter = get_filter()
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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.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.pool.unsubscribe(sub_id: sub_id)
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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 nev):
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switch nev {
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case .event(_, let ev):
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if ev.kind == 0 {
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process_metadata_event(our_pubkey: damus_state.pubkey, profiles: damus_state.profiles, ev: ev)
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}
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case .notice(let msg):
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print("followingmodel notice: \(msg)")
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case .eose:
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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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