109 lines
3.5 KiB
Swift
109 lines
3.5 KiB
Swift
//
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// UserAutocompletion.swift
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// damus
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//
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// Created by William Casarin on 2023-01-28.
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//
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import SwiftUI
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struct SearchedUser: Identifiable {
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let petname: String?
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let profile: Profile?
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let pubkey: String
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var id: String {
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return pubkey
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}
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}
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struct UserSearch: View {
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let damus_state: DamusState
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let search: String
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@Binding var post: NSMutableAttributedString
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var users: [SearchedUser] {
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guard let contacts = damus_state.contacts.event else {
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return []
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}
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return search_users(profiles: damus_state.profiles, tags: contacts.tags, search: search)
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}
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var body: some View {
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ScrollView {
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LazyVStack {
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ForEach(users) { user in
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UserView(damus_state: damus_state, pubkey: user.pubkey)
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.onTapGesture {
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guard let pk = bech32_pubkey(user.pubkey) else {
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return
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}
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while post.string.last != "@" {
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post.deleteCharacters(in: NSRange(location: post.length - 1, length: 1))
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}
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post.deleteCharacters(in: NSRange(location: post.length - 1, length: 1))
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var tagString = ""
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if let name = user.profile?.name {
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tagString = "@\(name)\u{200B} "
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}
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let tagAttributedString = NSMutableAttributedString(string: tagString,
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attributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 18.0),
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NSAttributedString.Key.link: "@\(pk)"])
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tagAttributedString.removeAttribute(.link, range: NSRange(location: tagAttributedString.length - 2, length: 2))
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let mutableString = NSMutableAttributedString()
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mutableString.append(post)
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mutableString.append(tagAttributedString)
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post = mutableString
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}
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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 UserSearch_Previews: PreviewProvider {
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static let search: String = "jb55"
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@State static var post: NSMutableAttributedString = NSMutableAttributedString(string: "some @jb55")
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static var previews: some View {
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UserSearch(damus_state: test_damus_state(), search: search, post: $post)
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}
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}
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func search_users(profiles: Profiles, tags: [[String]], search _search: String) -> [SearchedUser] {
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var seen_user = Set<String>()
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let search = _search.lowercased()
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return tags.reduce(into: Array<SearchedUser>()) { arr, tag in
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guard tag.count >= 2 && tag[0] == "p" else {
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return
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}
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let pubkey = tag[1]
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guard !seen_user.contains(pubkey) else {
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return
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}
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seen_user.insert(pubkey)
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var petname: String? = nil
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if tag.count >= 4 {
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petname = tag[3]
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}
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let profile = profiles.lookup(id: pubkey)
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guard ((petname?.lowercased().hasPrefix(search) ?? false) || (profile?.name?.lowercased().hasPrefix(search) ?? false)) else {
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return
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}
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let searched_user = SearchedUser(petname: petname, profile: profile, pubkey: pubkey)
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arr.append(searched_user)
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}
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}
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