b2ba1e0e3b
This patch allows highlights to be included in posts as well as removes context when creating a highlight. Highlights now route as the root and selecting the highlight in root routes to the highlighted event. Signed-off-by: ericholguin <ericholguin@apache.org>
69 lines
2.0 KiB
Swift
69 lines
2.0 KiB
Swift
//
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// ContentFilters.swift
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// damus
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//
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// Created by Daniel D’Aquino on 2023-09-18.
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//
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import Foundation
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/// Simple filter to determine whether to show posts or all posts and replies.
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enum FilterState : Int {
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case posts_and_replies = 1
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case posts = 0
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func filter(ev: NostrEvent) -> Bool {
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switch self {
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case .posts:
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return ev.known_kind == .boost || ev.known_kind == .highlight || !ev.is_reply()
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case .posts_and_replies:
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return true
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}
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}
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}
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/// Simple filter to determine whether to show posts with #nsfw tags
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func nsfw_tag_filter(ev: NostrEvent) -> Bool {
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return ev.referenced_hashtags.first(where: { t in t.hashtag == "nsfw" }) == nil
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}
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func get_repost_of_muted_user_filter(damus_state: DamusState) -> ((_ ev: NostrEvent) -> Bool) {
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return { ev in
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guard ev.known_kind == .boost else { return true }
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// This needs to use cached because it can be way too slow otherwise
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guard let inner_ev = ev.get_cached_inner_event(cache: damus_state.events) else { return true }
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return should_show_event(state: damus_state, ev: inner_ev)
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}
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}
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/// Generic filter with various tweakable settings
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struct ContentFilters {
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var filters: [(NostrEvent) -> Bool]
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func filter(ev: NostrEvent) -> Bool {
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for filter in filters {
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if !filter(ev) {
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return false
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}
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}
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return true
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}
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}
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extension ContentFilters {
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static func default_filters(damus_state: DamusState) -> ContentFilters {
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return ContentFilters(filters: ContentFilters.defaults(damus_state: damus_state))
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}
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static func defaults(damus_state: DamusState) -> [(NostrEvent) -> Bool] {
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var filters = Array<(NostrEvent) -> Bool>()
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if damus_state.settings.hide_nsfw_tagged_content {
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filters.append(nsfw_tag_filter)
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}
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filters.append(get_repost_of_muted_user_filter(damus_state: damus_state))
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return filters
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}
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}
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