36 lines
642 B
Swift
36 lines
642 B
Swift
//
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// PreviewCache.swift
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// damus
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//
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// Created by William Casarin on 2023-01-02.
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//
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import Foundation
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import LinkPresentation
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enum Preview {
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case value(LinkViewRepresentable)
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case failed
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}
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class PreviewCache {
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var previews: [String: Preview]
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func lookup(_ evid: String) -> Preview? {
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return previews[evid]
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}
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func store(evid: String, preview: LinkViewRepresentable?) {
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switch preview {
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case .none:
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previews[evid] = .failed
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case .some(let meta):
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previews[evid] = .value(meta)
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}
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}
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init() {
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self.previews = [:]
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}
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}
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