98 lines
2.6 KiB
Swift
98 lines
2.6 KiB
Swift
//
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// RemoteImage.swift
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// nirvana-ios
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//
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// Created by Arjun Patel on 12/14/21.
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//
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import SwiftUI
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struct RemoteImage: View {
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@StateObject private var loader: Loader
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var loading: Image
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var failure: Image
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// custom average color property we need to access
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var averageColor: UIColor?
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private enum LoadState {
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case loading, success, failure
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}
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var body: some View {
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selectImage()
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.resizable()
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}
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init(url: String, loading: Image = Image(systemName: "photo"), failure: Image = Image(systemName: "multiply.circle")) {
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_loader = StateObject(wrappedValue: Loader(url: url))
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self.loading = loading
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self.failure = failure
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}
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private func selectImage() -> Image {
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switch loader.state {
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case .loading:
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return loading
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case .failure:
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return failure
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default:
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if let image = UIImage(data: loader.data) {
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return Image(uiImage: image)
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} else {
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return failure
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}
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}
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}
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private class Loader: ObservableObject {
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var data = Data()
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var state = LoadState.loading
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init(url: String) {
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guard let parsedURL = URL(string: url) else {
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fatalError("Invalid URL: \(url)")
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}
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URLSession.shared.dataTask(with: parsedURL) { data, response, error in
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if let data = data, data.count > 0 {
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self.data = data
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self.state = .success
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} else {
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self.state = .failure
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}
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DispatchQueue.main.async {
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self.objectWillChange.send()
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}
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}.resume()
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}
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}
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}
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struct RemoteImage_Previews: PreviewProvider {
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static var previews: some View {
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RemoteImage(url: "https://avatars.githubusercontent.com/u/41487836")
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}
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}
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class NirvanaImage {
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static func getAverageColor(url:String) -> UIColor? {
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guard let parsedURL = URL(string: url) else {
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fatalError("Invalid URL: \(url)")
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}
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if let data = try? Data(contentsOf: parsedURL) {
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if let image = UIImage(data: data) {
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print("got the average color of image \(image.averageColor)")
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return image.averageColor
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} else {
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print("failed to get image average color")
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return nil
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}
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}
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print("failed to get image average color")
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return nil
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}
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}
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