//
// Swiftfin is subject to the terms of the Mozilla Public
// License, v2.0. If a copy of the MPL was not distributed with this
// file, you can obtain one at https://mozilla.org/MPL/2.0/.
//
// Copyright (c) 2022 Jellyfin & Jellyfin Contributors
//

import NukeUI
import SwiftUI

struct ImageView: View {
	private let source: URL
	private let blurhash: String
	private let failureInitials: String

	init(src: URL, bh: String = "001fC^", failureInitials: String = "") {
		self.source = src
		self.blurhash = bh
		self.failureInitials = failureInitials
	}

	// TODO: fix placeholder hash image
	@ViewBuilder
	private var placeholderImage: some View {
		Image(uiImage: UIImage(blurHash: blurhash, size: CGSize(width: 8, height: 8)) ??
			UIImage(blurHash: "001fC^", size: CGSize(width: 8, height: 8))!)
			.resizable()
	}

	@ViewBuilder
	private var failureImage: some View {
		ZStack {
			Rectangle()
				.foregroundColor(Color(UIColor.darkGray))

			Text(failureInitials)
				.font(.largeTitle)
				.foregroundColor(.secondary)
				.accessibilityHidden(true)
		}
	}

	var body: some View {
		LazyImage(source: source) { state in
			if let image = state.image {
				image
			} else if state.error != nil {
				failureImage
			} else {
				#if os(tvOS)
					ZStack {
						Color.black.ignoresSafeArea()

						ProgressView()
					}
				#else
					ZStack {
						Color.gray.ignoresSafeArea()

						ProgressView()
					}
				#endif
			}
		}
		.pipeline(ImagePipeline(configuration: .withDataCache))
	}
}