forked from zelo72/mastodon-ios
86 lines
3.1 KiB
Swift
86 lines
3.1 KiB
Swift
//
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// AudioContainerViewModel.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/3/9.
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//
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import Foundation
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import CoreDataStack
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import UIKit
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class AudioContainerViewModel {
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static func configure(
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cell: StatusTableViewCell,
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audioAttachment: Attachment
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) {
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guard let duration = audioAttachment.meta?.original?.duration else { return }
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let audioView = cell.statusView.audioView
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audioView.timeLabel.text = duration.asString(style: .positional)
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audioView.playButton.publisher(for: .touchUpInside)
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.sink { button in
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if (button.isSelected) {
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AudioPlayer.shared.pause()
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} else {
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if audioAttachment === AudioPlayer.shared.attachment {
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if AudioPlayer.shared.currentTimeSubject.value == 0 {
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AudioPlayer.shared.playAudio(audioAttachment: audioAttachment)
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} else {
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AudioPlayer.shared.resume()
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}
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} else {
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AudioPlayer.shared.playAudio(audioAttachment: audioAttachment)
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}
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}
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}
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.store(in: &cell.disposeBag)
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audioView.slider.publisher(for: .valueChanged)
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.sink { slider in
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let slider = slider as! UISlider
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let time = Double(slider.value) * duration
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AudioPlayer.shared.seekToTime(time: time)
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}
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.store(in: &cell.disposeBag)
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self.observePlayer(cell:cell, audioAttachment: audioAttachment)
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if audioAttachment != AudioPlayer.shared.attachment {
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self.resetAudioView(audioView: audioView)
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}
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}
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static func observePlayer(
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cell: StatusTableViewCell,
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audioAttachment: Attachment
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) {
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let audioView = cell.statusView.audioView
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AudioPlayer.shared.currentTimeSubject
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.receive(on: DispatchQueue.main)
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.filter { _ in
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audioAttachment === AudioPlayer.shared.attachment
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}
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.sink(receiveValue: { time in
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audioView.timeLabel.text = time.asString(style: .positional)
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if let duration = audioAttachment.meta?.original?.duration, !audioView.slider.isTracking {
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audioView.slider.setValue(Float(time/duration), animated: true)
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}
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})
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.store(in: &cell.disposeBag)
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AudioPlayer.shared.playbackState
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.map {
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return $0 == .playing || $0 == .readyToPlay
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}
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.sink(receiveValue: { isPlaying in
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if (audioAttachment === AudioPlayer.shared.attachment) {
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audioView.playButton.isSelected = isPlaying
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} else {
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self.resetAudioView(audioView: audioView)
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}
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})
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.store(in: &cell.disposeBag)
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}
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static func resetAudioView(audioView:AudioContainerView) {
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audioView.playButton.isSelected = false
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audioView.slider.setValue(0, animated: false)
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}
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}
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