87 lines
3.2 KiB
Swift
87 lines
3.2 KiB
Swift
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//
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// EmojiService+CustomEmoji+LoadState.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-3-15.
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//
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import os.log
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import Foundation
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import GameplayKit
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extension EmojiService.CustomEmoji {
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class LoadState: GKState {
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weak var viewModel: EmojiService.CustomEmoji?
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init(viewModel: EmojiService.CustomEmoji) {
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self.viewModel = viewModel
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}
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override func didEnter(from previousState: GKState?) {
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os_log("%{public}s[%{public}ld], %{public}s: enter %s, previous: %s", ((#file as NSString).lastPathComponent), #line, #function, self.debugDescription, previousState.debugDescription)
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}
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}
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}
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extension EmojiService.CustomEmoji.LoadState {
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class Initial: EmojiService.CustomEmoji.LoadState {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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return stateClass == Loading.self
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}
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}
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class Loading: EmojiService.CustomEmoji.LoadState {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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return stateClass == Fail.self || stateClass == Finish.self
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}
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override func didEnter(from previousState: GKState?) {
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super.didEnter(from: previousState)
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guard let viewModel = viewModel, let stateMachine = stateMachine else { return }
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viewModel.context.apiService.customEmoji(domain: viewModel.domain)
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.receive(on: DispatchQueue.main)
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.sink { completion in
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switch completion {
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case .failure(let error):
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: failed to load custom emojis for %s: %s. Retry 10s later", ((#file as NSString).lastPathComponent), #line, #function, viewModel.domain, error.localizedDescription)
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stateMachine.enter(Fail.self)
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case .finished:
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break
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}
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} receiveValue: { response in
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: load %ld custom emojis for %s", ((#file as NSString).lastPathComponent), #line, #function, response.value.count, viewModel.domain)
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stateMachine.enter(Finish.self)
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viewModel.emojis.value = response.value
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}
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.store(in: &viewModel.disposeBag)
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}
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}
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class Fail: EmojiService.CustomEmoji.LoadState {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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return stateClass == Loading.self || stateClass == Finish.self
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}
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override func didEnter(from previousState: GKState?) {
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super.didEnter(from: previousState)
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guard let stateMachine = stateMachine else { return }
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// retry 10s later
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DispatchQueue.main.asyncAfter(deadline: .now() + 10) {
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stateMachine.enter(Loading.self)
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}
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}
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}
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class Finish: EmojiService.CustomEmoji.LoadState {
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override func isValidNextState(_ stateClass: AnyClass) -> Bool {
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// one time task
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return false
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}
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}
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}
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