74 lines
2.4 KiB
Swift
74 lines
2.4 KiB
Swift
//
|
|
// DiscoveryHashtagsViewModel.swift
|
|
// Mastodon
|
|
//
|
|
// Created by MainasuK on 2022-4-13.
|
|
//
|
|
|
|
import os.log
|
|
import UIKit
|
|
import Combine
|
|
import GameplayKit
|
|
import CoreData
|
|
import CoreDataStack
|
|
import MastodonCore
|
|
import MastodonSDK
|
|
|
|
final class DiscoveryHashtagsViewModel {
|
|
|
|
let logger = Logger(subsystem: "DiscoveryHashtagsViewModel", category: "ViewModel")
|
|
|
|
var disposeBag = Set<AnyCancellable>()
|
|
|
|
// input
|
|
let context: AppContext
|
|
let authContext: AuthContext
|
|
let viewDidAppeared = PassthroughSubject<Void, Never>()
|
|
|
|
// output
|
|
var diffableDataSource: UITableViewDiffableDataSource<DiscoverySection, DiscoveryItem>?
|
|
@Published var hashtags: [Mastodon.Entity.Tag] = []
|
|
|
|
init(context: AppContext, authContext: AuthContext) {
|
|
self.context = context
|
|
self.authContext = authContext
|
|
// end init
|
|
|
|
viewDidAppeared
|
|
.throttle(for: 3, scheduler: DispatchQueue.main, latest: true)
|
|
.asyncMap { authenticationBox in
|
|
try await context.apiService.trendHashtags(domain: authContext.mastodonAuthenticationBox.domain, query: nil)
|
|
}
|
|
.retry(3)
|
|
.map { response in Result<Mastodon.Response.Content<[Mastodon.Entity.Tag]>, Error> { response } }
|
|
.catch { error in Just(Result<Mastodon.Response.Content<[Mastodon.Entity.Tag]>, Error> { throw error }) }
|
|
.receive(on: DispatchQueue.main)
|
|
.sink { [weak self] result in
|
|
guard let self = self else { return }
|
|
switch result {
|
|
case .success(let response):
|
|
self.hashtags = response.value.filter { !$0.name.isEmpty }
|
|
case .failure:
|
|
break
|
|
}
|
|
}
|
|
.store(in: &disposeBag)
|
|
}
|
|
|
|
deinit {
|
|
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
|
|
}
|
|
|
|
}
|
|
|
|
extension DiscoveryHashtagsViewModel {
|
|
|
|
@MainActor
|
|
func fetch() async throws {
|
|
let response = try await context.apiService.trendHashtags(domain: authContext.mastodonAuthenticationBox.domain, query: nil)
|
|
hashtags = response.value.filter { !$0.name.isEmpty }
|
|
logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): fetch tags: \(response.value.count)")
|
|
}
|
|
|
|
}
|