yattee/Model/RecentsModel.swift

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import Defaults
import Foundation
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final class RecentsModel: ObservableObject {
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@Default(.recentlyOpened) var items
func clear() {
items = []
}
func clearQueries() {
items.removeAll { $0.type == .query }
}
func add(_ item: RecentItem) {
if let index = items.firstIndex(where: { $0.id == item.id }) {
items.remove(at: index)
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}
items.append(item)
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}
func close(_ item: RecentItem) {
if let index = items.firstIndex(where: { $0.id == item.id }) {
items.remove(at: index)
}
}
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func addQuery(_ query: String) {
if !query.isEmpty {
add(.init(from: query))
}
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}
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var presentedChannel: Channel? {
if let recent = items.last(where: { $0.type == .channel }) {
return recent.channel
}
return nil
}
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var presentedPlaylist: ChannelPlaylist? {
if let recent = items.last(where: { $0.type == .playlist }) {
return recent.playlist
}
return nil
}
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}
struct RecentItem: Defaults.Serializable, Identifiable {
static var bridge = RecentItemBridge()
enum ItemType: String {
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case channel, playlist, query
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}
var type: ItemType
var id: String
var title: String
var tag: String {
"recent\(type.rawValue.capitalized)\(id)"
}
var query: SearchQuery? {
guard type == .query else {
return nil
}
return SearchQuery(query: title)
}
var channel: Channel? {
guard type == .channel else {
return nil
}
return Channel(id: id, name: title)
}
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var playlist: ChannelPlaylist? {
guard type == .playlist else {
return nil
}
return ChannelPlaylist(id: id, title: title)
}
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init(type: ItemType, identifier: String, title: String) {
self.type = type
id = identifier
self.title = title
}
init(from channel: Channel) {
type = .channel
id = channel.id
title = channel.name
}
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init(from query: String) {
type = .query
id = query
title = query
}
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init(from playlist: ChannelPlaylist) {
type = .playlist
id = playlist.id
title = playlist.title
}
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}
struct RecentItemBridge: Defaults.Bridge {
typealias Value = RecentItem
typealias Serializable = [String: String]
func serialize(_ value: Value?) -> Serializable? {
guard let value = value else {
return nil
}
return [
"type": value.type.rawValue,
"identifier": value.id,
"title": value.title
]
}
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func deserialize(_ object: Serializable?) -> Value? {
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guard
let object = object,
let type = object["type"],
let identifier = object["identifier"],
let title = object["title"]
else {
return nil
}
return RecentItem(
type: .init(rawValue: type)!,
identifier: identifier,
title: title
)
}
}