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Model.swift
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115 lines (98 loc) · 3.74 KB
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// Copyright (c) 2022-2024 Jason Morley
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
import Combine
import SwiftUI
#warning("TODO: What thread is the filter running on?")
class Model: ObservableObject {
@Environment(\.openURL) private var openURL
@Published var items = [Item()]
@Published var selection = Set<Item.ID>()
@Published var filter = ""
@Published var filteredItems: [Item] = []
@Published var isPainted = false
@Published var layoutMode: LayoutMode = .column
@Published var subtitle: String = ""
private var cancellables: Set<AnyCancellable> = []
private var backgroundQueue = DispatchQueue(label: "backgroundQueue")
@MainActor func selectRandomItem() {
guard let item = items.randomElement() else {
return
}
selection = Set([item.id])
}
@MainActor func clearSelection() {
selection = Set()
}
@MainActor func delete(ids: Set<Item.ID>) {
items.removeAll { ids.contains($0.id) }
}
@MainActor func addManyItems() {
backgroundQueue.async {
var newItems: [Item] = []
for _ in 0..<1000 {
newItems.append(Item())
}
let immutableNewItems = newItems
DispatchQueue.main.sync {
self.items = self.items + immutableNewItems
}
}
}
@MainActor func remove(ids: Set<Item.ID>) {
items.removeAll { ids.contains($0.id) }
}
@MainActor func open(ids: Set<Item.ID>) {
for item in items.filter({ ids.contains($0.id) }) {
guard let url = URL(string: "https://www.colorhexa.com/\(item.color.hexCode)") else {
continue
}
openURL(url)
}
}
@MainActor func run() {
// Update the filter.
$filter
.combineLatest($items)
.compactMap { (filter, items) in
return items.filter { filter.isEmpty || $0.color.hexCode.localizedCaseInsensitiveContains(filter) }
}
.receive(on: DispatchQueue.main)
.sink { filteredItems in
self.filteredItems = filteredItems
}
.store(in: &cancellables)
// Print the selection.
$selection
.receive(on: DispatchQueue.main)
.sink { selection in
print("selection = \(selection)")
}
.store(in: &cancellables)
// Generate a subtitle summarizing the number of items.
$items
.map { $0.count }
.map { "\($0) items" }
.receive(on: DispatchQueue.main)
.sink { subtitle in
self.subtitle = subtitle
}
.store(in: &cancellables)
}
}