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TagApplyQuery.swift
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TagApplyQuery.swift
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//
// Created by Jeffrey Bergier on 2022/06/17.
//
// MIT License
//
// Copyright (c) 2021 Jeffrey Bergier
//
// 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 SwiftUI
import Umbrella
import V3Model
@propertyWrapper
public struct TagApplyQuery: DynamicProperty {
@ErrorStorage private var errors
@Controller private var controller
// TODO: Restore the use of `TagUserListQuery`
// For some reason, in Release builds, there is a compiler error in Xcode 14.3
// @TagUserListQuery private var data
@FetchRequest(entity: CD_Tag.entity(),
sortDescriptors: [NSSortDescriptor(CD_Tag.defaultSort)],
predicate: .init(value: true),
animation: .default)
private var tags: FetchedResults<CD_Tag>
@State public var selection: Website.Selection = []
public init() {}
public var wrappedValue: some RandomAccessCollection<TagApply> {
return self.tags.lazy.map(self.valueGenerator(_:))
}
public var projectedValue: some RandomAccessCollection<Binding<TagApply>> {
return self.tags.map { tag in
Binding {
self.valueGenerator(tag)
} set: {
let result = _controller.cd.write(tag: $0, selection: self.selection)
guard let error = result.error else { return }
NSLog(String(describing: error))
self.errors.append(error)
}
}
}
private func valueGenerator(_ tag: CD_Tag) -> TagApply {
let identifier = Tag.Identifier(tag.objectID)
let status = _controller.cd.tagStatus(identifier: identifier,
selection: self.selection)
return .init(identifier: identifier, status: status)
}
}