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WebsiteQuery.swift
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WebsiteQuery.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 WebsiteQuery: DynamicProperty {
public struct Value {
public let data: Website?
public var identifier: Website.Identifier?
}
@ErrorStorage private var errors
@Controller private var controller
@State private var identifier: Website.Identifier?
@CDObjectQuery<CD_Website, Website>(onRead: Website.init(_:)) private var query
public init() { }
public var wrappedValue: Value {
nonmutating set { self.write(newValue.identifier) }
get { .init(data: self.query.data, identifier: self.identifier) }
}
public var projectedValue: Binding<Website>? {
self.$query
}
private func write(_ newValue: Website.Identifier?) {
let oldIdentifier = self.identifier
self.identifier = newValue
guard oldIdentifier != newValue else { return }
var configuration = self.query.configuration
if configuration.onWrite == nil {
configuration.onWrite = _controller.cd.write(_:with:)
}
if configuration.onError == nil {
configuration.onError = self.errors.append(_:)
}
if let newID = newValue {
configuration.objectID = URL(string: newID.id.rawValue)
} else {
configuration.objectID = nil
}
self.query.configuration = configuration
}
}