mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-10 22:45:59 +05:45
Morten Bek Ditlevsen
0175b86cb5
* Added pristine version of JSONEncoder.swift to the project * Renamed JSONEncoder and JSONDecoder and namespaced them under Database. Skip JSONSerialization steps of encoding and decoding * Added convenience decoding to DataSnapshot and encoding to DatabaseReference * Convert to 2 space indentation * Added ServerTimestamp - modelled on Firestore ditto * Added a ServerIncrement enum/property wrapper. Not too happy about the property wrapper API though * Fix ServerTimestamp Date decoding and encoding * Fix ServerTimestamp Date decoding and encoding * Added API for setting default decoder and encoder * Fix typo and linter error * Changed requirement for ServerIncrement generic parameter to be AdditiveArithmetic instead of Numeric. Added tests for server value coding. * Add test for alternative ServerIncrement API and demonstrate that this version of the API also models actual optionality * Test the default encoder and decoder * Added more tests derived from corresponding Firestore coding tests * Ran linter * Delete EncoderTests.swift Ooops, I added this file prematurely. * Added modified version of tests from apple/swift * Rename all but a few occurrences of 'json' and add a reference to the original file from apple/swift * Made it possible to decode Optional types * Updated copyright messages * Removed CodableErrors and force cast ServerValue.timestamp() based on feedback on PR * Changed completion handler to take a Result<Void, Error> * Add escaping to closure parameter * Fixed format * Change completion handler type to accept and Optional Error rather than a Result<Void, Error> * Remove ServerIncrement for now * Fix function signature error * Remove Swift 4 support. Remove default encoder/decoder configuration. Add FirebaseDatabaseSwift.podspec - I don't know if it's good though, as I don't use CocoaPods myself. * Update podspec with fixes from review * Run scripts/style.sh * Add -Beta to FirebaseDatabaseSwift library
69 lines
2.0 KiB
Swift
69 lines
2.0 KiB
Swift
/*
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* Copyright 2020 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import FirebaseDatabase
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/// A property wrapper that marks an `Optional<Date>` field to be
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/// populated with a server timestamp. If a `Codable` object being written
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/// contains a `nil` for an `@ServerTimestamp`-annotated field, it will be
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/// replaced with `ServerValue.timestamp()` as it is sent.
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///
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/// Example:
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/// ```
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/// struct CustomModel {
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/// @ServerTimestamp var ts: Date?
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/// }
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/// ```
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///
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/// Then writing `CustomModel(ts: nil)` will tell server to fill `ts` with
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/// current timestamp.
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@propertyWrapper
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public struct ServerTimestamp: Codable, Equatable, Hashable {
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var value: Date?
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public init(wrappedValue value: Date?) {
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self.value = value
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}
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public var wrappedValue: Date? {
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get { value }
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set { value = newValue }
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}
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// MARK: Codable
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public init(from decoder: Decoder) throws {
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let container = try decoder.singleValueContainer()
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if container.decodeNil() {
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value = nil
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} else {
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let msecs = try container.decode(Int.self)
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value = Date(timeIntervalSince1970: TimeInterval(msecs) / 1000)
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}
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}
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public func encode(to encoder: Encoder) throws {
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var container = encoder.singleValueContainer()
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if let value = value {
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let interval = value.timeIntervalSince1970
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try container.encode(Int(interval * 1000))
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} else {
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let dictionary = ServerValue.timestamp() as! [String: String]
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try container.encode(dictionary)
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}
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}
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}
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