Add proposal file

FirebaseSharedSwift/Sources/FirebaseInternalLog.swift

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+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+import OSLog
+
+protocol FirebaseInternalLog {
+  func notice(_ message: String)
+
+  func info(_ message: String)
+
+  func debug(_ message: String)
+
+  func warning(_ message: String)
+
+  func error(_ message: String)
+
+  func fault(_ message: String)
+}
+
+extension OSLog: FirebaseInternalLog {
+  func notice(_ message: String) {
+    os_log("%s", log: self, type: .default, message)
+  }
+
+  func info(_ message: String) {
+    os_log("%s", log: self, type: .info, message)
+  }
+
+  func debug(_ message: String) {
+    os_log("%s", log: self, type: .debug, message)
+  }
+
+  func warning(_ message: String) {
+    os_log("%s", log: self, type: .default, message)
+  }
+
+  func error(_ message: String) {
+    os_log("%s", log: self, type: .error, message)
+  }
+
+  func fault(_ message: String) {
+    os_log("%s", log: self, type: .fault, message)
+  }
+}
+
+@available(macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0, *)
+class FirebaseInternalLogger: FirebaseInternalLog {
+  private let logger: Logger
+
+  required init(subsystem: String, category: String) {
+    logger = Logger(subsystem: subsystem, category: category)
+  }
+
+  func notice(_ message: String) {
+    logger.notice("\(message)")
+  }
+
+  func info(_ message: String) {
+    logger.info("\(message)")
+  }
+
+  func debug(_ message: String) {
+    logger.debug("\(message)")
+  }
+
+  func warning(_ message: String) {
+    logger.warning("\(message)")
+  }
+
+  func error(_ message: String) {
+    logger.error("\(message)")
+  }
+
+  func fault(_ message: String) {
+    logger.fault("\(message)")
+  }
+}

FirebaseSharedSwift/Sources/FirebaseLogger.swift

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+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+import OSLog
+
+public struct FirebaseProduct {
+  var name: String
+
+  public init(name: String) {
+    self.name = name
+  }
+}
+
+public class FirebaseLogger {
+  let subsystem: String = "com.google.firebase"
+
+  let firebaseProduct: FirebaseProduct
+
+  private lazy var logger: FirebaseInternalLog = {
+    if #available(macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0, *) {
+      return FirebaseInternalLogger(subsystem: subsystem, category: firebaseProduct.name)
+    } else {
+      return OSLog(subsystem: subsystem, category: firebaseProduct.name)
+    }
+  }()
+
+  public init(firebaseProduct: FirebaseProduct) {
+    self.firebaseProduct = firebaseProduct
+  }
+
+  public func notice(_ message: String) {
+    logger.notice(message)
+  }
+
+  public func info(_ message: String) {
+    logger.info(message)
+  }
+
+  public func debug(_ message: String) {
+    logger.debug(message)
+  }
+
+  public func warning(_ message: String) {
+    logger.warning(message)
+  }
+
+  public func error(_ message: String) {
+    logger.error(message)
+  }
+
+  public func fault(_ message: String) {
+    logger.fault(message)
+  }
+}

FirebaseSharedSwift/Tests/FirebaseLoggerTests.swift

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+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import FirebaseSharedSwift
+import Foundation
+
+// MARK: - Test Suite
+
+import XCTest
+
+extension FirebaseProduct {
+  static let testLogger = FirebaseProduct(name: "firebase_logger_test")
+}
+
+class TestFirebaseLogger: XCTestCase {
+  func testLoggerUsage() {
+    let testLogger = FirebaseLogger(firebaseProduct: FirebaseProduct.testLogger)
+    testLogger.debug("Set up successfully!")
+  }
+}