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diff --git a/Shared/Logging/Logging.swift b/Shared/Logging/Logging.swift
index 18e1a16..9d8343c 100644
--- a/Shared/Logging/Logging.swift
+++ b/Shared/Logging/Logging.swift
@@ -1,69 +1,104 @@
-//
-// Logging.swift
-// WriteFreely-MultiPlatform
-//
-// Created by Angelo Stavrow on 2022-06-25.
-//
+// Credit for much of this class: https://steipete.com/posts/logging-in-swift/
import Foundation
import os
import OSLog
protocol LogWriter {
func log(_ message: String, withSensitiveInfo privateInfo: String?, level: OSLogType)
func logCrashAndSetFlag(error: Error)
}
@available(iOS 15, *)
protocol LogReader {
func fetchLogs() -> [String]
}
final class Logging {
private let logger: Logger
private let subsystem = Bundle.main.bundleIdentifier!
init(for category: String = "") {
self.logger = Logger(subsystem: subsystem, category: category)
}
}
extension Logging: LogWriter {
func log(
_ message: String,
withSensitiveInfo privateInfo: String? = nil,
level: OSLogType = .default
) {
if let privateInfo = privateInfo {
logger.log(level: level, "\(message): \(privateInfo, privacy: .sensitive)")
} else {
logger.log(level: level, "\(message)")
}
}
func logCrashAndSetFlag(error: Error) {
let errorDescription = error.localizedDescription
UserDefaults.shared.set(true, forKey: WFDefaults.didHaveFatalError)
UserDefaults.shared.set(errorDescription, forKey: WFDefaults.fatalErrorDescription)
logger.log(level: .error, "\(errorDescription)")
fatalError(errorDescription)
}
}
extension Logging: LogReader {
@available(iOS 15, *)
func fetchLogs() -> [String] {
- return [
- "This is line 1",
- "This is line 2",
- "This is line 3",
- "This is line 4"
- ]
+ var logs: [String] = []
+
+ do {
+ let osLog = try getLogEntries()
+ for logEntry in osLog {
+ let formattedEntry = formatEntry(logEntry)
+ logs.append(formattedEntry)
+ }
+ } catch {
+ logs.append("Could not fetch logs")
+ }
+
+ return logs
+ }
+
+ @available(iOS 15, *)
+ private func getLogEntries() throws -> [OSLogEntryLog] {
+ let logStore = try OSLogStore(scope: .currentProcessIdentifier)
+ let oneHourAgo = logStore.position(date: Date().addingTimeInterval(-3600))
+ let allEntries = try Array(logStore.__entriesEnumerator(position: oneHourAgo, predicate: nil))
+ return allEntries
+ .compactMap { $0 as? OSLogEntryLog }
+ .filter { $0.subsystem == subsystem }
+ }
+
+ @available(iOS 15, *)
+ private func formatEntry(_ logEntry: OSLogEntryLog) -> String {
+ /// The desired format is:
+ /// `date [process/category] LEVEL: composedMessage (threadIdentifier)`
+ var level: String = ""
+ switch logEntry.level {
+ case .debug:
+ level = "DEBUG"
+ case .info:
+ level = "INFO"
+ case .notice:
+ level = "NOTICE"
+ case .error:
+ level = "ERROR"
+ case .fault:
+ level = "FAULT"
+ default:
+ level = "UNDEFINED"
+ }
+ // swiftlint:disable:next line_length
+ return "\(logEntry.date) [\(logEntry.process)/\(logEntry.category)] \(level): \(logEntry.composedMessage) (\(logEntry.threadIdentifier))"
}
}

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