80 lines
2.2 KiB
Swift
80 lines
2.2 KiB
Swift
//
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// SyncLogger.swift
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// SportsTime
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//
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// File-based logger for sync operations.
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// Writes to Documents/sync_log.txt for viewing in Settings.
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//
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import Foundation
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final class SyncLogger: @unchecked Sendable {
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static let shared = SyncLogger()
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private let fileURL: URL
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private let maxLines = 500
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private let queue = DispatchQueue(label: "com.88oakapps.SportsTime.synclogger")
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private init() {
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let docs = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
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fileURL = docs.appendingPathComponent("sync_log.txt")
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}
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// MARK: - Public API
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func log(_ message: String) {
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let timestamp = ISO8601DateFormatter().string(from: Date())
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let line = "[\(timestamp)] \(message)\n"
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// Also print to console
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print(message)
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queue.async { [weak self] in
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self?.appendToFile(line)
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}
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}
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func readLog() -> String {
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guard FileManager.default.fileExists(atPath: fileURL.path) else {
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return "No sync logs yet."
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}
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return (try? String(contentsOf: fileURL, encoding: .utf8)) ?? "Failed to read log."
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}
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func clearLog() {
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queue.async { [weak self] in
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guard let self = self else { return }
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try? FileManager.default.removeItem(at: self.fileURL)
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}
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}
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// MARK: - Private
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private func appendToFile(_ line: String) {
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if !FileManager.default.fileExists(atPath: fileURL.path) {
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FileManager.default.createFile(atPath: fileURL.path, contents: nil)
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}
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guard let handle = try? FileHandle(forWritingTo: fileURL) else { return }
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defer { try? handle.close() }
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handle.seekToEndOfFile()
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if let data = line.data(using: .utf8) {
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handle.write(data)
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}
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// Trim if too large
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trimIfNeeded()
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}
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private func trimIfNeeded() {
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guard let content = try? String(contentsOf: fileURL, encoding: .utf8) else { return }
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let lines = content.components(separatedBy: "\n")
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if lines.count > maxLines {
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let trimmed = lines.suffix(maxLines).joined(separator: "\n")
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try? trimmed.write(to: fileURL, atomically: true, encoding: .utf8)
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}
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}
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}
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