//
//  Logging.swift
//  Tusker
//
//  Created by Shadowfacts on 10/10/22.
//  Copyright © 2022 Shadowfacts. All rights reserved.
//

import Foundation
import OSLog

struct Logging {
    private init() {}
    
    static let general = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "General")
    
    static func getLogData() -> Data? {
        do {
            let store = try OSLogStore(scope: .currentProcessIdentifier)
            // past hour
            let position = store.position(date: Date().addingTimeInterval(-60 * 60))
            let entries = try store.getEntries(at: position, matching: NSPredicate(format: "subsystem = %@", Bundle.main.bundleIdentifier!))
            var data = Data()
            for entry in entries {
                guard let entry = entry as? OSLogEntryLog else {
                    continue
                }
                data.append(contentsOf: entry.date.formatted(.iso8601).utf8)
                data.append(32) // ' '
                data.append(91) // '['
                data.append(contentsOf: entry.category.utf8)
                data.append(93) // ']'
                data.append(32) // ' '
                data.append(contentsOf: entry.composedMessage.utf8)
                data.append(10) // '\n'
            }
            return data
        } catch {
            return nil
        }
    }
}