Swiftgram/submodules/TelegramCallsUI/Sources/GroupCallLogs.swift

import Foundation
import TelegramCore

public func groupCallLogsPath(account: Account) -> String {
    return account.basePath + "/group-calls"
}

func cleanupGroupCallLogs(account: Account) {
    let path = groupCallLogsPath(account: account)
    let fileManager = FileManager.default
    if !fileManager.fileExists(atPath: path, isDirectory: nil) {
        try? fileManager.createDirectory(atPath: path, withIntermediateDirectories: true, attributes: nil)
    }
    
    var oldest: [(URL, Date)] = []
    var count = 0
    if let enumerator = FileManager.default.enumerator(at: URL(fileURLWithPath: path), includingPropertiesForKeys: [.contentModificationDateKey], options: [.skipsHiddenFiles, .skipsSubdirectoryDescendants], errorHandler: nil) {
        for url in enumerator {
            if let url = url as? URL {
                if let date = (try? url.resourceValues(forKeys: Set([.contentModificationDateKey])))?.contentModificationDate {
                    oldest.append((url, date))
                    count += 1
                }
            }
        }
    }
    let callLogsLimit = 20
    if count > callLogsLimit {
        oldest.sort(by: { $0.1 > $1.1 })
        while oldest.count > callLogsLimit {
            try? fileManager.removeItem(atPath: oldest[oldest.count - 1].0.path)
            oldest.removeLast()
        }
    }
}

public func allocateCallLogPath(account: Account) -> String {
    let path = groupCallLogsPath(account: account)
    
    let _ = try? FileManager.default.createDirectory(at: URL(fileURLWithPath: path), withIntermediateDirectories: true, attributes: nil)
    
    let name = "log-\(Date())".replacingOccurrences(of: "/", with: "_").replacingOccurrences(of: ":", with: "_")
    
    return "\(path)/\(name).log"
}