import Foundation

enum FeishuDateParser {
    static func parse(_ value: Any?) -> Date? {
        switch value {
        case let milliseconds as Double:
            return Date(timeIntervalSince1970: milliseconds / 1000.0)
        case let milliseconds as Int:
            return Date(timeIntervalSince1970: Double(milliseconds) / 1000.0)
        case let string as String:
            if let milliseconds = Double(string) {
                return Date(timeIntervalSince1970: milliseconds / 1000.0)
            }
            let formatter = ISO8601DateFormatter()
            formatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
            if let date = formatter.date(from: string) {
                return date
            }
            formatter.formatOptions = [.withInternetDateTime]
            return formatter.date(from: string)
        default:
            return nil
        }
    }
}