//
//  CommonHelper.swift
//  Sirani
//
//  Created by Hendi on 04/01/24.
//  Copyright © 2024 PT. Mitra Sinerji Teknoindo. All rights reserved.
//

import Foundation
import UIKit

class CommonHelper {
    
    class func showNoConnection(in viewController: UIViewController) {
        let alertNoConnection = UIAlertController(
            title: Constants.instance.ALERT_NO_CONNECTION_TITLE,
            message: Constants.instance.ALERT_NO_CONNECTION_MSG,
            preferredStyle: .alert
        )
        alertNoConnection.addAction(
            UIAlertAction(title: Constants.instance.ALERT_NO_CONNECTION_YESS, style: .default, handler: nil)
        )
        viewController.present(alertNoConnection, animated: true, completion: nil)
    }
    
    class func showNotAllowConnection(in viewController: UIViewController) {
        let alertNoConnection = UIAlertController(
            title: Constants.instance.ALERT_NO_CONNECTION_TITLE,
            message: Constants.instance.ALERT_NOT_ALLOW_MSG,
            preferredStyle: .alert
        )
        alertNoConnection.addAction(
            UIAlertAction(title: Constants.instance.ALERT_NO_CONNECTION_YESS, style: .default, handler: nil)
        )
        viewController.present(alertNoConnection, animated: true, completion: nil)
    }
    
    class func formatDate(from dateString: String) -> String {
        let trimmed = dateString.trimmingCharacters(in: .whitespacesAndNewlines)
        if trimmed.isEmpty || trimmed.lowercased() == "null" || trimmed == "-" ||
           trimmed.hasPrefix("0001") || trimmed.hasPrefix("0000") || trimmed.hasPrefix("1970-01-01") {
            return "-"
        }
        
        let formats = [
            "yyyy-MM-dd HH:mm:ss",
            "yyyy-MM-dd'T'HH:mm:ss.SSSZ",
            "yyyy-MM-dd'T'HH:mm:ssZ",
            "yyyy-MM-dd",
            "dd-MM-yyyy HH:mm:ss",
            "dd/MM/yyyy HH:mm:ss",
            "dd-MM-yyyy",
            "dd/MM/yyyy",
            "yyyy/MM/dd",
            "dd MMM yyyy",
            "dd MMMM yyyy"
        ]
        
        let inputFormatter = DateFormatter()
        inputFormatter.locale = Locale(identifier: "id_ID")
        
        let calendar = Calendar.current
        
        for fmt in formats {
            inputFormatter.dateFormat = fmt
            if let date = inputFormatter.date(from: trimmed) {
                let year = calendar.component(.year, from: date)
                if year < 1970 {
                    return "-"
                }
                let outputFormatter = DateFormatter()
                outputFormatter.locale = Locale(identifier: "id_ID")
                outputFormatter.dateFormat = "dd MMM yyyy"
                return outputFormatter.string(from: date)
            }
        }
        
        if trimmed.count >= 10 {
            let prefix10 = String(trimmed.prefix(10))
            for fmt in ["yyyy-MM-dd", "dd-MM-yyyy", "dd/MM/yyyy", "yyyy/MM/dd"] {
                inputFormatter.dateFormat = fmt
                if let date = inputFormatter.date(from: prefix10) {
                    let year = calendar.component(.year, from: date)
                    if year < 1970 {
                        return "-"
                    }
                    let outputFormatter = DateFormatter()
                    outputFormatter.locale = Locale(identifier: "id_ID")
                    outputFormatter.dateFormat = "dd MMM yyyy"
                    return outputFormatter.string(from: date)
                }
            }
        }
        
        return trimmed
    }
}