package core.notifications.data

import android.app.NotificationChannel
import android.app.NotificationManager
import android.app.PendingIntent
import android.content.Context
import android.content.Intent
import android.os.Build
import androidx.core.app.NotificationCompat

object NotificationHelper {
    private const val CHANNEL_ID = "fork_notifications_channel"

    fun showNotification(context: Context, title: String?, body: String?, type: String?, chatId: String? = null, notificationId: Int? = null, totalCount: Int = 0) {
        val notificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

        val finalNotificationId = notificationId ?: (System.currentTimeMillis() % Int.MAX_VALUE).toInt()

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val channel = NotificationChannel(
                CHANNEL_ID,
                "Fork Messenger Notifications",
                NotificationManager.IMPORTANCE_HIGH
            ).apply {
                description = "Chat and system notifications"
            }
            notificationManager.createNotificationChannel(channel)
        }

        // Find our launcher activity via package manager to avoid static dependency on MainActivity
        val intent = context.packageManager.getLaunchIntentForPackage(context.packageName)?.apply {
            action = Intent.ACTION_MAIN
            addCategory(Intent.CATEGORY_LAUNCHER)
            addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP)
            putExtra("type", type)
            putExtra("chatId", chatId)
        } ?: return
        
        val pendingIntent = PendingIntent.getActivity(
            context, System.currentTimeMillis().toInt(), intent,
            PendingIntent.FLAG_UPDATE_CURRENT or (if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) PendingIntent.FLAG_IMMUTABLE else 0)
        )

        val notificationBuilder = NotificationCompat.Builder(context, CHANNEL_ID)
            .setSmallIcon(android.R.drawable.ic_dialog_info)
            .setContentTitle(title)
            .setContentText(body)
            .setAutoCancel(true)
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setDefaults(NotificationCompat.DEFAULT_ALL)
            .setNumber(totalCount)
            .setContentIntent(pendingIntent)

        notificationManager.notify(finalNotificationId, notificationBuilder.build())
    }
}