package com.shukria.kiosklauncher.ui

import android.content.Context
import android.os.Bundle
import android.text.TextUtils
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.EditText
import android.widget.ImageButton
import android.widget.Toast
import androidx.appcompat.widget.SwitchCompat
import androidx.fragment.app.Fragment
import com.google.android.material.button.MaterialButton
import com.shukria.kiosklauncher.R
import com.shukria.kiosklauncher.service.MQTTService
import com.shukria.kiosklauncher.util.WifiController

class SettingsFragment : Fragment() {

    private val TAG = "SettingsFragment"

    private lateinit var btnBack: ImageButton
    private lateinit var editHeartbeatInterval: EditText
    private lateinit var switchWifiCheck: SwitchCompat
    private lateinit var btnSave: MaterialButton

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val view = inflater.inflate(R.layout.fragment_settings, container, false)

        btnBack = view.findViewById(R.id.btn_back)
        editHeartbeatInterval = view.findViewById(R.id.edit_heartbeat_interval)
        switchWifiCheck = view.findViewById(R.id.switch_wifi_check)
        btnSave = view.findViewById(R.id.btn_save)

        // Load existing preferences
        val prefs = requireContext().getSharedPreferences("settings_prefs", Context.MODE_PRIVATE)
        val savedSeconds = prefs.getInt("heartbeat_interval_seconds", -1)
        if (savedSeconds != -1) {
            editHeartbeatInterval.setText(savedSeconds.toString())
        } else {
            editHeartbeatInterval.setText("30") // Default to 30 seconds to prevent empty validation failure
        }

        val wifiCheckSaved = prefs.getBoolean("wifi_check_enabled", false)
        Log.i(TAG, "Loading Wi-Fi check preference: wifi_check_enabled=$wifiCheckSaved")
        switchWifiCheck.isChecked = wifiCheckSaved

        // Save Wi-Fi check preference IMMEDIATELY when toggled by user click
        switchWifiCheck.setOnClickListener {
            val isChecked = switchWifiCheck.isChecked
            Log.i(TAG, "Wi-Fi check toggle clicked by user. New state: $isChecked")
            prefs.edit().putBoolean("wifi_check_enabled", isChecked).commit()
            Log.i(TAG, "Wi-Fi check preference saved: $isChecked (commit)")

            if (isChecked) {
                Log.i(TAG, "Wi-Fi check enabled – calling WifiController.disableWifi()")
                WifiController.disableWifi(requireContext())
            } else {
                Log.i(TAG, "Wi-Fi check disabled – calling WifiController.allowWifi()")
                WifiController.allowWifi(requireContext())
            }
        }

        btnBack.setOnClickListener {
            parentFragmentManager.popBackStack()
        }

        btnSave.setOnClickListener {
            val intervalStr = editHeartbeatInterval.text.toString().trim()
            if (TextUtils.isEmpty(intervalStr)) {
                Toast.makeText(requireContext(), "Please enter a valid interval in seconds", Toast.LENGTH_SHORT).show()
                return@setOnClickListener
            }

            try {
                val seconds = intervalStr.toInt()
                if (seconds <= 0) {
                    Toast.makeText(requireContext(), "Interval must be greater than 0", Toast.LENGTH_SHORT).show()
                    return@setOnClickListener
                }

                // Save heartbeat interval (Wi-Fi check is already saved via toggle listener)
                prefs.edit()
                    .putInt("heartbeat_interval_seconds", seconds)
                    .apply()

                Log.i(TAG, "Heartbeat interval saved: ${seconds}s")

                // Trigger MQTT service update
                MQTTService.updateHeartbeatInterval(requireContext())

                Toast.makeText(requireContext(), "Settings saved successfully", Toast.LENGTH_SHORT).show()
                parentFragmentManager.popBackStack()

            } catch (e: NumberFormatException) {
                Toast.makeText(requireContext(), "Invalid number format", Toast.LENGTH_SHORT).show()
            }
        }

        return view
    }
}