package net.kdt.pojavlaunch.prefs.screens;

import static net.kdt.pojavlaunch.Architecture.is32BitsDevice;
import static net.kdt.pojavlaunch.Tools.getTotalDeviceMemory;

import android.os.Bundle;
import android.widget.TextView;

import androidx.activity.result.ActivityResultLauncher;
import androidx.annotation.Nullable;
import androidx.preference.EditTextPreference;
import androidx.preference.Preference;
import androidx.preference.SwitchPreference;

import net.kdt.pojavlaunch.R;
import net.kdt.pojavlaunch.Tools;
import net.kdt.pojavlaunch.contracts.OpenDocumentWithExtension;
import net.kdt.pojavlaunch.multirt.MultiRTConfigDialog;
import net.kdt.pojavlaunch.prefs.CustomSeekBarPreference;
import net.kdt.pojavlaunch.prefs.LauncherPreferences;

public class LauncherPreferenceJavaFragment extends LauncherPreferenceFragment {
    private MultiRTConfigDialog mDialogScreen;
    private SwitchPreference mSwitchAutoJRE;
    private final ActivityResultLauncher<Object> mVmInstallLauncher =
            registerForActivityResult(new OpenDocumentWithExtension("xz"), (data)->{
                if(data != null) Tools.installRuntimeFromUri(getContext(), data);
            });

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mSwitchAutoJRE = findPreference("disable_autojre_select");
        mSwitchAutoJRE.setSummary("Stops automatic selection of which runtime to use in \"" + getString(R.string.main_install_jar_file) + "\"");

    }

    @Override
    public void onCreatePreferences(Bundle b, String str) {
        int ramAllocation = LauncherPreferences.PREF_RAM_ALLOCATION;
        // Triggers a write for some reason
        addPreferencesFromResource(R.xml.pref_java);

        CustomSeekBarPreference memorySeekbar = requirePreference("allocation",
                CustomSeekBarPreference.class);

        int maxRAM;
        int deviceRam = getTotalDeviceMemory(memorySeekbar.getContext());

        if(is32BitsDevice() || deviceRam < 2048) maxRAM = Math.min(1024, deviceRam);
        else maxRAM = deviceRam - (deviceRam < 3064 ? 800 : 1024); //To have a minimum for the device to breathe

        memorySeekbar.setMaxKeepIncrement(maxRAM);
        memorySeekbar.setValue(ramAllocation);
        memorySeekbar.setSuffix(" MB");

        EditTextPreference editJVMArgs = findPreference("javaArgs");
        if (editJVMArgs != null) {
            editJVMArgs.setOnBindEditTextListener(TextView::setSingleLine);
        }

        // Nexus: JVM args preset -> writes the preset into the global Java arguments
        androidx.preference.ListPreference presetPref = requirePreference("nexus_jvm_preset", androidx.preference.ListPreference.class);
        presetPref.setOnPreferenceChangeListener((pref, newValue) -> {
            String args = net.kdt.pojavlaunch.nexus.NexusSettings.presetArgs((String) newValue);
            if (args == null) return false;
            if (editJVMArgs != null) editJVMArgs.setText(args);
            else LauncherPreferences.DEFAULT_PREF.edit().putString("javaArgs", args).apply();
            android.widget.Toast.makeText(pref.getContext(), R.string.nexus_preset_applied, android.widget.Toast.LENGTH_SHORT).show();
            return false; // not persisted, it only fills javaArgs
        });

        requirePreference("install_jre").setOnPreferenceClickListener(preference->{
            openMultiRTDialog();
            return true;
        });
    }

    private void openMultiRTDialog() {
        if (mDialogScreen == null) {
            mDialogScreen = new MultiRTConfigDialog();
            mDialogScreen.prepare(getContext(), mVmInstallLauncher);
        }
        mDialogScreen.show();
    }
}