package nodomain.freeyourgadget.gadgetbridge.womp;

import android.Manifest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.Fragment;

import org.json.JSONObject;

import nodomain.freeyourgadget.gadgetbridge.R;
import nodomain.freeyourgadget.gadgetbridge.activities.ControlCenterv2;

/**
 * 分拣员工作台：与手环功能相互独立，未登录也可留在本页。
 */
public class WompWorkbenchFragment extends Fragment implements WompJsBridge.Host {
    private WebView webView;
    private String pendingScanCb;
    private ActivityResultLauncher<Intent> scanLauncher;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        scanLauncher = registerForActivityResult(
                new ActivityResultContracts.StartActivityForResult(),
                result -> {
                    if (pendingScanCb == null) {
                        return;
                    }
                    String code = "";
                    if (result.getResultCode() == Activity.RESULT_OK && result.getData() != null) {
                        code = result.getData().getStringExtra(WompScanActivity.EXTRA_CODE);
                    }
                    String script = "window.__wompCb && window.__wompCb("
                            + JSONObject.quote(pendingScanCb) + ",true,"
                            + JSONObject.quote(code == null ? "" : code) + ")";
                    evalJs(script);
                    pendingScanCb = null;
                });
    }

    @SuppressLint("SetJavaScriptEnabled")
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
                             @Nullable Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.fragment_womp_workbench, container, false);
        webView = root.findViewById(R.id.womp_webview);
        WebSettings s = webView.getSettings();
        s.setJavaScriptEnabled(true);
        s.setDomStorageEnabled(true);
        s.setAllowFileAccess(true);
        s.setAllowContentAccess(true);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            s.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
        }
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageFinished(WebView view, String url) {
                if (url != null && (url.endsWith("home.html") || url.endsWith("login.html"))) {
                    view.clearHistory();
                }
            }
        });
        webView.setWebChromeClient(new WebChromeClient());
        webView.addJavascriptInterface(new WompJsBridge(requireActivity(), this), "Womp");
        String page = WompSession.isLoggedIn(requireContext()) ? "home.html" : "login.html";
        webView.loadUrl("file:///android_asset/womp/" + page);
        ensureLocationPermission();
        return root;
    }

    private void ensureLocationPermission() {
        if (ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
            requestPermissions(new String[]{
                    Manifest.permission.ACCESS_FINE_LOCATION,
                    Manifest.permission.ACCESS_COARSE_LOCATION
            }, 7103);
        }
    }

    public boolean goBack() {
        if (webView != null && webView.canGoBack()) {
            webView.goBack();
            return true;
        }
        return false;
    }

    @Override
    public void scan(String callbackId) {
        pendingScanCb = callbackId;
        if (ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED) {
            requestPermissions(new String[]{Manifest.permission.CAMERA}, 7102);
            return;
        }
        scanLauncher.launch(new Intent(requireContext(), WompScanActivity.class));
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 7102 && pendingScanCb != null
                && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            scanLauncher.launch(new Intent(requireContext(), WompScanActivity.class));
        } else if (requestCode == 7102 && pendingScanCb != null) {
            evalJs("window.__wompCb && window.__wompCb("
                    + JSONObject.quote(pendingScanCb) + ",true,\"\")");
            pendingScanCb = null;
        }
    }

    @Override
    public void closePage() {
        if (getActivity() instanceof ControlCenterv2) {
            ((ControlCenterv2) getActivity()).showBandTab();
        }
    }

    @Override
    public void onLoggedIn() {
        WompKeepAliveService.start(requireContext());
        if (webView != null) {
            webView.loadUrl("file:///android_asset/womp/home.html");
        }
    }

    @Override
    public void onLogout() {
        if (webView != null) {
            webView.loadUrl("file:///android_asset/womp/login.html");
        }
    }

    @Override
    public void evalJs(String script) {
        if (webView != null && getActivity() != null) {
            getActivity().runOnUiThread(() -> {
                if (webView != null) {
                    webView.evaluateJavascript(script, null);
                }
            });
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        if (webView != null) {
            webView.onResume();
        }
    }

    @Override
    public void onPause() {
        if (webView != null) {
            webView.onPause();
        }
        super.onPause();
    }

    @Override
    public void onDestroyView() {
        if (webView != null) {
            webView.destroy();
            webView = null;
        }
        super.onDestroyView();
    }
}