package com.bottomsheetbehavior;

import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.view.Gravity;
import android.view.View;
import android.widget.FrameLayout;

import androidx.appcompat.widget.Toolbar;
import androidx.coordinatorlayout.widget.CoordinatorLayout;

import com.facebook.react.uimanager.PixelUtil;
import com.facebook.react.uimanager.ViewGroupManager;
import com.facebook.react.uimanager.ThemedReactContext;
import com.facebook.react.uimanager.annotations.ReactProp;
import com.google.android.material.appbar.AppBarLayout;

public class MergedAppBarLayoutManager extends ViewGroupManager<AppBarLayout> {

    private final static String REACT_CLASS = "BSBMergedAppBarLayout";

    private String mMergedColor;
    private String mToolbarColor;
    private String mStatusBarColor;

    private View mergedView;

    @Override
    public String getName() {
        return REACT_CLASS;
    }

    private MergedAppBarLayoutBehavior mergedBehavior;

    @Override
    public AppBarLayout createViewInstance(ThemedReactContext context) {
        AppBarLayout view = new AppBarLayout(context);

        int width = CoordinatorLayout.LayoutParams.MATCH_PARENT;
        int height = CoordinatorLayout.LayoutParams.WRAP_CONTENT;
        CoordinatorLayout.LayoutParams params = new CoordinatorLayout.LayoutParams(width, height);
        params.setBehavior(new MergedAppBarLayoutBehavior(context, null));
        view.setLayoutParams(params);
        // Set tag to match on ScrollAwareFABBehavior.
        view.setTag("modal-appbar");
        mergedBehavior = MergedAppBarLayoutBehavior.from(view);
        return view;
    }

    @ReactProp(name = "translucent")
    public void setTranslucent(AppBarLayout view, boolean translucent) {
        if (Build.VERSION.SDK_INT >= 21 && translucent) {
            int statusBarHeight = getStatusBarHeight(view.getContext());
            CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) view.getLayoutParams();
            params.setMargins(0, statusBarHeight, 0, 0);
        }
    }

    @ReactProp(name = "barStyle")
    public void setBarStyle(AppBarLayout view, String barStyle) {
        mergedBehavior.setBarStyle(barStyle.equals("dark-content") ? View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR : 0);
    }

    @ReactProp(name = "barStyleTransparent")
    public void setBarStyleTransparent(AppBarLayout view, String barStyle) {
        mergedBehavior.setBarStyleTransparent(barStyle.equals("dark-content") ? View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR : 0);
    }

    @ReactProp(name = "mergedColor")
    public void setMergedColor(AppBarLayout view, String mergedColor) {
        mMergedColor = mergedColor;
        if (mergedView != null) {
            setMergedBackgroundColor();
        }
    }

    @ReactProp(name = "toolbarColor")
    public void setToolbarColor(AppBarLayout view, String toolbarColor) {
        mToolbarColor = toolbarColor;
        int color = Color.parseColor(mToolbarColor);
        mergedBehavior.setBackgroundColor(color);
        if (mergedBehavior.getFullbackGroundColor() != android.R.color.transparent) {
            mergedBehavior.setFullBackGroundColor(color);
        }
    }

    @ReactProp(name = "statusBarColor")
    public void setStatusBarColor(AppBarLayout view, String statusBarColor) {
        mStatusBarColor = statusBarColor;
        mergedBehavior.setStatusBarColor(Color.parseColor(mStatusBarColor));
        if (mergedBehavior.getFullbackGroundColor() != android.R.color.transparent) {
            mergedBehavior.setStatusBarBackgroundVisible(true);
        }
    }

    @ReactProp(name = "height")
    public void setHeight(AppBarLayout view, int height) {
        CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) view.getLayoutParams();
        params.height = (int) PixelUtil.toPixelFromDIP(height);
        view.setLayoutParams(params);
    }

    @Override
    public void addView(AppBarLayout parent, View child, int index) {
        if (child instanceof Toolbar) {
            FrameLayout frame = createFrameLayout(parent.getContext());
            mergedView = createMergedView(parent.getContext());
            setMergedBackgroundColor();

            frame.addView(mergedView);
            parent.addView(frame);
            Toolbar toolbar = (Toolbar) child;
            frame.addView(toolbar);
            mergedBehavior.setToolbar(toolbar);
            mergedBehavior.setMergedView(mergedView);
        }
    }

    private FrameLayout createFrameLayout(Context context) {
        int width = CoordinatorLayout.LayoutParams.MATCH_PARENT;
        int height = CoordinatorLayout.LayoutParams.MATCH_PARENT;

        CoordinatorLayout.LayoutParams params = new CoordinatorLayout.LayoutParams(width, height);

        FrameLayout frame = new FrameLayout(context);
        frame.setLayoutParams(params);
        return frame;
    }

    private View createMergedView(Context context) {
        int width = CoordinatorLayout.LayoutParams.MATCH_PARENT;
        View mergedView = new View(context);
        FrameLayout.LayoutParams backgroundParams = new FrameLayout.LayoutParams(width, 0);
        backgroundParams.gravity = Gravity.BOTTOM;
        mergedView.setLayoutParams(backgroundParams);
        return mergedView;
    }

    private void setMergedBackgroundColor() {
        if (mMergedColor != null) {
            mergedView.setBackgroundColor(Color.parseColor(mMergedColor));
        }
    }

    private int getStatusBarHeight(Context context) {
        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            return context.getResources().getDimensionPixelSize(resourceId);
        }
        return 0;
    }
}