package com.devone.haute.ui.widget;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.support.design.widget.AppBarLayout;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.devone.haute.R;
import com.devone.haute.util.Utils;

public class UndoTaskLayout extends LinearLayout {

    ViewGroup parent;
    int duration;

    TextView messageView;
    Button actionView;

    private boolean firstLayout = true;


    public UndoTaskLayout(Context context) {
        this(context, null);
    }

    public UndoTaskLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public UndoTaskLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

        init(context, attrs);
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public UndoTaskLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);

        init(context, attrs);
    }

    private void init(Context context, AttributeSet attrs) {

        // LayoutInflater.from(context).inflate(R.layout.undo_layout, this, true);
    }



    public static UndoTaskLayout make(View view, int i) {

        ViewGroup parent = findSuitableParent(view);

        UndoTaskLayout undoTaskLayout = (UndoTaskLayout) LayoutInflater
                .from(parent.getContext()).inflate(R.layout.undo_layout, parent, false);

        undoTaskLayout.parent = parent;
        undoTaskLayout.duration = i;

        ViewCompat.setElevation(undoTaskLayout, Utils.dpToPx(view.getContext(), 2));

        return undoTaskLayout;
    }

    private static ViewGroup findSuitableParent(View view) {

        ViewGroup fallback = null;

        do {
            if (view instanceof CoordinatorLayout) {

                // We've found a CoordinatorLayout, use it
                return (ViewGroup) view;
            } else if (view instanceof FrameLayout) {

                if (view.getId() == android.R.id.content) {
                    // If we've hit the decor content view, then we didn't find a CoL in the
                    // hierarchy, so use it.
                    return (ViewGroup) view;
                } else {
                    // It's not the content view but we'll use it as our fallback
                    fallback = (ViewGroup) view;
                }
            }

            if (view != null) {

                // Else, we will loop and crawl up the view hierarchy and try to find a parent
                final ViewParent parent = view.getParent();
                view = parent instanceof View ? (View) parent : null;
            }

        } while (view != null);

        // If we reach here then we didn't find a CoL or a suitable content view so we'll fallback
        return fallback;
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        messageView = (TextView) findViewById(R.id.undo_text);
        actionView = (Button) findViewById(R.id.undo_action);
    }


    public UndoTaskLayout setAction(final View.OnClickListener listener) {
        actionView.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {

                listener.onClick(v);

                dismiss();
            }
        });

        return this;
    }

    public void dismiss() {
        parent.removeView(this);
    }

    public void show() {

        if (this.getParent() == null) {

            final ViewGroup.LayoutParams lp = this.getLayoutParams();

            if (lp instanceof CoordinatorLayout.LayoutParams) {
                // If our LayoutParams are from a CoordinatorLayout, we'll setup our Behavior

                AppBarLayout appBarLayout = findFirstAppBarInParent(parent);
                Behavior behavior = new Behavior();

                ((CoordinatorLayout.LayoutParams) lp).setAnchorId(appBarLayout.getId());
                ((CoordinatorLayout.LayoutParams) lp).gravity = Gravity.BOTTOM;
                ((CoordinatorLayout.LayoutParams) lp).anchorGravity = Gravity.BOTTOM;
                ((CoordinatorLayout.LayoutParams) lp).setBehavior(behavior);
            }

            parent.addView(this);
        }

        if (ViewCompat.isLaidOut(this)) {

            // TODO animate
        } else firstLayout = true;
    }

    private AppBarLayout findFirstAppBarInParent(ViewGroup parent) {

        AppBarLayout appBar = null;

        for (int i = 0; i < parent.getChildCount(); i++) { //attach listener to all buttons

            View v = parent.getChildAt(i);
            if (v instanceof AppBarLayout) appBar = (AppBarLayout) v;
        }

        if (appBar != null) return appBar;

        throw new IllegalStateException("Cant find an AppBar");
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);

        if (firstLayout) {

            // TODO animate
            firstLayout = false;
        }
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
    }

    class Behavior extends CoordinatorLayout.Behavior<UndoTaskLayout> {

    }
}