package nextrek.widgets.rubberlist;

import nextrek.lib.R;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;

public class RubberHeaderController extends RubberControllerBase {

    private TextView mRefreshViewText;
    private ImageView mArrowImageView;
    private ProgressBar mRefreshViewProgress;

    private ImageView mNewDataImageView;

    public RubberHeaderController(RubberListView parent) {

        super(parent, R.layout.rubber_header_layout);

        mRefreshViewText = (TextView) mWidgetRootView.findViewById(R.id.pull_to_refresh_text);
        mArrowImageView = (ImageView) mWidgetRootView.findViewById(R.id.pull_to_refresh_image);
        mRefreshViewProgress = (ProgressBar) mWidgetRootView.findViewById(R.id.pull_to_refresh_progress);

        mNewDataImageView = (ImageView) mWidgetRootView.findViewById(R.id.pull_to_refresh_new_data_available);
        mNewDataImageView.setOnClickListener(mClickToRefreshListener);

        mArrowImageView.setMinimumHeight(50);
        mWidgetRootView.setOnClickListener(mClickToRefreshListener);

        mParentListView.addHeaderView(mWidgetRootView);

        measureView(mWidgetRootView);

        setWidgetState(WidgetState.TAP_TO_REFRESH);

        mParentListView.setRubberHeaderWidget(this);
    }

    @Override
    public void setNewDataAvailableImageResource(int resId) {
        mNewDataImageView.setImageResource(resId);
    }

    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {

        super.onScrollStateChanged(view, scrollState);

        if (mCurrentScrollState == AbsListView.OnScrollListener.SCROLL_STATE_FLING) {
            if (mParentListView.getFirstVisiblePosition() == 0) {
                switch (getWidgetState()) {
                    case TAP_TO_REFRESH:
                    case REFRESHING:
                        mParentListView.setSelection(0); // force top alignment
                        return;
                    default:
                        mParentListView.setSelection(1);
                }
                return;
            }
        }

        if (mCurrentScrollState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {
            if (mParentListView.getFirstVisiblePosition() == 1) {
                switch (getWidgetState()) {
                    case TAP_TO_REFRESH:
                    case REFRESHING:
                        mParentListView.setSelection(0);
                        break;
                    default:
                        return;
                }

                return;
            }

            if (mParentListView.getFirstVisiblePosition() == 0) {
                switch (getWidgetState()) {
                    case PULL_TO_REFRESH:
                        restoreViewPadding();
                        if (mNewDataImageView.getVisibility() == View.VISIBLE) {
                            setWidgetState(WidgetState.TAP_TO_REFRESH);
                            mParentListView.setSelection(0);
                        } else {
                            mParentListView.setSelection(1);
                        }
                        break;
                    default:
                        return;
                }

                return;
            }

        }
    }

    @Override
    protected boolean widgetIsVisibleOnScreen() {
        return super.widgetIsVisibleOnScreen() && (mParentListView.getFirstVisiblePosition() == 0);
    }

    @Override
    protected int getDragLimit() {
        int dragLimit = super.getDragLimit();

        if (mNewDataImageView.getVisibility() == View.VISIBLE) {
            dragLimit += mNewDataImageView.getHeight();
        }
        return dragLimit;
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {

        if (super.onTouch(v, event)) {
            return true;
        }

        if (widgetIsVisibleOnScreen() && (event.getAction() == MotionEvent.ACTION_UP) && (getWidgetState() == WidgetState.PULL_TO_REFRESH)) {
            if (mNewDataImageView.getVisibility() == View.VISIBLE) {
                setWidgetState(WidgetState.TAP_TO_REFRESH);
                mParentListView.setSelection(0);
            } else {
                mParentListView.setSelection(1);
            }
        }

        return false;
    }

    @Override
    public void setWidgetState(WidgetState newState) {
        if (mWidgetState != newState) {

            switch (newState) {
                case TAP_TO_REFRESH:
                    restoreViewPadding();

                    mRefreshViewProgress.setVisibility(View.GONE);
                    mArrowImageView.setVisibility(View.GONE);

                    // Set refresh view text to the pull label
                    mRefreshViewText.setText(R.string.pull_to_refresh_tap_label);
                    // Replace refresh drawable with arrow drawable
                    mArrowImageView.setImageResource(R.drawable.rubber_header_arrow);
                    // Clear the full rotation animation
                    mArrowImageView.clearAnimation();
                    // Hide progress bar and arrow.

                    break;

                case REFRESHING:
                    mNewDataImageView.setVisibility(View.GONE);
                    mArrowImageView.clearAnimation();
                    mArrowImageView.setVisibility(View.GONE);

                    restoreViewPadding();

                    mRefreshViewProgress.setVisibility(View.VISIBLE);

                    // Set refresh view text to the refreshing label
                    mRefreshViewText.setText(R.string.pull_to_refresh_refreshing_label);

                    break;

                case PULL_TO_REFRESH:
                    mRefreshViewProgress.setVisibility(View.GONE);
                    mArrowImageView.setVisibility(View.VISIBLE);

                    mRefreshViewText.setText(R.string.pull_to_refresh_pull_label);
                    mArrowImageView.clearAnimation();
                    if (getWidgetState() == WidgetState.RELEASE_TO_REFRESH) {
                        mArrowImageView.startAnimation(mReverseFlipAnimation);
                    }
                    break;

                case RELEASE_TO_REFRESH:
                    mRefreshViewProgress.setVisibility(View.GONE);
                    mArrowImageView.setVisibility(View.VISIBLE);

                    mRefreshViewText.setText(R.string.pull_to_refresh_release_label);
                    mArrowImageView.clearAnimation();
                    if (getWidgetState() == WidgetState.PULL_TO_REFRESH) {
                        mArrowImageView.startAnimation(mFlipAnimation);
                    }
                    break;

                case NEW_DATA_AVAILABLE:
                    setWidgetState(WidgetState.TAP_TO_REFRESH);
                    newState = WidgetState.TAP_TO_REFRESH;
                    mNewDataImageView.setVisibility(View.VISIBLE);

                    if (mParentListView.getFirstVisiblePosition() == 1) {
                        mParentListView.setSelection(0);
                    }
                default:
                    break;
            }

            mWidgetState = newState;
        }
    }

    @Override
    public void onRefreshComplete() {
        super.onRefreshComplete();

        if (mParentListView.getCount() > 3) {
            setWidgetState(WidgetState.PULL_TO_REFRESH);
        } else {
            setWidgetState(WidgetState.TAP_TO_REFRESH);
        }

        if (mParentListView.getFirstVisiblePosition() == 0) {
            mParentListView.setSelection(1);
        }
    }
}