/*
 * Copyright (C) 2011 The Android Open Source Project
 * modified
 * SPDX-License-Identifier: Apache-2.0 AND GPL-3.0-only
 */

package helium314.keyboard.latin.suggestions;

import android.content.Context;
import android.util.AttributeSet;
import helium314.keyboard.latin.utils.Log;

import androidx.annotation.NonNull;

import helium314.keyboard.keyboard.Key;
import helium314.keyboard.keyboard.Keyboard;
import helium314.keyboard.keyboard.KeyboardActionListener;
import helium314.keyboard.keyboard.PopupKeysKeyboardView;
import helium314.keyboard.latin.R;
import helium314.keyboard.latin.SuggestedWords;
import helium314.keyboard.latin.SuggestedWords.SuggestedWordInfo;
import helium314.keyboard.latin.suggestions.MoreSuggestions.MoreSuggestionKey;

/**
 * A view that renders a virtual {@link MoreSuggestions}. It handles rendering of keys and detecting
 * key presses and touch movements.
 */
public final class PopupSuggestionsView extends PopupKeysKeyboardView {
    private static final String TAG = PopupSuggestionsView.class.getSimpleName();

    public static abstract class MoreSuggestionsListener extends KeyboardActionListener.Adapter {
        public abstract void onSuggestionSelected(final SuggestedWordInfo info);
    }

    private boolean mIsInModalMode;

    public PopupSuggestionsView(final Context context, final AttributeSet attrs) {
        this(context, attrs, R.attr.popupKeysKeyboardViewStyle);
    }

    public PopupSuggestionsView(final Context context, final AttributeSet attrs,
                                final int defStyle) {
        super(context, attrs, defStyle);
    }

    // TODO: Remove redundant override method.
    @Override
    public void setKeyboard(@NonNull final Keyboard keyboard) {
        super.setKeyboard(keyboard);
        mIsInModalMode = false;
        // With accessibility mode off, {@link #mAccessibilityDelegate} is set to null at the
        // above {@link PopupKeysKeyboardView#setKeyboard(Keyboard)} call.
        // With accessibility mode on, {@link #mAccessibilityDelegate} is set to a
        // {@link PopupKeysKeyboardAccessibilityDelegate} object at the above
        // {@link PopupKeysKeyboardView#setKeyboard(Keyboard)} call.
        if (mAccessibilityDelegate != null) {
            mAccessibilityDelegate.setOpenAnnounce(R.string.spoken_open_more_suggestions);
            mAccessibilityDelegate.setCloseAnnounce(R.string.spoken_close_more_suggestions);
        }
    }

    @Override
    protected int getDefaultCoordX() {
        final MoreSuggestions pane = (MoreSuggestions) getKeyboard();
        return pane.mOccupiedWidth / 2;
    }

    public void updateKeyboardGeometry(final int keyHeight) {
        updateKeyDrawParams(keyHeight);
    }

    public void setModalMode() {
        mIsInModalMode = true;
        // Set vertical correction to zero (Reset popup keys keyboard sliding allowance
        // {@link R#dimen.config_popup_keys_keyboard_slide_allowance}).
        mKeyDetector.setKeyboard(getKeyboard(), -getPaddingLeft(), -getPaddingTop());
    }

    public boolean isInModalMode() {
        return mIsInModalMode;
    }

    @Override
    protected void onKeyInput(final Key key, final int x, final int y) {
        if (!(key instanceof MoreSuggestionKey)) {
            Log.e(TAG, "Expected key is MoreSuggestionKey, but found "
                    + key.getClass().getName());
            return;
        }
        final Keyboard keyboard = getKeyboard();
        if (!(keyboard instanceof MoreSuggestions)) {
            Log.e(TAG, "Expected keyboard is MoreSuggestions, but found "
                    + keyboard.getClass().getName());
            return;
        }
        final SuggestedWords suggestedWords = ((MoreSuggestions)keyboard).mSuggestedWords;
        final int index = ((MoreSuggestionKey)key).mSuggestedWordIndex;
        if (index < 0 || index >= suggestedWords.size()) {
            Log.e(TAG, "Selected suggestion has an illegal index: " + index);
            return;
        }
        if (!(mListener instanceof MoreSuggestionsListener)) {
            Log.e(TAG, "Expected mListener is MoreSuggestionsListener, but found "
                    + mListener.getClass().getName());
            return;
        }
        ((MoreSuggestionsListener)mListener).onSuggestionSelected(suggestedWords.getInfo(index));
    }
}
