/*
 * Copyright (c) 2023 New Vector Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.element.android.features.messages.impl.timeline.components.customreaction

import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.sizeIn
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.material.ripple.rememberRipple
import androidx.compose.material3.LocalTextStyle
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.semantics.clearAndSetSemantics
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.unit.TextUnit
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import io.element.android.compound.theme.ElementTheme
import io.element.android.emojibasebindings.Emoji
import io.element.android.libraries.designsystem.preview.ElementPreview
import io.element.android.libraries.designsystem.preview.PreviewsDayNight
import io.element.android.libraries.designsystem.text.toDp
import io.element.android.libraries.designsystem.theme.components.Text
import io.element.android.libraries.ui.strings.CommonStrings

@Composable
fun EmojiItem(
    item: Emoji,
    isSelected: Boolean,
    onSelectEmoji: (Emoji) -> Unit,
    modifier: Modifier = Modifier,
    emojiSize: TextUnit = 20.sp,
) {
    val backgroundColor = if (isSelected) {
        ElementTheme.colors.bgActionPrimaryRest
    } else {
        Color.Transparent
    }
    val description = if (isSelected) {
        stringResource(id = CommonStrings.a11y_remove_reaction_with, item.unicode)
    } else {
        stringResource(id = CommonStrings.a11y_react_with, item.unicode)
    }
    Box(
        modifier = modifier
            .sizeIn(minWidth = 40.dp, minHeight = 40.dp)
            .background(backgroundColor, CircleShape)
            .clickable(
                enabled = true,
                onClick = { onSelectEmoji(item) },
                indication = rememberRipple(bounded = false, radius = emojiSize.toDp() / 2 + 10.dp),
                interactionSource = remember { MutableInteractionSource() }
            )
            .clearAndSetSemantics {
                contentDescription = description
            },
        contentAlignment = Alignment.Center
    ) {
        Text(
            text = item.unicode,
            style = LocalTextStyle.current.copy(fontSize = emojiSize),
        )
    }
}

@PreviewsDayNight
@Composable
internal fun EmojiItemPreview() = ElementPreview {
    Row(
        horizontalArrangement = Arrangement.spacedBy(8.dp),
    ) {
        for (isSelected in listOf(true, false)) {
            EmojiItem(
                item = Emoji(
                    hexcode = "",
                    label = "",
                    tags = null,
                    shortcodes = emptyList(),
                    unicode = "👍",
                    skins = null
                ),
                isSelected = isSelected,
                onSelectEmoji = {},
            )
        }
    }
}
