sample-compose/src/main/java/com/airbnb/lottie/sample/compose/lottiefiles/LottieFilesPage.kt

package com.airbnb.lottie.sample.compose.lottiefiles

import android.graphics.drawable.shapes.RoundRectShape
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.annotation.StringRes
import androidx.compose.foundation.Box
import androidx.compose.foundation.ScrollableColumn
import androidx.compose.foundation.Text
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.IntrinsicSize
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.preferredHeight
import androidx.compose.foundation.layout.preferredWidth
import androidx.compose.foundation.layout.wrapContentWidth
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.Divider
import androidx.compose.material.MaterialTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.onPositioned
import androidx.compose.ui.platform.ConfigurationAmbient
import androidx.compose.ui.platform.DensityAmbient
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.fragment.app.Fragment
import com.airbnb.lottie.sample.compose.R
import com.airbnb.lottie.sample.compose.composables.LottieComposeScaffoldView
import com.airbnb.lottie.sample.compose.composables.Marquee

class LottieFilesFragment : Fragment() {
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return LottieComposeScaffoldView(requireContext()) {
            LottieFilesPage()
        }
    }
}

enum class LottieFilesTab(@StringRes val stringRes: Int) {
    Recent(R.string.tab_recent),
    Popular(R.string.tab_popular),
    Search(R.string.tab_search)
}

@Composable
fun LottieFilesPage() {
    val tab = remember { mutableStateOf(LottieFilesTab.Recent) }

    ScrollableColumn {
        Marquee("LottieFiles")
        LottieFilesTabBar(
            selectedTab = tab.value,
            onTabSelected = { tab.value = it },
        )
    }

}

@Composable
fun LottieFilesTabBar(
    selectedTab: LottieFilesTab,
    onTabSelected: (LottieFilesTab) -> Unit,
    modifier: Modifier = Modifier
) {
    Row(
        modifier = Modifier.fillMaxWidth().then(modifier),
        horizontalArrangement = Arrangement.Start
    ) {
        for (tab in LottieFilesTab.values()) {
            LottieFilesTabBarTab(
                text = stringResource(tab.stringRes),
                isSelected = tab == selectedTab,
                onClick = { onTabSelected(tab) }
            )
        }
    }
}

@Composable
fun LottieFilesTabBarTab(
    text: String,
    isSelected: Boolean,
    onClick: () -> Unit
) {
    val textWidth = remember { mutableStateOf(0) }
    val pxRatio = with(DensityAmbient.current) { 1.dp.toPx() }
    Column(
        modifier = Modifier
            .clickable(onClick = onClick)
            .padding(horizontal = 16.dp, vertical = 8.dp)
    ) {
        Text(
            text,
            maxLines = 1,
            modifier = Modifier
                .onPositioned { textWidth.value = it.size.width }
                .wrapContentWidth()
        )
        if (isSelected) {
            Box(
                modifier = Modifier
                    .preferredHeight(3.dp)
                    .background(MaterialTheme.colors.primary)
                    .preferredWidth((textWidth.value / pxRatio).dp)
            )
        }
    }
}