package com.suno.android.ui.screens.hooks.home.component

import androidx.annotation.OptIn
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.alpha
import androidx.compose.ui.graphics.Brush
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.SpanStyle
import androidx.compose.ui.text.buildAnnotatedString
import androidx.compose.ui.text.font.FontStyle
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
import androidx.media3.common.Player
import androidx.media3.common.util.UnstableApi
import androidx.media3.ui.compose.PlayerSurface
import androidx.media3.ui.compose.SURFACE_TYPE_TEXTURE_VIEW
import androidx.media3.ui.compose.modifiers.resizeWithContentScale
import androidx.media3.ui.compose.state.rememberPresentationState
import com.suno.android.common_res.R
import com.suno.android.common_ui.components.buttons.SunoMediumButton
import com.suno.android.common_ui.theme.ExtendedTheme

private const val GRADIENT_TOP_PERCENT = .073f
private const val GRADIENT_BOTTOM_PERCENT = .5582f
private const val GRADIENT_BLACK_COLOR = 0xFF191919

@OptIn(UnstableApi::class)
@Composable
fun HooksOnboardingContent(
    player: Player,
    onExploreClick: () -> Unit,
    modifier: Modifier = Modifier,
) {
    val playerPresentationState = rememberPresentationState(player)

    Box(modifier = modifier) {
        PlayerSurface(
            player = player,
            surfaceType = SURFACE_TYPE_TEXTURE_VIEW,
            modifier = Modifier
                .matchParentSize()
                .resizeWithContentScale(contentScale = ContentScale.Crop, playerPresentationState.videoSizeDp)
                .alpha(
                    if (playerPresentationState.coverSurface) 0f else 1f,
                ),
        )

        Column(
            horizontalAlignment = Alignment.CenterHorizontally,
            modifier = Modifier
                .align(Alignment.BottomCenter)
                .fillMaxWidth()
                .background(
                    brush = Brush.verticalGradient(
                        GRADIENT_TOP_PERCENT to Color.Transparent,
                        GRADIENT_BOTTOM_PERCENT to Color(GRADIENT_BLACK_COLOR),
                    ),
                )
                .padding(
                    top = 163.dp, // space for gradient to fade out
                    start = 16.dp,
                    end = 16.dp,
                    bottom = 50.dp,
                ),
        ) {
            Text(
                text = buildAnnotatedString {
                    append(stringResource(R.string.hooks_onboarding_title_prefix))
                    append(" ")
                    pushStyle(SpanStyle(fontStyle = FontStyle.Italic))
                    append(stringResource(R.string.hooks_onboarding_title_italicized))
                },
                style = ExtendedTheme.typography.mediumHeadline,
                textAlign = TextAlign.Center,
                color = ExtendedTheme.colors.textPrimary,
            )
            Spacer(Modifier.height(16.dp))
            Text(
                text = stringResource(R.string.hooks_onboarding_body),
                style = ExtendedTheme.typography.largeSubtitle,
                textAlign = TextAlign.Center,
                color = ExtendedTheme.colors.textPrimary,
            )
            Spacer(Modifier.height(24.dp))
            SunoMediumButton(
                text = stringResource(R.string.hooks_onboarding_button),
                onClick = onExploreClick,
            )
        }
    }
}