package com.aiosman.riderpro

import android.util.Log
import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ExperimentalLayoutApi
import androidx.compose.foundation.layout.FlowRow
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.aspectRatio
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.derivedStateOf
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Brush
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalConfiguration
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp

data class ArtWork(
    val id: Int,
    val resId: Int,
)

fun GenerateMockArtWorks(): List<ArtWork> {
    val pickupImage = listOf(
        R.drawable.default_avatar,
        R.drawable.default_moment_img,
        R.drawable.rider_pro_moment_demo_1,
        R.drawable.rider_pro_moment_demo_2,
        R.drawable.rider_pro_moment_demo_3,
    )
    return List(30) {
        ArtWork(
            id = it,
            resId = pickupImage.random()
        )
    }
}

@OptIn(ExperimentalLayoutApi::class)
@Preview
@Composable
fun OfficialPhotographer() {
    val lazyListState = rememberLazyListState()
    var artWorks by remember { mutableStateOf<List<ArtWork>>(emptyList()) }
    LaunchedEffect(Unit) {
        artWorks = GenerateMockArtWorks()
    }
    // Observe the scroll state and calculate opacity
    val alpha by remember {
        derivedStateOf {
            // Example calculation: Adjust the range and formula as needed
            val alp = minOf(1f, lazyListState.firstVisibleItemScrollOffset / 900f)
            Log.d("alpha", "alpha: $alp")
            alp
        }
    }
    Scaffold { paddingValues ->

        Box(
            modifier = Modifier
                .background(Color.Black)
                .padding(paddingValues)

        ) {
            LazyColumn(
                modifier = Modifier.fillMaxSize(),
                state = lazyListState
            ) {
                item {
                    Box(
                        modifier = Modifier
                            .height(400.dp)
                            .fillMaxWidth()
                    ) {
                        Image(
                            painter = painterResource(id = R.drawable.default_moment_img),
                            contentDescription = "Logo",
                            contentScale = ContentScale.Crop,
                            modifier = Modifier.fillMaxSize()
                        )
                        // top bar

                        // on bottom of box
                        Box(
                            modifier = Modifier
                                .fillMaxWidth()
                                .height(120.dp)
                                .background(
                                    brush = Brush.verticalGradient(
                                        colors = listOf(
                                            Color.Black.copy(alpha = 1f),
                                            Color.Black.copy(alpha = 1f),
                                            Color.Black.copy(alpha = 0f),
                                        ),
                                        startY = Float.POSITIVE_INFINITY,
                                        endY = 0f
                                    )
                                )
                                .padding(16.dp)
                                .align(alignment = androidx.compose.ui.Alignment.BottomCenter)

                        ) {
                            Column(
                                modifier = Modifier.fillMaxSize(),
                            ) {
                                Row(
                                    modifier = Modifier
                                        .fillMaxWidth()
                                        .weight(1f),
                                    verticalAlignment = Alignment.CenterVertically
                                ) {
                                    Image(
                                        painter = painterResource(id = R.drawable.default_avatar),
                                        contentDescription = "",
                                        modifier = Modifier
                                            .size(32.dp)
                                            .clip(CircleShape) // Clip the image to a circle
                                    )
                                    Spacer(modifier = Modifier.width(8.dp))
                                    // name
                                    Text("Onyama Limba", color = Color.White, fontSize = 14.sp)
                                    Spacer(modifier = Modifier.width(8.dp))
                                    // round box
                                    Box(
                                        modifier = Modifier
                                            .background(Color.Red, CircleShape)
                                            .padding(horizontal = 8.dp, vertical = 4.dp)
                                    ) {
                                        // certification
                                        Text("摄影师", color = Color.White, fontSize = 12.sp)
                                    }
                                    Spacer(modifier = Modifier.weight(1f))
                                    IconButton(
                                        onClick = { /*TODO*/ },
                                        modifier = Modifier.size(32.dp)
                                    ) {
                                        Icon(
                                            imageVector = Icons.Filled.Favorite,
                                            contentDescription = null,
                                            tint = Color.White
                                        )
                                    }
                                    Spacer(modifier = Modifier.width(4.dp))
                                    Text("123", color = Color.White)
                                    Spacer(modifier = Modifier.width(8.dp))
                                    IconButton(
                                        onClick = {},
                                        modifier = Modifier.size(32.dp)
                                    ) {
                                        Image(
                                            painter = painterResource(id = R.drawable.rider_pro_eye),
                                            contentDescription = "",
                                            modifier = Modifier
                                                .size(24.dp)
                                        )
                                    }
                                    Spacer(modifier = Modifier.width(4.dp))
                                    Text("123", color = Color.White)

                                }
                                Box(
                                    modifier = Modifier
                                        .fillMaxWidth()
                                        .weight(1f)
                                ) {
                                    // description
                                    Text(
                                        "摄影师 Diego Morata 的作品",
                                        color = Color.White,
                                        modifier = Modifier.align(Alignment.Center)
                                    )
                                }
                            }

                            // circle avatar

                        }

                    }
                    val screenWidth = LocalConfiguration.current.screenWidthDp.dp
                    val imageSize =
                        (screenWidth - (4.dp * 4)) / 3 // Subtracting total padding and divi
                    val itemWidth = screenWidth / 3 - 4.dp * 2
                    FlowRow(
                        modifier = Modifier.padding(4.dp),
                        horizontalArrangement = Arrangement.spacedBy(4.dp),
                        verticalArrangement = Arrangement.spacedBy(4.dp),
                        maxItemsInEachRow = 3
                    ) {
                        for (artWork in artWorks) {
                            Box(
                                modifier = Modifier
                                    .width(itemWidth)
                                    .aspectRatio(1f)
                                    .background(Color.Gray)
                            ) {
                                Image(
                                    painter = painterResource(id = artWork.resId),
                                    contentDescription = "",
                                    contentScale = ContentScale.Crop,
                                    modifier = Modifier
                                        .width(imageSize)
                                        .aspectRatio(1f)
                                )
                            }
                        }

                    }
                }
            }
            Box(
                modifier = Modifier
                    .fillMaxWidth()
                    .height(64.dp)
                    .background(Color.Black.copy(alpha = alpha))
                    .padding(horizontal = 16.dp)
            ) {
                Row(
                    modifier = Modifier.fillMaxSize(),
                    verticalAlignment = androidx.compose.ui.Alignment.CenterVertically,
                ) {
                    Image(
                        painter = painterResource(id = R.drawable.rider_pro_nav_back),
                        colorFilter = androidx.compose.ui.graphics.ColorFilter.tint(Color.White),
                        contentDescription = "",
                        modifier = Modifier
                            .size(32.dp)
                            .clip(CircleShape) // Clip the image to a circle
                    )
                    if (alpha == 1f) {
                        Spacer(modifier = Modifier.width(8.dp))
                        Image(
                            painter = painterResource(id = R.drawable.default_avatar),
                            contentDescription = "",
                            modifier = Modifier
                                .size(32.dp)
                                .clip(CircleShape) // Clip the image to a circle

                        )
                        Spacer(modifier = Modifier.width(8.dp))
                        Text("Onyama Limba", color = Color.White)
                    }
                }

            }
        }

    }
}