package com.example.gravitydemo

import ai.gravityfield.gravity_sdk.GravitySDK
import ai.gravityfield.gravity_sdk.models.*
import ai.gravityfield.gravity_sdk.network.Campaign
import ai.gravityfield.gravity_sdk.ui.product_view_builder.ProductViewBuilder
import androidx.compose.runtime.Composable
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.*
import androidx.compose.material3.Text
import androidx.compose.ui.Modifier
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.*
import androidx.compose.ui.unit.dp
import coil3.compose.AsyncImage

class MyComposeProductViewBuilder : ProductViewBuilder {
    @Composable
    override fun Build(slot: Slot, content: CampaignContent, campaign: Campaign) {
        val product = slot.toRecommendedProduct()

        Column(
            modifier = Modifier
                .width(164.dp)
                .clickable {
                    GravitySDK.instance.sendProductEngagement(
                        ProductClickEngagement(slot, content, campaign)
                    )
                    openProduct(product.url, product.sku)
                }
                .padding(8.dp)
        ) {
            AsyncImage(
                model = product.imageUrl,
                contentDescription = product.name,
                modifier = Modifier
                    .fillMaxWidth()
                    .height(140.dp),
                contentScale = ContentScale.Fit,
            )

            Text(
                text = product.name,
                maxLines = 2,
                overflow = TextOverflow.Ellipsis,
            )

            product.oldPrice?.let {
                Text(
                    text = it,
                    textDecoration = TextDecoration.LineThrough,
                )
            }

            product.price?.let {
                Text(text = it, fontWeight = FontWeight.SemiBold)
            }
        }
    }

    private fun openProduct(url: String?, sku: String) {
        // Откройте экран товара в приложении или deeplink по url/sku.
    }

    private fun Slot.toRecommendedProduct(): RecommendedProduct {
        return RecommendedProduct(
            sku = stringValue("sku", "id") ?: slotId ?: strId.toString(),
            name = stringValue("name") ?: "Товар",
            price = stringValue("price"),
            oldPrice = stringValue("old_price", "oldPrice"),
            imageUrl = stringValue("image_url", "imageUrl"),
            url = stringValue("url"),
        )
    }

    private fun Slot.stringValue(vararg keys: String): String? {
        return keys.firstNotNullOfOrNull { key ->
            item[key]?.toString()?.takeIf { it.isNotBlank() }
        }
    }
}

data class RecommendedProduct(
    val sku: String,
    val name: String,
    val price: String?,
    val oldPrice: String?,
    val imageUrl: String?,
    val url: String?,
)