This message was deleted.

# multiplatform

[Slackbot]

This message was deleted.

[Seri]

Can you share the ktor function call as well?

[Seri]

Illegal input: Unexpected JSON token at offset 0: Expected start of the object '{', but had '[' instead at path: $

This means that you're failing to deserialize the server's response. In other words, your ProductListApiResponse doesn't match the API's actual return types

[Romão]

const val BASE_URL = "<https://api.escuelajs.co/api/v1/>"

val httpClient = HttpClient {
    install(ContentNegotiation) {
        json(
            Json {
                prettyPrint = true
                isLenient = true
                ignoreUnknownKeys = true
            }
        )
    }

    install(Logging) {
        logger = object : Logger {
            override fun log(message: String) {
                println(message)
            }
        }
        level = LogLevel.ALL
        sanitizeHeader { header ->
            header == HttpHeaders.Authorization
        }
    }
    defaultRequest {
        contentType(ContentType.Application.Json)
    }
}

[Seri]

If I had to guess, you're trying to deserialize into ProductListApiResponse . That would give the data format:

{ products: [ { id, title, ..... }, { id, title, ..... } ] }

But the API is returning just the inner element, a list of products

[ { id, title, ..... }, { id, title, ..... } ]

[Seri]

How are you calling httpClient? What does that return signature look like?

[Romão]

@Seri yes but don't understand why.

[Romão]

the api doesn't have a "key" products, returns [(),()]

[Romão]

class FeedRemoteDataSourceImpl(
    private val httpClient: HttpClient,
) : FeedRemoteDataSource {
    override suspend fun getProductsList(): List<ProductItem> {
        val httpResponse = httpClient.get("${BASE_URL}products?offset=0&limit=1")
        // log the response in the console
        println("httpResponse: $httpResponse")
        val productListApiResponse = httpResponse.body<ProductListApiResponse>()
        println("productListApiResponse: $productListApiResponse")
        //return emptyList()
        return productListApiResponse.products.mapNotNull { it.toProductItem() }
    }
}

[Seri]

val productListApiResponse = httpResponse.body<ProductListApiResponse>()

Change this to the following:

val productListApiResponse = httpResponse.body<List<ProductApiItem>>()

You can delete your ProductListApiResponse class, it's not needed

[Romão]

ok...i have to map a List of ApiItems to Items

val productListApiResponse = httpResponse.body<List<ProductListApiResponse>>()
println("productListApiResponse: $productListApiResponse")
//return emptyList()
return productListApiResponse

correct ? thanks

[Seri]

only httpResponse.body<List<ProductApiItem>>() is necessary

[Romão]

yes got it @Seri many thanks for the assistance 🙌👍

[Chrimaeon]

Why did you delete the post? Now all context is lost that others might be interested in 🤦🏼

[Chrimaeon]

For reference https://kotlinlang.slack.com/archives/C0A974TJ9/p1742576823606169