vyatsu-schedule/app/src/main/java/agzam/vyatsu/data/remote/VyatsuHttpClient.kt

package agzam.vyatsu.data.remote

import android.util.Log
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.OkHttpClient
import okhttp3.Request
import java.io.InputStream
import java.util.concurrent.TimeUnit

/**
 * @author Agzam
 */
object VyatsuHttpClient {

    private const val TAG = "HTTP"

    private val client: OkHttpClient = OkHttpClient.Builder()
        .connectTimeout(15, TimeUnit.SECONDS)
        .readTimeout(30, TimeUnit.SECONDS)
        .build()

    suspend fun getText(url: String): String = withContext(Dispatchers.IO) {
        client.newCall(Request.Builder().url(url).build()).execute().use { resp ->
            if (!resp.isSuccessful) Log.e(TAG, "GET $url -> HTTP ${resp.code}")
            check(resp.isSuccessful) { "HTTP ${resp.code} for $url" }
            resp.body!!.string()
        }
    }

    suspend fun getBytes(url: String): ByteArray = withContext(Dispatchers.IO) {
        client.newCall(Request.Builder().url(url).build()).execute().use { resp ->
            if (!resp.isSuccessful) Log.e(TAG, "GET $url -> HTTP ${resp.code}")
            check(resp.isSuccessful) { "HTTP ${resp.code} for $url" }
            resp.body!!.bytes()
        }
    }

    /**
     * Открывает потоковое тело ответа. Вызывающий обязан закрыть
     * возвращённый [InputStream], чтобы вернуть соединение в пул.
     */
    suspend fun openStream(url: String): InputStream = withContext(Dispatchers.IO) {
        val resp = client.newCall(Request.Builder().url(url).build()).execute()
        if (!resp.isSuccessful) Log.e(TAG, "GET $url -> HTTP ${resp.code}")
        check(resp.isSuccessful) { "HTTP ${resp.code} for $url" }
        resp.body!!.byteStream()
    }

}