/*
 * Copyright 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.compose.samples.crane.util

import coil.annotation.ExperimentalCoilApi
import coil.intercept.Interceptor
import coil.request.ImageResult
import coil.size.Size
import okhttp3.HttpUrl
import okhttp3.HttpUrl.Companion.toHttpUrl

/**
 * A Coil [Interceptor] which appends query params to Unsplash urls to request sized images.
 */
@OptIn(ExperimentalCoilApi::class)
object UnsplashSizingInterceptor : Interceptor {
    override suspend fun intercept(chain: Interceptor.Chain): ImageResult {
        val data = chain.request.data
        val size = chain.size
        if (data is String &&
            data.startsWith("https://images.unsplash.com/photo-")
        ) {
            val url = data.toHttpUrl()
                .newBuilder()
                .addQueryParameter("w", size.width.toString())
                .addQueryParameter("h", size.height.toString())
                .build()
            val request = chain.request.newBuilder().data(url).build()
            return chain.proceed(request)
        }
        return chain.proceed(chain.request)
    }
}
