129 lines
6.2 KiB
Kotlin
129 lines
6.2 KiB
Kotlin
/*
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* Copyright 2016 Hippo Seven
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.ehviewer.client
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import android.util.Log
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import com.hippo.ehviewer.EhApplication.Companion.baseOkHttpClient
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import com.hippo.ehviewer.EhApplication.Companion.noRedirectOkHttpClient
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import com.hippo.ehviewer.EhApplication.Companion.okHttpClient
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import kotlinx.coroutines.coroutineScope
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.suspendCancellableCoroutine
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import kotlinx.serialization.json.Json
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import kotlinx.serialization.json.JsonArrayBuilder
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import kotlinx.serialization.json.JsonObjectBuilder
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import kotlinx.serialization.json.buildJsonArray
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import kotlinx.serialization.json.buildJsonObject
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import kotlinx.serialization.json.okio.decodeFromBufferedSource
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import okhttp3.Call
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import okhttp3.FormBody
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import okhttp3.MediaType
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import okhttp3.MediaType.Companion.toMediaType
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import okhttp3.MultipartBody
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import okhttp3.Request
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import okhttp3.RequestBody.Companion.toRequestBody
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import okhttp3.Response
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import okhttp3.executeAsync
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import okio.BufferedSource
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import kotlin.contracts.InvocationKind
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import kotlin.contracts.contract
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import kotlin.coroutines.resume
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import kotlin.coroutines.resumeWithException
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inline fun ehRequest(url: String, referer: String? = null, origin: String? = null, builder: Request.Builder.() -> Unit = {}) = Request.Builder().url(url).apply {
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addHeader("User-Agent", CHROME_USER_AGENT)
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addHeader("Accept", CHROME_ACCEPT)
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addHeader("Accept-Language", CHROME_ACCEPT_LANGUAGE)
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referer?.let { addHeader("Referer", it) }
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origin?.let { addHeader("Origin", it) }
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}.apply(builder).build()
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inline fun Request.Builder.formBody(builder: FormBody.Builder.() -> Unit) = post(FormBody.Builder().apply(builder).build())
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inline fun Request.Builder.multipartBody(builder: MultipartBody.Builder.() -> Unit) = post(MultipartBody.Builder().apply(builder).build())
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val MEDIA_TYPE_JSON: MediaType = "application/json; charset=utf-8".toMediaType()
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inline fun JsonObjectBuilder.array(name: String, builder: JsonArrayBuilder.() -> Unit) = put(name, buildJsonArray(builder))
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inline fun Request.Builder.jsonBody(builder: JsonObjectBuilder.() -> Unit) = post(buildJsonObject(builder).toString().toRequestBody(MEDIA_TYPE_JSON))
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const val TAG_CALL = "CancellableCallReadingScope"
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// This scoped response reading scope suspend function aimed at cancelling the call immediately once coroutine is cancelled.
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// i.e., bind a call with a suspended coroutine, and launch another coroutine to execute reading
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// Once origin coroutine is cancelled, then call cancelled, socket is closed, the reading coroutine will encounter [IOException]
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// Since Okio is not suspendable/cancellable, also okhttp, [executeAsync] only make [Request -> Response] cancellable, reading a Response is still not cancellable
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// Considering interrupting is not safe and performant, See https://github.com/Kotlin/kotlinx.coroutines/issues/3551#issuecomment-1353245978, we have such [usingCancellable]
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// TODO: Remove logging after this function stable
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suspend inline fun <R> Call.usingCancellable(crossinline block: suspend Response.() -> R): R = executeAsync().use {
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val call = this
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Log.d(TAG_CALL, "Got response of call$call")
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coroutineScope {
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suspendCancellableCoroutine<R> { cont ->
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launch {
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val r = runCatching {
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Log.d(TAG_CALL, "Reading response of call$call")
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block(it)
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}
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if (!isCanceled() && cont.isActive) {
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r.exceptionOrNull()?.let {
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Log.e(TAG_CALL, "Reading response of call$call failed!")
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cont.resumeWithException(it)
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}
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r.getOrNull()?.let {
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Log.d(TAG_CALL, "Reading response of call$call succeed!")
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cont.resume(it)
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}
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} else if (isCanceled() && cont.isActive) {
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Log.e(TAG_CALL, "call$call cancelled but coroutine is Active!")
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} else if (!isCanceled() && !cont.isActive) {
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Log.e(TAG_CALL, "call$call not cancelled but coroutine is Dead!")
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} else {
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Log.d(TAG_CALL, "Reading response of call$call cancelled")
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}
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}
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cont.invokeOnCancellation {
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Log.d(TAG_CALL, "Cancelling call$call")
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cancel()
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}
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}
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}.apply {
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Log.d(TAG_CALL, "Reading response of call$call finished!")
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}
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}
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suspend inline fun <R> Request.execute(block: Response.() -> R): R {
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contract {
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callsInPlace(block, InvocationKind.EXACTLY_ONCE)
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}
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return okHttpClient.newCall(this).executeAsync().use(block)
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}
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suspend inline fun <R> Request.executeNonCache(crossinline block: suspend Response.() -> R) = baseOkHttpClient.newCall(this).usingCancellable(block)
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suspend inline fun <R> Request.executeNoRedirect(block: Response.() -> R) = noRedirectOkHttpClient.newCall(this).executeAsync().use(block)
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suspend inline fun <reified T> Request.executeAndParseAs() = execute { parseAs<T>() }
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inline fun <reified T> Response.parseAs(): T = body.source().parseAs()
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inline fun <reified T> BufferedSource.parseAs(): T = json.decodeFromBufferedSource(this)
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inline fun <reified T> String.parseAs(): T = json.decodeFromString(this)
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val json = Json { ignoreUnknownKeys = true }
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const val CHROME_USER_AGENT = "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Mobile Safari/537.36"
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const val CHROME_ACCEPT = "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9"
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const val CHROME_ACCEPT_LANGUAGE = "en-US,en;q=0.5"
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