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IFunnySkraper.kt
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IFunnySkraper.kt
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/*
* Copyright (c) 2019-present Mikhael Sokolov
*
* 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
*
* http://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 ru.sokomishalov.skraper.provider.ifunny
import com.fasterxml.jackson.databind.JsonNode
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.flow
import org.jsoup.nodes.Document
import ru.sokomishalov.skraper.Skraper
import ru.sokomishalov.skraper.Skrapers
import ru.sokomishalov.skraper.client.HttpRequest
import ru.sokomishalov.skraper.client.SkraperClient
import ru.sokomishalov.skraper.client.fetchDocument
import ru.sokomishalov.skraper.client.fetchOpenGraphMedia
import ru.sokomishalov.skraper.internal.iterable.emitBatch
import ru.sokomishalov.skraper.internal.net.host
import ru.sokomishalov.skraper.internal.number.div
import ru.sokomishalov.skraper.internal.serialization.*
import ru.sokomishalov.skraper.model.*
import java.time.Instant
/**
* @author sokomishalov
*/
open class IFunnySkraper @JvmOverloads constructor(
override val client: SkraperClient = Skrapers.client
) : Skraper {
override fun getPosts(path: String): Flow<Post> = flow {
var nextPath = when {
path.startsWith("/user") -> path
else -> path.removeSuffix("/") + "/page"
}
while (true) {
val page = getPage(path = nextPath)
val rawPosts = page?.extractPageJson()?.getByPath("feed.items")?.toList()
if (rawPosts.isNullOrEmpty()) break
emitBatch(rawPosts) {
val url = getString("url").orEmpty()
val aspectRatio = getDouble("size.w") / getDouble("size.h")
Post(
id = getString("id").orEmpty(),
text = getString("title"),
publishedAt = getLong("published")?.let { Instant.ofEpochSecond(it) },
statistics = PostStatistics(
likes = getInt("smiles"),
comments = getInt("comments"),
),
media = listOf(
when (getString("type")) {
"picture" -> Image(
url = url,
aspectRatio = aspectRatio
)
else -> Video(
url = url,
aspectRatio = aspectRatio
)
}
)
)
}
val nextPageNumber = nextPath.substringAfterLast("/page").toIntOrNull()?.plus(1) ?: break
nextPath = nextPath.substringBeforeLast("/page") + "/page${nextPageNumber}"
}
}
override fun supports(url: String): Boolean {
return "ifunny.co" in url.host
}
override suspend fun resolve(media: Media): Media {
return client.fetchOpenGraphMedia(media)
}
override suspend fun getPageInfo(path: String): PageInfo? {
val page = getPage(path = path)
val json = page.extractPageJson()?.getByPath("user.data")
return json?.run {
PageInfo(
nick = getString("nick"),
description = getString("about"),
statistics = PageStatistics(
followers = getInt("subscribers"),
following = getInt("subscriptions"),
),
avatar = getFirstByPath("avatar.l", "avatar.m", "avatar.s", "avatar.url")?.asText()?.toImage(),
cover = getString("coverUrl")?.
toImage()
)
}
}
private fun Document?.extractPageJson(): JsonNode? {
val textJson = this
?.getElementsByTag("script")
?.find { "__INITIAL_STATE__" in it.html() }
?.html()
?.removePrefix("window.__INITIAL_STATE__=")
?.removeSuffix(";")
return textJson?.run { readJsonNodes() }
}
private suspend fun getPage(path: String): Document? {
return client.fetchDocument(HttpRequest(url = BASE_URL.buildFullURL(path = path)))
}
companion object {
const val BASE_URL: String = "https://ifunny.co"
}
}