-
Notifications
You must be signed in to change notification settings - Fork 42
/
PinterestSkraper.kt
172 lines (156 loc) · 6.88 KB
/
PinterestSkraper.kt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
/*
* 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.pinterest
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.jsoup.getFirstElementByAttribute
import ru.sokomishalov.skraper.internal.jsoup.getFirstElementByTag
import ru.sokomishalov.skraper.internal.jsoup.getMetaPropertyMap
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
import java.time.format.DateTimeFormatter
import java.util.Locale.ROOT
/**
* @author sokomishalov
*/
open class PinterestSkraper @JvmOverloads constructor(
override val client: SkraperClient = Skrapers.client
) : Skraper {
override fun getPosts(path: String): Flow<Post> = flow {
val page = fetchPage(path = path)
val infoJsonNode = page.extractUserJson()
if (infoJsonNode != null) {
val rawPosts = infoJsonNode.extractFeed()
emitBatch(rawPosts) {
Post(
id = getString("id").orEmpty(),
text = getString("description"),
publishedAt = getString("created_at")?.let { DATE_FORMATTER.parse(it, Instant::from) },
statistics = PostStatistics(
likes = getInt("aggregated_pin_data.aggregated_stats.saves"),
reposts = getInt("repin_count"),
comments = getInt("comment_count"),
),
media = when (val imageInfo = getByPath("images.orig")) {
null -> getByPath("pin_thumbnail_urls")
?.mapNotNull { it.asText() }
?.map { Image(url = it) }
.orEmpty()
else -> listOf(Image(
url = imageInfo.getString("url").orEmpty(),
aspectRatio = imageInfo.run { getDouble("width") / getDouble("height") }
))
}
)
}
} else {
val rawPosts = page?.getElementsByAttributeValue("data-test-id", "pin").orEmpty()
emitBatch(rawPosts) {
Post(
id = attr("data-test-pin-id").orEmpty(),
text = getFirstElementByAttribute("data-test-id")?.getFirstElementByTag("span")?.ownText(),
media = listOf(
Image(
url = getFirstElementByTag("img")?.attr("src").orEmpty()
)
)
)
}
}
}
override suspend fun getPageInfo(path: String): PageInfo? {
val page = fetchPage(path = path)
val infoJsonNode = page.extractUserJson()
val info = infoJsonNode.extractInfo()
return when {
info != null -> {
with(info) {
PageInfo(
nick = getFirstByPath("profile.username", "owner.username")?.asText().orEmpty(),
name = getFirstByPath("profile.full_name", "owner.full_name")?.asText(),
description = getFirstByPath("profile.about", "description")?.asText(),
statistics = PageStatistics(
posts = getFirstByPath("profile.pin_count", "pin_count")?.asInt(),
followers = getFirstByPath("profile.follower_count", "follower_count")?.asInt(),
following = getFirstByPath("profile.following_count")?.asInt(),
),
avatar = getFirstByPath("owner.image_xlarge_url", "owner.image_medium_url", "owner.image_small_url", "user.image_xlarge_url")?.asText()?.toImage()
)
}
}
else -> {
val meta = page.getMetaPropertyMap().ifEmpty { return null }
PageInfo(
nick = meta["og:title"]?.substringAfter("(")?.substringBefore(")"),
name = meta["og:title"]?.substringBefore("(")?.substringBeforeLast(" "),
description = meta["og:description"]?.substringAfter("| "),
statistics = PageStatistics(
posts = meta["pinterestapp:pins"]?.toIntOrNull(),
followers = meta["pinterestapp:followers"]?.toIntOrNull(),
following = meta["pinterestapp:following"]?.toIntOrNull(),
),
avatar = meta["og:image"]?.toImage()
)
}
}
}
override fun supports(url: String): Boolean {
return "pinterest" in url.host
}
override suspend fun resolve(media: Media): Media {
return when (media) {
is Image -> client.fetchOpenGraphMedia(media)
else -> media
}
}
private suspend fun fetchPage(path: String): Document? {
return client.fetchDocument(HttpRequest(url = BASE_URL.buildFullURL(path = path)))
}
private fun Document?.extractUserJson(): JsonNode? {
val infoJson = this?.getElementById("initial-state")?.html()
return infoJson.readJsonNodes()
}
private fun JsonNode?.extractFeed(): List<JsonNode> {
return this
?.getByPath("resources.BoardFeedResource")
?.firstOrNull()
?.get("data")
?.toList()
.orEmpty()
}
private fun JsonNode?.extractInfo(): JsonNode? {
return this
?.getByPath("resources.BoardResource")
?.firstOrNull()
?.get("data")
}
companion object {
const val BASE_URL: String = "https://pinterest.com"
private val DATE_FORMATTER = DateTimeFormatter.ofPattern("EEE, d MMM yyyy HH:mm:ss Z", ROOT)
}
}