src/Tweeper.php: check http response code and return error for error codes
[tweeper.git] / src / rss_converter_instagram.com.xsl
1 <!--
2   Stylesheet to convert Instagram user timelines to RSS.
3
4   Copyright (C) 2015-2018  Antonio Ospite <ao2@ao2.it>
5
6   This file is part of tweeper.
7
8   This program is free software: you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation, either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.
20 -->
21 <xsl:stylesheet version="1.0"
22     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
23     xmlns:php="http://php.net/xsl"
24     exclude-result-prefixes="php">
25
26     <xsl:param name="generate-enclosure"/>
27     <xsl:param name="show-usernames"/>
28     <xsl:param name="show-multimedia"/>
29
30     <xsl:output method="xml" indent="yes"/>
31
32     <xsl:variable name="BaseURL">
33         <xsl:text>https://instagram.com</xsl:text>
34     </xsl:variable>
35
36     <xsl:variable name="user-name" select="//ProfilePage/graphql/user/username"/>
37
38     <!--
39          NOTE: some users do not specify the full name.
40
41          Remember to handle this case when using it and fall-back to the plain
42          user name when appropriate.
43     -->
44     <xsl:variable name="full-name" select="//ProfilePage/graphql/user/full_name"/>
45
46     <xsl:variable name="location-name" select="//LocationsPage/graphql/location/name"/>
47
48     <xsl:variable name="hashtag-name" select="//TagPage/graphql/hashtag/name"/>
49
50     <xsl:variable name="screen-name">
51         <xsl:choose>
52             <xsl:when test="$location-name != ''">
53                 <xsl:value-of select="$location-name"/>
54             </xsl:when>
55             <xsl:when test="$hashtag-name != ''">
56                 <xsl:value-of select="$hashtag-name"/>
57             </xsl:when>
58             <xsl:when test="$full-name != ''">
59                 <xsl:value-of select="$full-name"/>
60             </xsl:when>
61             <xsl:otherwise>
62                 <xsl:value-of select="$user-name"/>
63             </xsl:otherwise>
64         </xsl:choose>
65     </xsl:variable>
66
67     <xsl:template match="//edges/node">
68         <xsl:variable name="item-content-image" select="./display_url"/>
69         <xsl:variable name="item-content-caption" select="./edge_media_to_caption/edges/node/text"/>
70         <xsl:variable name="item-permalink" select="concat($BaseURL, '/p/', ./shortcode, '/')"/>
71         <item>
72             <title>
73                 <xsl:variable name="title-length" select="140"/>
74                 <xsl:variable name="item-content-title">
75                     <xsl:if test="$show-usernames = 1">
76                         <xsl:value-of select="concat($screen-name, ': ')"/>
77                     </xsl:if>
78                     <xsl:value-of select="normalize-space($item-content-caption)"/>
79                 </xsl:variable>
80                 <!-- ellipsize, inspired from http://stackoverflow.com/questions/13622338 -->
81                 <xsl:choose>
82                     <xsl:when test="string-length($item-content-title) > $title-length">
83                         <xsl:variable name="truncated-length" select="$title-length - 3"/>
84                         <xsl:value-of select="substring($item-content-title, 1, $truncated-length)"/>
85                         <xsl:text>...</xsl:text>
86                     </xsl:when>
87                     <xsl:otherwise>
88                         <xsl:value-of select="$item-content-title"/>
89                     </xsl:otherwise>
90                 </xsl:choose>
91             </title>
92             <link>
93                 <xsl:value-of select="$item-permalink"/>
94             </link>
95             <guid>
96                 <xsl:value-of select="$item-permalink"/>
97             </guid>
98             <pubDate>
99                 <xsl:variable name="timestamp" select="./taken_at_timestamp"/>
100                 <xsl:value-of select="php:functionString('Tweeper\Tweeper::epochToRssDate', $timestamp)"/>
101             </pubDate>
102             <description>
103                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
104                 <p>
105                     <xsl:if test="./is_video/text() = 1">
106                         (Video)
107                     </xsl:if>
108                     <xsl:value-of select="$item-content-caption"/>
109                 </p><br />
110                 <xsl:if test="$show-multimedia = 1">
111                     <a href="{$item-permalink}"><img src="{$item-content-image}" style="max-width: 100%"/></a>
112                 </xsl:if>
113                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
114             </description>
115             <xsl:if test="$generate-enclosure = 1">
116                 <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', $item-content-image)"/>
117             </xsl:if>
118         </item>
119     </xsl:template>
120
121     <xsl:template match="/">
122
123         <xsl:variable name="channel-title" select="concat('Instagram / ', $screen-name)"/>
124         <xsl:variable name="channel-link">
125             <xsl:choose>
126                 <xsl:when test="$location-name != ''">
127                     <xsl:variable name="location-id" select="//LocationsPage/graphql/location/id"/>
128                     <xsl:value-of select="concat($BaseURL, '/explore/locations/', $location-id)"/>
129                 </xsl:when>
130                 <xsl:when test="$hashtag-name != ''">
131                     <xsl:value-of select="concat($BaseURL, '/explore/tags/', $hashtag-name)"/>
132                 </xsl:when>
133                 <xsl:otherwise>
134                     <xsl:value-of select="concat($BaseURL, '/', $user-name)"/>
135                 </xsl:otherwise>
136             </xsl:choose>
137         </xsl:variable>
138         <xsl:variable name="channel-image" select="//profile_pic_url"/>
139
140         <rss version="2.0">
141             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
142             <channel>
143                 <generator>Tweeper</generator>
144                 <title>
145                     <xsl:value-of select="$channel-title"/>
146                 </title>
147                 <link>
148                     <xsl:value-of select="$channel-link"/>
149                 </link>
150                 <description>
151                     <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
152                     <xsl:choose>
153                         <xsl:when test="$location-name != ''">
154                             <xsl:variable name="location-latitude" select="//LocationsPage/graphql/location/lat"/>
155                             <xsl:variable name="location-longitude" select="//LocationsPage/graphql/location/lng"/>
156                             <xsl:value-of select="concat($location-name, ' (', $location-latitude, ', ', $location-longitude, ')')"/>
157                         </xsl:when>
158                         <xsl:when test="$hashtag-name != ''">
159                             <xsl:value-of select="concat('#', $hashtag-name)"/>
160                         </xsl:when>
161                         <xsl:otherwise>
162                             <xsl:value-of select="normalize-space(concat($screen-name, '. ', //user/biography))"/>
163                             <xsl:variable name="external-url" select="//user/external_url"/>
164                             <xsl:if test="$external-url != ''">
165                                 <xsl:text> </xsl:text><a href="{$external-url}"><xsl:value-of select="$external-url"/></a>
166                             </xsl:if>
167                         </xsl:otherwise>
168                     </xsl:choose>
169                     <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
170                 </description>
171                 <xsl:if test="$channel-image != ''">
172                     <image>
173                         <title>
174                             <xsl:value-of select="$channel-title"/>
175                         </title>
176                         <link>
177                             <xsl:value-of select="$channel-link"/>
178                         </link>
179                         <url>
180                             <xsl:value-of select="$channel-image"/>
181                         </url>
182                     </image>
183                 </xsl:if>
184                 <xsl:apply-templates select="//ProfilePage/graphql/user/edge_owner_to_timeline_media/edges/node|//LocationsPage/graphql/location/edge_location_to_media/edges/node|//TagPage/graphql/hashtag/edge_hashtag_to_media/edges/node"/>
185             </channel>
186         </rss>
187     </xsl:template>
188 </xsl:stylesheet>