Add adapter for parsing atom entries

api/src/androidTest/assets/localfeed/atom/atom_items.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xml:lang="en-US">
+    <id>tag:github.com,2008:/readrops/Readrops/commits/develop</id>
+    <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commits/develop"/>
+    <link type="application/atom+xml" rel="self" href="https://github.com/readrops/Readrops/commits/develop.atom"/>
+    <title>Recent Commits to Readrops:develop</title>
+    <updated>2020-09-06T21:09:59Z</updated>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac</id>
+        <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac"/>
+        <title>Add an option to open item url in custom tab</title>
+        <updated>2020-09-06T21:09:59Z</updated>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <summary>Summary</summary>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Add an option to open item url in custom tab&lt;/pre&gt;
+        </content>
+    </entry>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/e0945823eecf269e5beea646ac5d7e630e08afbf</id>
+        <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commit/e0945823eecf269e5beea646ac5d7e630e08afbf"/>
+        <title>
+            Use gradle parallel builds
+        </title>
+        <updated>2020-09-05T13:28:23Z</updated>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Use gradle parallel builds&lt;/pre&gt;
+        </content>
+    </entry>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/85fcf03e64d8b482e4d2af8c2bcd1509d946944f</id>
+        <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commit/85fcf03e64d8b482e4d2af8c2bcd1509d946944f"/>
+        <title>
+            Use clear text mode for the feed url text input in AddFeedActivity
+        </title>
+        <updated>2020-09-05T12:23:48Z</updated>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Use clear text mode for the feed url text input in AddFeedActivity&lt;/pre&gt;
+        </content>
+    </entry>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/d59e38ee9d11da186131b602425231eff0896956</id>
+        <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commit/d59e38ee9d11da186131b602425231eff0896956"/>
+        <title>
+            Use project level okhttp client with glide
+        </title>
+        <updated>2020-09-05T12:05:16Z</updated>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Use project level okhttp client with glide&lt;/pre&gt;
+        </content>
+    </entry>
+</feed>

api/src/androidTest/assets/localfeed/atom/atom_items_no_date.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xml:lang="en-US">
+    <id>tag:github.com,2008:/readrops/Readrops/commits/develop</id>
+    <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commits/develop"/>
+    <link type="application/atom+xml" rel="self" href="https://github.com/readrops/Readrops/commits/develop.atom"/>
+    <title>Recent Commits to Readrops:develop</title>
+    <updated>2020-09-06T21:09:59Z</updated>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac</id>
+        <title>Add an option to open item url in custom tab</title>
+        <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac"/>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <summary>Summary</summary>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Add an option to open item url in custom tab&lt;/pre&gt;
+        </content>
+    </entry>
+</feed>

api/src/androidTest/assets/localfeed/atom/atom_items_no_link.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xml:lang="en-US">
+    <id>tag:github.com,2008:/readrops/Readrops/commits/develop</id>
+    <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commits/develop"/>
+    <link type="application/atom+xml" rel="self" href="https://github.com/readrops/Readrops/commits/develop.atom"/>
+    <title>Recent Commits to Readrops:develop</title>
+    <updated>2020-09-06T21:09:59Z</updated>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac</id>
+        <title>Add an option to open item url in custom tab</title>
+        <updated>2020-09-06T21:09:59Z</updated>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <summary>Summary</summary>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Add an option to open item url in custom tab&lt;/pre&gt;
+        </content>
+    </entry>
+</feed>

api/src/androidTest/assets/localfeed/atom/atom_items_no_title.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xml:lang="en-US">
+    <id>tag:github.com,2008:/readrops/Readrops/commits/develop</id>
+    <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commits/develop"/>
+    <link type="application/atom+xml" rel="self" href="https://github.com/readrops/Readrops/commits/develop.atom"/>
+    <title>Recent Commits to Readrops:develop</title>
+    <updated>2020-09-06T21:09:59Z</updated>
+    <entry>
+        <id>tag:github.com,2008:Grit::Commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac</id>
+        <link type="text/html" rel="alternate" href="https://github.com/readrops/Readrops/commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac"/>
+        <updated>2020-09-06T21:09:59Z</updated>
+        <media:thumbnail height="30" width="30" url="https://avatars2.githubusercontent.com/u/18555673?s=30&amp;u=c56b216e8d128d0ec217062feeace9faca4dc893&amp;v=4"/>
+        <author>
+            <name>Shinokuni</name>
+            <uri>https://github.com/Shinokuni</uri>
+        </author>
+        <summary>Summary</summary>
+        <content type="html">
+            &lt;pre style=&#39;white-space:pre-wrap;width:81ex&#39;&gt;Add an option to open item url in custom tab&lt;/pre&gt;
+        </content>
+    </entry>
+</feed>

api/src/androidTest/java/com/readrops/api/localfeed/atom/ATOMItemsAdapterTest.kt

@@ -0,0 +1,58 @@
+package com.readrops.api.localfeed.atom
+
+import android.content.Context
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import com.readrops.api.utils.DateUtils
+import com.readrops.api.utils.ParseException
+import junit.framework.TestCase.assertEquals
+import junit.framework.TestCase.assertNotNull
+import org.junit.Assert
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class ATOMItemsAdapterTest {
+
+    private val context: Context = InstrumentationRegistry.getInstrumentation().context
+
+    private val adapter = ATOMItemsAdapter()
+
+    @Test
+    fun normalCasesTest() {
+        val stream = context.resources.assets.open("localfeed/atom/atom_items.xml")
+
+        val items = adapter.fromXml(stream)
+        val item = items[0]
+
+        assertEquals(items.size, 4)
+        assertEquals(item.title, "Add an option to open item url in custom tab")
+        assertEquals(item.link, "https://github.com/readrops/Readrops/commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac")
+        assertEquals(item.pubDate, DateUtils.stringToLocalDateTime("2020-09-06T21:09:59Z"))
+        assertEquals(item.author, "Shinokuni")
+        assertEquals(item.description, "Summary")
+        assertEquals(item.guid, "tag:github.com,2008:Grit::Commit/c15f093a1bc4211e85f8d1817c9073e307afe5ac")
+        assertNotNull(item.content)
+    }
+
+    @Test
+    fun noTitleTest() {
+        val stream = context.resources.assets.open("localfeed/atom/atom_items_no_title.xml")
+
+        Assert.assertThrows("Item title is required", ParseException::class.java) { adapter.fromXml(stream) }
+    }
+
+    @Test
+    fun noLinkTest() {
+        val stream = context.resources.assets.open("localfeed/atom/atom_items_no_link.xml")
+
+        Assert.assertThrows("Item link is required", ParseException::class.java) { adapter.fromXml(stream) }
+    }
+
+    @Test
+    fun noDateTest() {
+        val stream = context.resources.assets.open("localfeed/atom/atom_items_no_date.xml")
+
+        Assert.assertThrows("Item date is required", ParseException::class.java) { adapter.fromXml(stream) }
+    }
+}

api/src/main/java/com/readrops/api/localfeed/XmlAdapter.kt

@@ -1,6 +1,7 @@
 package com.readrops.api.localfeed
 
 import com.readrops.api.localfeed.atom.ATOMFeedAdapter
+import com.readrops.api.localfeed.atom.ATOMItemsAdapter
 import com.readrops.api.localfeed.rss.RSSFeedAdapter
 import com.readrops.api.localfeed.rss.RSSItemsAdapter
 import com.readrops.db.entities.Feed
@@ -23,6 +24,7 @@ interface XmlAdapter<T> {
         fun xmlItemsAdapterFactory(type: LocalRSSHelper.RSSType): XmlAdapter<List<Item>> {
             return when (type) {
                 LocalRSSHelper.RSSType.RSS_2 -> RSSItemsAdapter()
+                LocalRSSHelper.RSSType.ATOM -> ATOMItemsAdapter()
                 else -> throw Exception("Unknown RSS type : $type")
             }
         }

api/src/main/java/com/readrops/api/localfeed/atom/ATOMItemsAdapter.kt

@@ -0,0 +1,62 @@
+package com.readrops.api.localfeed.atom
+
+import com.gitlab.mvysny.konsumexml.Names
+import com.gitlab.mvysny.konsumexml.allChildrenAutoIgnore
+import com.gitlab.mvysny.konsumexml.konsumeXml
+import com.readrops.api.localfeed.XmlAdapter
+import com.readrops.api.utils.DateUtils
+import com.readrops.api.utils.ParseException
+import com.readrops.api.utils.nonNullText
+import com.readrops.api.utils.nullableText
+import com.readrops.db.entities.Item
+import java.io.InputStream
+
+class ATOMItemsAdapter : XmlAdapter<List<Item>> {
+
+    override fun fromXml(inputStream: InputStream): List<Item> {
+        val konsume = inputStream.konsumeXml()
+        val items = arrayListOf<Item>()
+
+        return try {
+            konsume.child("feed") {
+                allChildrenAutoIgnore("entry") {
+                    val item = Item().apply {
+                        allChildrenAutoIgnore(names) {
+                            when (tagName) {
+                                "title" -> title = nonNullText()
+                                "id" -> guid = nullableText()
+                                "updated" -> pubDate = DateUtils.stringToLocalDateTime(nonNullText())
+                                "link" -> if (attributes["rel"] == "alternate") link = attributes["href"]
+                                "author" -> allChildrenAutoIgnore("name") { author = text() }
+                                "summary" -> description = nullableText()
+                                "content" -> content = nullableText()
+                            }
+                        }
+                    }
+
+                    validateItem(item)
+                    if (item.guid == null) item.guid = item.link
+
+                    items += item
+                }
+            }
+
+            konsume.close()
+            items
+        } catch (e: Exception) {
+            throw ParseException(e.message)
+        }
+    }
+
+    private fun validateItem(item: Item) {
+        when {
+            item.title == null -> throw ParseException("Item title is required")
+            item.link == null -> throw ParseException("Item link is required")
+            item.pubDate == null -> throw ParseException("Item date id required")
+        }
+    }
+
+    companion object {
+        val names = Names.of("title", "id", "updated", "link", "author", "summary", "content")
+    }
+}