Add adapter for Fever feeds api call

api/src/main/java/com/readrops/api/services/fever/adapters/FeverFeedsAdapter.kt

@@ -0,0 +1,67 @@
+package com.readrops.api.services.fever.adapters
+
+import android.annotation.SuppressLint
+import com.readrops.api.utils.exceptions.ParseException
+import com.readrops.api.utils.extensions.nextNonEmptyString
+import com.readrops.api.utils.extensions.nextNullableString
+import com.readrops.api.utils.extensions.skipField
+import com.readrops.api.utils.extensions.skipToEnd
+import com.readrops.db.entities.Feed
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.JsonReader
+import com.squareup.moshi.ToJson
+
+class FeverFeedsAdapter {
+
+    @ToJson
+    fun toJson(feeds: List<Feed>) = ""
+
+    @SuppressLint("CheckResult")
+    @FromJson
+    fun fromJson(reader: JsonReader): List<Feed> = with(reader) {
+        return try {
+            val feeds = arrayListOf<Feed>()
+
+            beginObject()
+
+            // skip basic fields (api_version, auth, last_refreshed...)
+            repeat(3) {
+                skipField()
+            }
+
+            nextName() // beginning of feeds array
+            beginArray()
+
+            while (hasNext()) {
+                beginObject()
+
+                val feed = Feed()
+                while (hasNext()) {
+                    with(feed) {
+                        when(selectName(NAMES)) {
+                            0 -> remoteId = nextInt().toString()
+                            1 -> name = nextNonEmptyString()
+                            2 -> url = nextNonEmptyString()
+                            3 -> siteUrl = nextNullableString()
+                            else -> skipValue()
+                        }
+                    }
+                }
+
+                feeds += feed
+                endObject()
+            }
+
+            endArray()
+            skipToEnd()
+
+            feeds
+        } catch (e: Exception) {
+            throw ParseException(e.message)
+        }
+    }
+
+    companion object {
+        val NAMES: JsonReader.Options = JsonReader.Options.of("id", "title", "url", "site_url")
+    }
+}

api/src/test/java/com/readrops/api/services/fever/adapters/FeverFeedsAdapterTest.kt

@@ -0,0 +1,33 @@
+package com.readrops.api.services.fever.adapters
+
+import com.readrops.api.TestUtils
+import com.readrops.db.entities.Feed
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.Types
+import okio.Buffer
+import org.junit.Test
+import kotlin.test.assertEquals
+
+class FeverFeedsAdapterTest {
+
+    val adapter = Moshi.Builder()
+        .add(FeverFeedsAdapter())
+        .build()
+        .adapter<List<Feed>>(Types.newParameterizedType(List::class.java, Feed::class.java))!!
+
+    @Test
+    fun validFeedsTest() {
+        val stream = TestUtils.loadResource("services/fever/feeds.json")
+
+        val feeds = adapter.fromJson(Buffer().readFrom(stream))!!
+
+        assertEquals(feeds.size, 1)
+
+        with(feeds[0]) {
+            assertEquals(name, "xda-developers")
+            assertEquals(url, "https://www.xda-developers.com/feed/")
+            assertEquals(siteUrl, "https://www.xda-developers.com/")
+            assertEquals(remoteId, "32")
+        }
+    }
+}

api/src/test/resources/services/fever/feeds.json

@@ -0,0 +1,22 @@
+{
+  "api_version": 3,
+  "auth": 1,
+  "last_refreshed_on_time": 1640284745,
+  "feeds": [
+    {
+      "id": 32,
+      "favicon_id": 32,
+      "title": "xda-developers",
+      "url": "https:\/\/www.xda-developers.com\/feed\/",
+      "site_url": "https:\/\/www.xda-developers.com\/",
+      "is_spark": 0,
+      "last_updated_on_time": 1640364024
+    }
+  ],
+  "feeds_groups": [
+    {
+      "group_id": 3,
+      "feed_ids": "5,4"
+    }
+  ]
+}