Anchira: Add trending filter (#1522)

Anchira: Add trending filters

Signed-off-by: Rama Bondan Prakoso <ramanarubp@gmail.com>

src/en/anchira/build.gradle

@@ -1,7 +1,7 @@
 ext {
     extName = 'Anchira'
     extClass = '.Anchira'
-    extVersionCode = 8
+    extVersionCode = 9
     isNsfw = true
 }
 

src/en/anchira/src/eu/kanade/tachiyomi/extension/en/anchira/Anchira.kt

@@ -117,10 +117,26 @@ class Anchira : HttpSource(), ConfigurableSource {
         }
     }
     override fun searchMangaRequest(page: Int, query: String, filters: FilterList): Request {
+        val filterList = if (filters.isEmpty()) getFilterList() else filters
+        val trendingFilter = filterList.findInstance<TrendingFilter>()
+        val sortTrendingFilter = filters.findInstance<SortTrendingFilter>()
         var url = libraryUrl.toHttpUrl().newBuilder()
 
         url.addQueryParameter("page", page.toString())
 
+        if (trendingFilter?.state == true) {
+            val interval = when (sortTrendingFilter?.state) {
+                1 -> "3"
+                else -> ""
+            }
+
+            if (interval.isNotBlank()) url.addQueryParameter("interval", interval)
+
+            url = url.toString().replace("library", "trending").toHttpUrl()
+                .newBuilder()
+
+            return GET(url.build(), headers)
+        } else {
             if (query.isNotBlank()) {
                 url.addQueryParameter("s", query)
             }
@@ -171,6 +187,7 @@ class Anchira : HttpSource(), ConfigurableSource {
 
             return GET(url.build(), headers)
         }
+    }
 
     override fun searchMangaParse(response: Response) = latestUpdatesParse(response)
 
@@ -298,6 +315,10 @@ class Anchira : HttpSource(), ConfigurableSource {
         CategoryGroup(),
         SortFilter(),
         FavoritesFilter(),
+        Filter.Separator(),
+        Filter.Header("Others are ignored if trending only"),
+        TrendingFilter(),
+        SortTrendingFilter(),
     )
 
     private class CategoryFilter(name: String) : Filter.CheckBox(name, false)
@@ -317,6 +338,18 @@ class Anchira : HttpSource(), ConfigurableSource {
         Selection(2, false),
     )
 
+    private class TrendingFilter : Filter.CheckBox(
+        "Show only trending",
+    )
+
+    private class SortTrendingFilter : PartFilter(
+        "Sort By",
+        arrayOf("Trending: Weekly", "Trending: Monthly"),
+    )
+
+    private open class PartFilter(displayName: String, value: Array<String>) :
+        Filter.Select<String>(displayName, value)
+
     private val SharedPreferences.imageQuality
         get() = getString(IMAGE_QUALITY_PREF, "b")!!
 
@@ -362,6 +395,8 @@ class Anchira : HttpSource(), ConfigurableSource {
             .use { json.decodeFromStream<List<EntryKey>>(it.body.byteStream()) }
     }
 
+    private inline fun <reified T> Iterable<*>.findInstance() = find { it is T } as? T
+
     companion object {
         const val SLUG_SEARCH_PREFIX = "id:"
         private const val IMAGE_QUALITY_PREF = "image_quality"