Send manga/chapter/page details when sharing a chapter page

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -580,9 +580,13 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
      * Called from the presenter when a page is ready to be shared. It shows Android's default
      * sharing tool.
      */
-    fun onShareImageResult(file: File) {
+    fun onShareImageResult(file: File, page: ReaderPage) {
+        val manga = presenter.manga ?: return
+        val chapter = page.chapter.chapter
+
         val stream = file.getUriCompat(this)
         val intent = Intent(Intent.ACTION_SEND).apply {
+            putExtra(Intent.EXTRA_TEXT, getString(R.string.share_page_info, manga.title, chapter.name, page.number))
             putExtra(Intent.EXTRA_STREAM, stream)
             flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
             type = "image/*"

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt

@@ -569,7 +569,7 @@ class ReaderPresenter(
             .subscribeOn(Schedulers.io())
             .observeOn(AndroidSchedulers.mainThread())
             .subscribeFirst(
-                { view, file -> view.onShareImageResult(file) },
+                { view, file -> view.onShareImageResult(file, page) },
                 { _, _ -> /* Empty */ }
             )
     }

app/src/main/res/values/strings.xml

@@ -574,6 +574,7 @@
     <string name="custom_filter">Custom filter</string>
     <string name="set_as_cover">Set as cover</string>
     <string name="cover_updated">Cover updated</string>
+    <string name="share_page_info">%1$s: %2$s, page %3$d</string>
     <string name="page_downloaded">Page copied to %1$s</string>
     <string name="downloading">Downloading…</string>
     <string name="download_progress">Downloaded %1$d%%</string>