Add reading time

app/src/main/java/com/capyreader/app/ui/accounts/LoginModule.kt

@@ -1,6 +1,6 @@
 package com.capyreader.app.ui.accounts
 
-import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.core.module.dsl.viewModel
 import org.koin.dsl.module
 
 val loginModule = module {

app/src/main/java/com/capyreader/app/ui/articles/ArticlesModule.kt

@@ -3,7 +3,7 @@ package com.capyreader.app.ui.articles
 import com.capyreader.app.preferences.AppPreferences
 import com.capyreader.app.ui.articles.feeds.edit.EditFeedViewModel
 import com.jocmp.capy.articles.ArticleRenderer
-import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.core.module.dsl.viewModel
 import org.koin.dsl.module
 
 internal val articlesModule = module {

app/src/main/java/com/capyreader/app/ui/settings/SettingsModule.kt

@@ -6,7 +6,7 @@ import com.capyreader.app.ui.settings.panels.DisplaySettingsViewModel
 import com.capyreader.app.ui.settings.panels.GeneralSettingsViewModel
 import com.capyreader.app.ui.settings.panels.GesturesSettingsViewModel
 import com.capyreader.app.ui.settings.panels.SettingsViewModel
-import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.core.module.dsl.viewModel
 import org.koin.androidx.workmanager.dsl.worker
 import org.koin.dsl.module
 

capy/src/main/java/com/jocmp/capy/articles/ArticleRenderer.kt

@@ -42,6 +42,10 @@ class ArticleRenderer(
             article.feedName
         }
 
+        val characters = article.content.length;
+        val charactersPerMinute = if (isCJK(article.content)) 265 else 500
+        val readingTime = (characters + charactersPerMinute - 1) / charactersPerMinute; // Round up
+
         val substitutions = colors + mapOf(
             "external_link" to article.externalLink(),
             "title" to title,
@@ -52,6 +56,7 @@ class ArticleRenderer(
             "font_preload" to fontPreload(fontFamily),
             "top_margin" to topMargin(),
             "pre_white_space" to preWhiteSpace(),
+            "reading_time" to "$readingTime min read"
         )
 
         val html = MacroProcessor(
@@ -106,6 +111,36 @@ class ArticleRenderer(
                 """.trimIndent()
         }
     }
+
+    fun isCJK(text: String): Boolean {
+        var totalCJK = 0
+        var totalChecked = 0
+
+        for (r in text) {
+            if (totalChecked >= 50) break
+            totalChecked++
+
+            val block = Character.UnicodeBlock.of(r)
+            if (block == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS ||
+                block == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A ||
+                block == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B ||
+                block == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS ||
+                block == Character.UnicodeBlock.CJK_COMPATIBILITY_FORMS ||
+                block == Character.UnicodeBlock.HIRAGANA ||
+                block == Character.UnicodeBlock.KATAKANA ||
+                block == Character.UnicodeBlock.HANGUL_SYLLABLES ||
+                block == Character.UnicodeBlock.HANGUL_JAMO ||
+                block == Character.UnicodeBlock.HANGUL_COMPATIBILITY_JAMO ||
+                block == Character.UnicodeBlock.BOPOMOFO ||
+                block == Character.UnicodeBlock.YI_SYLLABLES ||
+                block == Character.UnicodeBlock.YI_RADICALS
+            ) {
+                totalCJK++
+            }
+        }
+
+        return totalChecked > 0 && totalCJK * 2 >= totalChecked
+    }
 }
 
 private val Document.content