convert some utils to kotlin

app/src/main/java/awais/instagrabber/utils/CubicInterpolation.kt

@@ -1,45 +1,38 @@
-package awais.instagrabber.utils;
+package awais.instagrabber.utils
 
-import java.util.Arrays;
+import java.util.*
 
-public class CubicInterpolation {
-
-    private final float[] array;
-    private final int tangentFactor;
-    private final int length;
-
-    public CubicInterpolation(final float[] array, final int cubicTension) {
-        this.array = Arrays.copyOf(array, array.length);
-        this.length = array.length;
-        tangentFactor = 1 - Math.max(0, Math.min(1, cubicTension));
-    }
-
-    public CubicInterpolation(final float[] array) {
-        this(array, 0);
+class CubicInterpolation @JvmOverloads constructor(array: FloatArray, cubicTension: Int = 0) {
+    private val array: FloatArray
+    private val tangentFactor: Int
+    private val length: Int
+    private fun getTangent(k: Int): Float {
+        return tangentFactor * (getClippedInput(k + 1) - getClippedInput(k - 1)) / 2
     }
 
-    private float getTangent(int k) {
-        return tangentFactor * (getClippedInput(k + 1) - getClippedInput(k - 1)) / 2;
+    fun interpolate(t: Float): Float {
+        val k = Math.floor(t.toDouble()).toInt()
+        val m = floatArrayOf(getTangent(k), getTangent(k + 1))
+        val p = floatArrayOf(getClippedInput(k), getClippedInput(k + 1))
+        val t1 = t - k
+        val t2 = t1 * t1
+        val t3 = t1 * t2
+        return (2 * t3 - 3 * t2 + 1) * p[0] + (t3 - 2 * t2 + t1) * m[0] + (-2 * t3 + 3 * t2) * p[1] + (t3 - t2) * m[1]
     }
 
-    public float interpolate(final float t) {
-        int k = (int) Math.floor(t);
-        float[] m = new float[]{getTangent(k), getTangent(k + 1)};
-        float[] p = new float[]{getClippedInput(k), getClippedInput(k + 1)};
-        final float t1 = t - k;
-        final float t2 = t1 * t1;
-        final float t3 = t1 * t2;
-        return (2 * t3 - 3 * t2 + 1) * p[0] + (t3 - 2 * t2 + t1) * m[0] + (-2 * t3 + 3 * t2) * p[1] + (t3 - t2) * m[1];
+    private fun getClippedInput(i: Int): Float {
+        return if (i >= 0 && i < length) {
+            array[i]
+        } else array[clipClamp(i, length)]
     }
 
-    private float getClippedInput(int i) {
-        if (i >= 0 && i < length) {
-            return array[i];
-        }
-        return array[clipClamp(i, length)];
+    private fun clipClamp(i: Int, n: Int): Int {
+        return Math.max(0, Math.min(i, n - 1))
     }
 
-    private int clipClamp(int i, int n) {
-        return Math.max(0, Math.min(i, n - 1));
+    init {
+        this.array = Arrays.copyOf(array, array.size)
+        length = array.size
+        tangentFactor = 1 - Math.max(0, Math.min(1, cubicTension))
     }
-}
+}

app/src/main/java/awais/instagrabber/utils/IntentUtils.kt

@@ -1,61 +1,46 @@
-package awais.instagrabber.utils;
+package awais.instagrabber.utils
 
-import android.net.Uri;
-import android.text.TextUtils;
+import android.net.Uri
+import android.text.TextUtils
+import awais.instagrabber.models.IntentModel
+import awais.instagrabber.models.enums.IntentModelType
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import java.util.List;
-
-import awais.instagrabber.models.IntentModel;
-import awais.instagrabber.models.enums.IntentModelType;
-
-public final class IntentUtils {
-
-    @Nullable
-    public static IntentModel parseUrl(@NonNull final String url) {
-        final Uri parsedUrl = Uri.parse(url).normalizeScheme();
+object IntentUtils {
+    @JvmStatic
+    fun parseUrl(url: String): IntentModel? {
+        val parsedUrl = Uri.parse(url).normalizeScheme()
 
         // final String domain = parsedUrl.getHost().replaceFirst("^www\\.", "");
         // final boolean isHttpsUri = "https".equals(parsedUrl.getScheme());
-
-        final List<String> paths = parsedUrl.getPathSegments();
-
+        val paths = parsedUrl.pathSegments
         if (paths.isEmpty()) {
-            return null;
+            return null
         }
-
-        String path = paths.get(0);
-        String text = null;
-        IntentModelType type = IntentModelType.UNKNOWN;
-        if (1 == paths.size()) {
-            text = path;
-            type = IntentModelType.USERNAME;
-        } else if ("_u".equals(path)) {
-            text = paths.get(1);
-            type = IntentModelType.USERNAME;
-        } else if ("p".equals(path) || "reel".equals(path) || "tv".equals(path)) {
-            text = paths.get(1);
-            type = IntentModelType.POST;
-        } else if (2 < paths.size() && "explore".equals(path)) {
-            path = paths.get(1);
-
-            if ("locations".equals(path)) {
-                text = paths.get(2);
-                type = IntentModelType.LOCATION;
+        var path = paths[0]
+        var text: String? = null
+        var type = IntentModelType.UNKNOWN
+        if (1 == paths.size) {
+            text = path
+            type = IntentModelType.USERNAME
+        } else if ("_u" == path) {
+            text = paths[1]
+            type = IntentModelType.USERNAME
+        } else if ("p" == path || "reel" == path || "tv" == path) {
+            text = paths[1]
+            type = IntentModelType.POST
+        } else if (2 < paths.size && "explore" == path) {
+            path = paths[1]
+            if ("locations" == path) {
+                text = paths[2]
+                type = IntentModelType.LOCATION
             }
-
-            if ("tags".equals(path)) {
-                text = paths.get(2);
-                type = IntentModelType.HASHTAG;
+            if ("tags" == path) {
+                text = paths[2]
+                type = IntentModelType.HASHTAG
             }
         }
-
-        if (TextUtils.isEmpty(text)) {
-            return null;
-        }
-
-        return new IntentModel(type, text);
+        return if (TextUtils.isEmpty(text)) {
+            null
+        } else IntentModel(type, text!!)
     }
-}
+}

app/src/main/java/awais/instagrabber/utils/KeywordsFilterUtils.kt

@@ -1,49 +1,37 @@
-package awais.instagrabber.utils;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import awais.instagrabber.repositories.responses.Caption;
-import awais.instagrabber.repositories.responses.Media;
-
-public final class KeywordsFilterUtils {
-
-    private final ArrayList<String> keywords;
-
-    public KeywordsFilterUtils(final ArrayList<String> keywords){
-        this.keywords = keywords;
-    }
-
-    public boolean filter(final String caption){
-        if(caption == null) return false;
-        if(keywords.isEmpty()) return false;
-        final String temp = caption.toLowerCase();
-        for(final String s:keywords){
-            if(temp.contains(s)) return true;
+package awais.instagrabber.utils
+
+import awais.instagrabber.repositories.responses.Media
+import java.util.*
+
+class KeywordsFilterUtils(private val keywords: ArrayList<String>) {
+//    fun filter(caption: String?): Boolean {
+//        if (caption == null) return false
+//        if (keywords.isEmpty()) return false
+//        val temp = caption.toLowerCase()
+//        for (s in keywords) {
+//            if (temp.contains(s)) return true
+//        }
+//        return false
+//    }
+
+    fun filter(media: Media?): Boolean {
+        if (media == null) return false
+        val (_, text) = media.caption ?: return false
+        if (keywords.isEmpty()) return false
+        val temp = text!!.lowercase(Locale.getDefault())
+        for (s in keywords) {
+            if (temp.contains(s)) return true
         }
-        return false;
+        return false
     }
 
-    public boolean filter(final Media media){
-        if(media == null) return false;
-        final Caption c = media.getCaption();
-        if(c == null) return false;
-        if(keywords.isEmpty()) return false;
-        final String temp = c.getText().toLowerCase();
-        for(final String s:keywords){
-            if(temp.contains(s)) return true;
-        }
-        return false;
-    }
-
-    public List<Media> filter(final List<Media> media){
-        if(keywords.isEmpty()) return media;
-        if(media == null) return new ArrayList<>();
-
-        final List<Media> result= new ArrayList<>();
-        for(final Media m:media){
-            if(!filter(m)) result.add(m);
+    fun filter(media: List<Media>?): List<Media>? {
+        if (keywords.isEmpty()) return media
+        if (media == null) return ArrayList()
+        val result: MutableList<Media> = ArrayList()
+        for (m in media) {
+            if (!filter(m)) result.add(m)
         }
-        return result;
+        return result
     }
-}
+}

app/src/main/java/awais/instagrabber/utils/ThemeUtils.kt

@@ -1,50 +1,44 @@
-package awais.instagrabber.utils;
+@file:JvmName("ThemeUtils")
 
-import android.content.Context;
-import android.content.res.Configuration;
-import android.os.Build;
+package awais.instagrabber.utils
 
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AppCompatDelegate;
-
-import awais.instagrabber.R;
-
-import static awais.instagrabber.utils.Utils.settingsHelper;
-
-public final class ThemeUtils {
-    private static final String TAG = "ThemeUtils";
-
-    public static void changeTheme(@NonNull final Context context) {
-        int themeCode = AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM; // this is fallback / default
-
-        if (settingsHelper != null) themeCode = settingsHelper.getThemeCode(false);
+import android.content.Context
+import android.content.res.Configuration
+import android.os.Build
+import androidx.appcompat.app.AppCompatDelegate
+import awais.instagrabber.R
 
+object ThemeUtils {
+    fun changeTheme(context: Context) {
+        var themeCode = AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM // this is fallback / default
+        if (Utils.settingsHelper != null) themeCode = Utils.settingsHelper.getThemeCode(false)
         if (themeCode == AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM && Build.VERSION.SDK_INT < 29) {
-            themeCode = AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY;
+            themeCode = AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
         }
-        final boolean isNight = isNight(context, themeCode);
-        final String themeResName = isNight ? settingsHelper.getString(Constants.PREF_DARK_THEME)
-                                            : settingsHelper.getString(Constants.PREF_LIGHT_THEME);
-        final int themeResId = context.getResources().getIdentifier(themeResName, "style", context.getPackageName());
-        final int finalThemeResId;
-        if (themeResId <= 0) {
+        val isNight = isNight(context, themeCode)
+        val themeResName =
+            if (isNight) Utils.settingsHelper.getString(Constants.PREF_DARK_THEME) else Utils.settingsHelper.getString(
+                Constants.PREF_LIGHT_THEME
+            )
+        val themeResId = context.resources.getIdentifier(themeResName, "style", context.packageName)
+        val finalThemeResId: Int
+        finalThemeResId = if (themeResId <= 0) {
             // Nothing set in settings
-            finalThemeResId = isNight ? R.style.AppTheme_Dark_Black
-                                      : R.style.AppTheme_Light_White;
-        } else finalThemeResId = themeResId;
+            if (isNight) R.style.AppTheme_Dark_Black else R.style.AppTheme_Light_White
+        } else themeResId
         // Log.d(TAG, "changeTheme: finalThemeResId: " + finalThemeResId);
-        context.setTheme(finalThemeResId);
+        context.setTheme(finalThemeResId)
     }
 
-    public static boolean isNight(final Context context, final int themeCode) {
+    fun isNight(context: Context, themeCode: Int): Boolean {
         // check if setting is set to 'Dark'
-        boolean isNight = themeCode == AppCompatDelegate.MODE_NIGHT_YES;
+        var isNight = themeCode == AppCompatDelegate.MODE_NIGHT_YES
         // if not dark check if themeCode is MODE_NIGHT_FOLLOW_SYSTEM or MODE_NIGHT_AUTO_BATTERY
         if (!isNight && (themeCode == AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM || themeCode == AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY)) {
             // check if resulting theme would be NIGHT
-            final int uiMode = context.getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
-            isNight = uiMode == Configuration.UI_MODE_NIGHT_YES;
+            val uiMode = context.resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK
+            isNight = uiMode == Configuration.UI_MODE_NIGHT_YES
         }
-        return isNight;
+        return isNight
     }
-}
+}