Convert `ViewIntentFinder` to Kotlin

package com.fsck.k9.ui.messageview;

import java.util.List;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.net.Uri;

import androidx.annotation.WorkerThread;

import com.fsck.k9.helper.MimeTypeUtil;

import com.fsck.k9.provider.AttachmentTempFileProvider;

package com.fsck.k9.ui.messageview

import android.content.Context

import android.content.Intent

import android.content.pm.PackageManager

import android.net.Uri

import androidx.annotation.WorkerThread

import com.fsck.k9.helper.MimeTypeUtil

import com.fsck.k9.provider.AttachmentTempFileProvider

/**

 * Tries to find an {@link Intent#ACTION_VIEW} Intent that can be used to view an attachment.

 * Tries to find an [Intent.ACTION_VIEW] Intent that can be used to view an attachment.

 */

class ViewIntentFinder {

    private final Context context;

    public ViewIntentFinder(Context context) {

        this.context = context;

    }

internal class ViewIntentFinder(private val context: Context) {

    @WorkerThread

    public Intent getBestViewIntent(Uri contentUri, String displayName, String mimeType) {

        String inferredMimeType = MimeTypeUtil.getMimeTypeByExtension(displayName);

    fun getBestViewIntent(contentUri: Uri, displayName: String?, mimeType: String): Intent {

        val inferredMimeType = MimeTypeUtil.getMimeTypeByExtension(displayName)

        IntentAndResolvedActivitiesCount resolvedIntentInfo;

        var resolvedIntentInfo: IntentAndResolvedActivitiesCount

        if (MimeTypeUtil.isDefaultMimeType(mimeType)) {

            resolvedIntentInfo = getViewIntentForMimeType(contentUri, inferredMimeType);

            resolvedIntentInfo = getViewIntentForMimeType(contentUri, inferredMimeType)

        } else {

            resolvedIntentInfo = getViewIntentForMimeType(contentUri, mimeType);

            if (!resolvedIntentInfo.hasResolvedActivities() && !inferredMimeType.equals(mimeType)) {

                resolvedIntentInfo = getViewIntentForMimeType(contentUri, inferredMimeType);

            resolvedIntentInfo = getViewIntentForMimeType(contentUri, mimeType)

            if (!resolvedIntentInfo.hasResolvedActivities() && inferredMimeType != mimeType) {

                resolvedIntentInfo = getViewIntentForMimeType(contentUri, inferredMimeType)

            }

        }

        if (!resolvedIntentInfo.hasResolvedActivities()) {

            resolvedIntentInfo = getViewIntentForMimeType(contentUri, MimeTypeUtil.DEFAULT_ATTACHMENT_MIME_TYPE);

            resolvedIntentInfo = getViewIntentForMimeType(contentUri, MimeTypeUtil.DEFAULT_ATTACHMENT_MIME_TYPE)

        }

        return resolvedIntentInfo.getIntent();

        return resolvedIntentInfo.intent

    }

    private IntentAndResolvedActivitiesCount getViewIntentForMimeType(Uri contentUri, String mimeType) {

        Intent contentUriIntent = createViewIntentForAttachmentProviderUri(contentUri, mimeType);

        int contentUriActivitiesCount = getResolvedIntentActivitiesCount(contentUriIntent);

    private fun getViewIntentForMimeType(contentUri: Uri, mimeType: String): IntentAndResolvedActivitiesCount {

        val contentUriIntent = createViewIntentForAttachmentProviderUri(contentUri, mimeType)

        val contentUriActivitiesCount = getResolvedIntentActivitiesCount(contentUriIntent)

        return new IntentAndResolvedActivitiesCount(contentUriIntent, contentUriActivitiesCount);

        return IntentAndResolvedActivitiesCount(contentUriIntent, contentUriActivitiesCount)

    }

    private Intent createViewIntentForAttachmentProviderUri(Uri contentUri, String mimeType) {

        Uri uri = AttachmentTempFileProvider.getMimeTypeUri(contentUri, mimeType);

        Intent intent = new Intent(Intent.ACTION_VIEW);

        intent.setDataAndType(uri, mimeType);

        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

        addUiIntentFlags(intent);

    private fun createViewIntentForAttachmentProviderUri(contentUri: Uri, mimeType: String): Intent {

        val uri = AttachmentTempFileProvider.getMimeTypeUri(contentUri, mimeType)

        return intent;

    }

        val intent = Intent(Intent.ACTION_VIEW)

        intent.setDataAndType(uri, mimeType)

        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)

        addUiIntentFlags(intent)

    private void addUiIntentFlags(Intent intent) {

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);

        return intent

    }

    private int getResolvedIntentActivitiesCount(Intent intent) {

        PackageManager packageManager = context.getPackageManager();

        List<ResolveInfo> resolveInfos =

            packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);

        return resolveInfos.size();

    private fun addUiIntentFlags(intent: Intent) {

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET)

    }

    private static class IntentAndResolvedActivitiesCount {

        private Intent intent;

        private int activitiesCount;

    private fun getResolvedIntentActivitiesCount(intent: Intent): Int {

        val packageManager = context.packageManager

        IntentAndResolvedActivitiesCount(Intent intent, int activitiesCount) {

            this.intent = intent;

            this.activitiesCount = activitiesCount;

        }

        val resolveInfos =

            packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)

        public Intent getIntent() {

            return intent;

        return resolveInfos.size

    }

        public boolean hasResolvedActivities() {

            return activitiesCount > 0;

    private class IntentAndResolvedActivitiesCount(val intent: Intent, private val activitiesCount: Int) {

        fun hasResolvedActivities(): Boolean {

            return activitiesCount > 0

        }

    }

}