add handling for file saving from Send intent

Author: tibbi

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/SaveAsActivity.kt

@@ -1,17 +1,54 @@
 package com.simplemobiletools.filemanager.pro.activities
 
 import android.content.Intent
+import android.net.Uri
 import android.os.Bundle
-import com.simplemobiletools.commons.extensions.toast
+import com.simplemobiletools.commons.dialogs.FilePickerDialog
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.ensureBackgroundThread
 import com.simplemobiletools.filemanager.pro.R
+import com.simplemobiletools.filemanager.pro.extensions.config
+import java.io.File
 
 class SaveAsActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_save_as)
 
         if (intent.action == Intent.ACTION_SEND && intent.extras?.containsKey(Intent.EXTRA_STREAM) == true) {
+            FilePickerDialog(this, pickFile = false, showHidden = config.shouldShowHidden, showFAB = true) {
+                val destination = it
+                handleSAFDialog(destination) {
+                    toast(R.string.saving)
+                    ensureBackgroundThread {
+                        try {
+                            if (!getDoesFilePathExist(destination)) {
+                                if (needsStupidWritePermissions(destination)) {
+                                    val document = getDocumentFile(destination)
+                                    document!!.createDirectory(destination.getFilenameFromPath())
+                                } else {
+                                    File(destination).mkdirs()
+                                }
+                            }
 
+                            val source = intent.getParcelableExtra<Uri>(Intent.EXTRA_STREAM)
+                            val mimeType = source!!.toString().getMimeType()
+                            val inputStream = contentResolver.openInputStream(source)
+                            val filename = source.toString().getFilenameFromPath()
+
+                            val destinationPath = "$destination/$filename"
+                            val outputStream = getFileOutputStreamSync(destinationPath, mimeType, null)!!
+                            inputStream!!.copyTo(outputStream)
+                            rescanPaths(arrayListOf(destinationPath))
+                            toast(R.string.file_saved)
+                            finish()
+                        } catch (e: Exception) {
+                            showErrorToast(e)
+                            finish()
+                        }
+                    }
+                }
+            }
         } else {
             toast(R.string.unknown_error_occurred)
             finish()