Widget import export

app/src/main/kotlin/com/github/premnirmal/ticker/settings/ExportTasks.kt

@@ -4,6 +4,10 @@ import android.content.Context
 import android.net.Uri
 import com.github.premnirmal.ticker.components.Injector
 import com.github.premnirmal.ticker.network.data.Quote
+import com.github.premnirmal.ticker.widget.WidgetData
+import com.google.gson.ExclusionStrategy
+import com.google.gson.FieldAttributes
+import com.google.gson.annotations.SerializedName
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import timber.log.Timber
@@ -84,4 +88,71 @@ internal object PortfolioExporter {
       }
       return@withContext uri.path
     }
+}
+internal object WidgetExporter {
+  private val gson = Injector.appComponent().gson()
+    suspend fun exportWidget(file: File, vararg widgetData: WidgetData): String? =
+    withContext(Dispatchers.IO){
+    try {
+      val jsonString = getJSONFrom(widgetData[0])
+      val fileOutputStream = FileOutputStream(file)
+      fileOutputStream.use { it.write(jsonString.toByteArray()) }
+    } catch (e: IOException){
+      Timber.e(e)
+      return@withContext null
+    }
+    return@withContext file.path
+  }
+  suspend fun exportWidget(context: Context, uri: Uri, vararg widgetData: WidgetData): String? =
+    withContext(Dispatchers.IO) {
+      try {
+        val jsonString = getJSONFrom(widgetData[0])
+        val contentResolver = context.applicationContext.contentResolver
+
+         contentResolver.openFileDescriptor(uri, "rwt")
+          ?.use {
+            FileOutputStream(it.fileDescriptor).use { fileOutputStream ->
+              fileOutputStream.write((jsonString.toByteArray()))
+            }
+          }
+      } catch (e: IOException) {
+        Timber.e(e)
+        return@withContext  null
+      }
+      return@withContext uri.path
+    }
+
+  private fun getJSONFrom(widgetData: WidgetData): String {
+    val json = gson.newBuilder().serializeNulls().setPrettyPrinting()
+    //json.setExclusionStrategies(FieldExcluder)
+    val exportWidget = ExportWidget(widgetData)
+    val mygson :String = json.create().toJson(exportWidget)
+    return mygson
+  }
+
+  object FieldExcluder : ExclusionStrategy {
+    override fun shouldSkipField(f: FieldAttributes?): Boolean {
+      val name = f?.getAnnotation(SerializedName::class.java)?.value
+      if (name ==null) return true
+      return false
+    }
+
+    override fun shouldSkipClass(clazz: Class<*>?): Boolean {
+      val qualifier = clazz?.name
+      when (qualifier) {
+        "com.github.premnirmal.ticker.widget.WidgetData" -> return false
+        "com.github.premnirmal.ticker.AppPreferences" -> return false
+        "java.lang.String" -> return false
+        "java.util.List" -> return false
+        "android.content.SharedPreferences" -> return false
+        "int" -> return false
+        "java.lang.Integer" -> return false
+        "android.app.SharedPreferencesImpl" -> return false
+
+        else
+          -> return true
+      }
+    }
+  }
+
 }

app/src/main/kotlin/com/github/premnirmal/ticker/settings/ExportWidget.kt

@@ -0,0 +1,32 @@
+package com.github.premnirmal.ticker.settings
+
+import com.github.premnirmal.ticker.AppPreferences.Companion.toCommaSeparatedString
+import com.github.premnirmal.ticker.widget.WidgetData
+
+class ExportWidget() {
+    lateinit var name: String
+    lateinit var tickerList: String  // csv list of tickers
+
+    lateinit var autoSort: String
+    lateinit var hideHeader: String
+    lateinit var showCurrency: String
+    lateinit var showBold: String
+
+    lateinit var widgetSize: String   //
+    lateinit var layout: String       //
+    lateinit var textColor: String
+    lateinit var background: String
+
+    constructor(widgetData: WidgetData) : this() {
+        name = widgetData.widgetName()
+        tickerList = widgetData.getTickers().toCommaSeparatedString()
+        autoSort = widgetData.autoSortEnabled.value.toString()
+        showCurrency = widgetData.isCurrencyEnabled().toString()
+        showBold = widgetData.isBoldEnabled().toString()
+        hideHeader = widgetData.hideHeader().toString()
+        widgetSize = widgetData.widgetSizePref().toString() // either 0 (default) or 1 (1 ticker per row)
+        layout = widgetData.layoutPref().toString()         // 0 Anim,1 Tabs,2 Fixed,3(?)Myportfolio
+        textColor = widgetData.textColorPref().toString()   // 0 Sys, 1 Light,2 Dark
+        background = widgetData.bgPref().toString()         // 0 Sys, 1, Transparent, 2 Translucent
+    }
+}