JTT - Json Translate Tool (Beta)

Imports System.IO
Imports System.Net.Http
Imports System.Text.Json
Imports System.Text.Json.Nodes
Imports System.Threading.Tasks

Public Class JTT

Private ReadOnly httpClient As New HttpClient()
Private stringsToTranslate As Integer = 0
Private translatedCount As Integer = 0

Private Sub JTTMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim languages As String() = {"en", "de", "fr", "es", "ru", "zh", "it", "ja"}
ComboBoxSource.Items.AddRange(languages)
ComboBoxTarget.Items.AddRange(languages)
ComboBoxSource.SelectedItem = "en"
ComboBoxTarget.SelectedItem = "de"
End Sub

Private Async Sub TSMRead_Click(sender As Object, e As EventArgs) Handles TSMRead.Click
If ComboBoxSource.SelectedItem Is Nothing OrElse ComboBoxTarget.SelectedItem Is Nothing Then
MsgBox("Bitte wähle eine Ausgangs- und eine Zielsprache aus.", MsgBoxStyle.Exclamation)
Return
End If

Dim openFileDialog As New OpenFileDialog With {.Filter = "JSON Files|*.json", .Title = "Wähle die Minecraft Sprachdatei aus"}

If openFileDialog.ShowDialog() = DialogResult.OK Then
TSMRead.Enabled = False
' Datei in RichTextBox laden
RichTextBox1.Text = File.ReadAllText(openFileDialog.FileName)

Await ProcessTranslationAsync(openFileDialog.FileName, ComboBoxSource.SelectedItem.ToString(), ComboBoxTarget.SelectedItem.ToString())

TSMRead.Enabled = True
End If
End Sub

Private Async Function ProcessTranslationAsync(filePath As String, sourceLang As String, targetLang As String) As Task
Dim jsonContent As String = File.ReadAllText(filePath)
Dim rootNode As JsonNode = JsonNode.Parse(jsonContent)

' Fortschritt initialisieren
translatedCount = 0
stringsToTranslate = CountStrings(rootNode)
ProgressBar1.Value = 0
ProgressBar1.Maximum = stringsToTranslate

' Rekursive Übersetzung
Await TranslateNodeRecursiveAsync(rootNode, sourceLang, targetLang)

' Ergebnis in RichTextBox und speichern
Dim options As New JsonSerializerOptions With {.WriteIndented = True, .Encoder = System.Text.Encodings.Web.JavaScriptEncoder.Unsafe RelaxedJsonEscaping}
Dim outputJson As String = rootNode.ToJsonString(options)

RichTextBox1.Text = outputJson ' Nur das Ergebnis anzeigen

Dim savePath As String = Path.Combine(Path.GetDirectoryName(filePath), $"{targetLang}_translated.json")
File.WriteAllText(savePath, outputJson)

MsgBox("Übersetzung abgeschlossen!", MsgBoxStyle.Information)
End Function

' Hilfsfunktion zum Zählen der Strings für die ProgressBar
Private Function CountStrings(node As JsonNode) As Integer
Dim count As Integer = 0
If node Is Nothing Then Return 0
If node.GetValueKind() = JsonValueKind.String Then Return 1
If TypeOf node Is JsonObject Then
For Each kvp In node.AsObject() : count += CountStrings(kvp.Value) : Next
ElseIf TypeOf node Is JsonArray Then
For Each element In node.AsArray() : count += CountStrings(element) : Next
End If
Return count
End Function

Private Async Function TranslateNodeRecursiveAsync(node As JsonNode, sourceLang As String, targetLang As String) As Task
If node Is Nothing Then Return

If node.GetValueKind() = JsonValueKind.String Then
Dim originalText As String = node.GetValue(Of String)()
If Not String.IsNullOrWhiteSpace(originalText) Then
node.ReplaceWith(JsonValue.Create(Await TranslateTextAsync(originalText, sourceLang, targetLang)))

' Fortschritt aktualisieren
translatedCount += 1
ProgressBar1.Value = Math.Min(translatedCount, ProgressBar1.Maximum)
End If
ElseIf TypeOf node Is JsonObject Then
For Each kvp In node.AsObject().ToList() : Await TranslateNodeRecursiveAsync(kvp.Value, sourceLang, targetLang) : Next
ElseIf TypeOf node Is JsonArray Then
For Each element In node.AsArray().ToList() : Await TranslateNodeRecursiveAsync(element, sourceLang, targetLang) : Next
End If
End Function

Private Async Function TranslateTextAsync(text As String, fromLang As String, toLang As String) As Task(Of String)
Try
Dim url As String = $"https://translate.googleapis.com/translate_a/single?client=gtx&sl={fromLang}&tl={toLang}&dt=t&q ={Uri.EscapeDataString(text)}"
Dim response As String = Await httpClient.GetStringAsync(url)
Using doc As JsonDocument = JsonDocument.Parse(response)
Return doc.RootElement(0)(0)(0).GetString()
End Using
Catch
Return text
End Try
End Function

End Class