so preview and complition is technially working, but it overwrites in preview mode the current code

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "fabelous-autocoder",
-	"version": "0.2.6",
+	"version": "0.2.61",
 	"displayName": "Fabelous Autocoder",
 	"description": "A simple to use Ollama autocompletion Plugin",
 	"icon": "icon.png",

src/extension.ts

@@ -48,6 +48,7 @@ function getContextLines(document: vscode.TextDocument, position: vscode.Positio
     return lines.join("\n");
 }
 
+
 function createFIMPrompt(prefix: string, language: string): string {
     return `<fim_prefix>${prefix}<fim_middle><fim_suffix>${language}\n`;
 }
@@ -59,14 +60,26 @@ const previewDecorationType = vscode.window.createTextEditorDecorationType({
     },
     textDecoration: 'none; display: none;', // Hide the original text
 });
+// Generate extra lines for the preview
+function generateExtraPreviewLines(document: vscode.TextDocument, position: vscode.Position, numLines: number): string[] {
+    const extraLines = [];
+    const startLine = position.line + 1;
+    const endLine = Math.min(document.lineCount - 1, startLine + numLines - 1);
 
+    for (let i = startLine; i <= endLine; i++) {
+        extraLines.push(document.lineAt(i).text);
+    }
+
+    return extraLines;
+}
 
 async function autocompleteCommand(textEditor: vscode.TextEditor, cancellationToken?: vscode.CancellationToken) {
     const document = textEditor.document;
     const position = textEditor.selection.active;
-
+    const contextLines = 2;
-    // Get the context and create the FIM prompt
+    const startLine = Math.max(0, position.line - contextLines);
     const context = getContextLines(document, position);
+
     const fimPrompt = createFIMPrompt(context, document.languageId);
 
     vscode.window.withProgress(
@@ -89,6 +102,9 @@ async function autocompleteCommand(textEditor: vscode.TextEditor, cancellationTo
                     vscode.workspace.onDidCloseTextDocument(axiosCancelPost);
                 });
 
+                // Increase the number of tokens to predict
+                const extendedNumPredict = numPredict * 2; // Adjust this multiplier as needed
+
                 // Make the API request
                 const response = await axios.post(apiEndpoint, {
                     model: apiModel,
@@ -96,7 +112,7 @@ async function autocompleteCommand(textEditor: vscode.TextEditor, cancellationTo
                     stream: false,
                     raw: true,
                     options: {
-                        num_predict: numPredict,
+                        num_predict: extendedNumPredict,
                         temperature: apiTemperature,
                         stop: ["<fim_suffix>", "```"]
                     }
@@ -113,24 +129,25 @@ async function autocompleteCommand(textEditor: vscode.TextEditor, cancellationTo
                 completionText = completionText.replace(/<fim_middle>|<fim_suffix>|<fim_prefix>/g, '').trim();
 
                 // Split the completion text by new lines
-                const lines = completionText.split('\n');
+                const newLines = completionText.split('\n');
 
-                // Define the start line based on the current position
+                // Calculate the number of new lines in the completion
-                const startLine = position.line;
+                const completionLineCount = newLines.length;
-                const endLine = Math.min(startLine + lines.length, document.lineCount);
 
-                // Apply the preview, replacing existing content
+                // Ensure we have at least as many new lines as the completion, plus some extra
+                const extraLines = 1; // You can adjust this number
+                const totalNewLines = Math.max(completionLineCount + extraLines, position.line - startLine + 1);
+
+                // Create preview decorations
                 const previewRanges: vscode.DecorationOptions[] = [];
-                for (let i = 0; i < lines.length; i++) {
+                for (let i = 0; i < totalNewLines; i++) {
-                    const currentLine = startLine + i;
+                    const lineContent = i < newLines.length ? newLines[i] : '';
-                    if (currentLine >= document.lineCount) break;
+                    const range = new vscode.Range(startLine + i, 0, startLine + i + 1, 0);
-
-                    const range = document.lineAt(currentLine).range;
                     previewRanges.push({
                         range,
                         renderOptions: {
                             after: {
-                                contentText: lines[i],
+                                contentText: lineContent,
                             }
                         }
                     });
@@ -157,15 +174,19 @@ async function autocompleteCommand(textEditor: vscode.TextEditor, cancellationTo
                             textEditor.setDecorations(previewDecorationType, []);
                             const edit = new vscode.WorkspaceEdit();
 
-                            const rangeToReplace = new vscode.Range(
+                            // Create the text to insert: completion text plus extra newlines
-                                new vscode.Position(startLine, 0),
+                            const insertText = completionText + '\n'.repeat(Math.max(0, totalNewLines - completionLineCount));
-                                new vscode.Position(endLine, document.lineAt(endLine - 1).range.end.character)
-                            );
 
-                            edit.replace(document.uri, rangeToReplace, completionText);
+                            // Replace the context with the new text
+                            const replaceRange = new vscode.Range(startLine, 0, position.line + 1, 0);
+                            edit.replace(document.uri, replaceRange, insertText);
 
                             await vscode.workspace.applyEdit(edit);
-                            await document.save(); // Optionally save after replacing
+                            await document.save(); // Optionally save after inserting
+
+                            // Move the cursor to the end of the inserted completion
+                            const newPosition = new vscode.Position(startLine + totalNewLines, 0);
+                            textEditor.selection = new vscode.Selection(newPosition, newPosition);
 
                             disposable.dispose();
                             previewInserted = false;