fix(vscode): Get git remote for explain code. (TabbyML#2254)

* fix(vscode): Get git remote for explain code.

* fix: fix filepath when git url provided.

clients/vscode/src/Commands.ts

@@ -221,12 +221,20 @@ export class Commands {
 
       const editor = window.activeTextEditor;
       if (editor) {
+        const uri = editor.document.uri;
         const text = editor.document.getText(editor.selection);
-        const workspaceFolder = workspace.workspaceFolders?.[0]?.uri.fsPath || "";
+        const workspaceFolder = workspace.getWorkspaceFolder(uri);
+        const repo = this.gitProvider.getRepository(uri);
+        const remoteUrl = repo ? this.gitProvider.getDefaultRemoteUrl(repo) : undefined;
+        let filePath = uri.toString();
+        if (repo) {
+          filePath = filePath.replace(repo.rootUri.toString(), "");
+        } else if (workspaceFolder) {
+          filePath = filePath.replace(workspaceFolder.uri.toString(), "");
+        }
 
         commands.executeCommand("tabby.chatView.focus");
 
-        const filePath = editor.document.fileName.replace(workspaceFolder, "");
         this.chatViewProvider.sendMessage({
           message: "Explain the selected code:",
           selectContext: {
@@ -237,7 +245,7 @@ export class Commands {
               end: editor.selection.end.line + 1,
             },
             filepath: filePath.startsWith("/") ? filePath.substring(1) : filePath,
-            git_url: "https://github.com/tabbyML/tabby", // FIXME
+            git_url: remoteUrl ?? "",
           },
         });
       } else {