From df70e0af072f065767e225454e79262cdf85653a Mon Sep 17 00:00:00 2001
From: Alexander Wang <alex@terrastruct.com>
Date: Wed, 13 Nov 2024 12:17:49 -0700
Subject: [PATCH] get board at position

---
 d2js/js.go | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/d2js/js.go b/d2js/js.go
index 6c03d4998d..e21c03f5bc 100644
--- a/d2js/js.go
+++ b/d2js/js.go
@@ -26,6 +26,7 @@ func main() {
 	js.Global().Set("d2GetObjOrder", js.FuncOf(jsGetObjOrder))
 	js.Global().Set("d2GetRefRanges", js.FuncOf(jsGetRefRanges))
 	js.Global().Set("d2Compile", js.FuncOf(jsCompile))
+	js.Global().Set("d2GetBoardAtPosition", js.FuncOf(jsGetBoardAtPosition))
 	js.Global().Set("d2Parse", js.FuncOf(jsParse))
 	js.Global().Set("d2Encode", js.FuncOf(jsEncode))
 	js.Global().Set("d2Decode", js.FuncOf(jsDecode))
@@ -302,3 +303,31 @@ func jsDecode(this js.Value, args []js.Value) interface{} {
 func jsVersion(this js.Value, args []js.Value) interface{} {
 	return version.Version
 }
+
+type jsBoardAtPosition struct {
+	BoardPath []string `json:"boardPath"`
+	Error     string   `json:"error"`
+}
+
+func jsGetBoardAtPosition(this js.Value, args []js.Value) interface{} {
+	dsl := args[0].String()
+	line := args[1].Int()
+	column := args[2].Int()
+
+	boardPath, err := d2lsp.GetBoardAtPosition(dsl, d2ast.Position{
+		Line:   line,
+		Column: column,
+	})
+
+	if err != nil {
+		ret := jsBoardAtPosition{Error: err.Error()}
+		str, _ := json.Marshal(ret)
+		return string(str)
+	}
+
+	resp := jsBoardAtPosition{
+		BoardPath: boardPath,
+	}
+	str, _ := json.Marshal(resp)
+	return string(str)
+}