From 6642597fbce56a232f696536e043529c74c4259c Mon Sep 17 00:00:00 2001
From: Ben Krieger <ben.krieger@intel.com>
Date: Wed, 30 Oct 2024 15:37:27 -0400
Subject: [PATCH] Support []byte arguments to D1 Query/Exec

---
 cloudflare/d1/rows.go | 13 ++++++++++---
 cloudflare/d1/stmt.go | 22 +++++++++++++++++++---
 2 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/cloudflare/d1/rows.go b/cloudflare/d1/rows.go
index 76c3f81..ee97465 100644
--- a/cloudflare/d1/rows.go
+++ b/cloudflare/d1/rows.go
@@ -7,6 +7,8 @@ import (
 	"math"
 	"sync"
 	"syscall/js"
+
+	"github.com/syumai/workers/internal/jsutil"
 )
 
 type rows struct {
@@ -61,9 +63,14 @@ func convertRowColumnValueToAny(v js.Value) (driver.Value, error) {
 	case js.TypeString:
 		return v.String(), nil
 	case js.TypeObject:
-		// TODO: handle BLOB type (ArrayBuffer).
-		// see: https://developers.cloudflare.com/d1/platform/client-api/#type-conversion
-		return nil, errors.New("d1: row column value type object is not currently supported")
+		// handle BLOB type (ArrayBuffer).
+		src := jsutil.Uint8ArrayClass.New(v)
+		dst := make([]byte, src.Length())
+		n := js.CopyBytesToGo(dst, src)
+		if n != len(dst) {
+			return nil, errors.New("incomplete copy from Uint8Array")
+		}
+		return dst[:n], nil
 	}
 	return nil, errors.New("d1: unexpected row column value type")
 }
diff --git a/cloudflare/d1/stmt.go b/cloudflare/d1/stmt.go
index fe2cc1b..55593cc 100644
--- a/cloudflare/d1/stmt.go
+++ b/cloudflare/d1/stmt.go
@@ -34,11 +34,19 @@ func (s *stmt) Exec([]driver.Value) (driver.Result, error) {
 }
 
 // ExecContext executes prepared statement.
-// Given []drier.NamedValue's `Name` field will be ignored because Cloudflare D1 client doesn't support it.
+// Given []driver.NamedValue's `Name` field will be ignored because Cloudflare D1 client doesn't support it.
 func (s *stmt) ExecContext(_ context.Context, args []driver.NamedValue) (driver.Result, error) {
 	argValues := make([]any, len(args))
 	for i, arg := range args {
-		argValues[i] = arg.Value
+		if src, ok := arg.Value.([]byte); ok {
+			dst := jsutil.Uint8ArrayClass.New(len(src))
+			if n := js.CopyBytesToJS(dst, src); n != len(src) {
+				return nil, errors.New("incomplete copy into Uint8Array")
+			}
+			argValues[i] = dst
+		} else {
+			argValues[i] = arg.Value
+		}
 	}
 	resultPromise := s.stmtObj.Call("bind", argValues...).Call("run")
 	resultObj, err := jsutil.AwaitPromise(resultPromise)
@@ -57,7 +65,15 @@ func (s *stmt) Query([]driver.Value) (driver.Rows, error) {
 func (s *stmt) QueryContext(_ context.Context, args []driver.NamedValue) (driver.Rows, error) {
 	argValues := make([]any, len(args))
 	for i, arg := range args {
-		argValues[i] = arg.Value
+		if src, ok := arg.Value.([]byte); ok {
+			dst := jsutil.Uint8ArrayClass.New(len(src))
+			if n := js.CopyBytesToJS(dst, src); n != len(src) {
+				return nil, errors.New("incomplete copy into Uint8Array")
+			}
+			argValues[i] = dst
+		} else {
+			argValues[i] = arg.Value
+		}
 	}
 	resultPromise := s.stmtObj.Call("bind", argValues...).Call("raw", map[string]any{"columnNames": true})
 	rowsArray, err := jsutil.AwaitPromise(resultPromise)