fix: Trim only trailing slashes in URLs (#278)

Updated the clerk.JoinPath method to trim slashes only at the end of
URLs.

clerk.go

@@ -275,7 +275,6 @@ func (b *defaultBackend) newRequest(ctx context.Context, apiReq *APIRequest) (*h
 	req.Header.Add("Clerk-API-Version", clerkAPIVersion)
 	req.Header.Add("X-Clerk-SDK", fmt.Sprintf("go/%s", sdkVersion))
 	b.CustomRequestHeaders.apply(req)
-	req = req.WithContext(ctx)
 
 	return req, nil
 }
@@ -492,7 +491,7 @@ func JoinPath(base string, elem ...string) (string, error) {
 	// multiple backslashes in a row with one backslash, preserve the
 	// protocol's two backslashes.
 	// e.g. http://foo.com//bar/ will become http://foo.com/bar
-	res := extraBackslashesRE.ReplaceAllString(strings.Trim(sb.String(), "/"), "$1/")
+	res := extraBackslashesRE.ReplaceAllString(strings.TrimRight(sb.String(), "/"), "$1/")
 
 	// Make sure we have a valid URL.
 	u, err := url.Parse(res)

clerk_test.go

@@ -455,3 +455,32 @@ func TestBackendCall_Multipart(t *testing.T) {
 	err := GetBackend().Call(ctx, req, &testResource{})
 	require.NoError(t, err)
 }
+
+func TestJoinPath(t *testing.T) {
+	t.Parallel()
+	for _, tc := range []struct {
+		base  string
+		paths []string
+		want  string
+	}{
+		{base: "clerk.com", paths: []string{"baz", "1"}, want: "clerk.com/baz/1"},
+		{base: "https://clerk.com", paths: []string{"baz", "1"}, want: "https://clerk.com/baz/1"},
+		{base: "http://clerk.com", paths: []string{"baz", "1"}, want: "http://clerk.com/baz/1"},
+		{base: "https://clerk.com", paths: []string{"/baz", "1/"}, want: "https://clerk.com/baz/1"},
+		{base: "https://clerk.com", paths: []string{"/baz/", "/1/"}, want: "https://clerk.com/baz/1"},
+		{base: "https://clerk.com", paths: []string{"//baz/", "/1/"}, want: "https://clerk.com/baz/1"},
+		{base: "https://clerk.com", paths: []string{"//baz/", "///1/"}, want: "https://clerk.com/baz/1"},
+		{base: "https://clerk.com", paths: []string{"/baz/", "/1?foo=bar&baz=bar/"}, want: "https://clerk.com/baz/1?foo=bar&baz=bar"},
+	} {
+		got, err := JoinPath(tc.base, tc.paths...)
+		require.NoError(t, err)
+		require.Equal(t, tc.want, got)
+
+		got, err = JoinPath(tc.base+"/", tc.paths...)
+		require.NoError(t, err)
+		require.Equal(t, tc.want, got)
+	}
+
+	_, err := JoinPath("https://clerk.com", "*%{wontwork$")
+	require.Error(t, err)
+}