internal/engine/bridge/console.go - master - t3/cli

package bridge

import (
	"bytes"
	"fmt"
	"io"
	"log/slog"
	"time"

	"github.com/dop251/goja"
)

func NewConsole(vm *goja.Runtime, logger *slog.Logger, controllerWriter io.Writer) {
	obj := vm.NewObject()

	obj.Set("log", func(call goja.FunctionCall) goja.Value {
		if len(call.Arguments) > 0 {
			msg := buildConsoleMessage(call.Arguments)
			logger.Info("console.log called", "msg", msg)
			if controllerWriter != nil {
				fmt.Fprintf(controllerWriter, "[INFO] %s : console.log called\n  msg: %s\n",
					time.Now().Format(time.RFC3339), msg)
			}
		}
		return goja.Undefined()
	})

	obj.Set("error", func(call goja.FunctionCall) goja.Value {
		if len(call.Arguments) > 0 {
			msg := buildConsoleMessage(call.Arguments)
			logger.Error("console.error called", "msg", msg)
			if controllerWriter != nil {
				fmt.Fprintf(controllerWriter, "[ERROR] %s : console.error called\n  msg: %s\n",
					time.Now().Format(time.RFC3339), msg)
			}
		}
		return goja.Undefined()
	})

	vm.Set("console", obj)
}

func buildConsoleMessage(values []goja.Value) string {
	var buf bytes.Buffer
	for i, arg := range values {
		if i > 0 {
			buf.WriteByte(' ')
		}
		buf.WriteString(arg.String())
	}
	return buf.String()
}