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package server
import (	"bytes"	"context"	"encoding/json"	"fmt"	"os"	"os/exec"	"path"	"strings"	"time"
	"github.com/ije/gox/utils")
// allowlist for _invoke_ modevar requireModeAllowList = []string{	"@babel/types",	"cheerio",	"graceful-fs",	"he",	"jsbn",	"netmask",	"xml2js",	"keycode",	"lru_map",	"lz-string",	"maplibre-gl",	"pako",	"postcss-selector-parser",	"react-draggable",	"resolve",	"safe-buffer",	"seedrandom",	"stream-browserify",	"stream-http",	"typescript",	"vscode-oniguruma",	"web-streams-ponyfill",}
func initCJSLexerWorkDirectory() (err error) {	wd := path.Join(cfg.WorkDir, "ns")	err = ensureDir(wd)	if err != nil {		return err	}
	// install services	cmd := exec.Command("pnpm", "i", "enhanced-resolve@5.15.0", "esm-cjs-lexer@0.10.0")	cmd.Dir = wd	var output []byte	output, err = cmd.CombinedOutput()	if err != nil {		err = fmt.Errorf("install services: %v %s", err, string(output))		return	}
	// create ns script	js, err := embedFS.ReadFile("server/embed/cjs_lexer.js")	if err != nil {		panic(err)	}	err = os.WriteFile(path.Join(wd, "cjs_lexer.js"), js, 0644)	return}
type cjsExportsResult struct {	Reexport      string   `json:"reexport,omitempty"`	ExportDefault bool     `json:"exportDefault"`	Exports       []string `json:"exports"`	Error         string   `json:"error"`	Stack         string   `json:"stack"`}
func cjsLexer(cwd string, importPath string, nodeEnv string) (ret cjsExportsResult, err error) {	start := time.Now()	args := map[string]interface{}{		"cwd":        cwd,		"importPath": importPath,		"nodeEnv":    nodeEnv,	}
	/* workaround for edge cases that can't be parsed by cjsLexer correctly */	for _, name := range requireModeAllowList {		if importPath == name || strings.HasPrefix(importPath, name+"/") {			args["requireMode"] = 1			break		}	}
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)	defer cancel()
	var outBuf bytes.Buffer	var errBuf bytes.Buffer
	cmd := exec.CommandContext(ctx, "node", "cjs_lexer.js")	cmd.Dir = path.Join(cfg.WorkDir, "ns")	cmd.Stdin = bytes.NewBuffer(utils.MustEncodeJSON(args))	cmd.Stdout = &outBuf	cmd.Stderr = &errBuf
	err = cmd.Run()	if err != nil {		if errBuf.Len() > 0 {			err = fmt.Errorf("cjsLexer: %s", errBuf.String())		}		return	}
	err = json.Unmarshal(outBuf.Bytes(), &ret)	if err != nil {		return	}
	if ret.Error != "" {		if ret.Stack != "" {			log.Errorf("[cjsLexer] %s\n---\n%s\n---", ret.Error, ret.Stack)		} else {			log.Errorf("[cjsLexer] %s", ret.Error)		}	} else {		log.Debugf("[cjsLexer] parse %s in %s", importPath, time.Since(start))	}
	return}