package main

import (
	`bytes`
	`fmt`
	`go/ast`
	`go/parser`
	`go/token`
	`log`
	`os`

	`r00t2.io/sysutils/paths`
)

/*
	DO NOT RUN THIS ANYWHERE BUT FROM WHERE <r00t2.io/cryptparse>/consts.go IS LOCATED.
*/

// I *cannot believe* a library does not exist that will do this for me.

func main() {
	var err error
	var tfs *token.FileSet
	var af *ast.File
	var foundParams []*ParamConst
	var paramConsts []*ParamConst
	var buf *bytes.Buffer = new(bytes.Buffer)

	if err = paths.RealPath(&constsPath); err != nil {
		return
	}
	if err = paths.RealPath(&outPath); err != nil {
		return
	}

	tfs = token.NewFileSet()

	if af, err = parser.ParseFile(tfs, constsPath, nil, parser.AllErrors|parser.ParseComments); err != nil {
		log.Panicln(err)
	}

	for _, d := range af.Decls {
		if foundParams = getValueSpec(d); foundParams == nil {
			continue
		}
		paramConsts = append(paramConsts, foundParams...)
	}

	if err = tpl.Execute(buf, paramConsts); err != nil {
		log.Panicln(err)
	}

	if err = os.WriteFile(outPath, buf.Bytes(), 0644); err != nil {
		log.Panicln(err)
	}
	fmt.Printf("++ Generated %s ++\n", outPath)
}