package parser

import (
	"io/ioutil"

	"github.com/crowdsecurity/crowdsec/pkg/types"
	"github.com/logrusorgru/grokky"
	"github.com/prometheus/common/log"
)

type UnixParser struct {
}

type UnixParserCtx struct {
	Grok      grokky.Host
	Stages    []string
	Profiling bool
}

func (u UnixParser) IsParsable(ctx interface{}, l types.Line) (bool, error) {
	return true, nil
}

func (u UnixParser) Init(c map[string]interface{}) (*UnixParserCtx, error) {
	r := UnixParserCtx{}
	r.Grok = grokky.NewBase()
	files, err := ioutil.ReadDir(c["patterns"].(string))
	if err != nil {
		return nil, err
	}
	for _, f := range files {
		log.Debugf("Loading %s", f.Name())
		if err := r.Grok.AddFromFile(c["patterns"].(string) + f.Name()); err != nil {
			log.Errorf("failed to load pattern %s : %v", f.Name(), err)
			return nil, err
		}
	}
	return &r, nil
}