package grconfig

import (
	"bytes"
	"errors"
	"gopkg.in/yaml.v2"
	"log"
	"strings"
)

type ConfigerChannelYAML struct {
	tmp      interface{}
	filename string
	adapter  string
}

func (conf *ConfigerChannelYAML) String(item string) string {
	chunks := strings.SplitN(item, ".", 2)
	var target interface{}
	if len(chunks) > 1 {
		target = recursiveParse(chunks[1], conf.tmp)
	} else {
		target = conf.tmp
	}

	if str, ok := target.(string); ok {
		return str
	} else {
		if out, err := yaml.Marshal(target); err == nil {
			return bytes.NewBuffer(out).String()
		}
	}

	return ""
}

func (conf *ConfigerChannelYAML) Item(item string, t interface{}) (err error) {
	chunks := strings.SplitN(item, ".", 2)

	if len(chunks) == 1 {
		chunks = append(chunks, "")
	}

	target := recursiveParse(chunks[1], conf.tmp)
	if target == nil {
		err = errors.New("item doesn't exists")
		return
	}
	out, _ := yaml.Marshal(target)
	err = yaml.Unmarshal(out, t)
	return
}

func parseYAML(buf bytes.Buffer) interface{} {
	var v interface{}
	if err := yaml.Unmarshal(buf.Bytes(), &v); err != nil {
		log.Println(err)
		panic(err)
	}
	return v
}