package xvdoc

import (
	"encoding/json"
	"fmt"
)

type Style struct {
	JSONMap
}

func (s *Style) UnmarshalJSON(src []byte) (err error) {
	//fmt.Println("!!!!!!!UMJ")
	var m JSONMap
	if err = json.Unmarshal(src, &m); err == nil {
		s.JSONMap = m
		//fmt.Println(s.JSONMap)
	}
	return
}

func (s *Style) mergeStyle(m map[string]Style, rStyle JSONMap, parentName string, level int) (res JSONMap, err error) {
	if parent, check := m[parentName]; check {
		var pm JSONMap
		if pm, err = parent.Result(m, parentName, level+1); err == nil {
			res = mergeMaps(pm.Map(), rStyle.Map())
		}
	} else {
		res = rStyle.Copy()
	}
	return
}

func (s *Style) Result(m map[string]Style, childName string, cLevel ...int) (res JSONMap, err error) {
	//fmt.Println(">>>>>>>>>>>>>>>>>>>>", s, childName, s.JSONMap)
	level := 0
	if len(cLevel) > 0 {
		level = cLevel[0]
	}
	if level >= 100 {
		return nil, fmt.Errorf("Style loop arrived... (%v)", childName)
	}
	res = s.Copy()
	if s.KeyExists("parent") {
		if res, err = s.mergeStyle(m, res, s.StringVal("parent", ""), level); err != nil {
			return
		}
	}
	if s.KeyExists("parents") {
		for _, pName := range s.StringArray("parents") {
			if res, err = s.mergeStyle(m, res, pName, level); err != nil {
				return
			}
		}
	}
	delete(res, "parent")
	delete(res, "parents")
	return
}