package graph

import (
	"encoding/json"
	"sync"

	"git.wecise.com/wecise/cgimport/schema"
	"git.wecise.com/wecise/util/deepcopy"
	"git.wecise.com/wecise/util/merrs"
	"github.com/spf13/cast"
)

type EdgeInfo struct {
	FromOid    string
	EdgeType   string
	ToOid      string
	Attributes map[string]string
}

var edgeinfosmutex sync.RWMutex
var edgeinfos = map[string]map[string]map[string][]string{} // fromid - edgetype - toid - relationinfo

func CacheEdgeInfo(data map[string]any) (err error) {
	ei, e := ParseEdgeInfo(data)
	if e != nil {
		return e
	}
	edgeinfosmutex.Lock()
	defer edgeinfosmutex.Unlock()
	eitypes := edgeinfos[ei.FromOid]
	if eitypes == nil {
		eitypes = map[string]map[string][]string{}
	} else {
		eitypes = deepcopy.DeepCopy(eitypes).(map[string]map[string][]string)
	}
	edgeinfos[ei.FromOid] = eitypes
	eis := eitypes[ei.EdgeType]
	if eis == nil {
		eis = map[string][]string{}
		eitypes[ei.EdgeType] = eis
	}
	eis["_all"] = append(eis["_all"], ei.ToOid)
	eabs, _ := json.Marshal(ei.Attributes)
	eis[ei.ToOid] = append(eis[ei.ToOid], string(eabs))
	return
}

func GetEdgeInfo(fromoid string) map[string]map[string][]string {
	edgeinfosmutex.RLock()
	defer edgeinfosmutex.RUnlock()
	return edgeinfos[fromoid]
}

func ParseEdgeInfo(data map[string]any) (ei *EdgeInfo, err error) {
	extraattr := map[string]string{}
	fromuid := ""
	touid := ""
	edgetype := ""
	for k, v := range data {
		switch k {
		case "FROMUNIQUEID":
			fromuid = cast.ToString(v)
		case "TOUNIQUEID":
			touid = cast.ToString(v)
		case "EDGETYPE":
			edgetype = cast.ToString(v)
		default:
			extraattr[k] = cast.ToString(v)
		}
	}
	if fromuid == "" {
		databs, _ := json.MarshalIndent(data, "", "  ")
		return nil, merrs.NewError("not found valid fromuniqueid in data ", merrs.SSMap{"data": string(databs)})
	}
	if touid == "" {
		databs, _ := json.MarshalIndent(data, "", "  ")
		return nil, merrs.NewError("not found valid touniqueid in data ", merrs.SSMap{"data": string(databs)})
	}
	if edgetype == "" {
		databs, _ := json.MarshalIndent(data, "", "  ")
		return nil, merrs.NewError("not found valid edgetype in data ", merrs.SSMap{"data": string(databs)})
	}
	edgetype = schema.Relations[edgetype]
	if edgetype == "" {
		databs, _ := json.MarshalIndent(data, "", "  ")
		return nil, merrs.NewError("not found valid edgetype in data ", merrs.SSMap{"data": string(databs)})
	}
	foid := ToNodeId("level1", fromuid)
	toid := ToNodeId("level1", touid)
	return &EdgeInfo{
		FromOid:    foid,
		ToOid:      toid,
		EdgeType:   edgetype,
		Attributes: extraattr,
	}, nil
}