package grpcapi

import (
	"encoding/json"
	"fmt"

	"git.coopgo.io/coopgo-platform/agenda/storage"
	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/types/known/structpb"
	"google.golang.org/protobuf/types/known/timestamppb"
)

func (e Event) ToStorageType() storage.Event {
	event := storage.Event{
		ID:             e.Id,
		Namespace:      e.Namespace,
		Owners:         e.Owners,
		RestrictedTo:   e.RestrictedTo,
		Type:           e.Type,
		Name:           e.Name,
		Description:    e.Description,
		Startdate:      e.Startdate.AsTime(),
		Enddate:        e.Enddate.AsTime(),
		Starttime:      e.Starttime,
		Endtime:        e.Endtime,
		Allday:         e.Allday,
		MaxSubscribers: e.MaxSubscribers,
		Subscriptions:  []storage.Subscription{},
		Data:           map[string]any{},
	}

	for _, v := range e.Subscriptions {
		event.Subscriptions = append(event.Subscriptions, v.ToStorageType())
	}

	for k, d := range e.Data.GetFields() {
		jsondata, err := protojson.Marshal(d)
		if err != nil {
			fmt.Println(err)
			break
		}
		var data any
		json.Unmarshal(jsondata, &data)
		event.Data[k] = data
	}

	return event
}

func (s Subscription) ToStorageType() storage.Subscription {
	subscription := storage.Subscription{
		Subscriber: s.Subscriber,
		Tags:       s.Tags,
		Data:       s.Data.AsMap(),
		CreatedAt:  s.CreatedAt.AsTime(),
	}

	return subscription
}

func EventFromStorageType(event *storage.Event) (*Event, error) {

	d, err := sanitizeData(event.Data)
	if err != nil {
		return nil, err
	}

	data, err := structpb.NewStruct(d)
	if err != nil {
		fmt.Println(err)
		return nil, err
	}

	subscriptions := []*Subscription{}

	for _, v := range event.Subscriptions {
		sub, _ := SubscriptionFromStorageType(v)
		subscriptions = append(subscriptions, sub)
	}

	return &Event{
		Id:             event.ID,
		Namespace:      event.Namespace,
		Type:           event.Type,
		Owners:         event.Owners,
		RestrictedTo:   event.RestrictedTo,
		Name:           event.Name,
		Description:    event.Description,
		Startdate:      timestamppb.New(event.Startdate),
		Enddate:        timestamppb.New(event.Enddate),
		Starttime:      event.Starttime,
		Endtime:        event.Endtime,
		Allday:         event.Allday,
		MaxSubscribers: event.MaxSubscribers,
		Subscriptions:  subscriptions,
		Data:           data,
	}, nil
}

func SubscriptionFromStorageType(s storage.Subscription) (*Subscription, error) {

	d, err := sanitizeData(s.Data)
	if err != nil {
		return nil, err
	}

	data, err := structpb.NewStruct(d)

	if err != nil {
		fmt.Println(err)
		return nil, err
	}
	subscription := Subscription{
		Subscriber: s.Subscriber,
		Tags:       s.Tags,
		Data:       data,
		CreatedAt:  timestamppb.New(s.CreatedAt),
	}

	return &subscription, nil
}

func sanitizeData(data map[string]any) (d map[string]any, err error) {
	j, err := json.Marshal(data)
	if err != nil {
		return nil, err
	}

	if err = json.Unmarshal(j, &d); err != nil {
		return nil, err
	}

	return d, nil
}