package handlers

import (
	"errors"
	"time"

	"git.coopgo.io/coopgo-platform/agenda/storage"
	"github.com/google/uuid"
)

func (h AgendaHandler) CreateEvent(event storage.Event) (*storage.Event, error) {
	if event.ID == "" {
		event.ID = uuid.NewString()
	}

	if event.Subscriptions == nil {
		event.Subscriptions = []storage.Subscription{}
	}

	if err := h.storage.CreateEvent(event); err != nil {
		return nil, err
	}

	return &event, nil
}

func (h AgendaHandler) GetEvent(id string) (event *storage.Event, err error) {
	event, err = h.storage.GetEvent(id)
	return
}

func (h AgendaHandler) GetEvents(namespaces []string, mindate *time.Time, maxdate *time.Time) (results []storage.Event, err error) {
	results = []storage.Event{}
	events, err := h.storage.GetEvents(namespaces)
	if err == nil {
		for _, event := range events {
			if mindate != nil {
				if event.Enddate.Add(24 * time.Hour).Before(*mindate) {
					continue
				}
			}
			if maxdate != nil {
				if event.Enddate.Add(24 * time.Hour).After(*mindate) {
					continue
				}
			}
			results = append(results, event)
		}
	}
	return
}

func (h AgendaHandler) SubscribeEvent(eventid string, subscriber string, data map[string]any) (err error) {
	if eventid == "" || subscriber == "" {
		return errors.New("missing eventid or subscriber")
	}
	now := time.Now()
	id := uuid.NewString()
	subscription := storage.Subscription{
		ID:         id,
		Subscriber: subscriber,
		Tags:       []string{},
		CreatedAt:  now,
		Data:       map[string]any{},
	}
	// Initiate data map
	for k, v := range data {
		subscription.Data[k] = v
	}
	err = h.storage.AddSubscription(eventid, subscription)
	return
}

func (h AgendaHandler) DeleteSubscription(eventid string, subscriber string, data map[string]any) (err error) {
	if eventid == "" || subscriber == "" {
		return errors.New("missing eventid or subscriber")
	}
	now := time.Now()
	id := uuid.NewString()
	deletesubscription := storage.Subscription{
		ID:         id,
		Subscriber: subscriber,
		Tags:       []string{},
		CreatedAt:  now,
		Data:       map[string]any{},
	}
	// Initiate data map
	for k, v := range data {
		deletesubscription.Data[k] = v
	}
	err = h.storage.UpdateSubscription(eventid, subscriber, deletesubscription)
	return
}
func (h AgendaHandler) UpdateEvent(event storage.Event) (*storage.Event, error) {

	// Store the account
	if err := h.storage.UpdateEvent(event); err != nil {
		return nil, err
	}

	return &event, nil
}

func (h AgendaHandler) GetSubscriptionByUser(subscriber string) (results []storage.Subscription, err error) {
	if subscriber == "" {
		return nil, errors.New("missing subscriber")
	}
	results, err = h.storage.GetSubscriptionByUser(subscriber)
	if err != nil {
		return nil, err
	}
	return results, nil
}