package handlers

import (
	"errors"

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

func (h GroupsManagementHandler) AddGroup(group storage.Group) (*storage.Group, error) {
	if group.ID == "" {
		group.ID = uuid.NewString()
	}

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

	return &group, nil
}

func (h GroupsManagementHandler) GetGroup(id string) (group *storage.Group, err error) {
	group, err = h.storage.GetGroup(id)
	return
}

func (h GroupsManagementHandler) GetGroups(namespaces []string, member string) (groups []storage.Group, err error) {
	groups = []storage.Group{}
	g, err := h.storage.GetGroups(namespaces)
	if err != nil {
		return
	}
	if member == "" {
		return g, nil
	}
	for _, group := range g {
		for _, m := range group.Members {
			if m == member {
				groups = append(groups, group)
				break
			}
		}
	}
	return
}

func (h GroupsManagementHandler) GetGroupsBatch(groupids []string) (groups []storage.Group, err error) {
	groups, err = h.storage.GetGroupsByIds(groupids)
	return
}

func (h GroupsManagementHandler) Subscribe(groupid string, subscriber string) error {
	group, err := h.storage.GetGroup(groupid)
	if err != nil {
		return err
	}
	for _, m := range group.Members {
		if m == subscriber {
			return errors.New("already subscribed")
		}
	}
	group.Members = append(group.Members, subscriber)
	h.storage.UpdateGroup(*group)
	return nil
}

func (h GroupsManagementHandler) Unsubscribe(groupid string, subscriber string) error {
	group, err := h.storage.GetGroup(groupid)
	if err != nil {
		return err
	}
	members := []string{}
	for _, m := range group.Members {
		if m != subscriber {
			members = append(members, m)
		}
	}
	group.Members = members
	h.storage.UpdateGroup(*group)
	return nil
}