package models

// Namespace holds informations about a namespace
type Namespace struct {
	ID          int64  `xorm:"int(11) autoincr not null unique pk" json:"id" param:"namespace"`
	Name        string `xorm:"varchar(250)" json:"name"`
	Description string `xorm:"varchar(1000)" json:"description"`
	OwnerID     int64  `xorm:"int(11) not null" json:"-"`

	Owner User `xorm:"-" json:"owner"`

	Created int64 `xorm:"created" json:"created"`
	Updated int64 `xorm:"updated" json:"updated"`

	CRUDable `xorm:"-" json:"-"`
	Rights   `xorm:"-" json:"-"`
}

// TableName makes beautiful table names
func (Namespace) TableName() string {
	return "namespaces"
}

// AfterLoad gets the owner
func (n *Namespace) AfterLoad() {
	n.Owner, _ = GetUserByID(n.OwnerID)
}

// GetNamespaceByID returns a namespace object by its ID
func GetNamespaceByID(id int64) (namespace Namespace, err error) {
	if id < 1 {
		return namespace, ErrNamespaceDoesNotExist{ID: id}
	}

	namespace.ID = id
	exists, err := x.Get(&namespace)
	if err != nil {
		return namespace, err
	}

	if !exists {
		return namespace, ErrNamespaceDoesNotExist{ID: id}
	}

	// Get the namespace Owner
	namespace.Owner, err = GetUserByID(namespace.OwnerID)
	if err != nil {
		return namespace, err
	}

	return namespace, err
}

// ReadOne gets one namespace
func (n *Namespace) ReadOne() (err error) {
	getN := Namespace{}
	exists, err := x.ID(n.ID).Get(&getN)
	if err != nil {
		return
	}

	if !exists {
		return ErrNamespaceDoesNotExist{ID: n.ID}
	}

	*n = getN

	return
}

// ReadAll gets all namespaces a user has access to
func (n *Namespace) ReadAll(doer *User) (interface{}, error) {

	type namespaceWithLists struct {
		Namespace `xorm:"extends"`
		Lists     []*List `xorm:"-" json:"lists"`
	}

	all := []*namespaceWithLists{}

	err := x.Select("namespaces.*").
		Table("namespaces").
		Join("LEFT", "team_namespaces", "namespaces.id = team_namespaces.namespace_id").
		Join("LEFT", "team_members", "team_members.team_id = team_namespaces.team_id").
		Join("LEFT", "users_namespace", "users_namespace.namespace_id = namespaces.id").
		Where("team_members.user_id = ?", doer.ID).
		Or("namespaces.owner_id = ?", doer.ID).
		Or("users_namespace.user_id = ?", doer.ID).
		GroupBy("namespaces.id").
		Find(&all)

	if err != nil {
		return all, err
	}

	// Get all users
	users := []*User{}
	err = x.Select("users.*").
		Table("namespaces").
		Join("LEFT", "team_namespaces", "namespaces.id = team_namespaces.namespace_id").
		Join("LEFT", "team_members", "team_members.team_id = team_namespaces.team_id").
		Join("INNER", "users", "users.id = namespaces.owner_id").
		Where("team_members.user_id = ?", doer.ID).
		Or("namespaces.owner_id = ?", doer.ID).
		GroupBy("users.id").
		Find(&users)

	if err != nil {
		return all, err
	}

	// Make a list of namespace ids
	var namespaceids []int64
	for _, nsp := range all {
		namespaceids = append(namespaceids, nsp.ID)
	}

	// Get all lists
	lists := []*List{}
	err = x.Table(&lists).
		In("namespace_id", namespaceids).
		Find(&lists)
	if err != nil {
		return all, err
	}

	// Put objects in our namespace list
	for i, n := range all {

		// Users
		for _, u := range users {
			if n.OwnerID == u.ID {
				all[i].Owner = *u
				break
			}
		}

		// List infos
		for _, l := range lists {
			if n.ID == l.NamespaceID {
				all[i].Lists = append(all[i].Lists, l)
			}
		}
	}

	return all, nil
}