// FindUsers contructs and executes a cypher query with the provided parametrs
// and return all User nodes that satisfy the props conditions.
func FindUsers(props map[string]interface{}) ([]*User, error) {
db := vantaadb.Connect()
res := []User{}
// generate condition string to be used in the cypher statement
condstr := vantaadb.PropString("u", props)
cq := neoism.CypherQuery{
Statement: `MATCH (u:User)
WHERE ` + condstr + `
RETURN id(u), u.name, u.email, u.password_digest`,
Parameters: props,
Result: &res,
}
err := db.Cypher(&cq)
if err != nil {
return []*User{}, nil
}
users := []*User{}
for _, u := range res {
users = append(users, &u)
}
if len(users) < 1 {
return nil, errors.New("not found")
}
return users, nil
}
// DeleteUser removes a User node from the database.
// error is return even when user is not found
func DeleteUser(props neoism.Props) error {
// return error if user is not found in the database
if u, _ := FindUser(props); u == nil {
return errors.New("user not found")
}
db := vantaadb.Connect()
cq := neoism.CypherQuery{
Statement: `MATCH (u:User)
OPTIONAL MATCH (s:Session)-[r]->(u)
WHERE ` + vantaadb.PropString("u", props) + `DELETE u, s, r`,
Parameters: props,
}
if err := db.Cypher(&cq); err != nil {
return err
}
return nil
}