1 package de.japrost.jabudget.service;
2
3 import java.util.ArrayList;
4 import java.util.List;
5 import java.util.Optional;
6
7 import de.japrost.jabudget.domain.DomainException;
8 import de.japrost.jabudget.domain.DomainFailure;
9 import de.japrost.jabudget.domain.account.Account;
10 import de.japrost.jabudget.domain.account.Entry;
11 import de.japrost.jabudget.repository.AccountRepository;
12
13 /**
14 * Business service for {@link Account}s.
15 */
16 public class AccountService {
17
18 private final AccountRepository accountRepository;
19
20 /**
21 * Initialize with all dependencies.
22 *
23 * @param accountRepository the {@link AccountRepository} to use.
24 */
25 public AccountService(final AccountRepository accountRepository) {
26 this.accountRepository = accountRepository;
27 }
28
29 /**
30 * Create a new {@link Account}.
31 *
32 * @param account the Account to be created
33 * @return the new Account.
34 * @throws DomainException when the Account already exists.
35 */
36 public Account create(final Account account) throws DomainException {
37 // TODO the service creates the ID. Do not use create to import an existing account (e.g. created in an offline application).
38 return accountRepository.create(account);
39 }
40
41 /**
42 * Update an existing {@link Account}.
43 *
44 * @param account the Account to be updated
45 * @return the updated Account.
46 * @throws DomainException when the Account does not exist.
47 */
48 public Account update(final Account account) throws DomainException {
49 return accountRepository.update(account);
50 }
51
52 /**
53 * Retrieve all accounts.
54 *
55 * @return all available accounts.
56 */
57 public List<Account> retrieveAll() {
58 return new ArrayList<>(accountRepository.findAll());
59 }
60
61 /**
62 * Retrieve a single {@link Account} by its id.
63 *
64 * @param id the id of the {@link Account}.
65 * @return the {@link Account} with the id. An empty {@link Optional} if no {@link Account} is available for the given
66 * id.
67 */
68 public Optional<Account> retrieveById(final String id) {
69 return accountRepository.findById(id);
70 }
71
72 /**
73 * Delete a single {@link Account} by its id.
74 *
75 * @param id of the {@link Account} to delete.
76 * @return {@link Boolean#TRUE} if the account is removed after this operation.
77 */
78 public Boolean erase(final String id) {
79 return accountRepository.delete(id);
80 }
81
82 /**
83 * Create a new {@link Entry} with the given values.
84 *
85 * @param entry the entry to create.
86 * @return The entry as stored in the repository.
87 * @throws DomainException with {@link DomainFailure#DUPLICATE_ENTITY} if the given entry already exists.
88 * @throws DomainException with {@link DomainFailure#MISSING_ENTITY_REFERENCE} if the account for the entry does not exists.
89 */
90 public Entry create(final Entry entry) throws DomainException {
91 // TODO who creates the Entry-Code.
92 return accountRepository.create(entry);
93 }
94
95 }