Add file uploading to transaction creation

financer-common/src/main/java/de/financer/ResponseReason.java

@@ -38,7 +38,11 @@ public enum ResponseReason {
     LIMIT_NOT_NUMERIC(HttpStatus.BAD_REQUEST),
     INVALID_TAX_RELEVANT_VALUE(HttpStatus.BAD_REQUEST),
     INVALID_ACCOUNTS_AND_VALUE(HttpStatus.BAD_REQUEST),
-    FQL_MALFORMED(HttpStatus.BAD_REQUEST);
+    FQL_MALFORMED(HttpStatus.BAD_REQUEST),
+    INVALID_FILE_CONTENT(HttpStatus.BAD_REQUEST),
+    INVALID_FILE_NAME(HttpStatus.BAD_REQUEST),
+    INVALID_HAS_FILE_VALUE(HttpStatus.BAD_REQUEST),
+    FILE_NOT_FOUND(HttpStatus.BAD_REQUEST);
 
     private final HttpStatus httpStatus;
 

financer-common/src/main/java/de/financer/dto/SaveTransactionRequestDto.java

@@ -9,6 +9,8 @@ public class SaveTransactionRequestDto {
     private String date;
     private String description;
     private Boolean taxRelevant;
+    private String fileContent;
+    private String fileName;
 
     public String getFromAccountKey() {
         return fromAccountKey;
@@ -62,4 +64,20 @@ public class SaveTransactionRequestDto {
     public String toString() {
         return ReflectionToStringBuilder.toString(this);
     }
+
+    public String getFileContent() {
+        return fileContent;
+    }
+
+    public void setFileContent(String fileContent) {
+        this.fileContent = fileContent;
+    }
+
+    public String getFileName() {
+        return fileName;
+    }
+
+    public void setFileName(String fileName) {
+        this.fileName = fileName;
+    }
 }

financer-common/src/main/java/de/financer/dto/SearchTransactionsRequestDto.java

@@ -9,6 +9,7 @@ public class SearchTransactionsRequestDto {
     private String limit;
     private String order;
     private String taxRelevant;
+    private String hasFile;
 
     public String getFromAccountKey() {
         return fromAccountKey;
@@ -62,4 +63,12 @@ public class SearchTransactionsRequestDto {
     public String toString() {
         return ReflectionToStringBuilder.toString(this);
     }
+
+    public String getHasFile() {
+        return hasFile;
+    }
+
+    public void setHasFile(String hasFile) {
+        this.hasFile = hasFile;
+    }
 }

financer-common/src/main/java/de/financer/dto/SearchTransactionsResponseDto.java

@@ -13,6 +13,7 @@ public class SearchTransactionsResponseDto {
     private long amount;
     private boolean taxRelevant;
     private boolean recurring;
+    private Long fileId;
 
     public SearchTransactionsResponseDto() {
         // No-arg constructor for Jackson
@@ -25,7 +26,8 @@ public class SearchTransactionsResponseDto {
                                          String description,
                                          long amount,
                                          boolean taxRelevant,
-                                         boolean recurring) {
+                                         boolean recurring,
+                                         Long fileId) {
         this.id = id;
         this.fromAccount = fromAccount;
         this.toAccount = toAccount;
@@ -34,6 +36,7 @@ public class SearchTransactionsResponseDto {
         this.amount = amount;
         this.taxRelevant = taxRelevant;
         this.recurring = recurring;
+        this.fileId = fileId;
     }
 
     public Long getId() {
@@ -99,4 +102,12 @@ public class SearchTransactionsResponseDto {
     public void setRecurring(boolean recurring) {
         this.recurring = recurring;
     }
+
+    public Long getFileId() {
+        return fileId;
+    }
+
+    public void setFileId(Long fileId) {
+        this.fileId = fileId;
+    }
 }

financer-common/src/main/java/de/financer/model/File.java

@@ -0,0 +1,33 @@
+package de.financer.model;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "file")
+public class File {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String name;
+    private String content;
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+}

financer-common/src/main/java/de/financer/model/Transaction.java

@@ -28,6 +28,13 @@ public class Transaction {
     //@formatter:on
     private Set<Period> periods;
     private boolean taxRelevant;
+    @OneToMany(cascade = {CascadeType.PERSIST, CascadeType.REMOVE}, fetch = FetchType.EAGER)
+    //@formatter:off
+    @JoinTable(name = "link_transaction_file",
+               joinColumns = @JoinColumn(name = "transaction_id"),
+               inverseJoinColumns = @JoinColumn(name = "file_id"))
+    //@formatter:on
+    private Set<File> files;
 
     public Long getId() {
         return id;
@@ -96,4 +103,12 @@ public class Transaction {
     public void setTaxRelevant(boolean taxRelevant) {
         this.taxRelevant = taxRelevant;
     }
+
+    public Set<File> getFiles() {
+        return files;
+    }
+
+    public void setFiles(Set<File> files) {
+        this.files = files;
+    }
 }

financer-server/src/main/java/de/financer/controller/FileController.java

@@ -0,0 +1,33 @@
+package de.financer.controller;
+
+import de.financer.model.File;
+import de.financer.service.FileService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RestController
+public class FileController {
+    private static final Logger LOGGER = LoggerFactory.getLogger(TransactionController.class);
+
+    @Autowired
+    private FileService fileService;
+
+    @GetMapping("/file")
+    public File getFile(Long fileId) {
+        if (LOGGER.isDebugEnabled()) {
+            LOGGER.debug(String.format("GET /file got parameter: %s", fileId));
+        }
+
+        final File file = this.fileService.getFile(fileId);
+
+        if (LOGGER.isDebugEnabled()) {
+            LOGGER.debug(String.format("GET /file returns with %s", file.getName()));
+        }
+
+        return file;
+    }
+}

financer-server/src/main/java/de/financer/controller/TransactionController.java

@@ -46,13 +46,14 @@ public class TransactionController {
                                                                       String limit,
                                                                       String order,
                                                                       String taxRelevant,
-                                                                      String accountsAnd) {
+                                                                      String accountsAnd,
+                                                                      String hasFile) {
         final String fromDecoded = ControllerUtil.urlDecode(fromAccountKey);
         final String toDecoded = ControllerUtil.urlDecode(toAccountKey);
 
         if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug(String.format("GET /transactions/ got parameter: %s, %s, %s, %s, %s, %s - with order %s",
+            LOGGER.debug(String.format("GET /transactions/ got parameter: %s, %s, %s, %s, %s, %s, %s - with order %s",
-                    fromDecoded, toDecoded, periodId, limit, taxRelevant, accountsAnd, order));
+                    fromDecoded, toDecoded, periodId, limit, taxRelevant, accountsAnd, hasFile, order));
         }
 
         // Wrap the url parameters into a proper POJO so the service parameter list wont get polluted
@@ -66,6 +67,7 @@ public class TransactionController {
         parameter.setOrder(order);
         parameter.setTaxRelevant(taxRelevant);
         parameter.setAccountsAnd(accountsAnd);
+        parameter.setHasFile(hasFile);
 
         final Iterable<SearchTransactionsResponseDto> transactionSearchResponse =
                 this.transactionService.searchTransactions(parameter);
@@ -92,7 +94,9 @@ public class TransactionController {
                                                                                Long.valueOf(requestDto.getAmount()),
                                                                                requestDto.getDate(),
                                                                                requestDto.getDescription(),
-                                                                               requestDto.getTaxRelevant());
+                                                                               requestDto.getTaxRelevant(),
+                                                                               requestDto.getFileName(),
+                                                                               requestDto.getFileContent());
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(String.format("POST /transactions returns with %s", responseReason.name()));

financer-server/src/main/java/de/financer/dba/FileRepository.java

@@ -0,0 +1,7 @@
+package de.financer.dba;
+
+import de.financer.model.File;
+import org.springframework.data.repository.CrudRepository;
+
+public interface FileRepository extends CrudRepository<File, Long> {
+}

financer-server/src/main/java/de/financer/dba/TransactionRepositoryCustom.java

@@ -12,7 +12,8 @@ public interface TransactionRepositoryCustom {
                                                                Integer limit,
                                                                Order order,
                                                                Boolean taxRelevant,
-                                                               boolean accountsAnd);
+                                                               boolean accountsAnd,
+                                                               Boolean hasFile);
 
     Iterable<SearchTransactionsResponseDto> searchTransactions(String fql);
 }

financer-server/src/main/java/de/financer/dba/impl/TransactionRepositoryCustomImpl.java

@@ -30,11 +30,13 @@ public class TransactionRepositoryCustomImpl implements TransactionRepositoryCus
                                                                       Integer limit,
                                                                       Order order,
                                                                       Boolean taxRelevant,
-                                                                      boolean accountsAnd) {
+                                                                      boolean accountsAnd,
+                                                                      Boolean hasFile) {
         final CriteriaBuilder criteriaBuilder = this.entityManager.getCriteriaBuilder();
         final CriteriaQuery<SearchTransactionsResponseDto> criteriaQuery = criteriaBuilder
                 .createQuery(SearchTransactionsResponseDto.class);
         final Root<Transaction> fromTransaction = criteriaQuery.from(Transaction.class);
+        final SetJoin<Transaction, File> fileJoin = fromTransaction.join(Transaction_.files, JoinType.LEFT);
 
         final List<Predicate> predicates = new ArrayList<>();
         Predicate fromAccountPredicate = null;
@@ -74,6 +76,15 @@ public class TransactionRepositoryCustomImpl implements TransactionRepositoryCus
         }
         // else: both null, nothing to do
 
+        if (hasFile != null) {
+            if (hasFile) {
+                predicates.add(criteriaBuilder.isNotNull(fileJoin.get(File_.id)));
+            }
+            else {
+                predicates.add(criteriaBuilder.isNull(fileJoin.get(File_.id)));
+            }
+        }
+
         criteriaQuery.where(predicates.toArray(new Predicate[]{}));
 
         switch(order) {
@@ -92,7 +103,9 @@ public class TransactionRepositoryCustomImpl implements TransactionRepositoryCus
                 fromTransaction.get(Transaction_.description),
                 fromTransaction.get(Transaction_.amount),
                 fromTransaction.get(Transaction_.taxRelevant),
-                criteriaBuilder.isNotNull(fromTransaction.get(Transaction_.recurringTransaction))));
+                criteriaBuilder.isNotNull(fromTransaction.get(Transaction_.recurringTransaction)),
+                // This is kinda hacky as the relation between transaction and file is one-to-many
+                fileJoin.get(File_.id)));
 
         final TypedQuery<SearchTransactionsResponseDto> query = this.entityManager.createQuery(criteriaQuery);
 

financer-server/src/main/java/de/financer/fql/FQLVisitorImpl.java

@@ -27,6 +27,9 @@ public class FQLVisitorImpl extends FQLBaseVisitor<Predicate> {
 
         this.froms = new HashMap<>();
         this.froms.put(JoinKey.of(Transaction.class), this.criteriaRoot);
+
+        // We always need to join the join for HAS_FILE because it required for the select clause
+        FieldMapping.HAS_FILE.getJoinHandler().apply(this.froms, FieldMapping.HAS_FILE);
     }
 
     public CriteriaQuery<SearchTransactionsResponseDto> getCriteriaQuery() {
@@ -58,7 +61,8 @@ public class FQLVisitorImpl extends FQLBaseVisitor<Predicate> {
                 this.criteriaRoot.get(Transaction_.description),
                 this.criteriaRoot.get(Transaction_.amount),
                 this.criteriaRoot.get(Transaction_.taxRelevant),
-                criteriaBuilder.isNotNull(this.criteriaRoot.get(Transaction_.recurringTransaction))));
+                this.criteriaBuilder.isNotNull(this.criteriaRoot.get(Transaction_.recurringTransaction)),
+                this.froms.get(FieldMapping.HAS_FILE.getJoinKey()).get(FieldMapping.HAS_FILE.getAttributeName())));
     }
 
     @Override

financer-server/src/main/java/de/financer/fql/FieldMapping.java

@@ -30,7 +30,9 @@ public enum FieldMapping {
             JoinKey.of(Transaction.class), null, NotNullSyntheticHandler.class),
 
     TAX_RELEVANT("taxRelevant", Transaction_.TAX_RELEVANT, Transaction.class, NoopJoinHandler.class,
-            JoinKey.of(Transaction.class), null, BooleanHandler.class);
+            JoinKey.of(Transaction.class), null, BooleanHandler.class),
+
+    HAS_FILE("hasFile", File_.ID, File.class, FileJoinHandler.class, JoinKey.of(File.class), null, NotNullSyntheticHandler.class);
 
     /**
      * The name of the field as used in FQL

financer-server/src/main/java/de/financer/fql/join_handler/FileJoinHandler.java

@@ -0,0 +1,28 @@
+package de.financer.fql.join_handler;
+
+import de.financer.fql.FieldMapping;
+import de.financer.model.File;
+import de.financer.model.Transaction;
+import de.financer.model.Transaction_;
+
+import javax.persistence.criteria.From;
+import javax.persistence.criteria.JoinType;
+import javax.persistence.criteria.Root;
+import javax.persistence.criteria.SetJoin;
+import java.util.Map;
+
+public class FileJoinHandler implements JoinHandler {
+
+    @Override
+    public Void apply(Map<JoinKey, From<?, ?>> joinKeyFromMap, FieldMapping fieldMapping) {
+        if (joinKeyFromMap.get(fieldMapping.getJoinKey()) == null) {
+            final SetJoin<Transaction, File> periodJoin = ((Root<Transaction>) joinKeyFromMap
+                    .get(JoinKey.of(Transaction.class)))
+                    .join(Transaction_.files, JoinType.LEFT);
+
+            joinKeyFromMap.put(fieldMapping.getJoinKey(), periodJoin);
+        }
+
+        return null;
+    }
+}

financer-server/src/main/java/de/financer/service/FileService.java

@@ -0,0 +1,28 @@
+package de.financer.service;
+
+import de.financer.ResponseReason;
+import de.financer.dba.FileRepository;
+import de.financer.model.File;
+import de.financer.service.exception.FinancerServiceException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class FileService {
+    private static final Logger LOGGER = LoggerFactory.getLogger(TransactionService.class);
+
+    @Autowired
+    private FileRepository fileRepository;
+
+    public File getFile(Long fileId) {
+        if (fileId == null || !this.fileRepository.existsById(fileId)) {
+            LOGGER.error(String.format("File with ID %s not found!", fileId));
+
+            throw new FinancerServiceException(ResponseReason.FILE_NOT_FOUND);
+        }
+
+        return this.fileRepository.findById(fileId).get();
+    }
+}

financer-server/src/main/java/de/financer/service/RecurringTransactionService.java

@@ -476,7 +476,9 @@ public class RecurringTransactionService {
                 LocalDate.now().format(DateTimeFormatter.ofPattern(this.financerConfig.getDateFormat())),
                 recurringTransaction.getDescription(),
                 recurringTransaction,
-                recurringTransaction.isTaxRelevant());
+                recurringTransaction.isTaxRelevant(),
+                null,
+                null);
     }
 
     @Transactional(propagation = Propagation.REQUIRED)

financer-server/src/main/java/de/financer/service/TransactionService.java

@@ -55,19 +55,20 @@ public class TransactionService {
 
     @Transactional(propagation = Propagation.REQUIRED)
     public ResponseReason createTransaction(String fromAccountKey, String toAccountKey, Long amount, String date,
-                                            String description, Boolean taxRelevant
+                                            String description, Boolean taxRelevant, String fileName, String fileContent
     ) {
-        return this.createTransaction(fromAccountKey, toAccountKey, amount, date, description, null, taxRelevant);
+        return this.createTransaction(fromAccountKey, toAccountKey, amount, date, description, null,
+                taxRelevant, fileName, fileContent);
     }
 
     @Transactional(propagation = Propagation.REQUIRED)
     public ResponseReason createTransaction(String fromAccountKey, String toAccountKey, Long amount, String date,
                                             String description, RecurringTransaction recurringTransaction,
-                                            Boolean taxRelevant
+                                            Boolean taxRelevant, String fileName, String fileContent
     ) {
         final Account fromAccount = this.accountService.getAccountByKey(fromAccountKey);
         final Account toAccount = this.accountService.getAccountByKey(toAccountKey);
-        ResponseReason response = validateParameters(fromAccount, toAccount, amount, date);
+        ResponseReason response = validateParameters(fromAccount, toAccount, amount, date, fileName, fileContent);
 
         // If we detected an issue with the given parameters return the first error found to the caller
         if (response != null) {
@@ -79,6 +80,7 @@ public class TransactionService {
                     buildTransaction(fromAccount, toAccount, amount, description, date, recurringTransaction, taxRelevant);
 
             transaction.setPeriods(getRelevantPeriods(transaction));
+            transaction.setFiles(Collections.singleton(buildFile(fileName, fileContent)));
 
             fromAccount.setCurrentBalance(fromAccount.getCurrentBalance() + (this.ruleService
                     .getMultiplierFromAccount(fromAccount) * amount));
@@ -110,6 +112,15 @@ public class TransactionService {
         return response;
     }
 
+    private File buildFile(String fileName, String fileContent) {
+        final File file = new File();
+
+        file.setName(fileName);
+        file.setContent(fileContent);
+
+        return file;
+    }
+
     private Set<Period> getRelevantPeriods(Transaction transaction) {
         final Set<Period> periods = new HashSet<>();
         final Period expensePeriod = this.periodService.getExpensePeriodForTransaction(transaction);
@@ -158,10 +169,13 @@ public class TransactionService {
      * @param toAccount the to account
      * @param amount the transaction amount
      * @param date the transaction date
+     * @param fileName the name of the file
+     * @param fileContent the BASE64 encoded content of the file
      *
      * @return the first error found or <code>null</code> if all parameters are valid
      */
-    private ResponseReason validateParameters(Account fromAccount, Account toAccount, Long amount, String date) {
+    private ResponseReason validateParameters(Account fromAccount, Account toAccount, Long amount, String date,
+                                              String fileName, String fileContent) {
         ResponseReason response = null;
 
         if (fromAccount == null && toAccount == null) {
@@ -184,6 +198,11 @@ public class TransactionService {
             } catch (DateTimeParseException e) {
                 response = ResponseReason.INVALID_DATE_FORMAT;
             }
+        // A file is only considered valid if both name and content are not empty
+        } else if (StringUtils.isNotEmpty(fileName) && StringUtils.isEmpty(fileContent)) {
+            response = ResponseReason.INVALID_FILE_CONTENT;
+        } else if (StringUtils.isEmpty(fileName) && StringUtils.isNotEmpty(fileContent)) {
+            response = ResponseReason.INVALID_FILE_NAME;
         }
 
         return response;
@@ -298,6 +317,7 @@ public class TransactionService {
         Account toAccount = null;
         Boolean taxRelevant = null;
         Boolean accountsAnd = Boolean.FALSE; // account values are OR conjunct by default
+        Boolean hasFile = null;
 
         if (StringUtils.isNotEmpty(parameter.getPeriodId())) {
             if (!NumberUtils.isCreatable(parameter.getPeriodId())) {
@@ -351,8 +371,16 @@ public class TransactionService {
             }
         }
 
+        if(StringUtils.isNotEmpty(parameter.getHasFile())) {
+            hasFile = BooleanUtils.toBooleanObject(parameter.getAccountsAnd());
+
+            if (hasFile == null) {
+                throw new FinancerServiceException(ResponseReason.INVALID_HAS_FILE_VALUE);
+            }
+        }
+
         return this.transactionRepository.searchTransactions(period, fromAccount, toAccount, limit, order, taxRelevant,
-                accountsAnd);
+                accountsAnd, hasFile);
     }
 
     public Iterable<SearchTransactionsResponseDto> searchTransactions(String fql) {

financer-server/src/main/java/de/financer/service/parameter/SearchTransactionsParameter.java

@@ -8,6 +8,7 @@ public class SearchTransactionsParameter {
     private String order;
     private String taxRelevant;
     private String accountsAnd;
+    private String hasFile;
 
     public String getFromAccountKey() {
         return fromAccountKey;
@@ -64,4 +65,12 @@ public class SearchTransactionsParameter {
     public void setAccountsAnd(String accountsAnd) {
         this.accountsAnd = accountsAnd;
     }
+
+    public String getHasFile() {
+        return hasFile;
+    }
+
+    public void setHasFile(String hasFile) {
+        this.hasFile = hasFile;
+    }
 }

financer-server/src/main/resources/database/hsqldb/V28_0_1__file.sql

@@ -0,0 +1,14 @@
+CREATE TABLE file (
+    id BIGINT NOT NULL PRIMARY KEY IDENTITY,
+    name NVARCHAR(1000) NOT NULL,
+    content NVARCHAR(4000) NOT NULL
+);
+
+CREATE TABLE link_transaction_file (
+    id BIGINT NOT NULL PRIMARY KEY IDENTITY,
+    transaction_id BIGINT NOT NULL,
+    file_id BIGINT NOT NULL,
+
+    CONSTRAINT fk_link_transaction_file_transaction FOREIGN KEY (transaction_id) REFERENCES "transaction" (id),
+    CONSTRAINT fk_link_transaction_file_file FOREIGN KEY (file_id) REFERENCES file (id)
+);

financer-server/src/main/resources/database/postgres/V28_0_1__file.sql

@@ -0,0 +1,14 @@
+CREATE TABLE file (
+    id BIGINT NOT NULL PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+    name VARCHAR(1000) NOT NULL,
+    content VARCHAR NOT NULL
+);
+
+CREATE TABLE link_transaction_file (
+    id BIGINT NOT NULL PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+    transaction_id BIGINT NOT NULL,
+    file_id BIGINT NOT NULL,
+
+    CONSTRAINT fk_link_transaction_file_transaction FOREIGN KEY (transaction_id) REFERENCES "transaction" (id),
+    CONSTRAINT fk_link_transaction_file_file FOREIGN KEY (file_id) REFERENCES file (id)
+);

financer-server/src/test/java/de/financer/service/TransactionService_createTransactionTest.java

@@ -48,7 +48,7 @@ public class TransactionService_createTransactionTest {
         // will not be found.
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.invalid", "account.invalid", 150L, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.invalid", "account.invalid", 150L, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.FROM_AND_TO_ACCOUNT_NOT_FOUND, response);
@@ -60,7 +60,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.accountService.getAccountByKey(Mockito.anyString())).thenReturn(createAccount(), null);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.invalid", 150L, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.invalid", 150L, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.TO_ACCOUNT_NOT_FOUND, response);
@@ -72,7 +72,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.accountService.getAccountByKey(Mockito.anyString())).thenReturn(null, createAccount());
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.invalid", "account.to", 150L, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.invalid", "account.to", 150L, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.FROM_ACCOUNT_NOT_FOUND, response);
@@ -85,7 +85,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.ruleService.isValidBooking(Mockito.any(Account.class), Mockito.any(Account.class))).thenReturn(Boolean.FALSE);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 150L, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 150L, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.INVALID_BOOKING_ACCOUNTS, response);
@@ -98,7 +98,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.ruleService.isValidBooking(Mockito.any(Account.class), Mockito.any(Account.class))).thenReturn(Boolean.TRUE);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", null, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", null, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.MISSING_AMOUNT, response);
@@ -111,7 +111,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.ruleService.isValidBooking(Mockito.any(Account.class), Mockito.any(Account.class))).thenReturn(Boolean.TRUE);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 0L, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 0L, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.AMOUNT_ZERO, response);
@@ -124,7 +124,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.ruleService.isValidBooking(Mockito.any(Account.class), Mockito.any(Account.class))).thenReturn(Boolean.TRUE);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 125L, null, "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 125L, null, "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.MISSING_DATE, response);
@@ -137,7 +137,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(this.ruleService.isValidBooking(Mockito.any(Account.class), Mockito.any(Account.class))).thenReturn(Boolean.TRUE);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 125L, "2019-01-01", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 125L, "2019-01-01", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.INVALID_DATE_FORMAT, response);
@@ -156,7 +156,7 @@ public class TransactionService_createTransactionTest {
         Mockito.when(toAccount.getCurrentBalance()).thenReturn(0L);
 
         // Act
-        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 125L, "24.02.2019", "XXX", false);
+        final ResponseReason response = this.classUnderTest.createTransaction("account.from", "account.to", 125L, "24.02.2019", "XXX", false, null, null);
 
         // Assert
         Assert.assertEquals(ResponseReason.CREATED, response);

financer-web-client/src/main/java/de/financer/controller/AccountController.java

@@ -126,7 +126,7 @@ public class AccountController {
 
             model.addAttribute("account", account);
             model.addAttribute("transactions", transactions);
-            model.addAttribute("showActions", true);
+            model.addAttribute("showActionDelete", true);
             model.addAttribute("isClosed", AccountStatus.CLOSED.equals(account.getStatus()));
         }
         catch(FinancerRestException e) {

financer-web-client/src/main/java/de/financer/controller/FileController.java

@@ -0,0 +1,43 @@
+package de.financer.controller;
+
+import de.financer.config.FinancerConfig;
+import de.financer.model.File;
+import de.financer.template.FinancerRestTemplate;
+import de.financer.template.exception.FinancerRestException;
+import de.financer.util.ControllerUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.ByteArrayResource;
+import org.springframework.core.io.Resource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.util.UriComponentsBuilder;
+
+import java.util.Base64;
+
+@Controller
+public class FileController {
+    @Autowired
+    private FinancerConfig financerConfig;
+
+    @GetMapping("/downloadFile")
+    public ResponseEntity<Resource> downloadFile(Long fileId) {
+        final UriComponentsBuilder builder = UriComponentsBuilder
+                .fromHttpUrl(ControllerUtils.buildUrl(this.financerConfig, Function.FILE_GET))
+                .queryParam("fileId", fileId);
+
+        final File file;
+
+        try {
+            file = FinancerRestTemplate.exchangeGet(builder, File.class);
+        } catch (FinancerRestException e) {
+            // TODO
+            return null;
+        }
+
+        return ResponseEntity.ok()
+                             .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + file.getName() + "\"")
+                             .body(new ByteArrayResource(Base64.getDecoder().decode(file.getContent())));
+    }
+}

financer-web-client/src/main/java/de/financer/controller/Function.java

@@ -32,7 +32,9 @@ public enum Function {
     RT_CREATE_TRANSACTION("recurringTransactions/createTransaction"),
 
     P_GET_CURRENT_EXPENSE_PERIOD("periods/getCurrentExpensePeriod"),
-    P_CLOSE_CURRENT_EXPENSE_PERIOD("periods/closeCurrentExpensePeriod");
+    P_CLOSE_CURRENT_EXPENSE_PERIOD("periods/closeCurrentExpensePeriod"),
+
+    FILE_GET("file");
 
     private final String path;
 

financer-web-client/src/main/java/de/financer/controller/TransactionController.java

@@ -19,6 +19,8 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.util.UriComponentsBuilder;
 
+import java.io.IOException;
+import java.util.Base64;
 import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
@@ -32,7 +34,7 @@ public class TransactionController {
     @GetMapping("/searchTransactions")
     public String searchTransaction(Model model) {
         model.addAttribute("form", new SearchTransactionsForm());
-        model.addAttribute("showActions", false);
+        model.addAttribute("showActionDelete", false);
         ControllerUtils.addVersionAttribute(model, this.financerConfig);
         ControllerUtils.addCurrencySymbol(model, this.financerConfig);
 
@@ -60,7 +62,7 @@ public class TransactionController {
         }
 
         model.addAttribute("form", form);
-        model.addAttribute("showActions", false);
+        model.addAttribute("showActionDelete", false);
         ControllerUtils.addVersionAttribute(model, this.financerConfig);
         ControllerUtils.addCurrencySymbol(model, this.financerConfig);
 
@@ -117,6 +119,15 @@ public class TransactionController {
         requestDto.setDescription(form.getDescription());
         requestDto.setTaxRelevant(form.getTaxRelevant());
 
+        if (form.getFile() != null) {
+            try {
+                requestDto.setFileContent(Base64.getEncoder().encodeToString(form.getFile().getBytes()));
+                requestDto.setFileName(form.getFile().getOriginalFilename());
+            } catch (IOException ioe) {
+                // TODO No file for us :(
+            }
+        }
+
         final ResponseReason responseReason = FinancerRestTemplate
                 .exchangePost(this.financerConfig, Function.TR_CREATE_TRANSACTION, requestDto);
 

financer-web-client/src/main/java/de/financer/form/NewTransactionForm.java

@@ -1,5 +1,7 @@
 package de.financer.form;
 
+import org.springframework.web.multipart.MultipartFile;
+
 public class NewTransactionForm {
     private String fromAccountKey;
     private String toAccountKey;
@@ -7,6 +9,7 @@ public class NewTransactionForm {
     private String date;
     private String description;
     private Boolean taxRelevant;
+    private MultipartFile file;
 
     public String getFromAccountKey() {
         return fromAccountKey;
@@ -55,4 +58,12 @@ public class NewTransactionForm {
     public void setTaxRelevant(Boolean taxRelevant) {
         this.taxRelevant = taxRelevant;
     }
+
+    public MultipartFile getFile() {
+        return file;
+    }
+
+    public void setFile(MultipartFile file) {
+        this.file = file;
+    }
 }

financer-web-client/src/main/java/de/financer/template/FinancerRestTemplate.java

@@ -76,6 +76,19 @@ public class FinancerRestTemplate<T> {
         return ResponseReason.fromResponseEntity(response);
     }
 
+    public static <R> R exchangeGet(UriComponentsBuilder builder, Class<R> type) throws FinancerRestException {
+        final RestTemplate restTemplate = new RestTemplate();
+
+        try {
+            return restTemplate.exchange(builder.toUriString(), HttpMethod.GET, null, type).getBody();
+        } catch (HttpStatusCodeException e) {
+            final ResponseEntity<String> exceptionResponse = new ResponseEntity<>(e.getResponseBodyAsString(), e
+                    .getStatusCode());
+
+            throw new FinancerRestException(ResponseReason.fromResponseEntity(exceptionResponse));
+        }
+    }
+
     public static <R> R exchangeGet(FinancerConfig financerConfig,
                                      Function endpoint,
                                      Class<R> type) throws FinancerRestException {

financer-web-client/src/main/resources/i18n/message.properties

@@ -44,6 +44,7 @@ financer.transaction-new.label.amount=Amount\:
 financer.transaction-new.label.date=Date\:
 financer.transaction-new.label.description=Description\:
 financer.transaction-new.label.taxRelevant=Tax relevant\: 
+financer.transaction-new.label.file=File\:
 financer.transaction-new.submit=Create transaction
 financer.transaction-new.account-type.BANK={0}|Bank|{1}{2}
 financer.transaction-new.account-type.CASH={0}|Cash|{1}{2}
@@ -112,6 +113,7 @@ financer.account-details.details.balance=Current balance\:
 financer.account-details.details.group=Group\:
 financer.transaction-list.table-header.actions=Actions
 financer.transaction-list.table.actions.deleteTransaction=Delete
+financer.transaction-list.table.actions.downloadFile=Download file
 financer.transaction-list.table.recurring.yes=Yes
 financer.transaction-list.table.recurring.no=No
 financer.transaction-list.table.taxRelevant.true=Yes
@@ -135,6 +137,7 @@ financer.search-transactions.show-query-options.toAccountGroup=toAccountGroup\:
 financer.search-transactions.show-query-options.date=date\: the date of the transaction in the format yyyy-mm-dd
 financer.search-transactions.show-query-options.recurring=recurring\: whether the transaction has been created from a recurring transaction
 financer.search-transactions.show-query-options.taxRelevant=taxRelevant\: whether the transaction is relevant for tax declaration
+financer.search-transactions.show-query-options.hasFile=hasFile\: whether the transaction has a file linked
 financer.search-transactions.show-query-options.period=period\: the period the transaction is assigned to
 financer.search-transactions.show-query-options.period.CURRENT=CURRENT\: denotes the current expense period
 financer.search-transactions.show-query-options.period.LAST=LAST\: denotes the last expense period
@@ -242,4 +245,7 @@ financer.error-message.ACCOUNT_NOT_FOUND=The account could not be found!
 financer.error-message.DUPLICATE_ACCOUNT_KEY=An account with the given key already exists!
 financer.error-message.DUPLICATE_ACCOUNT_GROUP_NAME=An account group with the given key already exists!
 financer.error-message.ACCOUNT_GROUP_NOT_FOUND=The account group could not be found!
-financer.error-message.UNKNOWN_CHART_TYPE=The selected chart type is not known!
+financer.error-message.UNKNOWN_CHART_TYPE=The selected chart type is not known!
+financer.error-message.INVALID_HAS_FILE_VALUE=The value for parameter hasFile cannot be parsed!
+financer.error-message.INVALID_FILE_CONTENT=File content is missing!
+financer.error-message.INVALID_FILE_NAME=File name is missing!

financer-web-client/src/main/resources/i18n/message_de_DE.properties

@@ -44,6 +44,7 @@ financer.transaction-new.label.amount=Betrag\:
 financer.transaction-new.label.date=Datum\:
 financer.transaction-new.label.description=Beschreibung\:
 financer.transaction-new.label.taxRelevant=Relevant f\u00FCr Steuererkl\u00E4rung\:
+financer.transaction-new.label.file=Datei\:
 financer.transaction-new.submit=Buchung erstellen
 financer.transaction-new.account-type.BANK={0}|Bank|{1}{2}
 financer.transaction-new.account-type.CASH={0}|Bar|{1}{2}
@@ -112,6 +113,7 @@ financer.account-details.details.balance=Kontostand\:
 financer.account-details.details.group=Gruppe\:
 financer.transaction-list.table-header.actions=Aktionen
 financer.transaction-list.table.actions.deleteTransaction=L\u00F6schen
+financer.transaction-list.table.actions.downloadFile=Datei herunterladen
 financer.transaction-list.table.recurring.yes=Ja
 financer.transaction-list.table.recurring.no=Nein
 financer.transaction-list.table.taxRelevant.true=Ja
@@ -135,6 +137,7 @@ financer.search-transactions.show-query-options.toAccountGroup=toAccountGroup\:
 financer.search-transactions.show-query-options.date=date\: das Datum der Buchung im Format jjjj-mm-tt
 financer.search-transactions.show-query-options.recurring=recurring\: ob die Buchung durch eine wiederkehrende Buchung erzeugt wurde
 financer.search-transactions.show-query-options.taxRelevant=taxRelevant\: ob die Buchung als steuerrelevant markiert wurde
+financer.search-transactions.show-query-options.hasFile=hasFile\: ob eine Datei der Buchung zugeordnet ist
 financer.search-transactions.show-query-options.period=period\: die Periode der Buchung
 financer.search-transactions.show-query-options.period.CURRENT=CURRENT\: bezeichnet die aktuelle Ausgabenperiode
 financer.search-transactions.show-query-options.period.LAST=LAST\: bezeichnet die letzte Ausgabenperiode
@@ -241,4 +244,7 @@ financer.error-message.ACCOUNT_NOT_FOUND=Das ausgew\u00E4hlte Konto wurde nicht
 financer.error-message.DUPLICATE_ACCOUNT_KEY=Ein Konto mit diesem Schl\u00FCssel existiert bereits!
 financer.error-message.DUPLICATE_ACCOUNT_GROUP_NAME=Eine Konto-Gruppe mit diesem Namen existiert bereits!
 financer.error-message.ACCOUNT_GROUP_NOT_FOUND=Die ausgew\u00E4hlte Konto-Gruppe wurde nicht gefunden!
-financer.error-message.UNKNOWN_CHART_TYPE=Das ausgew\u00E4hlte Diagramm wurde nicht gefunden!
+financer.error-message.UNKNOWN_CHART_TYPE=Das ausgew\u00E4hlte Diagramm wurde nicht gefunden!
+financer.error-message.INVALID_HAS_FILE_VALUE=Der Wert des Parameters hasFile kann nicht verarbeitet werden!
+financer.error-message.INVALID_FILE_CONTENT=Der Inhalt der Datei fehlt!
+financer.error-message.INVALID_FILE_NAME=Der Dateiname fehlt!

financer-web-client/src/main/resources/static/changelog.txt

@@ -1,5 +1,7 @@
 v27 -> v28:
 - Add account end balance to account statistics for closed expense periods. This is currently not visible in the UI
+- Add file upload to transaction creation for e.g. invoices. They can be downloaded in the transaction overview of an
+  account
 
 v26 -> v27:
 - Changed sort order of accounts in overview page. The accounts are now sorted by the account type first (BCILES), then
@@ -7,7 +9,7 @@ v26 -> v27:
 - Add tax relevance flag to transaction and recurring transaction creation. This flag denotes whether a transaction or
   the instances of a recurring transaction are relevant for a tax declaration. This is preparation for extended reports
 - Add searching of transactions via FQL (Financer Query Language)
-- Rework /transaction end point to better adhere to REST API requirements (proper HTTP return codes and HTTP method
+- Rework /transactions end point to better adhere to REST API requirements (proper HTTP return codes and HTTP method
   usage)
 
 v25 -> v26:

financer-web-client/src/main/resources/templates/transaction/newTransaction.html

@@ -12,7 +12,7 @@
 <span class="errorMessage" th:if="${errorMessage != null}" th:text="#{'financer.error-message.' + ${errorMessage}}"/>
 <a th:href="@{/accountOverview}" th:text="#{financer.cancel-back-to-overview}"/>
 <form id="new-transaction-form" action="#" th:action="@{/saveTransaction}" th:object="${form}"
-      method="post">
+      method="post" enctype="multipart/form-data">
     <label for="selectFromAccount" th:text="#{financer.transaction-new.label.from-account}"/>
     <select id="selectFromAccount" th:field="*{fromAccountKey}">
         <option th:each="acc : ${fromAccounts}" th:value="${acc.key}"
@@ -31,8 +31,10 @@
     <input type="text" id="inputDescription" th:field="*{description}"/>
     <label for="inputTaxRelevant" th:text="#{financer.transaction-new.label.taxRelevant}" />
     <input type="checkbox" id="inputTaxRelevant" th:field="*{taxRelevant}" />
-    <input type="submit" th:value="#{financer.transaction-new.submit}"/>
+    <label for="inputFile" th:text="#{financer.transaction-new.label.file}" />
+    <input type="file" id="inputFile" th:field="*{file}" />
+    <input type="submit" th:value="#{financer.transaction-new.submit}" />
 </form>
-<div th:replace="includes/footer :: footer"/>
+<div th:replace="includes/footer :: footer" />
 </body>
 </html>

financer-web-client/src/main/resources/templates/transaction/searchTransactions.html

@@ -31,6 +31,7 @@
                 <li th:text="#{financer.search-transactions.show-query-options.date}" />
                 <li th:text="#{financer.search-transactions.show-query-options.recurring}" />
                 <li th:text="#{financer.search-transactions.show-query-options.taxRelevant}" />
+                <li th:text="#{financer.search-transactions.show-query-options.hasFile}" />
                 <li><span th:text="#{financer.search-transactions.show-query-options.period}" />
                     <ul>
                         <li th:text="#{financer.search-transactions.show-query-options.period.CURRENT}" />

financer-web-client/src/main/resources/templates/transaction/transactionList.html

@@ -21,10 +21,14 @@
             <td th:if="${transaction.recurring}" th:text="#{financer.transaction-list.table.recurring.yes}" />
             <td th:if="${!transaction.recurring}" th:text="#{financer.transaction-list.table.recurring.no}" />
             <td th:text="#{'financer.transaction-list.table.taxRelevant.' + ${transaction.taxRelevant}}" />
-            <td th:if="${showActions}">
+            <td nowrap>
                 <div id="account-transaction-table-actions-container">
                     <a th:href="@{/deleteTransaction(transactionId=${transaction.id}, accountKey=${account.key})}"
-                       th:text="#{financer.transaction-list.table.actions.deleteTransaction}"/>
+                       th:text="#{financer.transaction-list.table.actions.deleteTransaction}"
+                       th:if="${showActionDelete}" />
+                    <a th:href="@{/downloadFile(fileId=${transaction.fileId})}"
+                       th:text="#{financer.transaction-list.table.actions.downloadFile}"
+                       th:if="${transaction.fileId != null}" />
                 </div>
             </td>
         </tr>