src/main/java/ru/ulstu/paper/model/Paper.java

@@ -37,6 +37,9 @@ public class Paper extends BaseEntity {
     @Column(name = "update_date")
     private Date updateDate;
 
+    @Column(name = "deadline_date")
+    private Date deadlineDate;
+
     private String comment;
 
     private Boolean locked;
@@ -72,6 +75,14 @@ public class Paper extends BaseEntity {
         this.updateDate = updateDate;
     }
 
+    public Date getDeadlineDate() {
+        return deadlineDate;
+    }
+
+    public void setDeadlineDate(Date deadlineDate) {
+        this.deadlineDate = deadlineDate;
+    }
+
     public String getComment() {
         return comment;
     }

src/main/java/ru/ulstu/paper/model/PaperDto.java

@@ -15,6 +15,7 @@ public class PaperDto {
     private final Paper.PaperStatus status;
     private final Date createDate;
     private final Date updateDate;
+    private final Date deadlineDate;
     private final String comment;
     private final Boolean locked;
     private final String tmpFileName;
@@ -29,6 +30,7 @@ public class PaperDto {
                     @JsonProperty("status") Paper.PaperStatus status,
                     @JsonProperty("createDate") Date createDate,
                     @JsonProperty("updateDate") Date updateDate,
+                    @JsonProperty("deadlineDate") Date deadlineDate,
                     @JsonProperty("comment") String comment,
                     @JsonProperty("locked") Boolean locked,
                     @JsonProperty("tmpFileName") String tmpFileName,
@@ -38,6 +40,7 @@ public class PaperDto {
         this.status = status;
         this.createDate = createDate;
         this.updateDate = updateDate;
+        this.deadlineDate = deadlineDate;
         this.comment = comment;
         this.locked = locked;
         this.tmpFileName = tmpFileName;
@@ -53,6 +56,7 @@ public class PaperDto {
         this.status = paper.getStatus();
         this.createDate = paper.getCreateDate();
         this.updateDate = paper.getUpdateDate();
+        this.deadlineDate = paper.getDeadlineDate();
         this.comment = paper.getComment();
         this.locked = paper.getLocked();
         this.tmpFileName = null;
@@ -82,6 +86,8 @@ public class PaperDto {
         return updateDate;
     }
 
+    public Date getDeadlineDate() {return  deadlineDate;}
+
     public String getComment() {
         return comment;
     }

src/main/java/ru/ulstu/paper/service/DeadlineScheduler.java

@@ -0,0 +1,65 @@
+package ru.ulstu.paper.service;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+import ru.ulstu.paper.model.Paper;
+import ru.ulstu.paper.repository.PaperRepository;
+import ru.ulstu.user.model.User;
+import ru.ulstu.user.scheduler.UserScheduler;
+import ru.ulstu.user.service.MailService;
+
+import java.util.Calendar;
+import java.util.List;
+
+@Service
+public class DeadlineScheduler {
+
+    private final Logger log = LoggerFactory.getLogger(DeadlineScheduler.class);
+
+    private final PaperRepository paperRepository;
+
+    private final MailService mailService;
+
+    private final static boolean IS_DEADLINE_NOTIFICATION_BEFORE_WEEK = true;
+
+    public DeadlineScheduler(PaperRepository paperRepository, MailService mailService) {
+        this.paperRepository = paperRepository;
+        this.mailService = mailService;
+    }
+
+
+    @Scheduled(cron = "0 0 8 * 1 ?")
+    public void checkDeadlineBeforeWeek() {
+        log.debug("DeadlineScheduler.checkDeadlineBeforeWeek started");
+        sendNotifications(IS_DEADLINE_NOTIFICATION_BEFORE_WEEK);
+        log.debug("DeadlineScheduler.checkDeadlineBeforeWeek finished");
+    }
+
+    @Scheduled(cron = "0 0 8 * * ?")
+    public void checkDeadlineAfterWeek() {
+        log.debug("DeadlineScheduler.checkDeadlineAfterWeek started");
+        sendNotifications(!IS_DEADLINE_NOTIFICATION_BEFORE_WEEK);
+        log.debug("DeadlineScheduler.checkDeadlineAfterWeek finished");
+    }
+
+    private void sendNotifications(boolean isDeadlineBeforeWeek) {
+        List<Paper> allPapers = paperRepository.findAll();
+        for (Paper paper : allPapers) {
+            Calendar c = Calendar.getInstance();
+            c.add(Calendar.DAY_OF_YEAR, 7);
+            if (((c.getTime().compareTo(paper.getDeadlineDate()) < 0) && isDeadlineBeforeWeek) ||
+                    (c.getTime().compareTo(paper.getDeadlineDate()) >= 0) && !isDeadlineBeforeWeek) {
+                sendMessageDeadline(paper);
+            }
+        }
+    }
+
+    private void sendMessageDeadline(Paper paper){
+        for (User user : paper.getAuthors()) {
+            mailService.sendEmail(user.getEmail(), "Приближается срок сдачи статьи",
+                    "Срок сдачи статьи " + paper.getTitle() + " " + paper.getDeadlineDate().toString());
+        }
+    }
+}

src/main/resources/db/changelog-20181027_000000-schema.xml

@@ -0,0 +1,13 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">
+    <changeSet author="orion" id="20181027_000000-1">
+        <preConditions  onFail="MARK_RAN">
+            <not><columnExists columnName="deadline_date" tableName="paper"/></not>
+        </preConditions>
+        <addColumn tableName="paper">
+            <column name="deadline_date" type="TIMESTAMP"/>
+        </addColumn>
+    </changeSet>
+</databaseChangeLog>

src/main/resources/db/changelog-master.xml

@@ -11,4 +11,5 @@
     <include file="db/changelog-20180405_110000-schema.xml"/>
     <include file="db/changelog-20180428_110000-schema.xml"/>
     <include file="db/changelog-20180505_000000-schema.xml"/>
+    <include file="db/changelog-20181027_000000-schema.xml"/>
 </databaseChangeLog>