fix: 修复局长信箱多次延期申请，第二次会覆盖第一次的问题（修改为累计延期天数）

mailbox-lan/sql/20250527.sql

@@ -0,0 +1,29 @@
+ALTER TABLE "mailbox"."mail_label"
+    ADD COLUMN "sort" int;
+
+CREATE TABLE "mailbox"."mail_extension" (
+    "id" varchar(40) NOT NULL,
+    "mail_id" varchar(40) NOT NULL,
+    "days" int2,
+    "extension_reason" text,
+    "create_time" datatime,
+    CONSTRAINT "mail_extension_pkey" PRIMARY KEY ("id")
+);
+
+COMMENT ON COLUMN "mailbox"."mail_extension"."days" IS '延期天数';
+
+COMMENT ON COLUMN "mailbox"."mail_extension"."extension_reason" IS '延期理由';
+
+COMMENT ON TABLE "mailbox"."mail_extension" IS '信件延期';
+
+
+INSERT INTO mail_extension ( ID, mail_id, days, extension_reason )
+SELECT
+    extension_request_id,
+    ID,
+    extension_days,
+    extension_reason
+FROM
+    mail
+WHERE
+    extension_state = 'applying'

mailbox-lan/src/main/java/com/biutag/lan/domain/MailExtension.java

@@ -1,6 +1,5 @@
 package com.biutag.lan.domain;
 
-import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.Getter;
@@ -14,8 +13,8 @@ import java.time.LocalDateTime;
 @Getter
 public class MailExtension {
 
-    @TableId(type = IdType.AUTO)
-    private Integer id;
+    @TableId
+    private String id;
 
     /**
      * 信件ID

mailbox-lan/src/main/java/com/biutag/lan/flow/node/ThreeVerifyFlow.java

@@ -84,6 +84,7 @@ public class ThreeVerifyFlow extends Flow {
         work.setWorkType(WorkType.extension_approval.name()).setFlowName("待审批（申请延期）").setUpdateTime(now);
         workService.updateTodoById(work);
         MailExtension mailExtension = new MailExtension();
+        mailExtension.setId(IdUtil.simpleUUID());
         mailExtension.setMailId(mailId);
         mailExtension.setExtensionReason(reason);
         mailExtension.setDays(extensionDays);
@@ -91,7 +92,7 @@ public class ThreeVerifyFlow extends Flow {
         mailExtensionMapper.insert(mailExtension);
         mail.setUpdateTime(now)
                 .setExtensionState(ExtensionState.applying.name())
-                .setExtensionRequestId(mailExtension.getId().toString());
+                .setExtensionRequestId(mailExtension.getId());
         mailService.updateById(mail);
         return null;
     }

mailbox-lan/src/main/java/com/biutag/lan/service/MailService.java

@@ -400,6 +400,7 @@ public class MailService extends ServiceImpl<MailMapper, Mail> {
                 MailExtension mailExtension = mailExtensionMapper.selectById(mail.getExtensionRequestId());
                 mail.setExtensionState(ExtensionState.completion.name())
                         .setExtensionDays(NumberUtil.nullToZero(mail.getExtensionDays()) + mailExtension.getDays())
+                        .setExtensionFlag(true)
                         // 信件状态（已延期）
                         .setMailState(MailState.delayed.name());
                 return updateById(mail);