feat(material): 新增生成编号接口

src/main/java/mjkf/xinke/main/controller/MaterialController.java

@@ -132,4 +132,27 @@ public class MaterialController {
 
         return FuHttpResponse.Builder().dataResponse(data).build();
     }
+
+    @ApiOperation("生成编号")
+    @PostMapping("/id")
+    public HttpResponse createId (
+            @ApiParam(value = "父 id") @RequestParam(value="parent_id") String parentId
+    ) throws Exception {
+        var query = new LambdaQueryWrapper<Material>();
+        query.eq(Material::getParentId, parentId);
+        query.orderByDesc(Material::getId);
+        var data = materialService.list(query);
+        String maxBrotherId;
+        if (data == null) {
+            maxBrotherId = null;
+        } else {
+            maxBrotherId = data.get(0).getId();
+        }
+
+        String materialId = materialService.createNewMaterialId(parentId, maxBrotherId);
+        var result = Map.of("material_id", materialId);
+        return FuHttpResponse.Builder().dataResponse(result).build();
+    }
+
+
 }

src/main/java/mjkf/xinke/main/service/MaterialService.java

@@ -7,6 +7,36 @@ import org.springframework.stereotype.Service;
 
 @Service
 public class MaterialService extends ServiceImpl<BaseMapper<Material>, Material> {
+    public String createNewMaterialId(String parentId, String maxBrotherId) {
+        String prefix;
+        String suffix;
+        String previous;
+        if (parentId.contains("00.00.00.00")) {
+            prefix = "";
+            suffix = ".00.00.00";
+            previous = maxBrotherId.substring(0, 2);
+        } else if (parentId.contains("00.00.00")) {
+            prefix = parentId.substring(0, 3);
+            suffix = ".00.00";
+            previous = maxBrotherId.substring(3, 5);
+        } else if (parentId.contains("00.00")) {
+            prefix = parentId.substring(0, 6);
+            suffix = ".00";
+            previous = maxBrotherId.substring(6, 8);
+        } else if (parentId.contains("00")) {
+            prefix = parentId.substring(0, 9);
+            suffix = "";
+            previous = maxBrotherId.substring(9, 11);
+        } else {
+            return null;
+        }
 
+        var current = Integer.valueOf(previous) + 1;
+        if (current < 60) {
+            current = 60;
+        }
+
+        return prefix + String.format("%02d", current) + suffix;
+    }
 }