Refactor Course API to save group registration settings (#1675)

modules/fbs-core/api/src/main/resources/migrations/22_group_selection_field_added.sql

@@ -0,0 +1,8 @@
+BEGIN;
+
+alter table `fbs`.`course`
+    ADD `group_selection` BOOLEAN NULL DEFAULT NULL;
+
+INSERT INTO migration (number) VALUES (22);
+
+COMMIT;

modules/fbs-core/api/src/main/scala/de/thm/ii/fbs/controller/CourseController.scala

@@ -164,4 +164,32 @@ class CourseController {
       case _ => throw new ForbiddenException()
     }
   }
+
+
+  /**
+   * Update only the group selection of a course
+   *
+   * @param cid  Course id
+   * @param req  http request
+   * @param res  http response
+   * @param body Request Body
+   */
+  @PutMapping(value = Array("/{cid}/groupSelection"))
+  def updateGroupSelection(@PathVariable("cid") cid: Integer, req: HttpServletRequest, res: HttpServletResponse,
+             @RequestBody body: JsonNode): Unit = {
+    val user = authService.authorize(req, res)
+    val someCourseRole = courseRegistrationService.getParticipants(cid).find(_.user.id == user.id).map(_.role)
+
+    (user.globalRole, someCourseRole) match {
+      case (GlobalRole.ADMIN | GlobalRole.MODERATOR, _) | (_, Some(CourseRole.DOCENT)) =>
+        (
+          body.retrive("groupSelection").asBool(),
+        ) match {
+          case (Some(groupSelection)) =>
+            courseService.updateGroupSelection(cid, groupSelection)
+          case _ => throw new BadRequestException("Malformed Request Body")
+        }
+      case _ => throw new ForbiddenException()
+    }
+  }
 }

modules/fbs-core/api/src/main/scala/de/thm/ii/fbs/model/Course.scala

@@ -7,5 +7,7 @@ package de.thm.ii.fbs.model
   * @param description The description of this course
   * @param visible The visibility of the course, false = invisible
   * @param id The id of the course, if 0, then none was assigned.
+  * @param groupSelection Whether registration for groups is possible
   */
-case class Course(name: String, description: String = "", visible: Boolean = true, id: Int = 0, semesterId: Option[Int] = None)
+case class Course(name: String, description: String = "", visible: Boolean = true, id: Int = 0, semesterId: Option[Int] = None,
+                  groupSelection: Option[Boolean] = None)

modules/fbs-core/api/src/main/scala/de/thm/ii/fbs/services/persistence/CourseService.scala

@@ -100,4 +100,16 @@ class CourseService {
       Some(tmp)
     }
   }
+
+  /**
+   * Update only the group selection of a course
+   *
+   * @param cid The course id
+   * @param groupSelection The new group selection status
+   * @return True if successful
+   */
+  def updateGroupSelection(cid: Int, groupSelection: Boolean): Boolean = {
+    1 == DB.update("UPDATE course SET group_selection = ? WHERE course_id = ?",
+      groupSelection, cid)
+  }
 }