New: Added function to leave a project

coscine/issues#982

src/Project/Controllers/ProjectRoleController.cs

@@ -91,8 +91,9 @@ namespace Coscine.Api.Project.Controllers
             return Json(_projectRoleModel.GetAllWhere((projectRole) =>
                 (projectRole.UserId == user.Id &&
                 projectRole.ProjectId == projectIdGuid)
-            ).Select((projectRole) => {
-                if(projectRole.Role == null)
+            ).Select((projectRole) =>
+            {
+                if (projectRole.Role == null)
                 {
                     projectRole.Role = roleModel.GetById(projectRole.RoleId);
                 }
@@ -137,12 +138,12 @@ namespace Coscine.Api.Project.Controllers
         {
             var projectModel = new ProjectModel();
             var user = _authenticator.GetUser();
+            var project = projectModel.GetById(projectId);
 
-            if (projectModel.HasAccess(user, projectModel.GetById(projectId), UserRoles.Owner))
+            if (projectModel.HasAccess(user, project, UserRoles.Owner))
             {
                 _projectRoleModel.CheckIfLastOwnerWillBeRemoved(roleId, projectId);
-
-                var project = projectModel.GetById(projectId);
+                
                 var userModel = new UserModel();
                 var userToRemove = userModel.GetById(userId);
 
@@ -164,6 +165,36 @@ namespace Coscine.Api.Project.Controllers
                 return Unauthorized("The user is not authorized to delete a project role for the given project!");
             }
         }
+
+        [HttpDelete("[controller]/project/{projectId}/user")]
+        public IActionResult Delete(Guid projectId)
+        {
+            var projectModel = new ProjectModel();
+            var user = _authenticator.GetUser();
+            var project = projectModel.GetById(projectId);
+            var roleId = _projectRoleModel.GetGetUserRoleForProject(projectId, user.Id);
+
+            if (projectModel.HasAccess(user, project, UserRoles.Owner, UserRoles.Member))
+            {
+                _projectRoleModel.CheckIfLastOwnerWillBeRemoved((Guid)roleId, projectId);
+                _emitter.EmitUserRemove(new UserEventArgs(this._configuration)
+                {
+                    Project = project,
+                    User = user
+                });
+
+                LogAnalytics("Leave Project", user, null, project.Id.ToString());
+                return Json(_projectRoleModel.Delete(_projectRoleModel.GetWhere((projectRole) =>
+                        projectRole.ProjectId == projectId
+                        && projectRole.UserId == user.Id
+                        && projectRole.RoleId == roleId)));
+            }
+            else
+            {
+                return Unauthorized("The user is not authorized to access the given project!");
+            }
+        }
+
         private void LogAnalytics(string operation,
             User user,
             IEnumerable<ProjectRoleObject> users = null,