Move services for collecting items to Finders

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/app/finders/projects_finder.rb b/app/finders/projects_finder.rb
new file mode 100644
index 00000000000..bfaba758788
--- /dev/null
+++ b/app/finders/projects_finder.rb
@@ -0,0 +1,63 @@
+class ProjectsFinder
+  def execute(current_user, options)
+    group = options[:group]
+
+    if group
+      group_projects(current_user, group)
+    else
+      all_projects(current_user)
+    end
+  end
+
+  private
+
+  def group_projects(current_user, group)
+    if current_user
+      if group.users.include?(current_user)
+        # User is group member
+        #
+        # Return ALL group projects
+        group.projects
+      else
+        projects_members = UsersProject.where(
+          project_id: group.projects,
+          user_id: current_user
+        )
+
+        if projects_members.any?
+          # User is a project member
+          #
+          # Return only:
+          #   public projects
+          #   internal projects
+          #   joined projects
+          #
+          group.projects.where(
+            "projects.id IN (?) OR projects.visibility_level IN (?)",
+            projects_members.pluck(:project_id),
+            Project.public_and_internal_levels
+          )
+        else
+          # User has no access to group or group projects
+          #
+          # Return only:
+          #   public projects
+          #   internal projects
+          #
+          group.projects.public_and_internal_only
+        end
+      end
+    else
+      # Not authenticated
+      #
+      # Return only:
+      #   public projects
+      group.projects.public_only
+    end
+  end
+
+  def all_projects
+    # TODO: implement
+    raise 'Not implemented yet'
+  end
+end