Add GraphQL filters for issuables (state, labels, time fields)

Signed-off-by: Rémy Coutable <remy@rymai.me>

5 files changed, 32 insertions, 2 deletions

diff --git a/app/graphql/types/issuable_state_enum.rb b/app/graphql/types/issuable_state_enum.rb
new file mode 100644
index 00000000000..f2f6d6c6cab
--- /dev/null
+++ b/app/graphql/types/issuable_state_enum.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Types
+  class IssuableStateEnum < BaseEnum
+    graphql_name 'IssuableState'
+    description 'State of a GitLab issue or merge request'
+
+    value 'opened'
+    value 'closed'
+    value 'locked'
+  end
+end
diff --git a/app/graphql/types/issue_state_enum.rb b/app/graphql/types/issue_state_enum.rb
new file mode 100644
index 00000000000..6521407fc9d
--- /dev/null
+++ b/app/graphql/types/issue_state_enum.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+module Types
+  class IssueStateEnum < IssuableStateEnum
+    graphql_name 'IssueState'
+    description 'State of a GitLab issue'
+  end
+end
diff --git a/app/graphql/types/issue_type.rb b/app/graphql/types/issue_type.rb
index a8f2f7914a8..87f6b1f8278 100644
--- a/app/graphql/types/issue_type.rb
+++ b/app/graphql/types/issue_type.rb
@@ -11,7 +11,7 @@ module Types
     field :iid, GraphQL::ID_TYPE, null: false
     field :title, GraphQL::STRING_TYPE, null: false
     field :description, GraphQL::STRING_TYPE, null: true
-    field :state, GraphQL::STRING_TYPE, null: false
+    field :state, IssueStateEnum, null: false
 
     field :author, Types::UserType,
           null: false,
diff --git a/app/graphql/types/merge_request_state_enum.rb b/app/graphql/types/merge_request_state_enum.rb
new file mode 100644
index 00000000000..92f52726ab3
--- /dev/null
+++ b/app/graphql/types/merge_request_state_enum.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+module Types
+  class MergeRequestStateEnum < IssuableStateEnum
+    graphql_name 'MergeRequestState'
+    description 'State of a GitLab merge request'
+
+    value 'merged'
+  end
+end
diff --git a/app/graphql/types/merge_request_type.rb b/app/graphql/types/merge_request_type.rb
index 7e63d4022b1..7827b6e3717 100644
--- a/app/graphql/types/merge_request_type.rb
+++ b/app/graphql/types/merge_request_type.rb
@@ -12,7 +12,7 @@ module Types
     field :iid, GraphQL::ID_TYPE, null: false
     field :title, GraphQL::STRING_TYPE, null: false
     field :description, GraphQL::STRING_TYPE, null: true
-    field :state, GraphQL::STRING_TYPE, null: true
+    field :state, MergeRequestStateEnum, null: false
     field :created_at, Types::TimeType, null: false
     field :updated_at, Types::TimeType, null: false
     field :source_project, Types::ProjectType, null: true