Add count fn support to gql (#12684)

api/src/services/graphql.ts

@@ -358,6 +358,15 @@ export class GraphQLService {
 		function getTypes(action: 'read' | 'create' | 'update' | 'delete') {
 			const CollectionTypes: Record<string, ObjectTypeComposer> = {};
 
+			const CountFunctions = schemaComposer.createObjectTC({
+				name: 'count_functions',
+				fields: {
+					count: {
+						type: GraphQLInt,
+					},
+				},
+			});
+
 			const DateFunctions = schemaComposer.createObjectTC({
 				name: 'date_functions',
 				fields: {
@@ -460,6 +469,16 @@ export class GraphQLService {
 							};
 						}
 
+						if (field.type === 'json' || field.type === 'alias') {
+							acc[`${field.field}_func`] = {
+								type: CountFunctions,
+								resolve: (obj: Record<string, any>) => {
+									const funcFields = Object.keys(CountFunctions.getFields()).map((key) => `${field.field}_${key}`);
+									return mapKeys(pick(obj, funcFields), (_value, key) => key.substring(field.field.length + 1));
+								},
+							};
+						}
+
 						return acc;
 					}, {} as ObjectTypeComposerFieldConfigMapDefinition<any, any>),
 				});
@@ -694,6 +713,15 @@ export class GraphQLService {
 				},
 			});
 
+			const CountFunctionFilterOperators = schemaComposer.createInputTC({
+				name: 'count_function_filter_operators',
+				fields: {
+					count: {
+						type: NumberFilterOperators,
+					},
+				},
+			});
+
 			const DateFunctionFilterOperators = schemaComposer.createInputTC({
 				name: 'date_function_filter_operators',
 				fields: {
@@ -787,6 +815,12 @@ export class GraphQLService {
 							};
 						}
 
+						if (field.type === 'json' || field.type === 'alias') {
+							acc[`${field.field}_func`] = {
+								type: CountFunctionFilterOperators,
+							};
+						}
+
 						return acc;
 					}, {} as InputTypeComposerFieldConfigMapDefinition),
 				});