namespace _zeitbild.api
{
	
	/**
	 */
	export function register_calendar_change(
		rest_subject : lib_plankton.rest_caldav.type_rest
	) : void
	{
		register<
			{
				name : string;
				access : {
					public : boolean;
					default_level : ("none" | "view" | "edit" | "admin");
					attributed : Array<
						{
							user_id : int;
							level : ("none" | "view" | "edit" | "admin");
						}
					>;
				};
			},
			null
		>(
			rest_subject,
			lib_plankton.http.enum_method.put,
			"/calendar/:calendar_id",
			{
				"description": "ändert einen Kalender (Resource ist fest)",
				"input_schema": () => ({
					"nullable": true,
					// TODO
				}),
				"output_schema": () => ({
					"nullable": true,
					"type": "null",
				}),
				"restriction": restriction_logged_in,
				"execution": async (stuff) => {
					const session : {key : string; value : lib_plankton.session.type_session;} = await session_from_stuff(stuff);
					const user_id : _zeitbild.type_user_id = await _zeitbild.service.user.identify(session.value.name);
					
					if (stuff.input === null) {
						return Promise.reject(new Error("impossible"));
					}
					else {
						const calendar_id : _zeitbild.type_calendar_id = parseInt(stuff.path_parameters["calendar_id"]);
						// TODO move logic to calendar service
						const calendar_object_old : _zeitbild.type_calendar_object = await _zeitbild.service.calendar.get(
							calendar_id,
							user_id
						);
						const calendar_object_new : _zeitbild.type_calendar_object = {
							"name": stuff.input.name,
							"access": {
								"public": stuff.input.access.public,
								"default_level": _zeitbild.value_object.access_level.from_string(stuff.input.access.default_level),
								"attributed": lib_plankton.map.hashmap.implementation_map(
									lib_plankton.map.hashmap.make(
										x => x.toFixed(0),
										{
											"pairs": (
												stuff.input.access.attributed
												.map(
													(entry) => ({
														"key": entry.user_id,
														"value": _zeitbild.value_object.access_level.from_string(entry.level),
													})
												)
											),
										}
									)
								),
							},
							"resource_id": calendar_object_old.resource_id
						};
						await _zeitbild.service.calendar.change(
							calendar_id,
							calendar_object_new,
							user_id
						);
						return Promise.resolve(
							{
								"status_code": 200,
								"data": null,
							}
						);
					}
				}
			}
		);
	}
	
}