/*
Espe | Ein schlichtes Werkzeug zur Mitglieder-Verwaltung | Backend
Copyright (C) 2024 Christian Fraß

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public 
License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later 
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied 
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see 
<https://www.gnu.org/licenses/>. 
 */

namespace _espe.api
{
	
	/**
	 */
	export function register_session_begin(
		rest_subject : lib_plankton.rest.type_rest
	) : void
	{
		lib_plankton.rest.register<
			{
				name : string;
				password : string;
			},
			(
				null
				|
				string
			)
		>(
			rest_subject,
			lib_plankton.http.enum_method.post,
			_espe.conf.get().server.path_base + "/session/begin",
			{
				"description": "führt die Anmeldung am System aus um geschützte Aktionen nutzen zu können",
				"input_schema": () => ({
					"type": "object",
					"properties": {
						"name": {
							"type": "string"
						},
						"password": {
							"type": "string"
						},
					},
					"additionalProperties": false,
					"required": [
						"name",
						"password",
					]
				}),
				"output_schema": () => ({
					"type": "string",
					"description": "der Sitzungs-Schlüssel, der als Header 'X-Session-Key' gesetzt werden muss um Erlaubnis zur Ausführung geschützter Aktionen zu erhalten",
				}),
				"restriction": restriction_none,
				"execution": async ({"input": input}) => {
					if (input === null) {
						return Promise.reject(new Error("impossible"));
					}
					else {
						const admin : (null | _espe.service.admin.type_value) = await _espe.service.admin.login(input.name, input.password);
						if (admin === null) {
							return Promise.resolve({
								"status_code": 403,
								"data": null,
							});
						}
						else {
							const session_key : string = await lib_plankton.session.begin(admin.name);
							return Promise.resolve({
								"status_code": 201,
								"data": session_key,
							});
						}
					}
				},
			}
		);
	}
	
}
