/*
Copyright 2016-2024 'Christian Fraß, Christian Neubauer, Martin Springwald GbR'
<info@greenscale.de>

»heimdall« 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.

»heimdall« 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 »heimdall«. If not, see <http://www.gnu.org/licenses/>.
 */


namespace _heimdall.notification_kinds.email
{
	
	/**
	 */
	function parameters_schema(
	) : _heimdall.helpers.json_schema.type_schema
	{
		return {
			"type": "object",
			"additionalProperties": false,
			"properties": {
				"access": {
					"type": "object",
					"additionalProperties": false,
					"properties": {
						"host": {
							"type": "string"
						},
						"port": {
							"type": "integer"
						},
						"username": {
							"type": "string"
						},
						"password": {
							"type": "string"
						}
					},
					"required": [
						"host",
						"port",
						"username",
						"password"
					]
				},
				"sender": {
					"type": "string"
				},
				"receivers": {
					"type": "array",
					"items": {
						"type": "string"
					}
				},
				"tags": {
					"description": "list of strings, which will be placed in the e-mail subject",
					"type": "array",
					"items": {
						"type": "string"
					},
					"default": []
				}
			},
			"required": [
				"access",
				"sender",
				"receivers"
			]
		};
	}
	
	
	/**
	 */
	function normalize_order_node(
		node : any
	) : any
	{
		return Object.assign(
			{
			},
			node
		);
	}
	
	
	/**
	 */
	async function notify(
		parameters : any,
		name : string,
		check : type_check,
		state : type_item_state,
		info : any
	) : Promise<void>
	{
		const nm_nodemailer = require("nodemailer");
		
		const now : Date = new Date(Date.now());
		const transporter = nm_nodemailer.createTransport(
			{
				"host": parameters.access.host,
				"port": parameters.access.port,
				"secure": true,
				"auth": {
					"user": parameters.access.username,
					"pass": parameters.access.password,
				}
			}
		);
		const send_result = await transporter.sendMail(
			{
				"from": parameters.sender,
				"to": parameters.receivers.join(","),
				"subject": lib_plankton.string.coin(
					"{{tags}} {{title}}",
					{
						"tags": (
							parameters.tags
							.concat([_heimdall.condition_show(state.condition)])
							.map(tag => lib_plankton.string.coin("[{{tag}}]", {"tag": tag.toUpperCase()}))
							.join(" ")
						),
						"title": check.name,
					}
				),
				"text": JSON.stringify(info, undefined, "\t"),
				"headers": {
					"Date": now.toUTCString(),
				}
			}
		);
		
		return Promise.resolve<void>(undefined);
	}
	
	
	/**
	 */
	register_implementation(
		"email",
		{
			"parameters_schema": parameters_schema,
			"normalize_order_node": normalize_order_node,
			"notify": notify,
		}
	);
	
}