/*
This file is part of »munin«.

Copyright 2025 'Fenris Wolf' <fenris@folksprak.org>

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

»munin« 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with »munin«. If not, see <http://www.gnu.org/licenses/>.
 */


namespace _munin.conf
{
	
	/**
	 */
	type type_reminder_raw = {
		frequency : (
			"hourly"
			|
			"daily"
			|
			"weekly"
			|
			"monthly"
		);
		offset : int;
		from : int;
		to : int;
	};
	
	
	/**
	 * @todo rename to "type_conf"
	 */
	type type_conf_v6 = {
		sources : Array<
			(
				{
					kind : "ical_feed";
					data : {
						url : string;
						filtration : {
							category_whitelist : (null | Array<string>);
							category_blacklist : (null | Array<string>);
							title_whitelist : (null | Array<string>);
							title_blacklist : (null | Array<string>);
						}
					}
				}
			)
		>;
		targets : Array<
			(
				{
					kind : "email";
					data : {
						smtp_host : string;
						smtp_port : int;
						smtp_username : string;
						smtp_password : string;
						sender : string;
						receivers : Array<string>;
						hide_tags : boolean;
						reminders : Array<type_reminder_raw>;
						language : string;
						strings : {
							notification_head : string;
						};
					}
				}
				|
				{
					kind : "telegram_bot";
					data : {
						bot_token : string;
						chat_id : int;
						hide_tags : boolean;
						reminders : Array<type_reminder_raw>;
						language : string;
						strings : {
							notification_head : string;
						};
					}
				}
			)
		>;
		settings : {
			interval : float;
		};
	};
	
	
	/**
	 */	
	const current_version : string = "6";
	
	
	/**
	 * @todo remove
	 */
	export type type_conf = type_conf_v6;
	
	
	/**
	 */
	function schema_source_ical_feed(
	) : lib_plankton.conf.type_schema
	{
		return {
			"type": "object",
			"properties": {
				"kind": {
					"nullable": false,
					"type": "string",
					"enum": ["ical_feed"]
				},
				"data": {
					"nullable": false,
					"type": "object",
					"properties": {
						"url": {
							"nullable": false,
							"type": "string"
						},
						"filtration": {
							"nullable": false,
							"type": "object",
							"properties": {
								"category_whitelist": {
									"nullable": true,
									"type": "array",
									"items": {
										"nullable": false,
										"type": "string",
									},
									"default": null,
								},
								"category_blacklist": {
									"nullable": true,
									"type": "array",
									"items": {
										"nullable": false,
										"type": "string",
									},
									"default": null,
								},
								"title_whitelist": {
									"nullable": true,
									"type": "array",
									"items": {
										"nullable": false,
										"type": "string",
									},
									"default": null,
								},
								"title_blacklist": {
									"nullable": true,
									"type": "array",
									"items": {
										"nullable": false,
										"type": "string",
									},
									"default": null,
								},
							},
							"additionalProperties": false,
							"required": [
							],
							"default": {}
						},
					},
					"additionalProperties": false,
					"required": [
						"url",
					]
				}
			},
			"additionalProperties": false,
			"required": [
				"kind",
				"data",
			]
		};
	}
	
	
	/**
	 */
	function schema_sources(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "array",
			"items": {
				"nullable": false,
				"anyOf": [
					schema_source_ical_feed(),
				],
			}
		};
	}
	
	
	/**
	 */
	function schema_reminder(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "object",
			"properties": {
				"frequency": {
					"nullable": false,
					"type": "string",
					"enum": [
						"hourly",
						"daily",
						"weekly",
						"monthly",
					]
				},
				"offset": {
					"nullable": false,
					"type": "integer",
					"default": 0
				},
				"from": {
					"nullable": false,
					"type": "integer"
				},
				"to": {
					"nullable": false,
					"type": "integer"
				},
			},
			"additionalProperties": false,
			"required": [
				"frequency",
				"from",
				"to",
			]
		};
	}

	
	/**
	 */
	function default_reminder(
	) : any
	{
		return [
			{
				"frequency": "hourly",
				"from": 24,
				"to": 25
			}
		];
	}
		
	
	/**
	 */
	function schema_target_email(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "object",
			"properties": {
				"kind": {
					"nullable": false,
					"type": "string",
					"enum": ["email"]
				},
				"data": {
					"nullable": false,
					"type": "object",
					"properties": {
						"smtp_host": {
							"nullable": false,
							"type": "string",
						},
						"smtp_port": {
							"nullable": false,
							"type": "integer",
						},
						"smtp_username": {
							"nullable": false,
							"type": "string",
						},
						"smtp_password": {
							"nullable": false,
							"type": "string",
						},
						"sender": {
							"nullable": false,
							"type": "string",
							"default": "munin"
						},
						"receivers": {
							"nullable": false,
							"type": "array",
							"items": {
								"nullable": false,
								"type": "string",
							}
						},
						"hide_tags": {
							"nullable": false,
							"type": "boolean",
							"default": false,
						},
						"reminders": {
							"nullable": false,
							"type": "array",
							"items": schema_reminder(),
							"default": default_reminder(),
						},
						"language": {
							"nullable": false,
							"type": "string",
							"default": "deu"
						},
						"strings": {
							"nullable": false,
							"type": "object",
							"properties": {
								"notification_head": {
									"nullable": false,
									"type": "string",
									"default": "[{{core}}] {{extra}}"
								},
							},
							"additionalProperties": false,
							"required": [
							],
							"default": {},
						},
					},
					"additionalProperties": false,
					"required": [
						"smtp_host",
						"smtp_port",
						"smtp_username",
						"smtp_password",
						"receivers",
					]
				}
			},
			"additionalProperties": false,
			"required": [
				"kind",
				"data",
			]
		};
	}
	
	
	/**
	 */
	function schema_target_telegram_bot(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "object",
			"properties": {
				"kind": {
					"nullable": false,
					"type": "string",
					"enum": ["telegram_bot"]
				},
				"data": {
					"nullable": false,
					"type": "object",
					"properties": {
						"bot_token": {
							"nullable": false,
							"type": "string",
						},
						"chat_id": {
							"nullable": false,
							"type": "integer",
						},
						"hide_tags": {
							"nullable": false,
							"type": "boolean",
							"default": false,
						},
						"reminders": {
							"nullable": false,
							"type": "array",
							"items": schema_reminder(),
							"default": default_reminder(),
						},
						"language": {
							"nullable": false,
							"type": "string",
							"default": "deu"
						},
						"strings": {
							"nullable": false,
							"type": "object",
							"properties": {
								"notification_head": {
									"nullable": false,
									"type": "string",
									"default": "[{{core}}] {{extra}}"
								},
							},
							"additionalProperties": false,
							"required": [
							],
							"default": {},
						},
					},
					"additionalProperties": false,
					"required": [
						"bot_token",
						"chat_id",
					]
				}
			},
			"additionalProperties": false,
			"required": [
				"kind",
				"data",
			]
		};
	}
	
	
	/**
	 */
	function schema_targets(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "array",
			"items": {
				"nullable": false,
				"anyOf": [
					schema_target_email(),
					schema_target_telegram_bot(),
				]
			}
		};
	}
	
	
	/**
	 */
	function schema_settings(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "object",
			"properties": {
				"interval": {
					"nullable": false,
					"type": "number",
					"default": 1.0
				}
			},
			"additionalProperties": false,
			"required": [
			],
			"default": {
			}
		};
	}
	
	
	/**
	 */
	export function schema(
	) : lib_plankton.conf.type_schema
	{
		return {
			"nullable": false,
			"type": "object",
			"properties": {
				"sources": schema_sources(),
				"targets": schema_targets(),
				"settings": schema_settings(),
			},
			"additionalProperties": false,
			"required": [
				"sources",
				"targets",
			],
		};
	}
	
	
	/**
	 */
	export function schema_extended(
	) : lib_plankton.conf.type_schema
	{
		return {
			"type": "object",
			"properties": {
				"version": {
					"nullable": false,
					"type": "string",
					"enum": [current_version],
				},
				"content": _munin.conf.schema(),
			}
		}
	}
	
	
	/**
	 */
	export async function load(
		path : string
	) : Promise<type_conf>
	{
		const conf_raw : {version : string; content : any} = await lib_plankton.conf.load_versioned(
			path,
			schema,
			{
				"v6": null,
			}
		);
		if (conf_raw.version !== current_version)
		{
			throw (new Error("conf expected in version '" + current_version + "'"));
		}
		else
		{
			return (conf_raw.content as type_conf_v6);
		}
	}
	
}