/**
 */
type type_data = {
	users : Array<
		{
			id : int;
			name : string;
			email_address : string;
			password : string;
		}
	>;
	calendars : Array<
		{
			id : int;
			name : string;
			access : {
				default_level : ("none" | "view" | "edit" | "admin");
				attributed : Array<
					{
						user_id : int;
						level : ("none" | "view" | "edit" | "admin");
					}
				>;
			};
			resource : (
				{
					kind : "local";
					data : {
						events : Array<
							_zeitbild.type_event_object
						>
					};
				}
				|
				{
					kind : "caldav";
					data : {
						url : string;
						read_only : boolean;
					};
				}
			);
		}
	>;
};


/**
 */
async function data_init(
	data : type_data
) : Promise<void>
{
	let track : {
		user : Record<
			int,
			_zeitbild.type_user_id
		>;
		calendar : Record<
			int,
			_zeitbild.type_user_id
		>;
	} = {
		"user": {},
		"calendar": {},
	};
	for await (const user_raw of data.users) {
		const user_object : _zeitbild.type_user_object = {
			"name": user_raw.name,
			"email_address": user_raw.email_address,
		};
		const user_id : _zeitbild.type_user_id = await _zeitbild.service.user.add(
			user_object
		);
		await _zeitbild.service.auth_internal.set(
			user_raw.name,
			user_raw.password
		);
		track.user[user_raw.id] = user_id;
	}
	for await (const calendar_raw of data.calendars) {
		let resource_object : _zeitbild.type_resource_object;
		let resource_id : _zeitbild.type_resource_id;
		switch (calendar_raw.resource.kind) {
			case "local": {
				resource_object = {
					"kind": "local",
					"data": {
						"event_ids": [],
					}
				};
				resource_id = await _zeitbild.service.resource.add(
					resource_object
				);
				/*const event_ids : Array<_zeitbild.type_local_resource_event_id> = */await Promise.all(
					calendar_raw.resource.data.events
					.map(
						(event_raw : _zeitbild.type_event_object) => _zeitbild.service.resource.event_add(
							resource_id,
							{
								"name": event_raw["name"],
								"public": (event_raw["public"] ?? false),
								"begin": event_raw["begin"],
								"end": (event_raw["end"] ?? null),
								"location": (event_raw["location"] ?? null),
								"description": (event_raw["description"] ?? null),
							}
						)
					)
				);
				break;
			}
			case "caldav": {
				resource_object = {
					"kind": "caldav",
					"data": {
						"url": calendar_raw.resource.data.url,
						"read_only": calendar_raw.resource.data.read_only,
					}
				};
				resource_id = await _zeitbild.service.resource.add(
					resource_object
				);
				break;
			}
		}
		const calendar_object : _zeitbild.type_calendar_object = {
			"name": calendar_raw.name,
			"access": {
				"default_level": _zeitbild.value_object.access_level.from_string(calendar_raw.access.default_level),
				"attributed": lib_plankton.map.hashmap.implementation_map(
					lib_plankton.map.hashmap.make(
						x => x.toFixed(0),
						{
							"pairs": (
								calendar_raw.access.attributed
								.map(
									(entry) => ({
										"key": track.user[entry.user_id],
										"value": _zeitbild.value_object.access_level.from_string(entry.level),
									})
								)
							),
						}
					)
				),
			},
			"resource_id": resource_id,
		};
		const calendar_id : _zeitbild.type_calendar_id = await _zeitbild.service.calendar.add(
			calendar_object
		);
		track.calendar[calendar_raw.id] = calendar_id;
	}
	return Promise.resolve<void>(undefined);
}


/**
 */
async function main(
	args_raw : Array<string>
) : Promise<void>
{
	// init1
	lib_plankton.log.conf_push(
		[
			lib_plankton.log.channel_make({"kind": "stdout", "data": {"threshold": "info"}}),
		]
	);
	
	// args
	const arg_handler : lib_plankton.args.class_handler = new lib_plankton.args.class_handler({
		"action": lib_plankton.args.class_argument.positional({
			"index": 0,
			"type": lib_plankton.args.enum_type.string,
			"mode": lib_plankton.args.enum_mode.replace,
			"default": "serve",
			"name": "action",
			"info": lib_plankton.string.coin(
				"{{description}}:\n{{options}}\n\t\t",
				{
					"description": "action",
					"options": (
						[
							{
								"name": "serve",
								"description": "serve"
							},
							{
								"name": "api-doc",
								"description": "api-doc"
							},
							{
								"name": "conf-schema",
								"description": "conf-schema"
							},
							{
								"name": "conf-expose",
								"description": "conf-expose"
							},
							{
								"name": "fill",
								"description": "fill"
							},
							{
								"name": "help",
								"description": "help"
							},
						]
						.map(
							entry => lib_plankton.string.coin(
								"\t\t- {{name}}\n\t\t\t{{description}}\n",
								{
									"name": entry.name,
									"description": entry.description,
								}
							)
						)
						.join("")
					),
				}
			),
		}),
		"conf_path": lib_plankton.args.class_argument.volatile({
			"indicators_long": ["conf_path"],
			"indicators_short": ["c"],
			"type": lib_plankton.args.enum_type.string,
			"mode": lib_plankton.args.enum_mode.replace,
			"default": "conf.json",
			// "info": null,
			"name": "conf-path",
		}),
		"data_path": lib_plankton.args.class_argument.volatile({
			"indicators_long": ["data-path"],
			"indicators_short": ["d"],
			"type": lib_plankton.args.enum_type.string,
			"mode": lib_plankton.args.enum_mode.replace,
			"default": "data.json",
			// "info": null,
			"name": "data-path",
		}),
		"help": lib_plankton.args.class_argument.volatile({
			"indicators_long": ["help"],
			"indicators_short": ["h"],
			"type": lib_plankton.args.enum_type.boolean,
			"mode": lib_plankton.args.enum_mode.replace,
			"default": false,
			// "info": null,
			"name": "help",
		}),
	});
	const args : Record<string, any> = arg_handler.read(lib_plankton.args.enum_environment.cli, args_raw.join(" "));	
	
	// init2
	await _zeitbild.conf.init(
		args["conf_path"]
	);
	lib_plankton.log.conf_push(
		_zeitbild.conf.get().log.map(
			(log_output : any) => lib_plankton.log.channel_make(
				{
					"kind": log_output.kind,
					"data": log_output.data
				}
			)
		)
	);
	
	// exec
	if (args["help"]) {
		process.stdout.write(
			arg_handler.generate_help(
				{
					"programname": "zeitbild",
					"description": "zeitbild-backend",
					"executable": "zeitbild",
				}
			)
			+
			"\n"
		);
	}
	else {
		switch (args["action"]) {
			default: {
				lib_plankton.log.error(
					"main_invalid_action",
					{
						"action": args["action"],
					}
				);
				break;
			}
			case "conf-schema": {
				process.stdout.write(
					JSON.stringify(
						_zeitbild.conf.schema(),
						undefined,
						"\t"
					)
					+
					"\n"
				);
				break;
			}
			case "conf-expose": {
				process.stdout.write(
					JSON.stringify(
						_zeitbild.conf.get(),
						undefined,
						"\t"
					)
					+
					"\n"
				);
				break;
			}
			case "api-doc": {
				lib_plankton.log.conf_push([]);
				const rest_subject : lib_plankton.rest.type_rest = _zeitbild.api.make();
				lib_plankton.log.conf_pop();
				process.stdout.write(
					JSON.stringify(
						lib_plankton.rest.to_oas(rest_subject),
						undefined,
						"\t"
					)
				);
				break;
			}
			case "fill": {
				await data_init(
					lib_plankton.json.decode(
						await lib_plankton.file.read(args.data_path)
					)
				);
				process.stdout.write("-- done\n");
				break;
			}
			case "serve": {
				// prepare database
				await _zeitbild.database.check();
				
				await lib_plankton.session.setup(
					{
						"data_chest": (
							_zeitbild.conf.get().session_management.in_memory
							? lib_plankton.storage.memory.implementation_chest<lib_plankton.session.type_session>({})
							: lib_plankton.call.convey(
								lib_plankton.storage.sql_table_common.chest(
									{
										"database_implementation": _zeitbild.database.get_implementation(),
										"table_name": "sessions",
										"key_names": ["key"],
									}
								),
								[
									(core : any) => ({
										"setup": (input : any) => core.setup(undefined),
										"clear": () => core.clear(),
										"write": (key : any, value : any) => core.write([key], {"data": JSON.stringify(value)}),
										"delete": (key : any) => core.delete([key]),
										"read": (key : any) => core.read([key]).then((row : any) => JSON.parse(row["data"])),
										// "search": (term : any) => core.search(term).then(() => []),
										"search": (term : any) => Promise.reject(new Error("not implemented")),
									}),
								]
							)
						),
						"default_lifetime": _zeitbild.conf.get().session_management.lifetime,
					}
				);
				
				await _zeitbild.auth.init();
				
				const rest_subject : lib_plankton.rest.type_rest = _zeitbild.api.make();
				const server : lib_plankton.server.type_subject = lib_plankton.server.make(
					async (input, metadata) => {
						const http_request : lib_plankton.http.type_request = lib_plankton.http.decode_request(input.toString());
						const http_response : lib_plankton.http.type_response = await lib_plankton.rest.call(
							rest_subject,
							http_request,
							{
								"checklevel_restriction": lib_plankton.api.enum_checklevel.hard,
								// "checklevel_input": lib_plankton.api.enum_checklevel.soft,
								// "checklevel_output": lib_plankton.api.enum_checklevel.soft,
							}
						);
						const output : string = lib_plankton.http.encode_response(http_response);
						return output;
					},
					{
						"host": _zeitbild.conf.get().server.host,
						"port": _zeitbild.conf.get().server.port,
						// DANGER! DANGER!
						"threshold": 0.125,
					}
				);
				
				lib_plankton.server.start(server);
				break;
			}
		}	
	}
	return Promise.resolve<void>(undefined);
}

(
	main(process.argv.slice(2))
	.then(
		() => {
		}
	)
	.catch(
		(error) => {
			process.stderr.write(String(error) + "\n");
		}
	)
);